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SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - http < THE TECHNOLOGY OF THE UNIVIBE The Technology of the Univibe Copyright (c) 1998-2010 R.G. Keen All rights reserved. Updated with mods March 2010 "Univibe" is a registered trademark which was STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. PICKING TRANSISTORS FOR FF CLONES You've determined to build the best Fuzz Face clone in the world. You've collected parts, including some dyn-o-mite PNP germanium transistors and are just itching to get soldering.OUTPUT TRANSFORMERS
You can fairly quickly determine if a transformer is grossly bad. This does not say anything about the subtleties of it's tone, only that itis functioning.
LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. THE DALLAS RANGEMASTER (AND AUSTIN TREBLE BLASTER) IS HERE The Dallas Rangemaster (and Austin Treble Blaster) is here! Unit 1-- and inside Unit 2-- and inside And how to build one CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - http < THE TECHNOLOGY OF THE UNIVIBE The Technology of the Univibe Copyright (c) 1998-2010 R.G. Keen All rights reserved. Updated with mods March 2010 "Univibe" is a registered trademark which was STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. PICKING TRANSISTORS FOR FF CLONES You've determined to build the best Fuzz Face clone in the world. You've collected parts, including some dyn-o-mite PNP germanium transistors and are just itching to get soldering.OUTPUT TRANSFORMERS
You can fairly quickly determine if a transformer is grossly bad. This does not say anything about the subtleties of it's tone, only that itis functioning.
LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. THE DALLAS RANGEMASTER (AND AUSTIN TREBLE BLASTER) IS HERE The Dallas Rangemaster (and Austin Treble Blaster) is here! Unit 1-- and inside Unit 2-- and inside And how to build oneNEW PAGE 1
Information on effects, DIY projects, technical aspects, and tubeamps.
CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BYPASSING AND SWITCHING WITH THE CD4053 CMOS ANALOG MUX I get a lot of questions on how to do an electronic bypass that approaches the performance of a true bypass mechanical switch. This has been hard in the past due to limitations of the switching elements available and a lack of understanding of how to use them. BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting fromCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
VOX DRIVER TRANSFORMER −wires for leads outside the transformer −solder −nylon fishing line to use as a spacer on the ends of the winding; 15 pound rated isabout right.
JFET MATCHING FOR EFFECTS An issue that comes up all the time is matching JFETs. People try to build effects using JFETs as a linear amplifier or as a variable resistor (in all those phasers) and find that the effect doesn't workas planned.
THE JFET DOUBLER
This circuit is a follow up to the MOS Doubler (tm) that I did a while back. I did this one to test the supposition that if you generate a good octave by cancelling out everything except the distortion in a circuit, then you could get back the signal mixed with as much of the distortion as you liked by un-balancing the cancellation circuit. NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - http TUBE AMPLIFIER DEBUGGING PAGE Does your amp have.? No sound at all, not even faint hiss or hum, comes out of the speakers Faint hiss and/or hum comes out of the speakers; Pops fuses; Squeal at some or all control settings; Putt - putts like a motorboat; Hum ; hiss; Popping sounds; Unintentional and ugly distortion even when set for clean operation; Low power or volume, or volume drops off THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - http TUBE AMPLIFIER DEBUGGING PAGE Does your amp have.? No sound at all, not even faint hiss or hum, comes out of the speakers Faint hiss and/or hum comes out of the speakers; Pops fuses; Squeal at some or all control settings; Putt - putts like a motorboat; Hum ; hiss; Popping sounds; Unintentional and ugly distortion even when set for clean operation; Low power or volume, or volume drops off THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to SIMPLE, EASY PARAMETRIC AND GRAPHIC EQ'S, PLUS PEAKS AND If you're into playing with tone controls and notch filters to see how they change the sound out of your effects, you will undoubtedly have built several glops of R's, CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. THE TECHNOLOGY OF THE TUBE SCREAMER So how do these differences affect the sound? To start with, the series resistance at the emitter limits the amount of drive available to drive an amplifier input (although not by much), and in concert with the series capacitor forms a voltage divider with the output shunt resistor and the input impedance of the amplifier plugged into it. This drops the available signal only a trivial amount THOMAS VOX SOLID STATE AMPS The Thomas Vox solid state amplifiers are notorious for their poor reliability.I love the way these amplifiers look (and sometimes the way they sound) and in fixing a couple that I have, I came up with several things that should make them vastly more reliable, and possibly sound better. PICKING TRANSISTORS FOR FF CLONES You've determined to build the best Fuzz Face clone in the world. You've collected parts, including some dyn-o-mite PNP germanium transistors and are just itching to get soldering. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from THE TECHNOLOGY OF WAH PEDALS The stock "wah" pedal has been around since at least the early 60's. While there is a persistent rumor that an early version of a wah mechanism was found in the wreckage at the Roswell crash site, I can categorically state that the government says that this is nonsense, and that no such thing happened. THOMAS VOX REPLACEMENTS The DC feedback in the circuit is supposed to fix this, but does not in all cases. I found that I had to tune the circuit to match the JFET I put in, even if it's a recommended replacement type. NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. SIMPLE, EASY PARAMETRIC AND GRAPHIC EQ'S, PLUS PEAKS AND If you're into playing with tone controls and notch filters to see how they change the sound out of your effects, you will undoubtedly have built several glops of R's, THE TECHNOLOGY OF THE TUBE SCREAMER So how do these differences affect the sound? To start with, the series resistance at the emitter limits the amount of drive available to drive an amplifier input (although not by much), and in concert with the series capacitor forms a voltage divider with the output shunt resistor and the input impedance of the amplifier plugged into it. This drops the available signal only a trivial amount TUBE AMPLIFIER DEBUGGING PAGE Does your amp have.? No sound at all, not even faint hiss or hum, comes out of the speakers Faint hiss and/or hum comes out of the speakers; Pops fuses; Squeal at some or all control settings; Putt - putts like a motorboat; Hum ; hiss; Popping sounds; Unintentional and ugly distortion even when set for clean operation; Low power or volume, or volume drops off STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers.COUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
TESTING OUTPUT TRANSFORMERS You can fairly quickly determine if a transformer is grossly bad. This does not say anything about the subtleties of it's tone, only that itis functioning.
LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from THOMAS VOX SOLID STATE AMPS The Thomas Vox solid state amplifiers are notorious for their poor reliability.I love the way these amplifiers look (and sometimes the way they sound) and in fixing a couple that I have, I came up with several things that should make them vastly more reliable, and possibly sound better. THE TECHNOLOGY OF WAH PEDALS The stock "wah" pedal has been around since at least the early 60's. While there is a persistent rumor that an early version of a wah mechanism was found in the wreckage at the Roswell crash site, I can categorically state that the government says that this is nonsense, and that no such thing happened. NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. SIMPLE, EASY PARAMETRIC AND GRAPHIC EQ'S, PLUS PEAKS AND If you're into playing with tone controls and notch filters to see how they change the sound out of your effects, you will undoubtedly have built several glops of R's, THE TECHNOLOGY OF THE TUBE SCREAMER So how do these differences affect the sound? To start with, the series resistance at the emitter limits the amount of drive available to drive an amplifier input (although not by much), and in concert with the series capacitor forms a voltage divider with the output shunt resistor and the input impedance of the amplifier plugged into it. This drops the available signal only a trivial amount TUBE AMPLIFIER DEBUGGING PAGE Does your amp have.? No sound at all, not even faint hiss or hum, comes out of the speakers Faint hiss and/or hum comes out of the speakers; Pops fuses; Squeal at some or all control settings; Putt - putts like a motorboat; Hum ; hiss; Popping sounds; Unintentional and ugly distortion even when set for clean operation; Low power or volume, or volume drops off STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers.COUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
TESTING OUTPUT TRANSFORMERS You can fairly quickly determine if a transformer is grossly bad. This does not say anything about the subtleties of it's tone, only that itis functioning.
LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from THOMAS VOX SOLID STATE AMPS The Thomas Vox solid state amplifiers are notorious for their poor reliability.I love the way these amplifiers look (and sometimes the way they sound) and in fixing a couple that I have, I came up with several things that should make them vastly more reliable, and possibly sound better. THE TECHNOLOGY OF WAH PEDALS The stock "wah" pedal has been around since at least the early 60's. While there is a persistent rumor that an early version of a wah mechanism was found in the wreckage at the Roswell crash site, I can categorically state that the government says that this is nonsense, and that no such thing happened. NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model NEW PAGE 1 PAPER TEMPLATESGREATCHEDDAR!DISTORTIONMILLENIUM 2 BYPASS EXTENSIONSWAH SEQUENCER Information on effects, DIY projects, technical aspects, and tubeamps.
GEO'S EFFECTS SCHEMATICS A short history of effects schematics on the world wide web. New Effects. Notes on this effect. MOS Doubler (GEO) A cleaner sounding version of an octave up, uses CMOS Logic IC. Much less distortion than full wave rectifier based octave designs. New design from R.G. Signal Splitter. A transformer isolated signal splitter that enables hum-free REPAIR BOARDS FOR THE FOLLOWING THOMAS ORGAN VOX MODELS These cover all models of the small combos like the Cambridge, and all models of the "Big Head" amps like the Buckingham, Guardsman, and Beatle before the advent of JFET inputs in the V11n3*6 series.SCREAMER OCTAVE
Tube Screamer to Octave Screamer – Or What Am I Gonna Do With These Parts? Copyright 2000 by Scott Swartz. All rights reserved. Hosted by permission at GEO - httpCOUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
THE SECRET LIFE OF POTS The Secret Life of Pots. Copyright 1999 R.G. Keen All rights reserved. As electronics tinkerers, we all use potentiometers, or "pots" for short. We count on them to BUILDING REPLICAS OF VOX CABINETS AND HEADS Allowing for the White Beading. The grille cloth on Thomas Vox products is held in place by the pressure of the white plastic beading, which is forced into a slot set into the speaker board just at its joint with the sides and top of the cabinet. STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers. HUM-FREE(ER) A/B/Y SPLITTER BOX WITH TRANSFORMER ISOLATION Out A Out B Both-9V +9V +9V +9V 100uF/10V x2 0.1uF film 2.2uF NP or film 10K 1K 10K 11K 100R A on B on 0.001uF 0.001uF 10K 10K 2.2M 2.2M 10K:10K (Mouser 42TM018) 10K:10K CORRECTED MAESTRO BASS BRASSMASTER BB-1 Corrected Maestro Bass Brassmaster BB-1 After a great deal of detective work by some effects makers and comparisons with original units, it has been determined that the manufacturer’s schematic for the Maestro Bass Brassmaster model CONVERTING INTEGRATED/PA TUBE AMPS INTO GUITAR AMPS. Converting Integrated/PA Tube Amp into Guitar Amps. Introduction. Whether you're a beginner or seasoned Guitar electronics enthusiast, you can re-build an existing generic tube amplifier which will rival the name-brand units in performance when used with an electric guitar. SIMPLE, EASY PARAMETRIC AND GRAPHIC EQ'S, PLUS PEAKS AND If you're into playing with tone controls and notch filters to see how they change the sound out of your effects, you will undoubtedly have built several glops of R's, THE TECHNOLOGY OF THE TUBE SCREAMER So how do these differences affect the sound? To start with, the series resistance at the emitter limits the amount of drive available to drive an amplifier input (although not by much), and in concert with the series capacitor forms a voltage divider with the output shunt resistor and the input impedance of the amplifier plugged into it. This drops the available signal only a trivial amount TUBE AMPLIFIER DEBUGGING PAGE Does your amp have.? No sound at all, not even faint hiss or hum, comes out of the speakers Faint hiss and/or hum comes out of the speakers; Pops fuses; Squeal at some or all control settings; Putt - putts like a motorboat; Hum ; hiss; Popping sounds; Unintentional and ugly distortion even when set for clean operation; Low power or volume, or volume drops off STAR GROUNDING IN TUBE AMPLIFIERS "I've built this amp, and it hums - why!!!??? What can I do to keep amps from humming, or make them never hum in the first place?" The power line hum demon lurks literally everywhere, inserting that low "mmmmmmmmmmmmmm" into your speakers.COUPLING CAPACITORS
The biasing of any tube stage depends on having the signal coupled into the grid of the tube at the proper DC level. A leaky coupling capacitor lets current through from the preceeding stage and upsets the DC bias, usually turning the tube on so hard that no signal canpass through it.
TESTING OUTPUT TRANSFORMERS You can fairly quickly determine if a transformer is grossly bad. This does not say anything about the subtleties of it's tone, only that itis functioning.
LEAD DRESS IN TUBE AMPS Lead Dress in Tube Amps. The following material is copyright 2005 R.G. Keen. All rights are reserved. It is an exerpt from an article in preparation for posting from THOMAS VOX SOLID STATE AMPS The Thomas Vox solid state amplifiers are notorious for their poor reliability.I love the way these amplifiers look (and sometimes the way they sound) and in fixing a couple that I have, I came up with several things that should make them vastly more reliable, and possibly sound better. THE TECHNOLOGY OF WAH PEDALS The stock "wah" pedal has been around since at least the early 60's. While there is a persistent rumor that an early version of a wah mechanism was found in the wreckage at the Roswell crash site, I can categorically state that the government says that this is nonsense, and that no such thing happened. Sorry - this page uses frames, but your browser doesn't supportthem.
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