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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: 83,165
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: 454,011
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: 39,890
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: 28,766
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for Mylithra

I was asked to look at an old Trace Elliot Bonneville that went boom a long time ago. I found what went boom. It was a connector...

replies: 0 views: 41
Avatar for Mylithra
Mylithra 1 hour ago
Avatar for sameal

I got another puzzle. Q3 is missing from this little "mike" pre, and the schematic eludes me as well. MI38183 These...

replies: 0 views: 47
Avatar for sameal
sameal 3 hours ago
Avatar for mutetourettes

hello - does anyone know whether cassette 4-track heads are still manufactured anywhere (ie proper 4-track head with shielding...

replies: 4 views: 192
Avatar for analogguru
analogguru 6 hours ago
Avatar for TL Music

Hello, this is my first post here on Gearslutz. Please excuse me if it's in the wrong category. The thread is regarding the 1980s...

TL Music
replies: 6 views: 620
Avatar for TL Music
TL Music 8 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: 16 views: 404
Avatar for mbrebes
mbrebes 9 hours ago
Avatar for boomer81

jbl lsr4328p dust cap replacement info. what material, size and glue would you use. on the 8 inch woofer would you use 3 inch...

replies: 1 views: 349
Avatar for danyull
danyull 10 hours ago
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: 8 views: 263
Avatar for pief
pief 10 hours 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: 30 views: 975
Avatar for zvukofor
zvukofor 15 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: 1 views: 222
Avatar for Zeppelin
Zeppelin 15 hours 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: 29 views: 796
Avatar for MattS13
MattS13 20 hours ago
Avatar for noah330

Hey Everyone, i have two questions. I bought a DDA Arena series console for $135 and it is working great and sounds cool. All of...

replies: 0 views: 188
Avatar for noah330
noah330 1 day 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: 368
Avatar for Radardoug
Radardoug 1 day 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: 233
Avatar for ripple_fx1
ripple_fx1 1 day 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: 2,285
Avatar for KDus
KDus 1 day 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 eight...

White Falcon
replies: 0 views: 237
Avatar for White Falcon
White Falcon 1 day 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: 274
Avatar for DrewE
DrewE 2 days 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: 460
Avatar for BFrederick
BFrederick 2 days 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: 205
Avatar for Brian M. Boykin
Brian M. Boykin 2 days 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: 375
Avatar for Brian M. Boykin
Brian M. Boykin 2 days 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: 255
Avatar for szegedin
szegedin 2 days 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: 1,534
Avatar for lucasasdelli
lucasasdelli 2 days 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: 544
Avatar for Brian M. Boykin
Brian M. Boykin 2 days 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: 185
Avatar for Rocco NB
Rocco NB 2 days 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: 1,001
Avatar for Brian M. Boykin
Brian M. Boykin 2 days 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: 251
Avatar for dude24man
dude24man 2 days 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: 575
Avatar for jaddie
jaddie 2 days 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: 227
Avatar for Rufuss Sewell
Rufuss Sewell 3 days 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: 1,493
Avatar for Brian M. Boykin
Brian M. Boykin 3 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: 945
Avatar for sleat
sleat 3 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: 477
Avatar for monomer
monomer 3 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: 259
Avatar for Radardoug
Radardoug 4 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: 260
Avatar for TSM
TSM 4 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: 365
Avatar for Jim Williams
Jim Williams 4 days ago
replies: 23 views: 805
Avatar for kirkus
kirkus 4 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: 598
Avatar for MikeyMoo
MikeyMoo 4 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: 1,944
Avatar for Jumpy
Jumpy 5 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: 236
Avatar for hebjam
hebjam 5 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: 225
Avatar for hebjam
hebjam 5 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: 379
Avatar for Mr. Bars
Mr. Bars 6 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: 2,431
Avatar for T-Stag
T-Stag 6 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: 553
Avatar for Richard Crowley
Richard Crowley 6 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: 537
Avatar for norfolk martin
norfolk martin 6 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: 304
Avatar for Moulin
Moulin 6 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: 303
Avatar for monomer
monomer 6 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: 1,969
Avatar for jaddie
jaddie 6 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: 281
Avatar for Zlive
Zlive 1 week 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: 470
Avatar for wrgkmc
wrgkmc 1 week 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: 1,411
Avatar for Yug
Yug 1 week 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: 327
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: 1,990
Avatar for nosebleedaudio
nosebleedaudio 1 week ago


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