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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: 86,417
Avatar for trondl
trondl 28th November 2018
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: 466,498
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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: 41,449
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: 30,266
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for jml designs

I’ve got an old Urei LA-22 and it needs to be (apparently) terminated. I’ve seen guys put resistors across the output (was it...

jml designs
replies: 5 views: 277
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jml designs 15 minutes ago
Avatar for Jonk

How does one go about measuring the current of an opamp? I understand I need to change one of my multimeter leads to the...

replies: 5 views: 73
Avatar for DrewE
DrewE 40 minutes ago
Avatar for 3stamme

Hi everyone. I was just wondering since i have been doing some looping lately - opening up some of my maxell tapes and cutting...

replies: 9 views: 319
Avatar for Richard Crowley
Richard Crowley 1 hour ago
Avatar for Franco the Manco

Hi, I have a pair of Alto Professional 210 s which i rent out for private parties where operation is not supervised....

Franco the Manco
replies: 0 views: 30
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Franco the Manco 1 hour ago
Avatar for sameal

Hi. Awhile back i built a p.s. for my soundcraft delta board ( off suggestions from many threads with many knowledgable...

replies: 1 views: 47
Avatar for sameal
sameal 2 hours ago
Avatar for tomhetas

Hey guys. A very kind member suggested to move my question to this thread. So recently I've bought an old Hill Audio Conecpt...

replies: 1 views: 115
Avatar for Jay Rose
Jay Rose 3 hours ago
Avatar for SeanRyder

Hey All - I have had an intermetinet short in the right channel for a little while, which seems to be related to the ratio...

replies: 2 views: 239
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SeanRyder 12 hours ago
Avatar for alba359

Hello guys, Any help is greatly appreciated. I have a Behringer Ultra Curve Pro 8024 with low battery warning. Can anyone advise...

replies: 2 views: 455
Avatar for francociccio
francociccio 18 hours ago
Avatar for MicDaddy

Long story short: Saw an 'As-Is' non-working MD441 on ebay for too low of a price to stay away heh Sure enough it showed up...

replies: 13 views: 7,920
Avatar for blackjono2000
blackjono2000 22 hours ago
Avatar for whatever17

Hi my AMDEK DMK-100 has started playing up - i'll do an audio example later - as soon as Effect is engaged, there's a...

replies: 2 views: 160
Avatar for whatever17
whatever17 22 hours ago
Avatar for trondl

Bought this machine for cheap in very good condition a year ago and plan to give it at least new caps for the psu before I even...

replies: 2 views: 196
Avatar for wrgkmc
wrgkmc 22 hours ago
Avatar for bram

I have a nice little Audio Developments mixer, ad031. 8channel, basic filtering, 1 aux, dual compressor, inserts on the master....

replies: 7 views: 2,346
Avatar for Jim Williams
Jim Williams 1 day ago
Avatar for Whoopysnorp

I've been eyeing the Microphone Parts SDC kit lately. I have a couple of MXL603s that never get used, and either I'll mod them or...

replies: 20 views: 3,122
Avatar for playon
playon 1 day ago
Avatar for KissMyRobot

Taking inspiration from Pre-Order Colour Modular Analog Saturator but simply because I don't own a 500 series rack, I was...

replies: 40 views: 4,329
Avatar for coso
coso 1 day ago
Avatar for Brian M. Boykin

I started combining a 16/4/2 and a 24/4/2 into a 32/8/2. The 8 bus’s have 2 tape returns each giving 16 total. Plan is to track...

Brian M. Boykin
replies: 20 views: 739
Avatar for Brian M. Boykin
Brian M. Boykin 1 day ago
Avatar for Alex Specht

Been looking for output stepdown transformers online and so far the only readily available inexpensive parts ive found are the...

Alex Specht
replies: 16 views: 783
Avatar for Alex Specht
Alex Specht 1 day ago
Avatar for schelmusic

Hello, Ive recently pickup this mixer at very low cost and plan to use it with my small home studio setup. The Foldback sends...

replies: 1 views: 2,287
Avatar for EvLoutonian
EvLoutonian 1 day ago
Avatar for Pella

Hi, Im in the middle of restoring a Studer A67 that totaly lacks damper grease in the tape tension dampers. Reading up on the...

replies: 10 views: 345
Avatar for GLouie
GLouie 2 days ago
Avatar for raal

i've seen different transformers on ebay all claiming to be the original parts found in an LA2A: UTC A10, UTC A24, UTC HA100x...

replies: 4 views: 1,828
Avatar for Jim Williams
Jim Williams 2 days ago
Avatar for RBBlackstone

I am looking at a Neumann U87 for a friend. It is getting +48v, but is missing 24 volts at the zener diode. I don't have the...

replies: 8 views: 372
Avatar for mbrebes
mbrebes 2 days ago
Avatar for Mandala69

I had a problem with my Waldorf Q Rack's "shift" button so I opened my Waldorf Q Rack to see if it was a problem I...

replies: 0 views: 176
Avatar for Mandala69
Mandala69 2 days ago
Avatar for Mandala69

I had a problem with my Waldorf Q Rack's "shift" button so I opened my Waldorf Q Rack to see if it was a problem I...

replies: 0 views: 173
Avatar for Mandala69
Mandala69 2 days ago
Avatar for JohnnyBeGood510

I just got an Apollo firewire UAD interface....I wonder if this can work with my Mac Pro G5.1...since they can be connected with...

replies: 3 views: 462
Avatar for MichelleTanner
MichelleTanner 2 days ago
Avatar for u87allen

I'm a bit confused. I see some high end converters spec'ing in the 130dB range unweighted. But at 10mA the current noise(or...

replies: 31 views: 860
Avatar for u87allen
u87allen 2 days ago
Avatar for SAnthony

I am Looking for Schematics and any available Technical repair Info available on the Alesis Adat XT20. I have 2 of these with the...

replies: 7 views: 8,788
Avatar for jantoman
jantoman 2 days ago
Avatar for Jkee1400

I moved my gear to another buildling, and have crazy hum when using single coils. Like noise that is louder than the guitar...

replies: 13 views: 356
Avatar for RightOnRome
RightOnRome 2 days ago
Avatar for TeddyS

Long story shot found an old Eventide H3000SE lying on a shelf in a studio and decided to rescue it. The unit turns on, the...

replies: 9 views: 403
Avatar for Radardoug
Radardoug 2 days ago
Avatar for edoerr

I purchased a used Rokit 5 RPG2 powered speaker. It has almost no output audio. The TRS and XLR inputs act the same. I know my...

replies: 0 views: 161
Avatar for edoerr
edoerr 2 days ago
Avatar for i64

I was here a few years ago, I found a post from some dudes in the USA who teach music prod for a few weeks, they specialised in...

replies: 3 views: 299
Avatar for Jay Rose
Jay Rose 3 days ago
Avatar for c00kie

Folks, does anybody know if the "top cap assembly" for the light grey buttons (on, display select etc) is available...

replies: 4 views: 275
Avatar for wrgkmc
wrgkmc 3 days ago
Avatar for theBF

I spent the weekend trying to understand and improve the LA-610. I think I found a first step. Appreciate hearing from others...

replies: 22 views: 7,628
Avatar for Charleys
Charleys 3 days ago
Avatar for sorryguitarist

I have been trying to create my own reverbs using Waves IR1. I am using the provided sweep tone by Waves. Because I have limited...

replies: 0 views: 207
Avatar for sorryguitarist
sorryguitarist 3 days ago
Avatar for elektrovolt

Hi all, Last week I got a Korg Mono-poly synth that had been stored in its original box for at least twenty years. The synth...

replies: 13 views: 817
Avatar for salvaes
salvaes 3 days ago
Avatar for lahatte

So I got a dead Yamaha SPX 90, and I also have the schematic. Unfortunately the service manual does not tell me what voltages I...

replies: 59 views: 3,184
Avatar for dynamixii
dynamixii 4 days ago
Avatar for sbass

Hi, I'm new here and I have a request. I recently bought a Soundcraft 16/08 series II (early 70's). It's a beautiful one but it...

replies: 8 views: 2,652
Avatar for Jim Williams
Jim Williams 4 days ago
Avatar for Moulin

Hi dear community. Sorry to bring up an old topic but this one has not been solved yet: My Holy Grail Reissue broke. It looks...

replies: 6 views: 486
Avatar for Moulin
Moulin 4 days ago
Avatar for alexstringer

I see a lot of people building their own replica of the G384Fx and sharing the building process in forums but i've never seen (or...

replies: 63 views: 14,689
Avatar for SeanRyder
SeanRyder 4 days ago
Avatar for augustfay

Hello, like many have tried before me, I am going to build my own fader MIDI CC controller. I was about to buy ALPS faders but I...

replies: 0 views: 265
Avatar for augustfay
augustfay 4 days ago
Avatar for joe-electro

PM or email me if you've got one; joe (dot) electro (at) gmail (dot) com. Thanks!!! Joe

replies: 1 views: 959
Avatar for jml designs
jml designs 4 days ago
Avatar for rudolpho

I just found a pair of old RODE NT1 microphones at the bottom of my mic locker. I can only remember buying one so it must have...

replies: 107 views: 49,484
Avatar for LevinGuitar
LevinGuitar 5 days ago
Avatar for Mejis

Hi all, I picked up an Audio Developments AD062 (my second one actually) and it came with a mystery PSU. I opened it to take a...

replies: 1 views: 267
Avatar for Richard Crowley
Richard Crowley 5 days ago
Avatar for rtofvnt

... as per title. Hi, I think this will be my first post on this forum. I have Korg Krome that I'm planning to put up for...

replies: 5 views: 448
Avatar for rtofvnt
rtofvnt 5 days ago
Avatar for Mandala69

Interior views of the Waldorf Q Rack:

replies: 0 views: 236
Avatar for Mandala69
Mandala69 5 days ago
Avatar for Gionnibigudd

My beloved Palmer PDI 03 started producing a thin sound recently when connected. It seems like something into the chassis is...

replies: 0 views: 218
Avatar for Gionnibigudd
Gionnibigudd 5 days ago
Avatar for Capashitor

Hi, I'm in the process of replacing some parts in my pair of KT DN504's and my TC 2240. I'm filling the Tx output slots on...

replies: 5 views: 600
Avatar for Cassio2263
Cassio2263 5 days ago
Avatar for Rickard Bengtsso

Hi I am searching for a product or solution for my rack gear that not have a built in power switch on the front. I connect all...

Rickard Bengtsso
replies: 4 views: 284
Avatar for Cabirio
Cabirio 5 days ago
Avatar for Tony cheese

Hi, I bought a Japanese version of the Yamaha Rev7 and have been trying to convert the power supply to the 240V version as...

Tony cheese
replies: 2 views: 301
Avatar for Tony cheese
Tony cheese 6 days ago
Avatar for Noco

Hi I'm no expert on technical stuff and have done searches that have yielded similar results but nothing has worked so far. I...

replies: 12 views: 21,553
Avatar for rmixon48
rmixon48 6 days ago
Avatar for kflynt

Hello! I found a MK2 that was never opened and in it is original box for like 10 years. If I take it out, is there any...

replies: 6 views: 415
Avatar for Elsapo2001
Elsapo2001 6 days ago
Avatar for rojaros

Hello, I'm reposting this here as I think I posted it in the wrong forum in the first place: I'm trying to solve a problem...

replies: 10 views: 499
Avatar for u87allen
u87allen 1 week ago


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