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Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE Subwoofer alignments (a fancy word for the combination of box size, vent lengths, etc.) are typically designed using the basic T/S parameters of the driver that's being used. THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE Subwoofer alignments (a fancy word for the combination of box size, vent lengths, etc.) are typically designed using the basic T/S parameters of the driver that's being used. THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE ISOBARIC: (isobarik, compound loading) - a method of using two drivers working in tandem in order to achieve a smaller box size for a given design. Theoretically, the Vas of the complete system will be half that of a single driver, which results in a net box size that's also reduced by half. The sensitivity of the isobaric system will be the same as that of a single driver, but you've got to THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Ported systems. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE V1.1 When put together, the internals of the box looked as diagrammed below. The red line is the path length as calculated by the workbook. This, along with other parameters derived by the workbook, were used to model the response of the subwoofer in Hornresp, a program designed to simulate horns, but can be used to model a wide variety of subwoofer alignments. THE SUBWOOFER DIY PAGE Introduction Since I upgraded my INF10 vented subwoofer with a new driver, my INF10 driver was basically lying around on the shelf doing nothing. The driver's tendency to bottom hard when even slightly overdriven indicates that any alignment that requires significant excursion capability (e.g. "Extended Bass Shelf") is simply out of thequestion.
THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE Subwoofer alignments (a fancy word for the combination of box size, vent lengths, etc.) are typically designed using the basic T/S parameters of the driver that's being used. THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE Subwoofer alignments (a fancy word for the combination of box size, vent lengths, etc.) are typically designed using the basic T/S parameters of the driver that's being used. THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE ISOBARIC: (isobarik, compound loading) - a method of using two drivers working in tandem in order to achieve a smaller box size for a given design. Theoretically, the Vas of the complete system will be half that of a single driver, which results in a net box size that's also reduced by half. The sensitivity of the isobaric system will be the same as that of a single driver, but you've got to THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Ported systems. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE V1.1 When put together, the internals of the box looked as diagrammed below. The red line is the path length as calculated by the workbook. This, along with other parameters derived by the workbook, were used to model the response of the subwoofer in Hornresp, a program designed to simulate horns, but can be used to model a wide variety of subwoofer alignments. THE SUBWOOFER DIY PAGE Introduction Since I upgraded my INF10 vented subwoofer with a new driver, my INF10 driver was basically lying around on the shelf doing nothing. The driver's tendency to bottom hard when even slightly overdriven indicates that any alignment that requires significant excursion capability (e.g. "Extended Bass Shelf") is simply out of thequestion.
THE SUBWOOFER DIY PAGEPASSIVE RADIATOR SYSTEMSPROJECTSSUBWOOFER DISTORTIONHORN FOLDINGDUMAX PARAMETERS Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGEPASSIVE RADIATOR SYSTEMSPROJECTSSUBWOOFER DISTORTIONHORN FOLDINGDUMAX PARAMETERS Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Ported systems. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE The published Xmax for the INF10 is 8 mm, and the published power handling capability is 100 Watts. From previous tests, I deduced that the cone could move about one inch peak-peak, which suggests an Xmechof 12 mm.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGEWEB VIEW Author: Brian.Steele Last modified by: Brian.Steele Created Date: 3/24/2015 3:12:36 AM Other titles: Driver Design Build Hornresp Panel Calculations Path Calculations BaffleOffset BaffleWidth Depth Driver_ConeVol Driver_FOM1 Driver_FOM2 Driver_FrameW Driver_Fs Driver_MagnetH Driver_MagnetW Driver_MF Driver_MountingW Driver_Name Driver_Path Driver_Qes Driver_Qms Driver_Qts THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE ISOBARIC: (isobarik, compound loading) - a method of using two drivers working in tandem in order to achieve a smaller box size for a given design. Theoretically, the Vas of the complete system will be half that of a single driver, which results in a net box size that's also reduced by half. The sensitivity of the isobaric system will be the same as that of a single driver, but you've got to THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE V1.1 When put together, the internals of the box looked as diagrammed below. The red line is the path length as calculated by the workbook. This, along with other parameters derived by the workbook, were used to model the response of the subwoofer in Hornresp, a program designed to simulate horns, but can be used to model a wide variety of subwoofer alignments. THE SUBWOOFER DIY PAGE The published Xmax for the INF10 is 8 mm, and the published power handling capability is 100 Watts. From previous tests, I deduced that the cone could move about one inch peak-peak, which suggests an Xmechof 12 mm.
BILL ECKLE'S NHT 1259 PROJECTS Installed two dividers in this box that resulted in three compartments each 24" X 14" X 6". These two dividers (braces) have 6" diameter holes in the center. The net interior volume of the box is 6048 in^3 or approx. 99 liters. not counting the 6" holes in THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE Current Version: 2.0 - 10-APR-2021. This workbook can be used to design a sime slot-loaded vented subwoofer. This new version of the workbook uses Hornresp's new "Offset Driver / Offset Vent" model, in an attempt to show the impact of the driver and vent locations on thefrequency response.
THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to enhance and extend its useful range of operation. The waveguide reverses the phase of the driver's rear output by the time it reaches the terminus, thereby reinforcing the output near the lowest resonance frequency of THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Ported systems. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE V1.1 When put together, the internals of the box looked as diagrammed below. The red line is the path length as calculated by the workbook. This, along with other parameters derived by the workbook, were used to model the response of the subwoofer in Hornresp, a program designed to simulate horns, but can be used to model a wide variety of subwoofer alignments. THE SUBWOOFER DIY PAGE V1.1 Classification Data: Name: TH18 Type: "Tapped-Horn" (1/4 wave resonator) Use: Pro Audio Recommended Driver(s): 18 Sound 18WL2400 Fb: 36.8 Hz Dimensions: 101.6 cm x 571 cm x THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE BOXPLAN-THAM Current Version: 4.6 - 02-APR-2021 This workbook can be used to design a tapped horn with a "THAM" style fold.I used an earlier versionof this workbook to design my POC2 tapped horn.The spreadsheet allows for the design of both single and dual-expansiontapped horns.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGEEXOTICPROJECTSDIPOLE BASS SYSTEMSPORTEDAUDIOLINKSCAR AUDIO
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. THE SUBWOOFER DIY PAGE The Subwoofer DIYPage DIY Audio Projects 06 September 2020: My audio projects. 04-1996: A spare-tire well fiberglass subwoofer for my car 04-1998: "El Uglito" - a small 4th order bandpass system 06-1999: Car subwoofer with cabin-gain compensation 04-2000: A subwoofer based on Madisound's INF10 driver 12-2000: A sealed car subwoofer 04-2004: A sealed car subwoofer (upgraded) THE SUBWOOFER DIY PAGE BOXPLAN-THAM Current Version: 4.6 - 02-APR-2021 This workbook can be used to design a tapped horn with a "THAM" style fold.I used an earlier versionof this workbook to design my POC2 tapped horn.The spreadsheet allows for the design of both single and dual-expansiontapped horns.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE The simplest of all loudspeaker designs, the sealed enclosure system consists of a driver mounted on one side of a sealed box. The sealed enclosure system is characterised by excellent transient response, good low frequency power handling, smaller box size and lower sensitivity to misaligned parameters when compared to otheralignments.
THE SUBWOOFER DIY PAGE The Subwoofer DIY Page Passive Radiator Systems last updated: ; 27 January 2019 Passive radiator systems are very similar in operation toported systems.
THE SUBWOOFER DIY PAGE V1.1 From the table, it's plain to see that it's nearly impossible to push Fequal much lower than 80 Hz unless a fairly large baffle is used. The tradeoff here is efficiency; the smaller the baffle, the lower the final efficiency of the dipole system. THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE DIY Audio - Tapped Horns. "Tapped horns" are an interesting addition to the 1/4 wave resonator family (which includes transmission lines, front-loaded horns and rear-loaded horns) that became popular with DIYers from around 2006 thanks in the main part to the work of Thomas Danley, who introduced the concept and was responsible for the design and production of several commercial pro audio THE SUBWOOFER DIY PAGE Integrating a subwoofer with your present audio system. When most persons talk about audible distortion in a working (as opposed to faulty) subwoofer, they're usually referring to the gross levels of distortion that appear when the driver (or amplifier) has reached itslimits.
THE SUBWOOFER DIY PAGE DIY Subwoofers - Some questions and answers. So, you're considering the possibility of building your own subwoofer enclosure, but you're not sure where to start? THE SUBWOOFER DIY PAGE Designing a Bandpass System There are several software tools available that can be used to design a bandpass system. My favourite at the moment is Hornresp, as it allows quite a degree of flexibility in the design stages, and it Hornresp is able to model not only the passband response, but the out of band "noise" - which will give you a pretty good idea of what to expect in that regard, and THE SUBWOOFER DIY PAGE Designing and building a car audio subwoofer is in some ways very similar to designing a subwoofer for your home, and in some ways verydifferent.
THE SUBWOOFER DIY PAGE DIY Audio - Transmission Line Systems. The transmission line system is a "direct radiator" alignment that is designed to use the 1/4 wave resonances in a waveguide to THE SUBWOOFER DIY PAGE T here are many different ways of measuring the Thiele/Small parameters of a driver. The methods outlined below provide a way of for the beginning DIYer to measure these parameters with the minimum of equipment. Measuring Re, Fs, Qes, Qms and Qts THE SUBWOOFER DIY PAGE DIY Audio - Ported systems. A ported enclosure system consists of a driver mounted on one side of a box that has an open tunnel or port which allows the passage of air in and out of the box. THE SUBWOOFER DIY PAGE One of my DIY audio projects - an INF10 subwoofer. Introduction In August 1998, my attention was caught by a new subwoofer driver offered by Madisound under the What's New section on their web site. The INF10, a 10" driver, appeared to have Thiele/Small parameters that suggested very good performance in a ported enclosure. THE SUBWOOFER DIY PAGE V1.1 When put together, the internals of the box looked as diagrammed below. The red line is the path length as calculated by the workbook. This, along with other parameters derived by the workbook, were used to model the response of the subwoofer in Hornresp, a program designed to simulate horns, but can be used to model a wide variety of subwoofer alignments. THE SUBWOOFER DIY PAGE V1.1 Classification Data: Name: TH18 Type: "Tapped-Horn" (1/4 wave resonator) Use: Pro Audio Recommended Driver(s): 18 Sound 18WL2400 Fb: 36.8 Hz Dimensions: 101.6 cm x 571 cm x THE SUBWOOFER DIY PAGE V1.1 The Subwoofer DIY Page v1.1 - Projects Tapped Horn "Proof of Concept #3" last updated: 09 August 2015 Audio DIY Projects; Subwoofer DIY Page : Introduction I decided to make another attempt at building a tapped-horn, using some of the knowledge The Subwoofer DIY Page(start here!)
31 January 2019
Designing and building your own subwoofer for your audio system can be a great way of improving its sound. Building your own subwoofer is really not that difficult (especially if you get a relative or friend to do the woodworking for you!), and makes a great starting point for the beginning DIY speaker builder. Why should you build a subwoofer? Well, frankly most loudspeakers, particularly the smaller ones, are simply not capable of reproducing the lower bass frequencies (no matter what the specifications claim). If the loudspeakers are relieved from trying to play the lower bass frequencies, they will sound better at higher volume levels. Finally, a subwoofer can be located anywhere in your listening area, which provides you with much more flexibility in positioning your main loudspeakers for good sound. Several types of subwoofers systems are covered in this site, including sealed , ported , bandpass , passive radiator and transmission line systems. Also included is information that will help you to choose the system that would best suit your needs, design and build a subwoofer that meets your needs, and techniques to use to get the most out of your build. Several projects are also covered on this site, just in case you are looking for some ideas. Also covered in this site is the designing of subwoofers for car audio use. Not interested in building your own subwoofer? Well, the information on this site can still help. The more you are familiar with subwoofer design concepts, the better position you will be in shopping around for a subwoofer (or subwoofers) to suit your stereo or home theatresystem.
Note: To use any of the equations or spreadsheets given on this site, you MUST provide the T/S parameters for the driver that you want to use. If these parameters were not provided when you purchased the driver, or you believe that they might be incorrect, it best to measure them before choosing what to do withthe driver.
Brian Steele
31 January 2019
Details
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