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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: 66 views: 82,127
Avatar for Philbo King
Philbo King 5 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: 1,071 views: 449,721
Avatar for gyraf
gyraf 1 week ago
Avatar for gabriel1

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

replies: 16 views: 39,315
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: 28,250
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for grizzlycables

Does anyone know where i can find neutrik connectors cheap wholesale. I've been looking everywhere and the prices are always the...

replies: 8 views: 484
Avatar for cbc6403
cbc6403 34 minutes ago
Avatar for Alvin Row

Hey i dont know if this is the right section to ask but i am working on my russian TOM 1501 synth and i noticed that some of the...

Alvin Row
replies: 5 views: 122
Avatar for Alvin Row
Alvin Row 4 hours ago
Avatar for tomatoKetchup

Hello all, I'm doing a bit of investigation on this filter and trying to figure out: what was the famous "critical"...

replies: 0 views: 90
Avatar for tomatoKetchup
tomatoKetchup 6 hours ago
Avatar for The Untuned

My Korg DRV 3000 (vintage reverb/delay) says in the display: internal memory low. So I have to change the internal battery. I...

The Untuned
replies: 1 views: 241
Avatar for Northamusi
Northamusi 8 hours ago
Avatar for BHW

I have problems with my Zoom 9010, if i switch to routing 3 and use on e1 and e2 and phaser. I have problems on the e1 channel....

replies: 0 views: 102
Avatar for BHW
BHW 9 hours ago
Avatar for Jack Duelisis

Hi I have a weird problem. My OB8 has a tuning issue. Around E4, it drops about 3,2 semitones. The calibrations are ok the...

Jack Duelisis
replies: 20 views: 1,540
Avatar for Sonate
Sonate 10 hours ago
Avatar for MrTeach

Im an old musician/composer who decided to make something again after over 25 years of pause. Have some old relic instruments...

replies: 3 views: 299
Avatar for zamproject
zamproject 10 hours ago
Avatar for Spano

Hey everybody how are you? ^^) I want to try building a guitar cabinet it seems like it could be an easy way to really branch...

replies: 8 views: 635
Avatar for lame pseudonym
lame pseudonym 10 hours ago
Avatar for jetproplabs

I have a lomo 19a9 that I bought about ten years ago. The power supply is a pretty straight forward box like a neumann, AKG,...

replies: 12 views: 2,329
Avatar for rozovoku4e
rozovoku4e 17 hours ago
Avatar for dsaudio

I'm wondering what is causing the periodic static bursts on output #14 on my Alesis HD24XR recorder. The static only appears on...

replies: 0 views: 181
Avatar for dsaudio
dsaudio 1 day 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: 15 views: 1,660
Avatar for joesilver
joesilver 1 day ago
Avatar for rachtaia

Hi I was looking for a service manual and someone suggest me to ask here. I repair some old stuff as tube amps, pedals,...

replies: 1 views: 305
Avatar for Synth Guru
Synth Guru 1 day ago
Avatar for SP2016

I own a brand new Eventide Orville (old stock) and intended to use it again. When it boots it says it is a DSP7000 (!!), and get...

replies: 7 views: 388
Avatar for electricsound
electricsound 1 day ago
Avatar for Pinebox Studio Services

I have a PSU for a Gefell UN-920 that has a patter selector switch which has mechanically failed. I contacted Gefell and they...

Pinebox Studio Services
replies: 1 views: 289
Avatar for Pinebox Studio Services
Pinebox Studio Services 2 days ago
Avatar for wolf1419

Hello, I'm a DIY guy that gets things fixed if I have some guidance. A used Yamaha AW1600 Digital Multitrack that I own , has a...

replies: 7 views: 454
Avatar for wolf1419
wolf1419 2 days ago
Avatar for tasoshobby

Greetings people! Im posting about a pair of ESI Near05 classic, which need a new tweeter speaker as i have done the one! I...

replies: 1 views: 319
Avatar for tasoshobby
tasoshobby 2 days ago
Avatar for Blissy

My SPX 90 is really noisy. i believe it is the power supply. It gets very hot, I think its on it's way out. was thinking of...

replies: 9 views: 1,058
Avatar for soulguitar
soulguitar 2 days ago
Avatar for Systolic

I was given a SPX90II. It powers on, the menus work, it sees the input signal, but no sound is output on either channel. Is...

replies: 53 views: 17,740
Avatar for soulguitar
soulguitar 2 days ago
Avatar for crzmky

So the tiny fuse in the Phantom power circuit has blown at some point on the 8304 here at the studio I work at. Was wondering if...

replies: 2 views: 241
Avatar for crzmky
crzmky 3 days ago
Avatar for ArKay99

I bought an AVID Artist Mix a few months back and it's been working great. Today during a session without touching it I hear a...

replies: 17 views: 4,951
Avatar for Legali
Legali 3 days ago
Avatar for mr. harrison

hi there, me and my tech are about to give up on this tuning problem my P5 has. only voices 4 and 5 of osc b are not tuning...

mr. harrison
replies: 0 views: 247
Avatar for mr. harrison
mr. harrison 3 days ago
Avatar for Martel80

Hello, I'm looking for the Schematic for the Series 800. If anyne got them, I would really appreciate if they could...

replies: 3 views: 635
Avatar for Martel80
Martel80 3 days ago
Avatar for steefaan

Hi People, i have a little Problem with my Ensoniq ESQ-1. The Filter Cutoff don't open right. The sounds missing...

replies: 3 views: 531
Avatar for Man-Machine
Man-Machine 3 days ago
Avatar for Princeton.Verb

Lately I've noticed that I have to use quite a lot of gain on my mic pres to get a good level out of my Phanthera V. I decided...

replies: 10 views: 1,055
Avatar for Princeton.Verb
Princeton.Verb 4 days ago
Avatar for noah330

Hi, I am currently working on building myself an 8 channel summing mixer from the NY Dave schematic that has been floating...

replies: 15 views: 590
Avatar for forestcreature
forestcreature 4 days ago
Avatar for Riinehart

Hi all, I'm trying to bring a Crumar Performer back to life. It looks like a previous owner made some sort of modification to...

replies: 2 views: 706
Avatar for analog greg
analog greg 4 days ago
Avatar for DanFor

Does somebody has a copy of any firmware version for Yamaha KX88/76 master keyboard? I just bought KX76 with some issues and...

replies: 3 views: 533
Avatar for DanFor
DanFor 4 days ago
Avatar for RichRadio

hey guys This is my first post here so apologies if I'm not in the right place! I have been playing around with a...

replies: 0 views: 236
Avatar for RichRadio
RichRadio 4 days ago
Avatar for Chagalj

There has been alot of talk about importance of conversion in recording chain, and lots of people want to know which AD/DA chip...

replies: 379 views: 245,323
Avatar for onlyme
onlyme 4 days ago
Avatar for Rockman Rock

Hello, I think I might need a new drive for my e4xt every time I try to save anything it won't work and every time I try to flash...

Rockman Rock
replies: 1 views: 299
Avatar for dfchandler
dfchandler 4 days ago
Avatar for tubeing

Hi all, I was using my Apogee to calibrate another piece of gear and I realized that the balanced line outs are...not very well...

replies: 7 views: 316
Avatar for tubeing
tubeing 4 days ago
Avatar for BradM

I just scored an Otari MX55 in good condition with MRL tape, 8 reels of unopened tape and a HandiMag for $200 this morning. I'm...

replies: 17 views: 5,638
Avatar for feadan
feadan 5 days ago
Avatar for Sadomiso

Hi, Any recommendations for old gear repair/servicing (Urei 1176, Dynachord delay, Api EQs....)? Not John Klett whom I already...

replies: 4 views: 405
Avatar for RKelly
RKelly 5 days ago
Avatar for sameal

I've seen this done before, but im curious if theres an exact science, has to be, about placement of the preview head on an...

replies: 30 views: 918
Avatar for Ingenia
Ingenia 5 days ago
Avatar for belzrebuth

I got a nova modded SH-101 having the following issue: The LFO is always routed to the filter except if I plug a jack cable on...

replies: 1 views: 321
Avatar for belzrebuth
belzrebuth 5 days ago
Avatar for hemi666

Hi all, I have an Akai VX-90 which has been acting a bit funny, not tuning, voices not behaving as expected. I have a couple of...

replies: 3 views: 492
Avatar for hemi666
hemi666 5 days ago
Avatar for ejt

Howdy all. I use a Digitech s100 for effects on my bass rig, with a Digitech FS-300 midi pedal to control it. The FS-300 has...

replies: 1 views: 329
Avatar for ejt
ejt 5 days ago
Avatar for Gimlay

Hey Sluts Im recapping a soundcraft delta for a summing mixer and i had a few questions. Im assuming on using Panasonic FM 220...

replies: 8 views: 2,742
Avatar for hellofishy
hellofishy 6 days ago
Avatar for Praxisaxis

Hey All, My (usually) 100% reliable Moog Voyager has been intermittently shutting down after powering up. It's not a clean...

replies: 16 views: 749
Avatar for WorldPowerLabs
WorldPowerLabs 6 days ago
Avatar for PatPend

Anyone know where to get Petrick panel buttons used in late-model OB-8's? These have the "diagonal" contact...

replies: 3 views: 488
Avatar for PatPend
PatPend 6 days ago
Avatar for David Kulka

A friend tells me that people are starting to use standard CAT-5 data cable for balanced analog and digital audio wiring, with...

David Kulka
replies: 85 views: 20,464
Avatar for ponzi
ponzi 1 week ago
Avatar for danmaxson

Hi, I’m new to recording analog so my terminology might be a little off. The issue I am having is that when I record a second...

replies: 4 views: 307
Avatar for danmaxson
danmaxson 1 week ago
Avatar for erict35

Whatever the I/O module I try to send to group 7 or 8 I had no signal at the ouput (master). I inject a tone generator on a...

replies: 6 views: 602
Avatar for Vitalis
Vitalis 1 week ago
Avatar for oldgearguy

OK, so I'm doing some basic cleanup and calibration on some old gear (Oberheim SEMs, circa 1977). Basic sound is great, however...

replies: 2 views: 314
Avatar for oldgearguy
oldgearguy 1 week ago
Avatar for Boonj

Hi Slutz. This might be a dead end but I think it's worth asking. I've been wondering for a few years now about how to control...

replies: 8 views: 437
Avatar for wavenurse
wavenurse 1 week ago
Avatar for willi1203

Hi My Presonus firestudio project show me a problem. Loud noise on main right out. No matter i turn down or up the volume, the...

replies: 1 views: 273
Avatar for Nyquist
Nyquist 1 week ago
Avatar for blueflag

I have 4 7602 pre's that have been in storage. 3 out of 4 now have bad gain switches and one eq switch as well. Are these...

replies: 4 views: 516
Avatar for Radardoug
Radardoug 1 week ago
Avatar for hanselblat

Hi ladies and gents (I assume mostly gents :-})! I have an utter newbie question; if you are so kind as to answer my question,...

replies: 7 views: 351
Avatar for hanselblat
hanselblat 1 week ago
Avatar for Porkbellies

Hi....can anyone help? In my 7602 a wire has become disconnected and I cant seem to see where it goes back although I think it...

replies: 0 views: 298
Avatar for Porkbellies
Porkbellies 1 week ago
Avatar for Emanuel23

Does anyone know the part type / model number of the indented rotary encoder used in the Bose T1 mixer for selecting the various...

replies: 0 views: 320
Avatar for Emanuel23
Emanuel23 1 week ago


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