The No.1 Website for Pro Audio

Announcement: Black Friday/Cyber Week 2020 Whitecat
27th November 2020 Views: 482
Views: 482
27th November 2020
Thread / Thread Starter Replies / Views Last Post
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: 83 views: 117,188
Avatar for opacheco
opacheco 1 day 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: 546,322
Avatar for pan60
pan60 1 week ago
Avatar for gabriel1

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

replies: 19 views: 54,842
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: 43,916
Avatar for msbettyhunt
msbettyhunt 24th March 2020
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: 92 views: 1,397
Avatar for Hayman
Hayman 54 minutes 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: 8 views: 227
Avatar for pajczur
pajczur 1 hour 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: 2 views: 356
Avatar for Radardoug
Radardoug 11 hours 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: 16 views: 5,505
Avatar for rbbrchckn
rbbrchckn 12 hours 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: 648
Avatar for Mastropiero
Mastropiero 16 hours 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: 1,434
Avatar for Rick Dalton
Rick Dalton 17 hours 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: 190
Avatar for gearstudent
gearstudent 19 hours 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: 116
Avatar for pidr
pidr 1 day 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: 115
Avatar for fredrikberg
fredrikberg 1 day 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: 106
Avatar for opacheco
opacheco 1 day 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: 519
Avatar for Speedskater
Speedskater 1 day 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: 53 views: 7,274
Avatar for hnbcstudios
hnbcstudios 1 day 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: 136
Avatar for Thomas W. Bethe
Thomas W. Bethe 1 day 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: 141
Avatar for isoparmesan
isoparmesan 1 day 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: 198
Avatar for valis
valis 1 day 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: 352
Avatar for Sypowicz
Sypowicz 1 day 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: 16 views: 4,460
Avatar for teddymusic
teddymusic 2 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: 301
Avatar for deondamage
deondamage 2 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: 7,199
Avatar for shakemake
shakemake 3 days 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: 290
Avatar for Rick Dalton
Rick Dalton 3 days 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: 4,411
Avatar for Checky
Checky 3 days 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: 116
Avatar for CFB4
CFB4 3 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: 13 views: 343
Avatar for konstantingroove
konstantingroove 3 days 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: 423
Avatar for Jidis
Jidis 3 days 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: 115
Avatar for plutoniq
plutoniq 4 days ago
Avatar for fabstudios

FAB V11 transformer bargain on ebay: Contact: [email protected] for further...

replies: 3 views: 249
Avatar for analogguru
analogguru 4 days 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: 1,782
Avatar for mustygoose
mustygoose 4 days 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: 160
Avatar for StanMan
StanMan 4 days 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: 262
Avatar for ma_headphone
ma_headphone 4 days 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: 0 views: 125
Avatar for mogazi!
mogazi! 5 days 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: 29,807
Avatar for crunchyDalek
crunchyDalek 5 days 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: 289
Avatar for NYIslanders
NYIslanders 5 days 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: 3,477
Avatar for tyskstil
tyskstil 5 days 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: 1,850
Avatar for Uby62
Uby62 6 days ago
Avatar for Its Mork

I saw Jacquire King talk about this in a puremix vid and later on in a livestream with F. Reid Shippen and Vance Powell. They...

Its Mork
replies: 37 views: 3,260
Avatar for JohnRoberts
JohnRoberts 6 days ago
Avatar for TMI

I have located a small number of NOS a/d converters for the Lexicon PCM 80 PCM 90 series of digital reverbs that I am using for...

replies: 109 views: 28,742
Avatar for Sypowicz
Sypowicz 1 week ago
Avatar for forrestaudio

Hey all! So I have a fun electronics problem here, figured this thread was probably the one to go to since I don't know where...

replies: 2 views: 259
Avatar for Philbo King
Philbo King 1 week ago
Avatar for Patrick H

Hey everyone. I have a Lawson L47MPII tube mic that I love, but it has a blue led inside the head that is activated when switched...

Patrick H
replies: 9 views: 720
Avatar for Patrick H
Patrick H 1 week ago
Avatar for Pasterofmuppets

Whelp, I’ve owned this ADAT LX20 since new for $1400, and it won’t power up. I found some free time today to open it up, and...

replies: 1 views: 319
Avatar for rbbrchckn
rbbrchckn 1 week ago
Avatar for Jidis

I recently attempted to restore a dbx 224X-DS noise reduction unit. I replaced all the electrolytics, along with a panel...

replies: 0 views: 172
Avatar for Jidis
Jidis 1 week ago
Avatar for recordinghopkins

Tonight the 17v +/- lights went out on my power supply. I have yet to remove it from the rack, but I was curious to see if anyone...

replies: 150 views: 29,669
Avatar for ronerone
ronerone 1 week ago
Avatar for Cursed Lemon

Hey guys, so kind of a convoluted question here. I'm aiming to make a very convincing mimic of a voice coming through radio...

Cursed Lemon
replies: 18 views: 980
Avatar for SRS
SRS 1 week ago
Avatar for Slutty Professor

Hi, anyone know of a replacement part for the transformer in an Ensoniq Mirage DSK-8 (black version)? The old one is humming...

Slutty Professor
replies: 0 views: 152
Avatar for Slutty Professor
Slutty Professor 1 week ago
Avatar for sprawl

I would like to modify my recently acquired Juno-60 from 110v to 220v. Usually i don't buy equipment that runs on the wrong...

replies: 3 views: 218
Avatar for mbrebes
mbrebes 1 week ago
Avatar for Kedwards

Hope you are all well, I'm a student from SE England, I've restored a Studer A990 over the last few months, I picked it up...

replies: 3 views: 361
Avatar for Thomas W. Bethe
Thomas W. Bethe 1 week ago
Avatar for jjj333

It was always my ambition to create an easy to learn and play accordion style musical instrument, but it took me ages to get my...

replies: 0 views: 150
Avatar for jjj333
jjj333 1 week ago
Avatar for georgerarnold

Hello, Pretty niche question here: I have two Stam Audio SA-76s, the older ones with silver faceplate and blue...

replies: 2 views: 537
Avatar for Sircalhobz
Sircalhobz 1 week ago
Avatar for noah330

I have a Roland R-8M that someone gave me. I plugged it in and did a factory reset and hooked it up. It sends/receives MIDI fine...

replies: 0 views: 293
Avatar for noah330
noah330 1 week ago
Avatar for Amptech Services

Hi all - does anyone have a schematic for a Ramsa WP9110 power amplifier? Thanks in anticipation if you...

Amptech Services
replies: 6 views: 6,647
Avatar for Ike Zimbel
Ike Zimbel 1 week ago
Avatar for lemix

I have a nasty problem that started a year go with my pair of Dorrough 40-A analog meters. I've had them for 6 or so years, used...

replies: 4 views: 580
Avatar for lemix
lemix 1 week ago


Forum Tools
Search this Forum
Search this Forum :

Advanced Search