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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: 86,408
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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: 466,471
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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: 41,443
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: 30,260
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Aniol1349 10th June 2017
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: 197
Avatar for SeanRyder
SeanRyder 4 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: 0 views: 79
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tomhetas 5 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: 452
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francociccio 10 hours 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: 7 views: 293
Avatar for Richard Crowley
Richard Crowley 11 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: 7,912
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blackjono2000 14 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: 142
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whatever17 14 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: 189
Avatar for wrgkmc
wrgkmc 14 hours ago
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: 4 views: 270
Avatar for Richard Crowley
Richard Crowley 16 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: 2,341
Avatar for Jim Williams
Jim Williams 17 hours 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: 3,119
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: 4,323
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: 736
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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: 781
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: 2,286
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: 343
Avatar for GLouie
GLouie 1 day 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: 1,825
Avatar for Jim Williams
Jim Williams 1 day 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: 370
Avatar for mbrebes
mbrebes 1 day 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: 172
Avatar for Mandala69
Mandala69 1 day 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: 171
Avatar for Mandala69
Mandala69 1 day 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: 461
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: 859
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: 8,785
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: 354
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: 400
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: 159
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: 297
Avatar for Jay Rose
Jay Rose 2 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: 273
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wrgkmc 2 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: 7,627
Avatar for Charleys
Charleys 2 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: 205
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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: 816
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: 3,183
Avatar for dynamixii
dynamixii 3 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: 2,649
Avatar for Jim Williams
Jim Williams 3 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: 485
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: 14,686
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: 262
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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: 958
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: 49,471
Avatar for LevinGuitar
LevinGuitar 4 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: 265
Avatar for Richard Crowley
Richard Crowley 4 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: 446
Avatar for rtofvnt
rtofvnt 4 days ago
Avatar for Mandala69

Interior views of the Waldorf Q Rack:

replies: 0 views: 235
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: 214
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: 598
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: 282
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: 299
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: 21,543
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: 412
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: 498
Avatar for u87allen
u87allen 6 days ago
Avatar for Frizle

Hi there everyone, I just signed up and it's my first post -- I hope it's in the right section. I own a Tascam DP-02CF...

replies: 0 views: 253
Avatar for Frizle
Frizle 1 week ago
Avatar for floeff

Hi there, I couldn't find a fitting section for this so I just decided to post it here. So, I found this keyboard from the 80s...

replies: 12 views: 5,436
Avatar for JMJmyzick
JMJmyzick 1 week ago
Avatar for hohohoho

Hi. I want to build a smart A/B switch for the guitar (attaching a picture). The idea is to have a stomp box with two...

replies: 2 views: 381
Avatar for Cabirio
Cabirio 1 week ago


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