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UK835 Guitar Preamplifier, Amtron 1975

Last post by modman « 16 Mar 2022, 14:40
Posted in Davidoff Library

by modman » 16 Mar 2022, 14:40 » in Davidoff Library

Amtron UK835 - Guitar Preamplifier.pdf
Amtron UK835 - Guitar preamplifier_2.pdf

Amtron UK835 - Guitar Preamplifier 1.jpg Amtron UK835 - Guitar Preamplifier 2.jpg Amtron UK835 - Guitar Preamplifier 3.jpg Amtron UK835 - Guitar Preamplifier 4.jpg Amtron UK835 - Guitar Preamplifier 5.jpg

0 Replies

229 Views

Last post by modman
16 Mar 2022, 14:40
UK857 Guitar Fuzz Box, Amtron 1975

Last post by modman « 16 Mar 2022, 10:14
Posted in Davidoff Library

by modman » 16 Mar 2022, 10:14 » in Davidoff Library

Amtron UK857 - Guitar fuzz box.pdf

Amtron UK857 - Guitar fuzz box 01.jpg Amtron UK857 - Guitar fuzz box 02.jpg Amtron UK857 - Guitar fuzz box 03.jpg

0 Replies

187 Views

Last post by modman
16 Mar 2022, 10:14
UK168 Compressor/Dynamic Expander, Amtron 1975

Last post by modman « 15 Mar 2022, 22:58
Posted in Davidoff Library

by modman » 15 Mar 2022, 22:58 » in Davidoff Library

Amtron UK168U - Dynamic compander.pdf

Amtron UK168U - Dynamic compander 1.jpg Amtron UK168U - Dynamic compressor 2.jpg Amtron UK168U - Dynamic compressor 3.jpg Amtron UK168U - Dynamic compressor 4.jpg

0 Replies

207 Views

Last post by modman
15 Mar 2022, 22:58
Chorus pedal, in: ETI UK: Guide to Making Music, 1988

Last post by modman « 15 Mar 2022, 22:28
Posted in Davidoff Library

by modman » 15 Mar 2022, 22:28 » in Davidoff Library

ETI-Guide-to-Making-Music-1988 Chorus.pdf

ETI-Guide-to-Making-Music-1988 Chorus 01.jpg ETI-Guide-to-Making-Music-1988 Chorus 02.jpg ETI-Guide-to-Making-Music-1988 Chorus 03.jpg ETI-Guide-to-Making-Music-1988 Chorus 04.jpg

0 Replies

204 Views

Last post by modman
15 Mar 2022, 22:28
Roland CH-60

Last post by frankus « 15 Mar 2022, 20:37
Posted in Amplifiers

by frankus » 15 Mar 2022, 20:37 » in Amplifiers

So I recently got a Roland CH-60 for a song on ebay.

Roland Cubes are a part of my past, I used to load my Dad's Orange Cube 40 into the back of our Brown Austin Allegro on gig nights. It was the first amp I used and I'm mostly a jazzer so it's clean and I like that :)

The CH-60 also packs the Boss CE-2 chorus or very near to it, which was my Dad's favourite pedal (back when he used them). It is concerning that that I'm posting tonight.
They've hard wired a very slow deep chorus on it 3k3...

0 Replies

217 Views

Last post by frankus
15 Mar 2022, 20:37
Boss - HC-2 Hand Clapper 1984 [schematic]

Last post by modman « 15 Mar 2022, 10:35
Posted in Modern Stompbox Effects (1975 - ...)

by modman » 15 Mar 2022, 10:35 » in Modern Stompbox Effects (1975 - ...)

Complete Service Notes PDF (6 pages): BOSS-HC-2-SERVICE-NOTES.pdf

BOSS-HC-2-schematic.jpg

Boss HC_2 Hand Clapper.jpeg

0 Replies

434 Views

Last post by modman
15 Mar 2022, 10:35
P.W. Bond, Springline Reverberation Unit, Everyday Electronics, December 1980 🇬🇧

Last post by modman « 14 Mar 2022, 20:42
Posted in Davidoff Library

by modman » 14 Mar 2022, 20:42 » in Davidoff Library

PDF: Everyday-Electronics-1980-12 Springline Reverb.pdf

Everyday-Electronics-1980-12 Springline Reverb 01.jpg Everyday-Electronics-1980-12 Springline Reverb 02.jpg Everyday-Electronics-1980-12 Springline Reverb 03.jpg Everyday-Electronics-1980-12 Springline Reverb 04.jpg Everyday-Electronics-1980-12 Springline Reverb 05.jpg

0 Replies

238 Views

Last post by modman
14 Mar 2022, 20:42
S.J. Baxendale, Double Tremolo Unit, in: Practical Electronics, April 1978

Last post by modman « 14 Mar 2022, 19:06
Posted in Davidoff Library

by modman » 14 Mar 2022, 19:06 » in Davidoff Library

PDF: Practical-Electronics-1978-04-OCR-Page-0029.pdf

Practical-Electronics-1978-04-OCR-Page-0029.jpg

0 Replies

160 Views

Last post by modman
14 Mar 2022, 19:06
Module de réverberation, in: Haut-Parleur, May 1976 🇫🇷

Last post by modman « 14 Mar 2022, 14:23
Posted in Davidoff Library

by modman » 14 Mar 2022, 14:23 » in Davidoff Library

PDF: Le HAUT-PARLEUR 15 Mai 1976.pdf

Le HAUT-PARLEUR 15 Mai 1976 01.jpg Le HAUT-PARLEUR 15 Mai 1976 02.jpg Le HAUT-PARLEUR 15 Mai 1976 03.jpg Le HAUT-PARLEUR 15 Mai 1976 04.jpg Le HAUT-PARLEUR 15 Mai 1976 05.jpg Le HAUT-PARLEUR 15 Mai 1976 06.jpg

0 Replies

225 Views

Last post by modman
14 Mar 2022, 14:23
M.G. Argent, Tremolo, in: Everyday Electronics, October 1975 🇬🇧

Last post by modman « 14 Mar 2022, 14:08
Posted in Davidoff Library

by modman » 14 Mar 2022, 14:08 » in Davidoff Library

Everyday-Electronics-1975-10 Tremolo.pdf

Everyday-Electronics-1975-10 Tremolo 01.jpg Everyday-Electronics-1975-10 Tremolo 02.jpg Everyday-Electronics-1975-10 Tremolo 03.jpg Everyday-Electronics-1975-10 Tremolo 04.jpg

0 Replies

220 Views

Last post by modman
14 Mar 2022, 14:08
C.F. Terrell, Fuzzbox, in: Everyday Electronics, March 1975 🇬🇧

Last post by modman « 14 Mar 2022, 14:02
Posted in Davidoff Library

by modman » 14 Mar 2022, 14:02 » in Davidoff Library

Everyday-Electronics-1975-03 Fuzzbox Terrell.pdf

Everyday-Electronics-1975-03 Fuzzbox Terrell 01.jpg Everyday-Electronics-1975-03 Fuzzbox Terrell 02.jpg Everyday-Electronics-1975-03 Fuzzbox Terrell 03.jpg Everyday-Electronics-1975-03 Fuzzbox Terrell 04.jpg

0 Replies

245 Views

Last post by modman
14 Mar 2022, 14:02
J. Caborn, Transistorized Reverberation Unit, in: Radio Constructor, July 1969 🇬🇧

Last post by modman « 09 Mar 2022, 16:45
Posted in Davidoff Library

by modman » 09 Mar 2022, 16:45 » in Davidoff Library

PDF: : RC-1969-07 Transistorized Reverberation Unit.pdf

RC-1969-07 Transistorized Reverberation Unit 01.jpg RC-1969-07 Transistorized Reverberation Unit 02.jpg RC-1969-07 Transistorized Reverberation Unit 03.jpg RC-1969-07 Transistorized Reverberation Unit 04.jpg RC-1969-07 Transistorized Reverberation Unit 05.jpg RC-1969-07 Transistorized Reverberation Unit 06.jpg RC-1969-07 Transistorized Reverberation Unit 07.jpg RC-1969-07 Transistorized Reverberation Unit 08.jpg RC-1969-07...

0 Replies

184 Views

Last post by modman
09 Mar 2022, 16:45
Le Distorbox - chambre de distorsion pour guitar électrique, Haut-Parleur, 1971 🇫🇷

Last post by modman « 09 Mar 2022, 15:48
Posted in Davidoff Library

by modman » 09 Mar 2022, 15:48 » in Davidoff Library

PDF: : HP 1971 Distortobox.pdf

HP 1971 Distortobox 01.jpg HP 1971 Distortobox 02.jpg HP 1971 Distortobox 03.jpg

0 Replies

236 Views

Last post by modman
09 Mar 2022, 15:48
Ray Saville, Go-Go Reverb for Guitar, in: Electronics Illustrated, September 1967 🇺🇸

Last post by modman « 09 Mar 2022, 15:35
Posted in Davidoff Library

by modman » 09 Mar 2022, 15:35 » in Davidoff Library

PDF: Electronics-Illustrated-1967-09 Go Go Reverb.pdf

Electronics-Illustrated-1967-09 Go Go Reverb 01.jpg Electronics-Illustrated-1967-09 Go Go Reverb 02.jpg Electronics-Illustrated-1967-09 Go Go Reverb 03.jpg Electronics-Illustrated-1967-09 Go Go Reverb 04.jpg Electronics-Illustrated-1967-09 Go Go Reverb 05.jpg

0 Replies

253 Views

Last post by modman
09 Mar 2022, 15:35
Robert F. Scott, More on Reverberation Units, Radio Electronics, September 1962 🇺🇸

Last post by modman « 09 Mar 2022, 08:54
Posted in Davidoff Library

by modman » 09 Mar 2022, 08:54 » in Davidoff Library

PDF: Radio-Electronics-1962-09 More on Reverberation Units.pdf

Radio-Electronics-1962-09 More on Reverberation Units 01.jpg Radio-Electronics-1962-09 More on Reverberation Units 02.jpg Radio-Electronics-1962-09 More on Reverberation Units 03.jpg Radio-Electronics-1962-09 More on Reverberation Units 04.jpg
Radio-Electronics-1962-09 More on Reverberation Units 00.jpg

0 Replies

213 Views

Last post by modman
09 Mar 2022, 08:54
Built-In Fuzz Box, in: Elementary Electronics, July 1970 🇺🇸

Last post by modman « 08 Mar 2022, 12:51
Posted in Davidoff Library

by modman » 08 Mar 2022, 12:51 » in Davidoff Library

PDF: Elementary-Electronics-1970-07-08-OCR-Page-0058 Built in fuzz box.pdf

Elementary-Electronics-1970-07-08-OCR-Page-0058 Built in fuzz box.jpg

0 Replies

296 Views

Last post by modman
08 Mar 2022, 12:51
Richard H. Dorf, Phase Swing Vibrato, in: Radio Electronics, March 1957 🇺🇸

Last post by modman « 08 Mar 2022, 12:45
Posted in Davidoff Library

by modman » 08 Mar 2022, 12:45 » in Davidoff Library

PDF: Radio-Electronics-1957-03.pdf

See also the earlier version of this article: Richard H. Dorf, 'The Universal Vibrato,' in: Radio News, April 1954 🇺🇸

Radio-Electronics-1957-03 Vibrato 01.jpg Radio-Electronics-1957-03 Vibrato 02.jpg Radio-Electronics-1957-03 Vibrato 03.jpg

0 Replies

207 Views

Last post by modman
08 Mar 2022, 12:45
R.H. Keenan, Build an Electronic Tremolo, in: Radio Electronics, February 1968 🇺🇸

Last post by modman « 08 Mar 2022, 12:18
Posted in Davidoff Library

by modman » 08 Mar 2022, 12:18 » in Davidoff Library

PDF: Radio-Electronics-1968-02 Tremolo.pdf

Radio-Electronics-1968-02 Tremolo 01.jpg Radio-Electronics-1968-02 Tremolo 02.jpg

0 Replies

196 Views

Last post by modman
08 Mar 2022, 12:18
Jack Jaques, Build IC Guitar Reverb, Radio Electronics, February 1970 🇺🇸

Last post by modman « 08 Mar 2022, 10:49
Posted in Davidoff Library

by modman » 08 Mar 2022, 10:49 » in Davidoff Library

PDF: Radio Electronics 1970 02 Jaques Reverb.pdf

Radio Electronics 1970 02 Jaques Reverb 01.jpg Radio Electronics 1970 02 Jaques Reverb 02.jpg

0 Replies

218 Views

Last post by modman
08 Mar 2022, 10:49
A. Russell, Tremolo Unit, Practical Electronics, March 1972 🇬🇧

Last post by modman « 07 Mar 2022, 14:35
Posted in Davidoff Library

by modman » 07 Mar 2022, 14:35 » in Davidoff Library

PDF: Practical-Electronics-1972-03 Tremolo Russell.pdf

Practical-Electronics-1972-03 Tremolo Russell 01.jpg Practical-Electronics-1972-03 Tremolo Russell 02.jpg

0 Replies

216 Views

Last post by modman
07 Mar 2022, 14:35
Byron G. Wells, Fuzzbox 741 Distortion, in: Hands On Electronics, November 1987

Last post by modman « 06 Mar 2022, 14:43
Posted in Davidoff Library

by modman » 06 Mar 2022, 14:43 » in Davidoff Library

Hands-On-1987-11-OCR-Page-0084.png

Hands-On-1987-11-OCR-Page-0084.jpg
Hands-On-1987-11-OCR-Page-0085.jpg

0 Replies

246 Views

Last post by modman
06 Mar 2022, 14:43
EHX frequency analyzer no Blend

Last post by Klakto « 05 Mar 2022, 11:42
Posted in Pedal Debugging & Troubleshooting Support

by Klakto » 05 Mar 2022, 11:42 » in Pedal Debugging & Troubleshooting Support

Hi, my big box EHX frequency analyzer EH 5000 box / EC 9000 pcb suddenly quit working, I only get the pure tone generator sound on output, Blend ctrl. and tone switch do not work anymore. Switching tone switch ON cuts down output signal completely. The pedal is modded to FX On Status LED and EXP pedal Output, using the Direct Out with a stereo jack, wired parallel to the Shift ctrl. It used to work fine during a long time after the mods. So I need some help to fix that great pedal.
Thanks for...

0 Replies

161 Views

Last post by Klakto
05 Mar 2022, 11:42
Herb Friedman, Big Boost, Elementary Electronics, March 1980 🇺🇸

Last post by modman « 03 Mar 2022, 21:54
Posted in Davidoff Library

by modman » 03 Mar 2022, 21:54 » in Davidoff Library

Full article in PDF: Elementary Electronics March April 1980 Big Boost.pdf

Elementary Electronics March April 1980 Big Boost 01.jpg Elementary Electronics March April 1980 Big Boost 02.jpg

0 Replies

239 Views

Last post by modman
03 Mar 2022, 21:54
Nigel Skeels & Robin Hall, Psychedelic Wah, Maplin Electronics, October 1994

Last post by modman « 03 Mar 2022, 16:54
Posted in Davidoff Library

by modman » 03 Mar 2022, 16:54 » in Davidoff Library

Full article in PDF: Maplin-Electronics-1994-10 Psychedelic Wah Wah.pdf

Maplin-Electronics-1994-10 Psychedelic Wah Wah 02.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 03.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 04.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 05.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 06.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 07.jpg Maplin-Electronics-1994-10 Psychedelic Wah Wah 08.jpg Maplin-Electronics-1994-10 Psychedelic Wah...

0 Replies

226 Views

Last post by modman
03 Mar 2022, 16:54
Russian Circuits 1983

Last post by bumblebee « 02 Mar 2022, 22:48
Posted in Davidoff Library

by bumblebee » 02 Mar 2022, 22:48 » in Davidoff Library

A few Russian circuits some may be interested in. Not the clearest scans but the circuits are readable/usable.

Original Source and English parts equivalents within.

Russian Circuits 1983 (FSB).pdf

0 Replies

223 Views

Last post by bumblebee
02 Mar 2022, 22:48

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