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Avatar for MicroSonic

I have been collecting schematics for 30 years and 5 years ago I started make them available at my site but...

replies: 68 views: 85,290
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trondl 1 week ago
Avatar for Tim Farrant



OK, something to spice up Geekslutz = here is where we post images of the INSIDE of audio equipment. Disclaimer; any photo...

Tim Farrant
replies: 1,078 views: 463,204
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fazeka 16th October 2018
Avatar for gabriel1

DSP Innovations has recently launched a FREE data sheet search site. The site, - Search Electronic Components ,...

replies: 16 views: 40,916
Avatar for ponzi
ponzi 27th October 2017
Avatar for Tim Farrant

Anyone who offers technical services should get themselves listed into the new member directory here... Gearslutz Directory:...

Tim Farrant
replies: 8 views: 29,721
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for IliasPre

Hello gearslutz, I'm about to be the proud owner of an SSL 4000 E Series (24ch) in about a week or so. I've started...

replies: 17 views: 494
Avatar for nosebleedaudio
nosebleedaudio 2 hours ago
Avatar for ducksalot

Hey All I have an Allen and Heath MixWiz 16:2 that was working fine, until suddenly the phantom power went out on all channels....

replies: 0 views: 109
Avatar for ducksalot
ducksalot 10 hours ago
Avatar for Tibbon

I've been screwing around with (non-RoHS) electronics since I was about 5 and got my first electronics kit. I've had a soldering...

replies: 97 views: 30,258
Avatar for Pno
Pno 13 hours ago
Avatar for mogazi!

Hello, I'm trying to derive a short pulse from the rising edge of a gate input signal on a synth. More specifically trying to...

replies: 2 views: 193
Avatar for mogazi!
mogazi! 16 hours ago
Avatar for peterlim

Dear All, The "play", "FF" and "Rewind" buttons were working a couple years ago. I tired to...

replies: 10 views: 291
Avatar for Radardoug
Radardoug 18 hours ago
Avatar for SZC

I'm no stranger to opening up microphones but the Baby bottle is a real puzzle. Anyone here know the secret ? I'm guessing...

replies: 6 views: 2,463
Avatar for SZC
SZC 1 day ago
Avatar for GeorgePuddin

Hey guys. Ive recently bought a Soundcraft 600 mixing console and have been cleaning it up. I've come across an issue I just...

replies: 0 views: 165
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GeorgePuddin 1 day ago
Avatar for StormLord11

I have a Kurzweil 2500 with 4 keys are not working/working intermittently; A1, F2, C#2, and A2. I tried cleaning the contacts...

replies: 6 views: 282
Avatar for StormLord11
StormLord11 1 day ago
Avatar for Denshin

hi, Does anyone have a proper Footprint of the neve BA440 or a source for printed PCB around europe? Thx in Advance

replies: 0 views: 210
Avatar for Denshin
Denshin 1 day ago
Avatar for slor

I've had a Harrison PRO-790 for a couple of years now and, though it's far from the most impressive console the company made, I...

replies: 6 views: 1,040
Avatar for J0LLYR0GER
J0LLYR0GER 1 day ago
Avatar for gkmaia

Hi, I just toke my D-50 out of storage after 20 years and the sound is completely distorted, noise & creaking....

replies: 5 views: 312
Avatar for acreil
acreil 1 day ago
Avatar for JFunc

Hallo folks! Does anyone out there know of a decent replacement screen, for the main unit, of a 24/96? My one is pretty dim...

replies: 0 views: 225
Avatar for JFunc
JFunc 1 day ago
Avatar for smilan

Hello, I have few external mic preamps with transformer coupled outputs. When I connecting the preamp output to the Angela...

replies: 14 views: 392
Avatar for Matt Syson
Matt Syson 2 days ago
Avatar for sonicdom

Hi This is a long shot, but does any of you gearslutz happen to have a spare input transformer (771273A) for a PYE compressor...

replies: 3 views: 372
Avatar for sonicdom
sonicdom 2 days ago
Avatar for digitall2000

hi all, having an issue with an otari mrt-90 mkIII, have been using this paper by j. s. smullian to do the transport...

replies: 13 views: 529
Avatar for peterlim
peterlim 2 days ago
Avatar for Robert Machine

I come across this video & it's in direct contrast to what everyone says. He states you do not need to speaker load on the...

Robert Machine
replies: 12 views: 439
Avatar for Robert Machine
Robert Machine 2 days ago
Avatar for norfolk martin

I'm not even sure if I'm in the right forum, but I assumed this is where the folks with greater technical knowledge then me hang...

norfolk martin
replies: 6 views: 327
Avatar for Jay Rose
Jay Rose 2 days ago
Avatar for StormLord11

Well this is a long shot, but maybe there's someone out there familiar with this machine :|. I have a Yamaha CE20 "Combo...

replies: 3 views: 298
Avatar for acreil
acreil 2 days ago
Avatar for invalidusername

Hi I have a PORTA 07 with a faulty voltage regulator. There's only written B891 on it. What's an equivalent part ? What's its...

replies: 16 views: 1,056
Avatar for invalidusername
invalidusername 3 days ago
Avatar for psiclone

Hello. I have a Behringer UMC204HD that I just bought and I'm trying to run both a mic and general sound from my computer...

replies: 0 views: 264
Avatar for psiclone
psiclone 3 days ago
Avatar for bpr103

I'm getting an Altec 1566a here (with the output transformer) and I'm a little confused by the output wiring. Here's the manual,...

replies: 3 views: 278
Avatar for emrr
emrr 3 days ago
Avatar for joedonchev

Hi guys, I'm trying to bring back to life my Peavey Rockmaster tube preamp. It has a special sized transformer to fit the...

replies: 7 views: 428
Avatar for mbrebes
mbrebes 3 days ago
Avatar for Seamus TM

Hi all, I am trying to find an NTP M100c op amp. Any ideas? Thanks, Seamus EDIT: Found some, thanks!

Seamus TM
replies: 15 views: 3,054
Avatar for gyraf
gyraf 4 days ago
Avatar for roginator

decided to replace most of displays in my studio equipment that are dead or allmost at end of life .. most synths is now hard to...

replies: 114 views: 27,401
Avatar for dynamixii
dynamixii 4 days ago
Avatar for HaveItAll

So much gear from the 2000's had switches fail. I want to resurrect a Roland Fantom-X and a V-Synth. Are 'soft tact' something I...

replies: 4 views: 319
Avatar for HaveItAll
HaveItAll 4 days ago
Avatar for AlphaDingo

Hi everyone. I've got a mixer I'm going to be using and I've noticed that keeping the volume low on the channels and the master...

replies: 22 views: 613
Avatar for JohnRoberts
JohnRoberts 4 days ago
Avatar for spectrasound

Who is using a Cadac J-Type console in their studio ? Dealing with some PFL and routing Mods. I can see a future "Cadac...

replies: 8 views: 3,791
Avatar for spectrasound
spectrasound 4 days ago
Avatar for Brownrusty

Hey guys, I have three BSS 404 units all with the exact same problem... The units power up and seem to be running normally,...

replies: 3 views: 2,249
Avatar for musicfirst234
musicfirst234 5 days ago
Avatar for Gabriel Sousa

hello i need to make a low pass and a high pass filter i have here Guitar Pedals: R-C Filter Calculator a simples...

Gabriel Sousa
replies: 10 views: 7,443
Avatar for u87allen
u87allen 5 days ago
Avatar for PartHunter

Hi guys, Was hoping somebody could help me with a problem that's popped up after recapping a guitar amp I own.. I'm not an...

replies: 5 views: 390
Avatar for u87allen
u87allen 5 days ago
Avatar for Blissy

Hey all, Would really appreciate it if anyone could point me in the direction of a Soundtracs PC MIDI 24 Manual. Thanks...

replies: 1 views: 271
Avatar for mbrebes
mbrebes 5 days ago
Avatar for filmcomposer

I've a matched pair of Oktava MK-102 s with different capsules. They were working fine and well-looked after. Recently, one...

replies: 7 views: 743
Avatar for filmcomposer
filmcomposer 6 days ago
Avatar for grannis

I am a guitarist/BV singer with mild hearing loss, resulting in a notch between around 1khz and 2kz Since I use wired...

replies: 1 views: 310
Avatar for wrgkmc
wrgkmc 6 days ago
Avatar for LFTR

Hi, i need new set of passive monitors to test and compare gear i made. For now i'm using old KRK ST8 which aren't matched at...

replies: 2 views: 361
Avatar for LFTR
LFTR 6 days ago
Avatar for Johnny Mack

Can someone share with me the termination of the xlr using Gotham GAC-7? Thank you.

Johnny Mack
replies: 3 views: 321
Avatar for Jay Rose
Jay Rose 6 days ago
Avatar for Slutty Professor

Can the Roland JX3P be switched from using 120V power to 220V power by replacing the transformer and just the fuses from the...

Slutty Professor
replies: 4 views: 333
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Slutty Professor 6 days ago
Avatar for Tonzim

Hi. Any skilled electronic engineers out there who could help me out with some pinpoints to where this malfunction of the 5021...

replies: 0 views: 282
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Tonzim 1 week ago
Avatar for Julian J. Ludwig

Hey guys, how are you? I was going for a Neumann KM100 + AK40, but I noticed that the internal connections are totally...

Julian J. Ludwig
replies: 2 views: 357
Avatar for Julian J. Ludwig
Julian J. Ludwig 1 week ago
Avatar for novoline

Hi- I recently got an EPS16+rack, no scsi, in a trade. I'm generally familiar with how to use it because of have an original EPS...

replies: 2 views: 469
Avatar for RetroFunk
RetroFunk 1 week ago
Avatar for dmartin

What are your opinion of schools like Full Sail, SAE, and CRASS. I have heard conflicting opinions and I am just curious if...

replies: 21 views: 6,417
Avatar for analogguru
analogguru 1 week ago
Avatar for AmongstTheLiving

I'm in the process of making my Midas Venice 240's Direct Outs pre fader. I'm going to be connecting the board to a balanced...

replies: 7 views: 3,684
Avatar for roho
roho 1 week ago
Avatar for Robert Machine

Can someone tell me how to bias a Ibanez TSA15H amp with a multimeter? Itb as 2 - 6V6GT tubes. I had to replace the bias trim...

Robert Machine
replies: 5 views: 346
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Robert Machine 1 week ago
Avatar for FlorianCWN

Hello, I need to repair 2 of my aux out channel on my soundcraft 200 sr (1 and 3) and for that I m looking for the schematics of...

replies: 7 views: 638
Avatar for FlorianCWN
FlorianCWN 1 week ago
Avatar for okkokkokko

Welcome to exactly what the title of this thread suggests! And let me go straight to the disclaimer for all you millennial-,...

replies: 15 views: 1,537
Avatar for EvilRoy
EvilRoy 1 week ago
Avatar for Valeto

I have some stereo stripes from retro Soundcraft 2400 mixer. (I don't have the mixer itself). Main question: How to use them...

replies: 8 views: 1,047
Avatar for Valeto
Valeto 1 week ago
Avatar for Emanuel23

In the proces of restoring my CS 60 I removed all of the keys for a thorough cleaning. I'm about to reinstall them and noticed on...

replies: 0 views: 246
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Emanuel23 1 week ago
Avatar for filmcomposer

Everywhere one reads, it’s emphasized that only ‘Hammond tonewheel generator oil’ must be used to oil a Hammond...

replies: 6 views: 809
Avatar for DrAudiospecific
DrAudiospecific 1 week ago
Avatar for welhamm

Hey guys I own a Tascam 238 unit and use it to multitrack to in my hardware electronic set up. Its a great unit but I recently...

replies: 1 views: 267
Avatar for Radardoug
Radardoug 1 week ago
Avatar for thijsdrum

A while ago I got a Dynacord Echocord Mini. To start of I cleaned the whole machine and heads. I got new tapes from MyTapeEcho....

replies: 1 views: 666
Avatar for ekadek
ekadek 1 week ago
Avatar for wavesfactory

Hi guys, Just a simple question. I'm about to release some new instruments and there's the possibility to release them as...

replies: 2 views: 831
Avatar for Pablo Wilard
Pablo Wilard 1 week ago


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