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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: 83,137
Avatar for Philbo King
Philbo King 11th August 2018
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: 453,753
Avatar for gyraf
gyraf 3rd August 2018
Avatar for gabriel1

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

replies: 16 views: 39,873
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: 28,751
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for sameal

Been searching high and low for this one. Im missing a cap can and got some chopped wires around the can and one oc3 tube socket...

replies: 5 views: 160
Avatar for DrAudiospecific
DrAudiospecific 43 minutes ago
Avatar for David Eugene

Hey y'all, I've got a question about proper phantom voltage. I think my mixer may be sending too much voltage. I've got an...

David Eugene
replies: 26 views: 730
Avatar for MattS13
MattS13 1 hour ago
Avatar for autodefe

Hi! I bought a second hand G16 Dolby C version, and it had the typical slow rewind problem. So i decided to clean the reel...

replies: 3 views: 346
Avatar for Radardoug
Radardoug 1 hour ago
Avatar for DMFraser

I have a musician who really wants a left handed keyboard. I was contemplating physically rewiring the keys keeping the sharps...

replies: 2 views: 155
Avatar for ripple_fx1
ripple_fx1 4 hours ago
Avatar for lahatte

So I got a dead Yamaha SPX 90, and I also have the schematic. Unfortunately the service manual does not tell me what voltages I...

replies: 56 views: 2,245
Avatar for KDus
KDus 4 hours ago
Avatar for White Falcon

Edit: Fixed, the manufacturer got back to me! So I've got this mixer in for repair. The Hi and Lo-sweep EQ didn't work on...

White Falcon
replies: 0 views: 102
Avatar for White Falcon
White Falcon 5 hours ago
Avatar for BillyP.

I have access to some old studio equipment that I can get to refurbish since it is not, nor has been used for a very long time....

replies: 13 views: 342
Avatar for Jay Rose
Jay Rose 8 hours ago
Avatar for General Malaise

Hello everybody. I have an A800 MKII permanently stuck in Mute problem. The mute light is permanently on and the mute switch...

General Malaise
replies: 0 views: 120
Avatar for General Malaise
General Malaise 10 hours ago
Avatar for Riinehart

Hi all -- I'm fixing up an old Paia Gnome, which runs on 18v from two 9v batteries in series. While I have it open I think...

replies: 3 views: 193
Avatar for DrewE
DrewE 19 hours ago
Avatar for cononojoda

Hi everybody! I am fixing with a technician my beloved Harrison Pro-7 Console. We need the manual with schematics and technical...

replies: 1 views: 448
Avatar for BFrederick
BFrederick 20 hours ago
Avatar for Brian M. Boykin

I swapped out the Harris Quads for LME49740’s and the 5532 for an LME49720. Strapped a .1 ceramic across the power pins because...

Brian M. Boykin
replies: 0 views: 140
Avatar for Brian M. Boykin
Brian M. Boykin 22 hours ago
Avatar for Brian M. Boykin

Doing some mods to my DBX163x’s and the second one has some cooked caps. They look like big ceramics or poly’s but the noob I...

Brian M. Boykin
replies: 10 views: 352
Avatar for Brian M. Boykin
Brian M. Boykin 22 hours ago
Avatar for szegedin

Putting aside for a moment the issue of different threads and whether a capsule can actually be screwed on to a different preamp;...

replies: 2 views: 238
Avatar for szegedin
szegedin 23 hours ago
Avatar for dluther

Patience finally paid off with my standing eBay search for a Roland A-50, right price (~$250, with a pedal, soft case and memory...

replies: 9 views: 1,513
Avatar for lucasasdelli
lucasasdelli 1 day ago
Avatar for wiz1der

Anyone know of an Otari tech in So Cal that will make a housecall? I have an Otari MX80 24 track that I would like to get...

replies: 10 views: 531
Avatar for Brian M. Boykin
Brian M. Boykin 1 day ago
Avatar for Rocco NB

Hi all! Please forgive me and help point me in the right direction if this is the wrong spot to post or if it's been...

Rocco NB
replies: 0 views: 148
Avatar for Rocco NB
Rocco NB 1 day ago
Avatar for VitaEtMusica

Does anyone know if the microphone-parts RK-12 (sold on for $159) and the Rayking RK12 (sold on Alibaba for...

replies: 23 views: 988
Avatar for Brian M. Boykin
Brian M. Boykin 1 day ago
Avatar for dude24man

Looking for 1 or 2 dbx AB-1 balancing boards for the dbx 160x. PM me Thanks Arthur

replies: 3 views: 236
Avatar for dude24man
dude24man 1 day ago
Avatar for Alexander_Music

Hello ! I want to build a pair of very good studio monitors, something like: Barefoot mm 35 Kii Three Dutch & Dutch...

replies: 27 views: 880
Avatar for Jim Williams
Jim Williams 1 day ago
Avatar for Samando

Does anyone know if the danish NTP brand has got any led VU-meters? All I keep finding are real nicelooking PPM meters, like...

replies: 17 views: 557
Avatar for jaddie
jaddie 1 day ago
Avatar for Rufuss Sewell

A couple weeks ago my Nord Lead 3 pitch stick stopped working. I contacted Nord and they sold me a new stick for $105....

Rufuss Sewell
replies: 0 views: 214
Avatar for Rufuss Sewell
Rufuss Sewell 1 day ago
Avatar for MYN

I built the Poctop D87 from VintageMicrophonePCBKit and I think it sounds pretty great. My one criticism is that I'd like it to...

replies: 74 views: 1,468
Avatar for Brian M. Boykin
Brian M. Boykin 2 days ago

Hi everybody! I want to make a speech synthesizer based on patent EP 0396141, it uses the Votrax SC-02 chip (if you know the...

replies: 3 views: 937
Avatar for sleat
sleat 2 days ago
Avatar for szegedin

.. and if so, what is it? I'm pretty sure there is no answer for this, but I thought I would punt it out there. I hear about...

replies: 24 views: 466
Avatar for monomer
monomer 2 days ago
Avatar for nucelar

I have an U87Ai which must be around 10-12 years old, using it almost around-the-clock for voiceovers . It works just fine but i...

replies: 1 views: 247
Avatar for Radardoug
Radardoug 2 days ago
Avatar for Machine Gene

Greetings forum. Please forgive me if this is the wrong area to post this question. I've been reading GS for years but I barely...

Machine Gene
replies: 1 views: 250
Avatar for TSM
TSM 3 days ago
Avatar for analogTinkerer

Hey all, I was recording some bass on my Otari mx5050 1/2" 8 track machine when I noticed a strange ugly sounding...

replies: 10 views: 354
Avatar for Jim Williams
Jim Williams 3 days ago
replies: 23 views: 790
Avatar for kirkus
kirkus 3 days ago
Avatar for filmcomposer

One of the peak level (VU) meters in my Focusrite ISA 428 has stopped moving. The needle won’t jump when a signal is fed...

replies: 3 views: 589
Avatar for MikeyMoo
MikeyMoo 3 days ago
Avatar for afonso

Hello forum! I have recently acquired a Studer 962 (i have been looking for one for the past 8 years). It was in an old...

replies: 4 views: 1,933
Avatar for Jumpy
Jumpy 4 days ago
Avatar for hebjam

I have a 4 channel Reliqua based 312 clone. It has an external power supply. Because only two channels work well i was...

replies: 1 views: 224
Avatar for hebjam
hebjam 4 days ago
Avatar for hebjam

I have a 4 channel Reliqua based 312 clone. It has an external power supply. Because only two channels work well i was...

replies: 0 views: 215
Avatar for hebjam
hebjam 4 days ago
Avatar for Mr. Bars

Hello friends, I have a lot of various high-end analog gear in my studio and in most of its manuals in adjustment and...

Mr. Bars
replies: 6 views: 369
Avatar for Mr. Bars
Mr. Bars 5 days ago
Avatar for macmini

I'm using a Groove Tubes CL1s Compressor/Limiter in studio and I want to calibrate the tubes of the CL1s ... so I need the right...

replies: 10 views: 2,424
Avatar for T-Stag
T-Stag 5 days ago
Avatar for Teej

I need to get a couple IM07TS relays for a project and mouser is out of stock. I'm totally green to sourcing parts for a build...

replies: 8 views: 540
Avatar for Richard Crowley
Richard Crowley 5 days ago
Avatar for Patrick H

Hi all. Im having an ongoing issue with noise. This noise happens randomly and occurs for 5-10 seconds at a time - 2-10 times a...

Patrick H
replies: 27 views: 525
Avatar for norfolk martin
norfolk martin 5 days ago
Avatar for Moulin

Hi dear community. Sorry to bring up an old topic but this one has not been solved yet: My Holy Grail Reissue broke. It looks...

replies: 2 views: 293
Avatar for Moulin
Moulin 5 days ago
Avatar for grs

When I turn on my Roland SH-101 the Key Transpose LED flashes quickly then the Hold LED/function comes on and will not turn off....

replies: 1 views: 289
Avatar for monomer
monomer 5 days ago
Avatar for daniel.mixer

Hey guys, Just picked up a Sony AC-148A phantom power supply off eBay, and I'm having some over-voltage issues. Measuring...

replies: 7 views: 1,961
Avatar for jaddie
jaddie 5 days ago
Avatar for Zlive

I have a tascam dm 3200 a tascam iffdmwk 2 And a motu 2408 and pcie card for it on win 10 64bit. Ineed anyone who can help...

replies: 0 views: 271
Avatar for Zlive
Zlive 5 days ago
Avatar for szegedin

Is that possible, on a 'moddable' mic? There are mics I like, but would trade headroom for sensitivity if that was feasible,...

replies: 5 views: 460
Avatar for wrgkmc
wrgkmc 6 days ago
Avatar for SpaceShipStudio

Greetings Collective Powers of Knowledge, I am trying to save this ole guy from the trash bin, If anybody has any leads on the...

replies: 3 views: 1,404
Avatar for Yug
Yug 6 days ago
Avatar for SoothsayerRec

First of all, sorry for the inconvenience, I have nowhere else to go and I'm pretty confused. I have a Warm Audio Wa-12 mic...

replies: 5 views: 313
Avatar for SoothsayerRec
SoothsayerRec 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: 73 views: 1,977
Avatar for nosebleedaudio
nosebleedaudio 1 week ago
Avatar for elgordito

Hi everyone, I want to switch between two sources to my balanced monitors (L/R). My two sources are also balanced, my...

replies: 15 views: 385
Avatar for Matt Syson
Matt Syson 1 week ago
Avatar for Brian M. Boykin

I’m trying to ballpark how many amps a new power supply needs to be for my console after all the new opamps are in. So for an...

Brian M. Boykin
replies: 5 views: 343
Avatar for Cozmik Prod.
Cozmik Prod. 1 week ago
Avatar for slutter

Hi All, I've inherited an old school Yamaha EM-200 with a pair of S0140H cabinets. Looks SUPER cool. I've reached out to...

replies: 1 views: 270
Avatar for slutter
slutter 1 week 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: 3 views: 285
Avatar for thermal
thermal 1 week ago
Avatar for Papabear

hello i recently bought a jx305 really cheap and im in the process of repairing it now. the problem is that some of the push...

replies: 5 views: 1,298
Avatar for Mandala69
Mandala69 1 week ago
Avatar for dfchandler

Anyone know what brand of fuse holder are used in the Scamp Power Supply? I need one. Thanks. Denny

replies: 4 views: 345
Avatar for dfchandler
dfchandler 1 week ago


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