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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: 84 views: 117,271
Avatar for gyraf
gyraf 1 hour 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: 1,151 views: 546,529
Avatar for pan60
pan60 2 weeks ago
Avatar for gabriel1

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

replies: 19 views: 54,878
Avatar for msbettyhunt
msbettyhunt 27th March 2020
Avatar for Tim Farrant

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

Tim Farrant
replies: 9 views: 43,949
Avatar for msbettyhunt
msbettyhunt 24th March 2020
Avatar for arch1

Turned on my ghost 32 power supply and it died on me. CPS 275. No power to the board, fan stopped also. The center and right...

replies: 26 views: 2,437
Avatar for SP2016
SP2016 4 minutes ago
Avatar for lore

Hello , does somedy know if a soundcraft DCP100 PSU taken from a spirit live is compatible with a Delta DLX 16/4/2 , the...

replies: 2 views: 150
Avatar for lore
lore 44 minutes 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: 54 views: 7,352
Avatar for turing
turing 2 hours ago
Avatar for jml designs

I'm attaching a clip of my new 1963 u67 making an odd "fluttering" sound that seems to come and go (listen with...

jml designs
replies: 4 views: 82
Avatar for jml designs
jml designs 4 hours ago
Avatar for gouge

I'm about to undertake some mods to my VLA and thought it would be fun for anyone else keen to do the same to join in the...

replies: 28 views: 7,867
Avatar for traw
traw 9 hours ago
Avatar for pajczur

Hello, at first I need to say that of course I've already read planty articles about feedback compression. And I know all those...

replies: 12 views: 356
Avatar for ruffrecords
ruffrecords 12 hours ago
Avatar for daversonbass

Hi all, There are some other topics about this on other forums, but all links seem to be dead at this point. I was wondering,...

replies: 2 views: 107
Avatar for daversonbass
daversonbass 16 hours ago
Avatar for faridbostan

Hello everyone How can i open this thing? grrr there isn't any screws

replies: 4 views: 138
Avatar for faridbostan
faridbostan 18 hours ago
Avatar for kinganalog

Hey everyone ,Im looking for a pdf or photocopy of a 1975 MCI jh-16 (non quior) tape machine . If anyone has any ideas who might...

replies: 24 views: 2,177
Avatar for HeadlessDinosaur
HeadlessDinosaur 1 day ago
Avatar for mogazi!

Hello, I'm just in the process of recapping a whole bunch of Allison Research Kepex 500 gates (the black 70s ones) and...

replies: 2 views: 192
Avatar for mogazi!
mogazi! 1 day ago
Avatar for AvS

I was thinking about trying some other tubes for my Summit pre but i dont know anything about changing tubes so bare with me. Is...

replies: 17 views: 5,569
Avatar for rbbrchckn
rbbrchckn 1 day ago
Avatar for Martin Elsey

Hi There I have a KRK VXT8 monitor with a couple of short-circuit burnt up diodes in the D3 and D4 circuit positions. Can...

Martin Elsey
replies: 0 views: 98
Avatar for Martin Elsey
Martin Elsey 1 day ago
Avatar for D40Oz

Surprisingly the Samson c01 and c01u pro are the best microphones for my voice out of a hundred mics I’ve tried But the hiss...

replies: 2 views: 118
Avatar for D40Oz
D40Oz 1 day ago
Avatar for Yoski

Hello Guys! It‘s the second time I bring up my Otari MX7000. It‘s fully restored now. I swaped all caps and bearings,...

replies: 8 views: 1,118
Avatar for Yoski
Yoski 1 day ago
Avatar for symby

I'm trying to find a studio vocal mic that has the highest quality possible. Anybody know of any kind?

replies: 4 views: 240
Avatar for Thomas W. Bethe
Thomas W. Bethe 2 days ago
Avatar for frenkonio

Hi guys, I need your help for a strange issue related to a Lexicon Larc. I got a M300L, I bought it used and thought, as the...

replies: 11 views: 918
Avatar for chicko
chicko 2 days ago
Avatar for konstantingroove

Hi everyone, i have a strange dilemma with the ATR tapes/flanges. I got a few of those and keep getting tape rub against the...

replies: 19 views: 508
Avatar for beats workin'
beats workin' 2 days ago
Avatar for sameal

Hello! I probably have failing components, but just to be sure, is there anything in this circuit on the 4 mic inputs only...

replies: 6 views: 446
Avatar for sameal
sameal 2 days ago
Avatar for Sailor Hope

Hi, today the front capsule(?), or, the gridded 3-4mm steel cap on the front of the mic, just fell off - and all the high end...

Sailor Hope
replies: 48 views: 7,385
Avatar for DavidChampoux
DavidChampoux 2 days ago
Avatar for dreske

Howdy. I want to start using higher sample rates (176 or 192), but have found that with both if the two different converters...

replies: 52 views: 6,224
Avatar for tekn0
tekn0 2 days ago
Avatar for Hayman

Hi GS I just bought this small Yamaha PM430 and are about to start working on it. It has been years since I last did something...

replies: 100 views: 1,667
Avatar for Cabirio
Cabirio 2 days ago
Avatar for Deadletteroffice

Hey all, wasn't sure where to post this so I'm trying here. I'm curious to buy a Hairball Rev D, but not confident to build it...

replies: 1 views: 348
Avatar for Catabolic
Catabolic 2 days ago
Avatar for ArntzenArtizterier

Hi, my Echolette Klemt M40 amp has suddenly started to get a pretty loud humming in the low frequencies, even when the gain and...

replies: 0 views: 141
Avatar for ArntzenArtizterier
ArntzenArtizterier 2 days ago
Avatar for sat159p1

Can you recommend me the best tube to use with spl mk2-t vitalizer? Unit has stock Sovtek 12AX7LPS tubes (one operating in stereo...

replies: 17 views: 4,538
Avatar for Sound Arch
Sound Arch 3 days ago
Avatar for Peewee76384

I have 40ch Series TWO, I have a brand new Blue Dog power supply. I rewired the studio ins and outs, got my motor humming, then...

replies: 1 views: 137
Avatar for Jim Williams
Jim Williams 3 days ago
Avatar for jasonnevis

Hi all, I've got an Oberheim Matrix 6 and currently it's power supply is set to 110v. After opening it up, I can see a sticker...

replies: 4 views: 687
Avatar for Mastropiero
Mastropiero 4 days ago
Avatar for whinylittlerunt

Need some help verifying an issue and identifying parts: Have an Avalon 737sp on the bench, appears to have a bad transformer...

replies: 8 views: 1,470
Avatar for Rick Dalton
Rick Dalton 4 days ago
Avatar for gearstudent

Hello, Faders on a normal mixer take many sound inputs, and mix them down to a single stereo output. I was wondering if the...

replies: 4 views: 260
Avatar for gearstudent
gearstudent 4 days ago
Avatar for pidr

I recently bought Poly61m and it works fine, in general. It required some basic maintenance so I replaced the original battery,...

replies: 0 views: 153
Avatar for pidr
pidr 5 days ago
Avatar for fredrikberg

Hi! I have a AMR 1600 console that have this problem. If I go out to off mixbus on Send L/R everything is fine. If I'm...

replies: 4 views: 149
Avatar for fredrikberg
fredrikberg 5 days ago
Avatar for opacheco

Hi to everyone! Do someone have the CROWN XLi 3500 schematic? I have searched in the web but found nothing about! I...

replies: 2 views: 136
Avatar for opacheco
opacheco 5 days ago
Avatar for ChayaFFM

Is there something like the Radial JDI Stereo but without the padding down into mic level? Meaning just pure transformer...

replies: 22 views: 575
Avatar for Speedskater
Speedskater 5 days ago
Avatar for camargyle

I inherited a few patch bays, now I’m on the hunt for a discontinued PUNCHING TOOL! I believe it’s a QB-2 or QB-4 or QPC-115....

replies: 3 views: 176
Avatar for Thomas W. Bethe
Thomas W. Bethe 5 days ago
Avatar for isoparmesan

I have an Alesis MultiMix 12R (not the greatest mixer, I know). It works fine for the most part, does what I need it to do. But,...

replies: 2 views: 172
Avatar for isoparmesan
isoparmesan 5 days ago
Avatar for valis

I have 2 DSP cards (PCI based) that I'd love to service--even though they are still in operation. I have already had 1 fail...

replies: 3 views: 238
Avatar for valis
valis 5 days ago
Avatar for Sypowicz

Hello im in the process of fixing up my atb a bit. If anyone dabbled in changing pots and faders help me out pls. What pot to...

replies: 4 views: 385
Avatar for Sypowicz
Sypowicz 5 days ago
Avatar for UsedEQuipment

Well, the title says it: i can hear some local radio station playing in my headphones plugged into Mackie Onyx. I am not hearing...

replies: 3 views: 336
Avatar for deondamage
deondamage 6 days ago
Avatar for sonotor

hello I have a sony mxp 29 mixer and I would like to add a direct out on each channel! Could you help me to pick the signal...

replies: 29 views: 7,241
Avatar for shakemake
shakemake 1 week ago
Avatar for opacheco

Hi to everyone! I am having problems with a CROWN IT-6000 amplifier, this amp turn on but in few seconds after of the rutinary...

replies: 9 views: 319
Avatar for Rick Dalton
Rick Dalton 1 week ago
Avatar for frankthefunky1

Good day everybody. I own an Akai MPK88 midi controller. Three keys have problems hitting full velocity. These particularly...

replies: 21 views: 4,454
Avatar for Checky
Checky 1 week ago
Avatar for 3stamme

I will probably get crucified for posting this thread, but I have googled everywhere to find an answer for this, and cannot find...

replies: 1 views: 147
Avatar for CFB4
CFB4 1 week ago
Avatar for Jidis

This thing shows up in the service manual for a dbx type II noise reduction unit. It's used to produce a simultaneous stepped...

replies: 12 views: 454
Avatar for Jidis
Jidis 1 week ago
Avatar for plutoniq

I’m restoring an Eventide HD949 I bought a few years back not working correctly. Because I can’t “just repair something”,...

replies: 0 views: 147
Avatar for plutoniq
plutoniq 1 week ago
Avatar for thermal

I am trying to replace the cable/minijack assembly on my Beyerdynamic DT990's and have obviously resoldered the thing...

replies: 6 views: 1,820
Avatar for mustygoose
mustygoose 1 week ago
Avatar for StanMan

Hi, I can't seem to find a solution for this, but I know it exists. I have multiple interfaces, such as Motu 8pre-es, Motu 624...

replies: 2 views: 202
Avatar for StanMan
StanMan 1 week ago
Avatar for ma_headphone

Hi. I'd like to add transformer colouring in my processing chain, I've been reading a bit on how it works, but it would be nice...

replies: 3 views: 300
Avatar for ma_headphone
ma_headphone 1 week ago
Avatar for Jerz3455

Hey guys.. Im a bit fed up with Genelec right about now. This is my second time blowing my amp card module within 6 months time....

replies: 52 views: 29,865
Avatar for crunchyDalek
crunchyDalek 1 week ago
Avatar for NYIslanders

Power had gone out in my Behringer FCA1616 audio interface. Opened it up and found the C30 capacitor had exploded....

replies: 3 views: 323
Avatar for NYIslanders
NYIslanders 1 week ago
Avatar for Deleted c117a9d

Says it's disabled... anybody know how can I register? I wanted to ask some questions about Hairball's preamp kits over there and...

Deleted c117a9d
replies: 41 views: 3,519
Avatar for tyskstil
tyskstil 1 week ago
Avatar for Uby62

Hi everyone! I need to repair a Ddrum AT module : the trigger inputs are not working and i have distortion on outputs, and the...

replies: 13 views: 1,876
Avatar for Uby62
Uby62 1 week ago


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