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SCHEMATICS – PRESERVATION SOUND DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled voltage amplification stage (for instance, the circuit on the right). It requires an extra single hi-mu triode section. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a.

VACUUM TUBE HI-FI

Download the entire 16pp TERMINAL RADIO Recording and Hi-Fidelity Equipment catalog: DOWNLOAD: Terminal_Radio_1949_Catalog Products covered, with text, some specs, and photos, include: Brush Magnetic tape recorders BK414, 710B, 810, and 808 Twin-trak; hi-fi tube amps from Brooks (10C3, 12A3), Meissner 9-1093 tuner amp and 9-1091C, RJ-12A tuners; tuners from Browning, Many ELECTRA GUITARS OF THE 1970S Electra was a brand-name for Japanese-made guitars imported by the St Louis Music Co. in the 1970s. There were also Electra-branded amps: I had a pretty rad solid-state piggyback with a 15″ driver and footswitchable phaser/reverb/overdrive (i think) in the early 90s pretty good sound for a solid-state amp. PILOT RADIO CORP HI-FI LINE CIRCA 1962 Download the entire twenty-page 1962 PILOT hi-fi catalog: DOWNLOAD: Pilot_HiFi_Line_1962_Catalog Models covered include: Pilot 610, 602MA, 602SA, 654MA, and 746 receivers; Pilot Mark III, 280B, 285, and 780 FM tuners; Pilot 230, 240, 246, and 248B stereo integrated amplifiers; Pilot 200, 120, and 100 FM Stereo Multiplexers; Pilot-Garrard RC-3,

RC-5, and RC-4

TECHNICS ‘PROFESSIONAL SERIES’ OF THE LATE 70S: ORIGINAL Download 18pp of catalogs for the circa 1978 Technics ‘professional series’ ST-9030 Tuner, SH-9010 equalizer, and SU-9070 Preamp: DOWNLOAD:Technics_Pro_1980 There was also an SH-9020 meter unit and an SE-9060 power amp, but I can’t seem to find those documents at

present.

EMPIRE HIGH FIDELITY: COMPLETE C. 1964 CATALOG EMPIRE High Fidelity: Complete c. 1964 Catalog. Download the complete 16pp EMPIRE “World’s most perfect high fidelity components” catalog (circa 1964 – exact year is unclear): Products covered, with text, specs, and images, include: Empire Grenadier model 8000, Royal Grenadier 9000, and Imperial Grenadier 8200 speakers; Empire Troubador FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1 The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. SPEAKER WEEK(S) BEGINS WITH JORDAN WATTS DOWNLOAD: Jordan_Watts_spkrs. On offer: the Jordan Watts models Juno, Juliet, Jumbo, GT, Jodrell, Jupiter, TLS, Jericho, Centurion, Qubique, and Flagon. The Jordan-Watts speakers used a very unusual 4″ metal-coned driver unit that came in its own integral mini-enclosure. Even stranger tho are their Arabesque and Romanesque “Qubiqe” and SCHEMATICS – PRESERVATION SOUND DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled voltage amplification stage (for instance, the circuit on the right). It requires an extra single hi-mu triode section. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a.

VACUUM TUBE HI-FI

RC-5, and RC-4

present.

EMPIRE HIGH FIDELITY: COMPLETE C. 1964 CATALOG EMPIRE High Fidelity: Complete c. 1964 Catalog. Download the complete 16pp EMPIRE “World’s most perfect high fidelity components” catalog (circa 1964 – exact year is unclear): Products covered, with text, specs, and images, include: Empire Grenadier model 8000, Royal Grenadier 9000, and Imperial Grenadier 8200 speakers; Empire Troubador FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1 The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. SPEAKER WEEK(S) BEGINS WITH JORDAN WATTS DOWNLOAD: Jordan_Watts_spkrs. On offer: the Jordan Watts models Juno, Juliet, Jumbo, GT, Jodrell, Jupiter, TLS, Jericho, Centurion, Qubique, and Flagon. The Jordan-Watts speakers used a very unusual 4″ metal-coned driver unit that came in its own integral mini-enclosure. Even stranger tho are their Arabesque and Romanesque “Qubiqe” and RCA – PRESERVATION SOUND The RCA OP-6 ‘Portable Amplifier’ is one of a handful of truly visually-iconic vintage mic preamps. The OP-6 was designed as a “remote,” as-in, ‘on-location’ single-channel mic preamp for radio station broadcasts. It uses three 1620 (6J7) tubes – most mic pre designs of the period use two. MAGNECORD – PRESERVATION SOUND There is a lot of Magnecord material on PS dot com I didn’t plan it, it just kinda happened. Which is the story of my life in general. For better and for worse. I was at the flea mkt a coupla years ago and I found a pair of Magnecord PT6s, complete and in nice road cases, for $25 each. I fixed ’em up, made some recordings with them, and then stuck em in the studio (where they have THE WILLIAMSON AMP, PART ONE The original Williamson hi-fi amplifier schematic as published in “Wireless World” magazine (UK) May 1947. The Williamson amplifier is considered one of the earliest hi-fidelity audio amplifier designs. It is certainly one of the most popular audio circuits ever developed

for DIY’rs.

PILOT RADIO CORP HI-FI LINE CIRCA 1962 Download the entire twenty-page 1962 PILOT hi-fi catalog: DOWNLOAD: Pilot_HiFi_Line_1962_Catalog Models covered include: Pilot 610, 602MA, 602SA, 654MA, and 746 receivers; Pilot Mark III, 280B, 285, and 780 FM tuners; Pilot 230, 240, 246, and 248B stereo integrated amplifiers; Pilot 200, 120, and 100 FM Stereo Multiplexers; Pilot-Garrard RC-3,

RC-5, and RC-4

ADM MIXERS AND CONSOLES OF THE 1970S ADM Mixers and Consoles of the 1970s and 1980s. Nice set for y’all today, courtesy of reader T.F. T. sent over a large collection of ADM console images spanning the mid seventies into the 1980s. I know next to nothing about ADM, other than it was very well-made equipment: discrete op-amps, UTC or similar-quality transformers, and inductor ASTATIC MICROPHONES: FULL CATALOG SCAN: CIRCA 1975 Download the complete circa 1975 (actual date unknown) Astatic Microphones Full-Line Catalog (22pp) DOWNLOAD: Astatic_Catalog_197* Models covered include: Astatic 810 HI FI AMPLIFIER SCHEMATICS C. 1954 Hi Fi Amplifier Schematics c. 1954. Today we have some hi-fi amplifiers from the mid 1950s to look at. Many of them use unusual output transformers with split primaries, so I am really not sure if it’s even possible to build these designs today. The Craftsmen C-500 pictured above uses a standard PP-VC output transformer; it also uses

readily

PIONEER: COMPLETE 1977 CATALOG Pioneer: Complete 1977 Catalog. Pretty good one for y’all today. Click below to download the complete 32-panel 1977 PIONEER STEREO COMPONENTS Catalog No. 13: Units covered, with specs and photographs, include: Pioneer SX-1250, SX-1050, SX-950, SX-850, SX-750, SX-650, SX-550, & SX-450 AM/FM Stereo Receivers; SPEC-1 and SPEC-2 preamp and

power

RUSSCO BROADCAST TURNTABLES CIRCA 1980 There was nothing carny barker about Russco tables: they were made for 24/7 broadcast use. Wow and flutter were in no way comparable to, say, a Linn Sondek, which back then was actually (hard to believe) less

expensive.

SPEAKER WEEK(S) BEGINS WITH JORDAN WATTS DOWNLOAD: Jordan_Watts_spkrs. On offer: the Jordan Watts models Juno, Juliet, Jumbo, GT, Jodrell, Jupiter, TLS, Jericho, Centurion, Qubique, and Flagon. The Jordan-Watts speakers used a very unusual 4″ metal-coned driver unit that came in its own integral mini-enclosure. Even stranger tho are their Arabesque and Romanesque “Qubiqe” and LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a. ELECTRA GUITARS OF THE 1970S Electra was a brand-name for Japanese-made guitars imported by the St Louis Music Co. in the 1970s. There were also Electra-branded amps: I had a pretty rad solid-state piggyback with a 15″ driver and footswitchable phaser/reverb/overdrive (i think) in the early 90s pretty good sound for a solid-state amp. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. ADD VIBRATO (?) TO ANY TUBE AMP! (1962) To Any Tube Amp! (1962) Download a short article from 1962 by one F.H. Calvert on the subject of adding a vibrato circuit to any vacuum-tube audio amplifier: DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled RUSSCO BROADCAST TURNTABLES CIRCA 1980 There was nothing carny barker about Russco tables: they were made for 24/7 broadcast use. Wow and flutter were in no way comparable to, say, a Linn Sondek, which back then was actually (hard to believe) less

expensive.

AWA (AMALGAMATED WIRELESS AUSTRALASIA) BROADCAST EQUIPMENT AWA was the ‘RCA’ of Australia throughout much of the 20th century: they made and marketed both consumer and professional electronics equipment as well as engaging in actual broadcasting. Due to a very protective import-taxation scheme in place in Australia until the early 1970s (as well as the high cost of shipping imported

goods to that

entitled

JBL STUDIO MONITORS: FULL-LINE CATALOG C. 1980 JBL Studio Monitors: full-line catalog c. 1980. Download the 6pp 1980 JBL ‘Studio Monitors’ catalog: Models covered, with text, specs, and photos, include: JBL 4350B, 4311B, 4331B, 4343B, 4313B, 4333B, 4315B, and 4301B speakers systems. At one point or another I think i’ve come across all of these things in various studios, offices,

and

TECHNICS SB-10 “HONEYCOMB DISC” SPEAKER SYSTEM C. 1980 Technics SB-10 “Honeycomb Disc” speaker system c. 1980. Download the original 4pp catalog for the Technics SB-10 “R&B Series” Honeycomb Disc Speaker System: We’ve featured a ton of late-70’s Technics materials here at PS dot com, but I think this is the first of their period speakers we’ve described and wow these things are LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a. ELECTRA GUITARS OF THE 1970S Electra was a brand-name for Japanese-made guitars imported by the St Louis Music Co. in the 1970s. There were also Electra-branded amps: I had a pretty rad solid-state piggyback with a 15″ driver and footswitchable phaser/reverb/overdrive (i think) in the early 90s pretty good sound for a solid-state amp. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. ADD VIBRATO (?) TO ANY TUBE AMP! (1962) To Any Tube Amp! (1962) Download a short article from 1962 by one F.H. Calvert on the subject of adding a vibrato circuit to any vacuum-tube audio amplifier: DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled RUSSCO BROADCAST TURNTABLES CIRCA 1980 There was nothing carny barker about Russco tables: they were made for 24/7 broadcast use. Wow and flutter were in no way comparable to, say, a Linn Sondek, which back then was actually (hard to believe) less

expensive.

goods to that

entitled

and

VACUUM TUBE HI-FI

present.

ALTEC SOUND EQUIPMENT 1968 Altec Sound Equipment 1968. Download the sixteen-page 1968 Altec Sound And Communication catalog: Products covered, with text photos, and limited specs, include the full range of microphones, horn speakers, Duplex coaxial speakers, full range drivers, voice-of-the-theatre systems, tube and solid-state power amps, pre-amps, compressors, and PILOT RADIO CORP HI-FI LINE CIRCA 1962 Download the entire twenty-page 1962 PILOT hi-fi catalog: DOWNLOAD: Pilot_HiFi_Line_1962_Catalog Models covered include: Pilot 610, 602MA, 602SA, 654MA, and 746 receivers; Pilot Mark III, 280B, 285, and 780 FM tuners; Pilot 230, 240, 246, and 248B stereo integrated amplifiers; Pilot 200, 120, and 100 FM Stereo Multiplexers; Pilot-Garrard RC-3,

RC-5, and RC-4

expensive.

FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1 The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. EMPIRE HIGH FIDELITY: COMPLETE C. 1964 CATALOG EMPIRE High Fidelity: Complete c. 1964 Catalog. Download the complete 16pp EMPIRE “World’s most perfect high fidelity components” catalog (circa 1964 – exact year is unclear): Products covered, with text, specs, and images, include: Empire Grenadier model 8000, Royal Grenadier 9000, and Imperial Grenadier 8200 speakers; Empire Troubador LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a. SCHEMATICS – PRESERVATION SOUND DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled voltage amplification stage (for instance, the circuit on the right). It requires an extra single hi-mu triode section. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. HEATHKIT – PRESERVATION SOUNDHEATHKIT AMPS FOR SALEHEATHKIT AUDIO AMPLIFIERHEATHKIT GUITAR AMPLIFIERHEATHKIT POWER AMPLIFIERHEATHKIT TUBE AMPHEATHKIT GUITAR AMPLIFIER FOR SALE Heathkit makes a bold claim about the capability of the above Jaguar when used in league with their TA-38 bass amp: “Here’s a combination that will produce the most mind-bending, soul-grabbing sound around.” 266 lbs, $499.00. Tags. effects pedals, guitar equipment, heathkit, organs.

VACUUM TUBE HI-FI

MICROPHONE

Download the complete circa 1975 (actual date unknown) Astatic Microphones Full-Line Catalog (22pp) DOWNLOAD: Astatic_Catalog_197* Models covered include: Astatic 810 ALTEC SOUND EQUIPMENT 1968 Altec Sound Equipment 1968. Download the sixteen-page 1968 Altec Sound And Communication catalog: Products covered, with text photos, and limited specs, include the full range of microphones, horn speakers, Duplex coaxial speakers, full range drivers, voice-of-the-theatre systems, tube and solid-state power amps, pre-amps, compressors, and AWA (AMALGAMATED WIRELESS AUSTRALASIA) BROADCAST EQUIPMENT AWA was the ‘RCA’ of Australia throughout much of the 20th century: they made and marketed both consumer and professional electronics equipment as well as engaging in actual broadcasting. Due to a very protective import-taxation scheme in place in Australia until the early 1970s (as well as the high cost of shipping imported

goods to that

power

FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1AUDIO LIMITER CIRCUIT SCHEMATICAUDIO LIMITER KITAUDIO COMPRESSOR LIMITERAUDIO PEAK LIMITERFAST AUDIO LIMITERAUDIO VOLUME LIMITER The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a. SCHEMATICS – PRESERVATION SOUND DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled voltage amplification stage (for instance, the circuit on the right). It requires an extra single hi-mu triode section. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. HEATHKIT – PRESERVATION SOUNDHEATHKIT AMPS FOR SALEHEATHKIT AUDIO AMPLIFIERHEATHKIT GUITAR AMPLIFIERHEATHKIT POWER AMPLIFIERHEATHKIT TUBE AMPHEATHKIT GUITAR AMPLIFIER FOR SALE Heathkit makes a bold claim about the capability of the above Jaguar when used in league with their TA-38 bass amp: “Here’s a combination that will produce the most mind-bending, soul-grabbing sound around.” 266 lbs, $499.00. Tags. effects pedals, guitar equipment, heathkit, organs.

VACUUM TUBE HI-FI

MICROPHONE

goods to that

power

FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1AUDIO LIMITER CIRCUIT SCHEMATICAUDIO LIMITER KITAUDIO COMPRESSOR LIMITERAUDIO PEAK LIMITERFAST AUDIO LIMITERAUDIO VOLUME LIMITER The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. ASTATIC MICROPHONES: FULL CATALOG SCAN: CIRCA 1975 Download the complete circa 1975 (actual date unknown) Astatic Microphones Full-Line Catalog (22pp) DOWNLOAD: Astatic_Catalog_197* Models covered include: Astatic 810 ELECTRA GUITARS OF THE 1970S Electra was a brand-name for Japanese-made guitars imported by the St Louis Music Co. in the 1970s. There were also Electra-branded amps: I had a pretty rad solid-state piggyback with a 15″ driver and footswitchable phaser/reverb/overdrive (i think) in the early 90s pretty good sound for a solid-state amp. PUBLIC ADDRESS SYSTEM HISTORY The first recorded use of sound reinforcement (i.e., a PA system) was the inauguration of Warren G. Harding in 1922 ( Bushnell, Ferree 2011) . This was incredible technology at the time, technology that has given musicians infinite new possibilities for performnce. PILOT RADIO CORP HI-FI LINE CIRCA 1962 Download the entire twenty-page 1962 PILOT hi-fi catalog: DOWNLOAD: Pilot_HiFi_Line_1962_Catalog Models covered include: Pilot 610, 602MA, 602SA, 654MA, and 746 receivers; Pilot Mark III, 280B, 285, and 780 FM tuners; Pilot 230, 240, 246, and 248B stereo integrated amplifiers; Pilot 200, 120, and 100 FM Stereo Multiplexers; Pilot-Garrard RC-3,

RC-5, and RC-4

ADM MIXERS AND CONSOLES OF THE 1970S ADM Mixers and Consoles of the 1970s and 1980s. Nice set for y’all today, courtesy of reader T.F. T. sent over a large collection of ADM console images spanning the mid seventies into the 1980s. I know next to nothing about ADM, other than it was very well-made equipment: discrete op-amps, UTC or similar-quality transformers, and inductor HI FI AMPLIFIER SCHEMATICS C. 1954 Hi Fi Amplifier Schematics c. 1954. Today we have some hi-fi amplifiers from the mid 1950s to look at. Many of them use unusual output transformers with split primaries, so I am really not sure if it’s even possible to build these designs today. The Craftsmen C-500 pictured above uses a standard PP-VC output transformer; it also uses

readily

power

TURNER MICROPHONES CIRCA 1970 Turner has left the mic business to concentrate on their primary product line: embalming machines. The original reason they got in the mic business was that funeral directors found existing mics insufficient for use in the funeral parlor. TECHNICS ‘PROFESSIONAL SERIES’ OF THE LATE 70S: ORIGINAL Download 18pp of catalogs for the circa 1978 Technics ‘professional series’ ST-9030 Tuner, SH-9010 equalizer, and SU-9070 Preamp: DOWNLOAD:Technics_Pro_1980 There was also an SH-9020 meter unit and an SE-9060 power amp, but I can’t seem to find those documents at

present.

MULLARD 520 POWER AMPLIFIER C.1956 Download a four-page article from “Radio & Television News” 4/1956 regarding the Mullard 520 power amp: American industrial titan RCA offered schematics for a variety of tube-audio equipment in the back pages of their many “receiving tube manuals.”. Mullard, a prominent British maker of vacuum tubes, similarly published a book

entitled

LANGEVIN – PRESERVATION SOUND Except that they cost $13, rather than $200 for a vintage 2A3. A fully-balanced 30-watt amp using about a million dollars in tubes. another 30-watt amp, this time using the very cheap 807 tubes. The 807 is similar to a 6L6, except that the grid connection is on a top cap. 807s can also handle crazy high voltage.a. SCHEMATICS – PRESERVATION SOUND DOWNLOAD: Vibrato. Above, the schematics. These are not plans for a stand-alone device: rather this circuit (the schem on the left) is intended to be added to any resistance-coupled voltage amplification stage (for instance, the circuit on the right). It requires an extra single hi-mu triode section. CARVIN – PRESERVATION SOUND Above is the playing-field of the flagship Q1608, a Quadraphonic console with 16 inputs and 8 outputs. Other mixers on offer: the Carvin S1800, S1200, MP1000, MC1000, SP600, S600, MP600, MC600, and MP410 mixers. Above is the MP410, a lil dude with 125 watts (into 4 ohm), a graphic EQ, and a built-in Hammond reverb. HEATHKIT – PRESERVATION SOUNDHEATHKIT AMPS FOR SALEHEATHKIT AUDIO AMPLIFIERHEATHKIT GUITAR AMPLIFIERHEATHKIT POWER AMPLIFIERHEATHKIT TUBE AMPHEATHKIT GUITAR AMPLIFIER FOR SALE Heathkit makes a bold claim about the capability of the above Jaguar when used in league with their TA-38 bass amp: “Here’s a combination that will produce the most mind-bending, soul-grabbing sound around.” 266 lbs, $499.00. Tags. effects pedals, guitar equipment, heathkit, organs.

VACUUM TUBE HI-FI

MICROPHONE

goods to that

power

VACUUM TUBE HI-FI

MICROPHONE

goods to that

power

FEDERAL AM-864 LIMITER CLONE: BUILD NOTES: UPDATE 1AUDIO LIMITER CIRCUIT SCHEMATICAUDIO LIMITER KITAUDIO COMPRESSOR LIMITERAUDIO PEAK LIMITERFAST AUDIO LIMITERAUDIO VOLUME LIMITER The 864 is a simple, rugged device that accepts 600 ohm balanced or unbalanced line-level signal, offers a single front-panel input-attenuator control, and compresses the output level at a 10-to-1 ratio once the threshold point is reached. The output is also 600-ohm balanced or unbalanced, and it offers a maximum 36db of gain. ASTATIC MICROPHONES: FULL CATALOG SCAN: CIRCA 1975 Download the complete circa 1975 (actual date unknown) Astatic Microphones Full-Line Catalog (22pp) DOWNLOAD: Astatic_Catalog_197* Models covered include: Astatic 810 ELECTRA GUITARS OF THE 1970S Electra was a brand-name for Japanese-made guitars imported by the St Louis Music Co. in the 1970s. There were also Electra-branded amps: I had a pretty rad solid-state piggyback with a 15″ driver and footswitchable phaser/reverb/overdrive (i think) in the early 90s pretty good sound for a solid-state amp. PUBLIC ADDRESS SYSTEM HISTORY The first recorded use of sound reinforcement (i.e., a PA system) was the inauguration of Warren G. Harding in 1922 ( Bushnell, Ferree 2011) . This was incredible technology at the time, technology that has given musicians infinite new possibilities for performnce. PILOT RADIO CORP HI-FI LINE CIRCA 1962 Download the entire twenty-page 1962 PILOT hi-fi catalog: DOWNLOAD: Pilot_HiFi_Line_1962_Catalog Models covered include: Pilot 610, 602MA, 602SA, 654MA, and 746 receivers; Pilot Mark III, 280B, 285, and 780 FM tuners; Pilot 230, 240, 246, and 248B stereo integrated amplifiers; Pilot 200, 120, and 100 FM Stereo Multiplexers; Pilot-Garrard RC-3,

RC-5, and RC-4

ADM MIXERS AND CONSOLES OF THE 1970S ADM Mixers and Consoles of the 1970s and 1980s. Nice set for y’all today, courtesy of reader T.F. T. sent over a large collection of ADM console images spanning the mid seventies into the 1980s. I know next to nothing about ADM, other than it was very well-made equipment: discrete op-amps, UTC or similar-quality transformers, and inductor HI FI AMPLIFIER SCHEMATICS C. 1954 Hi Fi Amplifier Schematics c. 1954. Today we have some hi-fi amplifiers from the mid 1950s to look at. Many of them use unusual output transformers with split primaries, so I am really not sure if it’s even possible to build these designs today. The Craftsmen C-500 pictured above uses a standard PP-VC output transformer; it also uses

readily

power

present.

entitled

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BELL LABS’ ELECTRO-MECHANICAL ‘SPEECH SYNTHESIZER’ CIRCA 1951 * Post author By chris * Post date 10/05/2020 * No Comments on Bell Labs’ Electro-Mechanical ‘Speech Synthesizer’ circa 1951 Download a 4PP article (+advert) from the June 1951 RADIO ELECTRONICS on the subject of a novel (+fairly creepy) electro-mechanical speech-synthesizer designed by Bell Labs. Bell Labs Speech Synthesizer 1951

Download

This has got to be one of the wildest electro-mechanical synths every created. I wonder what New Jersey basement it ended up in. I’m preeeeetty sure that this abomination provided the historical-basis for the device that Tony Shaloub’s character was developing in the first season of The Marvelous Mrs. Maisel. Anyhow. It’s weird and far-out and I think you will enjoy reading about it.

* Tags bell labs

-------------------------

Custom Fabrication

Technical

BOGEN DB20 EQUALIZER CIRCUIT CIRCA 1953 * Post author By chris * Post date 10/05/2020 * 1 Comment on Bogen DB20 Equalizer Circuit circa 1953 From the October 1953 edition of RADIO ELECTRONICS comes this report on an exceptionally powerful EQ circuit as-found in the then-new Bogen DB20 amplifier. The circuit uses no special parts and promises extremely wide-range control. R11 is odd, i’m not sure why that is present. I’m thinking that this might make a good EQ circuit for the Berlinetta DJ console…

* Tags bogen ,

equalizers ,

schematics

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“BETTER IS GOLD”: DEBUT EP FROM ENID ZE: AVAILABLE NOW * Post author By admin * Post date 07/21/2020 * 1 Comment on “Better Is Gold”: Debut EP from Enid Ze:

Available now

Now available: the EP ‘BETTER IS GOLD’ from Enid Ze. You can hear it via the platform of your choice at

this link

.

Enid Ze is a musical vision conceived and directed by Zimbabwean-born singer/songwriter Nyasha Chiundiza, produced and mixed by yours truly, with invaluable aid+participation from so many of my most dear musical collaborators. It is not lightly that I tell you: Nyasha is a visionary and an iconoclast. Here’s some words about the project from the man himself, but please don’t take his (or my) words for it. Check out the tracks. This is something else, and something

wonderful. From NC:

_enid ze is a continuation and reimagining of the Southern African tradition of Zamrock—W.I.T.C.H. Keith Mlevhu, Wells Fargo—where global pop and rock come to cohere in specific existential experiences of living many worlds at once. Listen to the panting on the title track “Better is Gold” and remember Letta Mbulu. When you hear “Marechera” recall modernist African writer Dambudzo Marechera’s

poem, Punkpoem:_

In the song

Are waterfruits;

In the plush and flow Firestars eternally fixed.

Guitar strings lash

My back, draw blood – The out of control voice Skids shrieking across

Tarmac audiences.

_When you hear “Shuwa” hear the word “sure” but also the waves on the beaches of Maputo, Mozambique. Or the beer gardens of downtown Harare. Also listen to how far home and how close it is, how unrest and rest lie together like a lion and lamb._ _“Better is Gold” is about the condition of seeking more than you see—not in the future but in the things that you find along the way. “Better” is better than gold._ -------------------------

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“DERNIERS PRÉPARATIFS”: NEW CAMERRO SINGLE FOR DOWNLOAD * Post author By admin * Post date 07/18/2020 * No Comments on “Derniers Préparatifs”: new CAMERRO single for

download

Download my new track “Derniers Préparatifs” here: Eight days ago I found an ancient Italian polysynth at a local pawn shop. Called the Crumar Orchestrator,

it’s an odd

combination of string synth, ‘electronic piano,’ and monosynth all in one rather heavy package. The sound is effortlessly evocative of circa 1980 Euro cinema, and this track came to me instantly. You can see pics of the Crumar, hear my original live performance of the piece, and even see the drumkit mic’ing for this track at my

Instagram page .

As with the rest of my Camerro project, this track was recorded entirely on a four-track cassette recorder: in this case, a Tascam 134. Here’s how it went down: Track 1: Ace Tone ‘Rhythm Ace’ drum machine w/heavy Yamaha E1010 16th note echo; Track 2: Crumar orchestrator (this is the bulk of what you’re hearing). Track 3: Bass guitar. Track 4: add elec guitar while submixing with tracks 1, 2, 3. After the bounce, I added live drumkit to track one (overwriting drum machine), and add two passes of Roland Alpha Juno synth + Hohner Pianet electric piano to tracks 2+3 (overwriting bass+ Crumar). The kit was recorded with two mics, submixed thru a basic mic preamp and heavily compressed to tape. -------------------------

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“SONG TO WELCOME THE SPRING”: NEW CAMERRO SINGLE FOR DOWNLOAD * Post author By admin * Post date 07/11/2020 * No Comments on “Song To Welcome The Spring”: New CAMERRO

single for download

SONG TO WELCOME THE SPRING /// the first track I’m releasing from my solo recording project CAMERRO. ‘control-click’ on the player below to download the MP3. This song is inspired by my trip last yr visiting ancient pagan churches in Estonia. Everything you hear is played live by me and the track was entirely recorded on a cassette 4-track. For me this music is as raw and personal as it gets. The 4-track cassette process requires that everything be performed carefully and with great intent as ‘fixes’ are not possible. For yall techy-types here’s

how it went down:

Tascam 134 4-track cassette deck with Maxell XLII-S tape. Click to track three, elec gtr (finger picked rh+melody) to track one, drums to track two, bass to track four; Submix gtr, drums, bass while playing congas all to track two (erasing

click);

add electric organ on track two (overwriting drums), add sitar and cello (in sections) to track one (overwriting gtr), add percussion to track to 4 (overwriting bass). Two microphones were used: Bang&Olufsen ribbon for drums and perc, Neumann TLM170 for congas and cello, gtr bass sitar organ were direct. FX are Yamaha PROR3 reverb and Yamaha

E1010 delay.

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“BULLY. COWARD. VICTIM. THE STORY OF ROY COHN” W/SCORE BY RUGGIERO AND HALPERN: HBO DEBUT * Post author By admin * Post date 06/18/2020 * No Comments on “Bully. Coward. Victim. The Story Of Roy Cohn” w/score by Ruggiero and Halpern: HBO debut Tonight Thursday June 18 at 9PM: “Bully. Coward.Victim.” will air for the first time on HBO. Nathan Halpern and I scored this outstanding documentary for director Ivy Meeropol, our second collaboration following her award-winning 2015 doc “Indian Point.” Cohn was an infamous and complicated figure, and Meeropol’s film paints a detailed and nuanced portrait. The incredible, horrible closeness that Meeropol has to Cohn gives her a unique vantage point from which to tell this story. This was a wonderful project to work on; I got to create music in a variety of styles that I don’t often get a chance to play with in a

film context.

Learn more about and view the trailer at HBO dot com

.

* Tags Film Scores

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PRESERVATION SOUND RADIO WPKN FM JUNE 2020 PROGRAM: LINK TO STREAM * Post author By admin * Post date 06/11/2020 * No Comments on Preservation Sound Radio WPKN FM June 2020 program:

Link to stream

This month’s Preservation Sound Radio show has aired. This program is a mix of 1950s+60s ‘Academic’ and ‘new music’ combined with spiritual jazz, New Age, and ambient, assembled and broadcast from the original LPs. In case you caught the show when it aired on June 10, here’s the tracklist. * Magical Power Mako ‘Tundra” from ‘Super Record’ MR5055 1975 * Roger Powell “Lumia” from ‘Cosmic Furnace’ Atlantic LP

SD7251 1973

* George Duke “North Beach” from ‘Faces in Reflection’ BASF

LP MC22018 1974

* Pascal Laguirand “Abalii” from ‘De Harmonia Universalia’

Minos LP 1002 1980

* David Bowie “Subterranean” from ‘Low’ RCA LP CPL1-2030 1977 * Robert Ashley ‘she was a visitor’ from “extended voices” Odyssey LP 32 16 0156 1967 * Lonnie Liston Smith “Let us go into the house of the Lord” from ‘Astral Travelling’ FD 10163 1973 * Alice Coltrane “Hare Krishna” from ‘Universal Consiousness’ Impulse LP AS-9210 1971 * Beaver/Krause “By Your Grace” from ‘Gandharrva’ WS 1909

1971

* Keith Jarrett “First” from ‘Invocations’ ECM LP ECM D 1201

1981

* Reinhard Lakomy “Das geheime Leben” from the LP of the same title, Amiga 8 55 893 1982 * Gigi Masin “Celebration of Eleven/The Sea of Sand” from ‘Wind’ BAR003/15 1986 (2015 repress) * Henry Cowell “Aeolian Harp” from ‘Sounds of New Music,’ Folkways FX6160 1957 * Alexi Lubimov “Fur Alina” from the LP ‘Arvo Part’ MRP 115

2017

* Vladimir Ussachevsky “Sonic Contours” from ‘Sounds of New Music,’ Folkways FX6160 1957 * Roger Eno “A Paler Sky’ from the LP ‘Voices’ EGED 42 1985 * Raul Lovisoni / Francesco Messina “Prati bagnati del monte Analogo” from the LP of the same title, 1979, 2018 pressing on SV130 * Harold Budd “Sandtreader” from ‘Lovely Thunder’ EGED46 1986 * Wendy Carlos (as Walter Carlos) “Summer” from ‘Sonic Seasonings’ Columbia LP KG31234 1972 * Morton Feldman ‘Chorus and Instruments II’ from “extended voices” Odyssey LP 32 16 0156 1967 * Emerson Meyers & Assoc. “Moonflight Sound Pictures” from ‘Provocative Electronics’ WGS-8129 1970 * Roberts Owen “homage to max Ernst” from ‘Immature Oocytes” Mortsleam Records 1982 * Francois De Roubaix “Mort d’un Guide” from ‘Volume’ 3’ Barclay LP 80291 1979 * Arnold Walter, Harvey Olnick, Myron Schaeffer “Summer Idyl” from ‘Electronic Music’ folkways LP FM33436 recorded 1959 rel 1967 * Terry Riley “Poppy Nogood and the phantom band” from ‘A Rainbow in curved Air” Columbia MS7315 1969 * Eduard Artimiev track A1 from the OST to ‘Stalker’ rec 1979,

rel SV109 2014

* Wendy Carlos and Rachel Elkind “Rocky Mountains” from the OST to ‘The Shining’ HS3449 1980 * Johann Johannsson “Mandy Love Theme” from the OST to ‘Mandy’ Lakeshore Records 2018 * Steven Halpern “moonrise over orion” from ‘Zodiac Suite’

HS771 1977

* Freddie Hubbard “Monodrama” from ‘sing me a song of songmy’ Atlantic SD 1576 1971 * Steve douglas “Time Capsule” from his LP ‘The Music Of

Cheops” CH-1 1976

* Sven Grunberg ‘Hingus’ from OM, Melodiya C60 27019 002 1988 * Bo Hansson “Time and Space” from ‘Attic thoughts” SIRE LP

sasd 7525 1976

* Dominique Guiot “Ballet Amoureux Des Dauphins” from ‘L’ Univers De La Mer’ AV4160 1979 * James Newtown Howard “Rose ’68 ’69” from ‘From Inside’ BVHAAST LP 019 1978

* Tags On The Radio

,

preservationsoundradio

, radio

shows

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RITES OF MAY: PRESERVATION SOUND RADIO MAY 2020 * Post author By admin * Post date 05/14/2020 * No Comments on RITES OF MAY: preservation sound radio May 2020 This month’s Preservation Sound Radio show has already aired, but you can stream the entire program from the WPKN FM archives for the next few weeks. Click here to stream the show

.

RITES OF MAY is a three-hour psych-folk celebration of Spring. As usual all of the audio is taken directly from my vinyl LP stacks. This show was transferred with a Technics 1200 w/ Shure 44-7 cartridge and Ramko SP8-E preamp. Bonus announcements via period recordings of Louise Huebner and Dr Edward Teller . Here’s

the track list.

* Catherine Ribiero +2 Bis “Un Sourire, Un Rire, Des Esclats”

FLDX 487

* Vangelis O. Papathanassiou “Ritual” from the LP ‘Earth’

Vertigo 6499 693

* Simon Finn “Laughing til Tomorrow” Cherry Red Records 1970 * Jean-Bernard Raiteux “Kathleen Writhes” from the OST to ‘Les

Demons’

* Eigo Kawashima and homo sapiens “bye bye bye” 1975 Elektra

Japan L-6101E

* The Beau Brummels “The Wolf Of Velvet Fortune” from their LP ‘Triangle’ Warner WS 1692 * Glass Harp “Southbound” Decca DL 75261 * Karen Beth “Something To Believe in” from ‘the joys of life,’ Decca DL 75148 * Osamu Kitajima “Immortality” PSI 004-2 * Black Sabbath “Lord Of This World” from the LP ‘Master of Reality,’ warner brothers BS 2562 1971 * Nico “Secret Side” from the 1971 BBC Session, Gearbox LP GB1533 * Marcus “Grains Of Sand’ from his Kineic/Columbia LP Z 30207 * David Crosby “Traction in the rain” from the LP ‘If I Could Only Remember My Name’ Atlantic LP SD 7023 * Higelin & Areski “Remember” Saravah France LP SH 10005, 1969 * Folk Music of the world ‘Grand Nord’ “Järnefelt” CV1117 * Magical Power Mako ‘Sound Mother Earth’ from SUPERRECORD Polydor Japan MR 5055 * Orpheus “the dream” MGM SE-4524 * Bonnie Koloc “My aunt Edna” from her s/t LP Ovation # OVQD 1429 * Cem Karaca “Foam on the sea” * Elyse Weinberg “Here In My Heart” from the LP ‘Elyse’ Tetragammon LP T-117 * Don Cooper “Sad Eyed Queen of the Mountain” from ‘Bless the Children’ Roulette SR-42046 * Tim Buckley “Had A Talk With My Woman” from ‘Lorca’, Elektra EKS-74074 1970 * Yuri Morozov “Blue Star Wanderer” BUTR14LP * Cro Magnon “First World Of Bronze” from their S/T ESP Disk LP

#2001 1969

* Alexander Gradsky “You and me” circa 1972 Melodiya LP C60 2447

004

* Sandy Bull “Electric Blend” from ‘The Essential Sandy Bull’

Vanguard VSD 59/60

* Buffy St Marie “God is alive, Magic is afoot” from her LP ‘Illuminations’ Vanguard VSD 79300 * Brigitte Fontaine and Areski “Ragilia” from the LP ‘L’Incendie’ BYG Records N. 529026 * Total Issue “Dis Mais Dis” from their S/T LP UAS France 29 174 * Sopwith Camel “Dancin Wizard” from their LP “The Miraculous Hump Returns From The Moon” Reprise LP MS 2108 1973 * US69 “Im On My Way” from their Buddah LP BDS 5035 * Tyrannosaurus Rex “By The Light of The Magical Moon” from their Blue Thumb LP ‘A Beard of Stars’ BTS 8818 * Pearls Before Swine “The Old Man” from the LP ‘The Use Of Ashes’ Reprise 6405 1970 * Pugh “Signe” from his S/T LP Metronome MLP-15.336 * The Seeds “Six Dreams” from their GNP LP “Future” GNP 2038 * Jake Holmes “too long” from ‘The Above Ground Sound Of Jake Holmes” Tower LP ST 5079 * Jonathan & Leigh “Summer Sorrow” from their Vanguard LP ‘Third and Main’ VRS-9257 1967 * The Incredible String Band “Footsteps of the Heron’ from their s/t LP Elektra EKS-7322 * Exuma “Baal” from ‘Exuma II” Mercury SR 61314 * Victoria “A Famous Myth” from her LP ‘Secret of the Bloom’ San Francisco LP SD201 1969 * Georgia Kelly “The Sound Of Spirit” from her LP of the same

name, HERU-104 1981

* Tags preservationsoundradio

, radio

shows

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UTC CG-SERIES TERMINAL ARRANGEMENTS C.1956 * Post author By admin * Post date 05/02/2020 * 4 Comments on UTC CG-Series Terminal Arrangements c.1956 UTC’s “CG” ‘commercial grade’ line of transformers were high-quality sealed units made in the 50s and 60s and possibly later. The later ‘red paint’ iterations often have pinout data printed on the cases, but the earlier ‘metal-badge’ versions sometimes do not. Despite the wealth of vintage UTC transformer data already available online, I could not find this particular document on the internet so I have scanned it for y’all. This particular document has a March 1956 date code so i assume that it covers the line

at-that-point.

_CNTRL-CLICK TO DOWNLOAD 4PP PDF_: Units covered include output transformers CG-2L6, 4L6, 15, 16, 19, 710; power transformers CG-422, 428, 429, 431; bias units CG-315, 316; low-level audio units CG-131, 132, 133, 134, 135, 136, 1347, 140, 141, 233, 235, 333, 433; and power transformers CG33, CG120, CG122, CH124, CG125, CG126, CG300, CG301, CG302, CG303, CG34. Above: some examples of the varying CG case styles- both with and without pinout data. The terminal board on bottom generally have some data but it is often incomplete. -------------------------

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THE LIL’EST CHAMP

* Post author By admin * Post date 04/14/2020 * 4 Comments on The Lil’est Champ I wanted to see how compact I could make a high-voltage, point-to-point wired Tweed Champ. Here’s the result. Leo Fender’s 5F1 circuit, but with a solid-state rectifier, built into a tiny vintage NOS Bud hammertone chassis. Front panel is gain (standby switch at zero), pilot lamp, input; rear panel is fuse, power switch, IEC and speaker jack. See my Instagram page for sound sample.

*

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Text

VACUUM TUBE HI-FI

RC-5, and RC-4

present.

VACUUM TUBE HI-FI

RC-5, and RC-4

present.

for DIY’rs.

RC-5, and RC-4

readily

power

expensive.

expensive.

goods to that

entitled

and

expensive.

goods to that

entitled

and

VACUUM TUBE HI-FI

present.

RC-5, and RC-4

expensive.

VACUUM TUBE HI-FI

MICROPHONE

goods to that

power

VACUUM TUBE HI-FI

MICROPHONE