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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: 82,086
Avatar for Philbo King
Philbo King 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: 1,071 views: 449,577
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: 39,295
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: 28,234
Avatar for Aniol1349
Aniol1349 10th June 2017
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: 351
Avatar for electricsound
electricsound 5 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: 0 views: 95
Avatar for The Untuned
The Untuned 8 hours 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: 265
Avatar for Pinebox Studio Services
Pinebox Studio Services 16 hours 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: 432
Avatar for wolf1419
wolf1419 16 hours 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: 298
Avatar for tasoshobby
tasoshobby 18 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: 18 views: 1,507
Avatar for Sonate
Sonate 20 hours 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: 1,038
Avatar for soulguitar
soulguitar 23 hours 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: 17,722
Avatar for soulguitar
soulguitar 23 hours ago
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: 7 views: 464
Avatar for ruffrecords
ruffrecords 1 day 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: 221
Avatar for crzmky
crzmky 1 day 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: 4,934
Avatar for Legali
Legali 2 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: 232
Avatar for mr. harrison
mr. harrison 2 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: 624
Avatar for Martel80
Martel80 2 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: 520
Avatar for Man-Machine
Man-Machine 2 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: 1,045
Avatar for Princeton.Verb
Princeton.Verb 2 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: 572
Avatar for forestcreature
forestcreature 2 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: 694
Avatar for analog greg
analog greg 3 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: 520
Avatar for DanFor
DanFor 3 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: 222
Avatar for RichRadio
RichRadio 3 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: 245,133
Avatar for onlyme
onlyme 3 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: 278
Avatar for dfchandler
dfchandler 3 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: 302
Avatar for tubeing
tubeing 3 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: 5,629
Avatar for feadan
feadan 3 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: 386
Avatar for RKelly
RKelly 3 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: 908
Avatar for Ingenia
Ingenia 4 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: 308
Avatar for belzrebuth
belzrebuth 4 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: 480
Avatar for hemi666
hemi666 4 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: 317
Avatar for ejt
ejt 4 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: 2,732
Avatar for hellofishy
hellofishy 4 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: 741
Avatar for WorldPowerLabs
WorldPowerLabs 4 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: 479
Avatar for PatPend
PatPend 4 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: 20,429
Avatar for ponzi
ponzi 5 days 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: 297
Avatar for danmaxson
danmaxson 5 days 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: 594
Avatar for Vitalis
Vitalis 5 days 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: 303
Avatar for oldgearguy
oldgearguy 6 days 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: 419
Avatar for wavenurse
wavenurse 6 days 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: 260
Avatar for Nyquist
Nyquist 6 days 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: 508
Avatar for Radardoug
Radardoug 6 days 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: 336
Avatar for hanselblat
hanselblat 6 days 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: 284
Avatar for Porkbellies
Porkbellies 6 days 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: 308
Avatar for Emanuel23
Emanuel23 1 week ago
Avatar for filmcomposer

Hello Everyone, Am looking to replace rusty 1/4 inch jack nuts and washers from about 40 x female jack sockets on the front of a...

replies: 5 views: 465
Avatar for Richard Crowley
Richard Crowley 1 week ago
Avatar for thermal

I've just acquired an original midiverb, which sounds lovely. The PSU however does not, it hums loudly and is very annoying. I...

replies: 0 views: 277
Avatar for thermal
thermal 1 week ago
Avatar for JamieOxford

Has anyone here built a 610 preamp before? Or is there a company in the deepest darkest corner of the internet making them? I...

replies: 31 views: 13,451
Avatar for Avongugg
Avongugg 1 week ago
Avatar for Mr XY

does anyone know of a US vendor that sells a suitable 2u rack mount chassis for a class d amp build (anaview) that can pre drill...

replies: 0 views: 291
Avatar for Mr XY
Mr XY 1 week ago
Avatar for TMOQuantity

Sorry if this is the wrong forum for this question, I wasn't sure where to put it. I picked up a couple of NOS BASF LGR-50...

replies: 6 views: 388
Avatar for TMOQuantity
TMOQuantity 1 week ago
Avatar for Spano

So I decided to torture myself and check out some SSL studio equipment, (ho LEE **** it's expensive but it's awesome. I would...

replies: 6 views: 514
Avatar for ruffrecords
ruffrecords 1 week ago
Avatar for gradivus

Curious what you seasoned guys do to safely discharge capacitors and if you use one method or several depending on the size and...

replies: 70 views: 1,544
Avatar for Richard Crowley
Richard Crowley 1 week ago
Avatar for Hollowman9

I have begun making modifications to an old Univox Maxi-Korg synthesizer. When I bought the unit it was partially functioning...

replies: 31 views: 1,155
Avatar for Hollowman9
Hollowman9 1 week ago
Avatar for piscine

Hi all, FWIW, I am proudly announcing the availability of the complete Tascam ATR-60-16's Operation and Maintenance Manual in...

replies: 6 views: 1,489
Avatar for EvilRoy
EvilRoy 1 week ago


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