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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: 85,398
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trondl 2 weeks 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: 463,541
Avatar for fazeka
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: 40,963
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: 29,770
Avatar for Aniol1349
Aniol1349 10th June 2017
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: 1 views: 277
Avatar for dfchandler
dfchandler 5 hours 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: 17 views: 603
Avatar for Radardoug
Radardoug 6 hours ago
Avatar for GaryInThailand

Hi everyone, I'm Gary Hall. Many years ago, I was the lead designer of the Lexicon PCM42. Beyond all expectations at the time,...

replies: 10 views: 1,239
Avatar for Alex Kretov
Alex Kretov 8 hours ago
Avatar for IliasPre

Can any owner of a SSL 4000 E/G series tell me this height? from top point to floor (picture). Also, how high can you adjust the...

replies: 3 views: 319
Avatar for Radardoug
Radardoug 13 hours 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: 16 views: 3,092
Avatar for totallybertini
totallybertini 16 hours ago

Hello everyone, I have to clean some scratchy pots of my mixer. I read on this forum that tech pros do not recommend using...

replies: 33 views: 991
Avatar for Jim Williams
Jim Williams 17 hours ago
Avatar for HeavySunWes

Hello all. I’ve tried researching this topic and I can’t seem to find anyone who has had the exact same problem. My 8P has...

replies: 2 views: 335
Avatar for Zaphod Betamax
Zaphod Betamax 18 hours ago
Avatar for peterlim

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

replies: 18 views: 409
Avatar for peterlim
peterlim 19 hours ago
Avatar for alexstringer

Can anybody help me find out how to replace the lithium battery on a Lexicon 200? I know Jim Fabiano makes it his speciality but...

replies: 15 views: 4,849
Avatar for mikelevitt
mikelevitt 19 hours ago
Avatar for stevo991

I would like to start a thread for all of you slutz out there that has any info or schematics on AMEKS BIG, Recall, and 501 by...

replies: 22 views: 2,605
Avatar for gyraf
gyraf 21 hours ago
Avatar for ozbox

Hello. Does anyone have tech manual for this console? I know that audiomaintenance is selling full manual. But it's real pain...

replies: 6 views: 5,197
Avatar for yetemono
yetemono 1 day ago
Avatar for Jason Graham

Hello, I recently acquired an Otari MX-80 32 track 2" tape machine. Transport appears to be in good shape, 32 track heads...

Jason Graham
replies: 2 views: 298
Avatar for Jason Graham
Jason Graham 1 day ago
Avatar for bubblebash

I've been hunting around for a slightly smaller version of a 240x64 lcd and having some difficulty. Hopefully someone has a...

replies: 0 views: 245
Avatar for bubblebash
bubblebash 1 day ago
Avatar for Brian M. Boykin

Hello, I’m about to combine two of the same console and was wondering if I can change positioning of input, group, modules...

Brian M. Boykin
replies: 3 views: 303
Avatar for Brian M. Boykin
Brian M. Boykin 1 day ago
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: 20 views: 633
Avatar for Jim Williams
Jim Williams 1 day 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: 24 views: 6,522
Avatar for Jim Williams
Jim Williams 1 day ago
Avatar for gorka

Hello, I´m no technician and I don´t want to judge the quality of designs around the opa275. I´m just asking because I...

replies: 7 views: 285
Avatar for Jim Williams
Jim Williams 1 day ago
Avatar for burns46824

This is hard to find, so I scanned it for anyone interested.

replies: 2 views: 1,480
Avatar for nednerd
nednerd 1 day ago
Avatar for grantmwalker

Hello Fellow Gearslutz, I don't believe I've posted in some years... Though I continue to frequent the board from time to time...

replies: 6 views: 283
Avatar for grantmwalker
grantmwalker 2 days ago
Avatar for valvusmusicus

Hi All My 101 is ill! Turn it on, with either batteries or PSU-most of the LEDs light up, the top of the display displays very...

replies: 1 views: 1,077
Avatar for Japower
Japower 2 days ago
Avatar for zarembo

hey all, I have a p3000 which exhibits a crackle out of the left channel high freq. when pushed to a certain level. At...

replies: 29 views: 2,270
Avatar for Radardoug
Radardoug 2 days 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: 9 views: 1,119
Avatar for gyraf
gyraf 3 days 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: 8 views: 365
Avatar for niklasni1
niklasni1 3 days ago
Avatar for Bannny

Hello, I'm getting my humble Ramsa wr-s4424 overhauled, but I haven't been able to locate the schematic. I know it's a pretty...

replies: 11 views: 2,746
Avatar for detroitbasement
detroitbasement 3 days 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: 1 views: 256
Avatar for Jay Rose
Jay Rose 3 days ago
Avatar for Hollowman9

I have begun making modifications to an old Univox Maxi-Korg synthesizer. When I bought the unit it was partially functioning...

replies: 35 views: 1,654
Avatar for Hollowman9
Hollowman9 3 days 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: 30,364
Avatar for Pno
Pno 4 days 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: 285
Avatar for mogazi!
mogazi! 4 days 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: 2,499
Avatar for SZC
SZC 4 days 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: 235
Avatar for GeorgePuddin
GeorgePuddin 5 days 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: 271
Avatar for Denshin
Denshin 5 days 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: 1,076
Avatar for J0LLYR0GER
J0LLYR0GER 5 days 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: 354
Avatar for acreil
acreil 5 days 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: 432
Avatar for Matt Syson
Matt Syson 6 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: 409
Avatar for sonicdom
sonicdom 6 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: 479
Avatar for Robert Machine
Robert Machine 6 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: 362
Avatar for Jay Rose
Jay Rose 6 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: 336
Avatar for acreil
acreil 6 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: 1,083
Avatar for invalidusername
invalidusername 1 week 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: 300
Avatar for psiclone
psiclone 1 week 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: 314
Avatar for emrr
emrr 1 week 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: 463
Avatar for mbrebes
mbrebes 1 week 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: 27,455
Avatar for dynamixii
dynamixii 1 week 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: 352
Avatar for HaveItAll
HaveItAll 1 week 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: 643
Avatar for JohnRoberts
JohnRoberts 1 week 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: 3,814
Avatar for spectrasound
spectrasound 1 week 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: 2,272
Avatar for musicfirst234
musicfirst234 1 week 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: 7,468
Avatar for u87allen
u87allen 1 week 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: 427
Avatar for u87allen
u87allen 1 week 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: 301
Avatar for mbrebes
mbrebes 1 week ago


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