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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: 91,897
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Timo Pascal 3 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: 482,987
Avatar for ulysses
ulysses 14th June 2019
Avatar for gabriel1

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

replies: 16 views: 44,055
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: 32,862
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for cononojoda

Hello, I recently let a technician "repair" my Harrison Console. He cleaned everything, swapped a few ICs... But the...

replies: 3 views: 438
Avatar for cononojoda
cononojoda 10 minutes ago
Avatar for pelaurendeau

Hi everybody, I bought a Philicorda 22GM751. The guy who sold it to me, told me straight away than the reverb wasn't working,...

replies: 3 views: 684
Avatar for EL504
EL504 7 hours ago
Avatar for owai

Hello, I'm trying to fix a Roland HP 2900g, but i can't find a schematic or a service manual. A small transistor...

replies: 5 views: 1,486
Avatar for Mr. HorseMagic
Mr. HorseMagic 8 hours ago
Avatar for StormLord11

My bass players amp head went dead recently and I'm trying to figure out what the problem is. When turned on and plugged into a...

replies: 2 views: 449
Avatar for StormLord11
StormLord11 12 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: 3 views: 547
Avatar for Radardoug
Radardoug 13 hours ago
Avatar for seaborg

This is a guide for replacing the screen in the Akai S900/950. The lcd screen was $8 it is a blue background with white script,...

replies: 3 views: 1,352
Avatar for MoodyStudios
MoodyStudios 17 hours 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: 4 views: 629
Avatar for Radardoug
Radardoug 18 hours ago
Avatar for Its Mork

Hi, I got myself a TT Patchbay, cables are soldered on already (thank god), but without plugs. I will need to solder strictly...

Its Mork
replies: 12 views: 779
Avatar for Its Mork
Its Mork 20 hours ago
Avatar for DonnyLuvd2Bowl

Ok-- was trying to track down some hum, seems to only be present when the control out to the monitors is plugged in, thinking...

replies: 0 views: 618
Avatar for DonnyLuvd2Bowl
DonnyLuvd2Bowl 23 hours ago
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: 7 views: 3,310
Avatar for S_mask
S_mask 1 day 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: 3,016
Avatar for Orson Maxwell
Orson Maxwell 1 day 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: 686
Avatar for producerxtr
producerxtr 1 day 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: 5,282
Avatar for JohnRoberts
JohnRoberts 2 days 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: 520
Avatar for gyraf
gyraf 2 days 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: 1,714
Avatar for Transmutant
Transmutant 2 days 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: 1,174
Avatar for Paul Gold
Paul Gold 2 days 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: 601
Avatar for deethefur888
deethefur888 2 days 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: 647
Avatar for Setze
Setze 2 days 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: 801
Avatar for Jarjar
Jarjar 3 days 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: 1,321
Avatar for Jarjar
Jarjar 3 days 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: 583
Avatar for Jim Williams
Jim Williams 3 days 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: 1,188
Avatar for S_mask
S_mask 3 days 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: 507
Avatar for Radardoug
Radardoug 3 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: 569
Avatar for victorianaylor
victorianaylor 3 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: 753
Avatar for Dronomite
Dronomite 4 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: 544
Avatar for Amsoily
Amsoily 4 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: 724
Avatar for dfchandler
dfchandler 4 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: 452
Avatar for Amsoily
Amsoily 4 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: 592
Avatar for DrewE
DrewE 4 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: 500
Avatar for tchgtr
tchgtr 5 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: 551
Avatar for Bushman
Bushman 5 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: 2,161
Avatar for snod_donkey
snod_donkey 5 days ago
Avatar for iaw1978

Anyone have an English version of the link...

replies: 0 views: 568
Avatar for iaw1978
iaw1978 6 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: 1,707
Avatar for musicfirst234
musicfirst234 6 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: 730
Avatar for StormLord11
StormLord11 6 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: 2,026
Avatar for Dronomite
Dronomite 1 week 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: 22,433
Avatar for Lorenzop
Lorenzop 1 week 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: 659
Avatar for thechrisl
thechrisl 1 week 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: 629
Avatar for synthophile
synthophile 1 week 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: 768
Avatar for synthophile
synthophile 1 week 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: 11,979
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: 800
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: 810
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: 692
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: 11,819
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: 816
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: 8,229
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: 992
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: 9,175
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: 816
Avatar for CRK
CRK 1 week ago


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