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by Mick BaileyI came across this schematic for a simple voltage controlled amplifier (VCA) using the TDA7052A - obsolete, but still readily available and cheap. The dynamic...
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Channel: Music Electronics
04-25-2024, 05:05 PM -
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Gday , i am a hobbiest luthier in Auckland Nz. I had a mooer preamp live blow up on me. I managed to repair it by replacing blown capacitors. It worked fine...
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Channel: Other Amps
Yesterday, 08:39 PM -
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by misterc57Picked up a R25T combo with no speakers this week. I believe they were only made in 1960. I hope to get it operational. Looks like work had been started and...03-08-2024, 04:22 PM
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by thukHi folks. I've got an early 80s JC-120 that gates the Chorus/Vibrato effect at lower volumes.
I've had this problem for years, and finally found...Yesterday, 09:23 PM -
by StratfordadeI'm working on a Marshall 8080 where the power amp and clean channel work fine and loud, but the Boost channel is relatively quiet. Selecting the higher OD2...04-24-2024, 02:07 PM
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by nevetslabI'm presently servicing an Ampeg SVT4-Pro that has significant distortion in the Vactec-based Limiter in the front end of the Power Amp Circuit. It uses...Yesterday, 08:46 PM
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by ValveheadI normally dont work on pedals , but was asked to look at this black Big Muff made by EH .
I think i have the right schematic. I havent had time...-
Channel: Guitar Effects
Yesterday, 03:59 AM -
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Hello folks,
I know keyboard stuff isn't typical on this forum, but I'm not really a member of the keyboard forums & frankly am too lazy to become...-
Channel: Music Electronics
Yesterday, 04:33 PM -
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by nevetslabSomething that has always bothered me with the traditional Fender Amps with Reverb, such as the Twin Reverb, Deluxe Reverb, Super Reverb, etc is that just...04-22-2024, 08:15 PM
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by AxtmanI am working on a 1975 Silverface Fender Princeton Reverb. These amps never had grid leak or grid stopper resistors. Should I add them or "not fix anything...Yesterday, 05:00 PM
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Hey guys. I'm the author of a book "Electronics for Guitarists" that's been out for a few years and I recently started a YouTube channel related...
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Channel: Music Electronics
04-24-2024, 06:16 PM -
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by TomCarlosMEF Team....
I am looking for the Laney AOR Pro Tube Lead 100 Schematic.
I know there are threads where Chuck H and G1 posted...-
Channel: Schematic Requests
04-25-2024, 11:40 PM -
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by TomCarlosMEF Team....
As mentioned in the sister post, it looks like I have a Peavey Classic, Version A, with some mods. After examining the PC board,...04-23-2024, 11:52 PM -
by RandallSurprised at how difficult it has been to track down a replacement PT for a Backstage II amp. Number is 705-17950. I don't really want to go to a lot of trouble...06-04-2022, 06:45 PM
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by fenderstratI just bought a amp which i bought doa for nearly nothing. anyway im trying to find the schematic for it. i went to scematic heaven and believe it to be the...07-12-2010, 10:54 PM
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by 888guitarsI have this pcb from ce dist. I’d like to know how to use it on a boss ce5 chorus. Where would the ” in “ come from? Or what would trigger...
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Channel: Guitar Effects
04-23-2024, 03:19 AM -
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by rockman627I got a Twin Reverb , 135 watts with master volume that had a loud hum. The output balance and heater balance could not adjust enough to quiet it. It had...04-18-2024, 05:29 PM
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by pontiacpeteThis amp is doing something really strange. It works great sometimes then it doesn’t pass signal at all. I’m having a very similar problem that...04-14-2024, 11:31 AM
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by SmokerxHi, I have a Hartke Ha5500 that was blowing fuses. I traded the fuse out for a proper fuse from the schematic and it blew that fuse. I then replaced Q310...04-13-2024, 12:00 AM
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by cakewalkerA customer wants a dummy coil for his noisy p90s. I have made 2 alternatives with 41 awg. One is a typical p90 plastic bobbin, the other was around the same...2 Photos
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Channel: Pickup Theory
04-12-2024, 04:21 PM -
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by bruzanhdSo I have a JMP1c, I love the amp and would look to tweak it to be a little more bright. The amp was voiced by the designer to sound like it is a channel...
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Channel: Mods & Tweaks
03-26-2024, 06:20 AM -