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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: 71 views: 91,844
Avatar for Timo Pascal
Timo Pascal 2 days 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: 1,094 views: 482,882
Avatar for ulysses
ulysses 4 weeks ago
Avatar for gabriel1

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

replies: 16 views: 44,031
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: 32,839
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for suchenderxxx

Cheers, i have got an Marantz Pmd 740 Six channel Mixer and 4 Track Recorder. Works and sounds good. Only Problem is that the...

replies: 6 views: 3,216
Avatar for rosson
rosson 1 hour ago
Avatar for frankthefunky1

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

replies: 18 views: 2,990
Avatar for Orson Maxwell
Orson Maxwell 6 hours ago
Avatar for producerxtr

Hello there, We are looking for a company or an individual who can help us design and manufacture custom headphone drivers....

replies: 2 views: 496
Avatar for producerxtr
producerxtr 7 hours ago
Avatar for beatsnblunts

im looking for service help on a ua2192? Schematics or parts? Or LA based tech familiar with? UA just told me that they dont...

replies: 2 views: 499
Avatar for beatsnblunts
beatsnblunts 10 hours ago
Avatar for soundrick

I have seen some of you guys are members of GroupDIY as well.... I have tried to register on this site with ZERO success. Is...

replies: 41 views: 5,245
Avatar for JohnRoberts
JohnRoberts 12 hours ago
Avatar for Farmboy presents

I just built and troubleshot a Gssl compressor kit. It works perfectly!!! It took a while to track down all the faults, nearly...

Farmboy presents
replies: 1 views: 439
Avatar for gyraf
gyraf 17 hours ago
Avatar for Transmutant

Mixer mod


Hi I have a Soundtracs 32/4/2 mixer, not used at the moment but still a good unit. Just feel it's a bit lifeless... I'm going to...

replies: 61 views: 1,672
Avatar for Transmutant
Transmutant 18 hours ago
Avatar for taarak

Hello, I don't know how to formulate an objective question for this, and it may be already answered, so please say to me if...

replies: 33 views: 1,125
Avatar for Paul Gold
Paul Gold 1 day ago
Avatar for deethefur888

Hi! I just bought Korg Microkorg s in Japan. It use 9v power adapter which originally meant to be used for Japanese socket which...

replies: 4 views: 561
Avatar for deethefur888
deethefur888 1 day ago
Avatar for Setze

Hi Are there any empty chassis TAB V72 size out there for sale? I'd like to clone my own design and use it in a suitable...

replies: 0 views: 582
Avatar for Setze
Setze 1 day ago
Avatar for Jarjar

Hi all, I just bought a 160X that needs a new compression ratio pot. Anyone know a source for these or an equivalent part...

replies: 5 views: 760
Avatar for Jarjar
Jarjar 1 day 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: 14 views: 1,300
Avatar for Jarjar
Jarjar 1 day ago
Avatar for Santiago

Hi, I have had for a while a Ross distortion pedal (the early tan version made in the US) that I like a lot, as it can go from...

replies: 1 views: 546
Avatar for Jim Williams
Jim Williams 1 day ago
Avatar for merseymale

Hi! I used to own the line 6 DM4 distortion moddler, Years ago and I eventually modded it (I never had an expression pedal) to...

replies: 11 views: 1,167
Avatar for S_mask
S_mask 1 day ago
Avatar for Timo Pascal

Hi, I'm looking for the Service Manual for the FOSTEX 450 Mixer. I can find it as a download for 45,- $ but I don't have the...

Timo Pascal
replies: 1 views: 471
Avatar for Radardoug
Radardoug 2 days ago
Avatar for victorianaylor

LR16 PROBLEMS hì folks I have owned the LR16 for several years without any major issues until now. When powering up, the...

replies: 0 views: 531
Avatar for victorianaylor
victorianaylor 2 days ago
Avatar for Dronomite

Hi. I have a problem with the gain control on my Axxe. When I bring the Gain slider up, a tone is also rising, like a hold tone....

replies: 1 views: 716
Avatar for Dronomite
Dronomite 2 days ago
Avatar for Amsoily

Ok, I'm going to Steal & Do it Myself Optical Compressor. Enclosure 2x Aphex 1404 2x Parmer Reamp...

replies: 0 views: 511
Avatar for Amsoily
Amsoily 2 days ago
Avatar for tourtelot

If anyone has one, knows a source, or knows of a DL, I'd appreciate it. I need to find the meter trimmers. PM me please...

replies: 1 views: 690
Avatar for dfchandler
dfchandler 3 days ago
Avatar for 1337_De_Hard

Greetings Gear Slutz! This is my first post on these forums! I have been interested in key detection for some time, but...

replies: 1 views: 418
Avatar for Amsoily
Amsoily 3 days ago
Avatar for RE201

A while back I came across a pair of mystery stuffed pcbs which seem to be some kind of (maybe) Pultec-like passive eq. What...

replies: 4 views: 557
Avatar for DrewE
DrewE 3 days ago
Avatar for samwolfson

Hey all, I'm beginning research into the process of repairing and refurbishing a tube amplifier I bought at a local guitar...

replies: 3 views: 465
Avatar for tchgtr
tchgtr 3 days ago
Avatar for atharanic

Hi! Need help. One of my M1 Active 520 SCREAMS super loud and has the red ring when I turn it on. Fiddling with the volume...

replies: 3 views: 515
Avatar for Bushman
Bushman 3 days ago
Avatar for 386

I recently purchased a preowned Black Lion Audio Auteur Micro preamp (the original one not MKII). The previous owner has done a...

replies: 2 views: 576
Avatar for 386
386 4 days ago
Avatar for snod_donkey

Looking for some help on a few bits i have picked up.. Pulling my hair out trying to find anything on this gear.. I have just...

replies: 4 views: 2,142
Avatar for snod_donkey
snod_donkey 4 days ago
Avatar for iaw1978

Anyone have an English version of the link...

replies: 0 views: 535
Avatar for iaw1978
iaw1978 4 days ago
Avatar for waveterm

Hi, does anyone know what model and make the dual concentric pot for input/output level is used in the Aphex 9651 Expressor...

replies: 5 views: 1,687
Avatar for musicfirst234
musicfirst234 5 days ago
Avatar for StormLord11

So I think the title is pretty self explanatory.. anytime I hit a key, any key, on my D50, it plays at full velocity. I tried...

replies: 0 views: 698
Avatar for StormLord11
StormLord11 5 days ago
Avatar for Mablonowski Jarc

I´ve found an old Dynacord ADS at my workplace and I wondered what this thing would sound like. So I tried to power on - and...

Mablonowski Jarc
replies: 6 views: 1,966
Avatar for Dronomite
Dronomite 5 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: 81 views: 22,389
Avatar for Lorenzop
Lorenzop 5 days ago
Avatar for thechrisl

I have a bunch of decade + old Tripp-Lite Isobar surge protectors in my gear collection. As far as overall quality goes, they...

replies: 4 views: 624
Avatar for thechrisl
thechrisl 6 days ago
Avatar for synthophile

Hi, I desperately need some basic information from a guy who have access inside of Kirovsky RITM 2 synth or at least know it...

replies: 1 views: 597
Avatar for synthophile
synthophile 6 days ago
Avatar for synthophile

Hey there! (Jump to Current situation for escaping boring parts) Recently I bought a soviet famous Kirovsky's РИТМ-02...

replies: 3 views: 749
Avatar for synthophile
synthophile 6 days ago
Avatar for MainTime

Hello, Silverstone wrote that it's possible to make a nice Di Box, which is used on Nashville studio, based on WE 111C ...

replies: 91 views: 11,948
Avatar for 12ax7
12ax7 1 week ago
Avatar for electronicmusic

Does anyone know what would cause this behavior? There is no audio in the signal path.

replies: 2 views: 765
Avatar for electronicmusic
electronicmusic 1 week ago
Avatar for synthophile

DO NOT PANIC! The whole topic is about just 1 pin. Hi everyone. I've got a Roland SPD-S 9 sampling drum pad which the owner has...

replies: 1 views: 776
Avatar for synthophile
synthophile 1 week ago
Avatar for Mr Q

Hi folks, I imagine i have a multiway cable with DB25 Tascam pinout at both ends. This cable will work for both analog as...

Mr Q
replies: 1 views: 659
Avatar for Mr Q
Mr Q 1 week ago
Avatar for mexicola

Just saw this while ordering parts on mouser today LME49710NA/NOPB Texas Instruments | Mouser Same for the 49720. Sigh :(

replies: 57 views: 11,792
Avatar for Brian M. Boykin
Brian M. Boykin 1 week ago
Avatar for jennabowen

I have large number of OST files that I want to convert into Outlook PST file. Is there any solution available to convert...

replies: 2 views: 784
Avatar for dayanajoy
dayanajoy 1 week 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: 23 views: 8,210
Avatar for chrisdee
chrisdee 1 week ago
Avatar for kroegermusic

Hey Everyone, I'm wondering if someone could tell me where I can source the Old School Output gain knobs that Brent Used on...

replies: 2 views: 974
Avatar for kroegermusic
kroegermusic 1 week ago
Avatar for aaeronn

Soooooo, Both amps in my ASP8s developed the same failure within a few months of each other - the woofer pulses/thumps even...

replies: 40 views: 9,154
Avatar for MikeInOttawa
MikeInOttawa 1 week ago
Avatar for CRK

For some reason when slaving the Roland CR 8000 to an external DIN Sync clock, I get a hum out of the output jack. When clocking...

replies: 3 views: 783
Avatar for CRK
CRK 1 week ago
Avatar for bass man

Hi I have 3 gefell pm 750 mics . Two of them sound the same and the third one is much louder (like 10 db) and has more bass ....

bass man
replies: 8 views: 9,575
Avatar for chthoniangod
chthoniangod 1 week ago
Avatar for gearstudent

Hello, There are small diaphragm condenser mics (like the DPA 4006) that are designed specifically to be omni. They don't even...

replies: 12 views: 779
Avatar for legato
legato 1 week ago
Avatar for Explodey

Hi folks, a few of you might remember the audiotape scratching device that I built a year or so ago. For those of you who don't,...

replies: 17 views: 1,371
Avatar for Jay Rose
Jay Rose 1 week ago
Avatar for mattlessley

Hey guys, first post here so forgive me if this is the wrong place. I have 8 channels of toft atb channel strips that i would...

replies: 0 views: 731
Avatar for mattlessley
mattlessley 1 week ago
Avatar for dotted8

Hi, I have a problem with my Sp 12 turbo. Worked fine for years. Now, after booting up, the display shows a non turbo version....

replies: 1 views: 624
Avatar for Cozmik Prod.
Cozmik Prod. 1 week ago
Avatar for username

I know you can raise a mics impedance by putting a resistor across (or in series with I believe) pins 2 and 3.. is there a...

replies: 19 views: 10,389
Avatar for Richard Crowley
Richard Crowley 1 week ago
Avatar for Destitute

Hey all, first off sorry if I've posted this in the wrong place. So, I have a Fender Champion 40, it's a solid state guitar...

replies: 7 views: 750
Avatar for tINY
tINY 1 week ago


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