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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: 67 views: 84,669
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deadicated 3 weeks 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: 1,078 views: 461,490
Avatar for fazeka
fazeka 16th October 2018
Avatar for gabriel1

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

replies: 16 views: 40,615
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: 29,435
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for Ground Zero

Hi, Can anyone help with a schematic for a Carillon M164x schematic Ive had zero luck anywhere

Ground Zero
replies: 0 views: 35
Avatar for Ground Zero
Ground Zero 1 hour ago
Avatar for Sophie89

Hello everyone, I have a SOUNDCRAFT SPIRIT-M8 mixer and it does not work anymore. Normally the mixer is always on. This morning...

replies: 0 views: 68
Avatar for Sophie89
Sophie89 4 hours ago
Avatar for CathodeRay

My Juno 60 is experiencing a voice problem , every sixth note hit is weaker sounding than the rest and the voice continues to...

replies: 3 views: 323
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zamproject 9 hours ago

Hello everyone, I have to clean some scratchy pots of my mixer. I read on this forum that tech pros do not recommend using...

replies: 5 views: 133
Avatar for tmarra
tmarra 10 hours ago
Avatar for pief

This thing feel into my lap. I can.t see any type of brand indication. Pt says CFC Chicago transformer Tubes are Rca,...

replies: 0 views: 90
Avatar for pief
pief 10 hours ago
Avatar for rlnyc

for distances of 6 - 10 feet, does it make a difference between using AES/EBU or Co-Axial cables for transfering digital...

replies: 14 views: 2,415
Avatar for Jim Williams
Jim Williams 12 hours ago
Avatar for forestcreature

On a 4-leg metal cased transistor, what do you do with the case connection? Snip it off? Ground it?

replies: 12 views: 257
Avatar for forestcreature
forestcreature 14 hours 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: 40 views: 1,134
Avatar for DrAudiospecific
DrAudiospecific 15 hours ago
Avatar for LadislavK

Hi, my Soundcraft Series Two has developed interesting problem on a 8 channels, pressing mute button on even input channel...

replies: 0 views: 90
Avatar for LadislavK
LadislavK 18 hours ago
Avatar for filmcomposer

I've a matched pair of Oktava MK-102 s with different capsules. They were working fine and well-looked after. Recently, one...

replies: 5 views: 554
Avatar for filmcomposer
filmcomposer 20 hours ago
Avatar for jimkarl

One channel went out, followed closely by the second channel. I suspect the power supply board has failed but I have no...

replies: 0 views: 93
Avatar for jimkarl
jimkarl 1 day ago
Avatar for JamieOxford

Just thought I'd post a link to this as I've seen a lot of people are after a...

replies: 6 views: 715
Avatar for sandytab
sandytab 1 day ago
Avatar for andow

To all the vintage microphone heads: I recently acquired a Grundig GDSM 200 and unfortunately one microphone doesn't work at all...

replies: 5 views: 953
Avatar for Paultjuh
Paultjuh 1 day ago
Avatar for Coreytravis

So I have a Fender Baja tele that I am putting a Hot rail in the bridge and a rsv vintage rail in the neck. The guitar...

replies: 1 views: 190
Avatar for forestcreature
forestcreature 1 day ago
Avatar for endorka

Hello folks, I recently bought a used Presonus Faderport (single fader version) from Ebay without the proper PSU. Works great...

replies: 11 views: 1,748
Avatar for Kevingrant16
Kevingrant16 1 day 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: 23 views: 733
Avatar for elgordito
elgordito 2 days ago
Avatar for vincentw96

Hi guys, My name is Vincent and i'm currently working on my own midi keyboard with 3 dimensional keys, Moving from front to...

replies: 3 views: 338
Avatar for marinedalek
marinedalek 2 days ago
Avatar for lostintech

Looking around, there seems to be a lot of talk about people replacing the molex connectors or headers on MCI machines, but very...

replies: 4 views: 211
Avatar for lostintech
lostintech 2 days ago
Avatar for JJSound21

Hey guys, I just got a used Alta Moda Hippo compressor off of Reverb for a pretty good deal. Apart from some cosmetic issues,...

replies: 0 views: 132
Avatar for JJSound21
JJSound21 2 days ago
Avatar for marinbnm

Hello! Recently i have LINN9000 for service, will post some pictures later one, but classic, ram battery leak out, and did...

replies: 2 views: 440
Avatar for dfchandler
dfchandler 3 days ago
Avatar for Radardoug

Hi All, A while ago the back light on a friends 02R died. Looking around, it appears Yamaha have given up supplying...

replies: 1 views: 149
Avatar for dfchandler
dfchandler 3 days ago
Avatar for tobi-mobile

Hello folks, I've been searching for ages and can't find the information I'm looking for to build this: A passive attenuator...

replies: 33 views: 1,008
Avatar for kirkus
kirkus 3 days ago
Avatar for tronnyjenkins

Later model U87AI. Recently it has just sounded off. I've had to EQ the high mids in a way that doesn't make a ton of sense. Now...

replies: 1 views: 332
Avatar for DrAudiospecific
DrAudiospecific 4 days ago
Avatar for Brian M. Boykin

Just making sure I’m doing this correct. I’ve done this on several of my DBX compressors with success. Pin 4 is null so I’m...

Brian M. Boykin
replies: 2 views: 271
Avatar for Brian M. Boykin
Brian M. Boykin 5 days ago
Avatar for forestcreature

I have a simple JFET buffer that sounded reasonable when I breadboarded it, but the simulation suggests some questions. I would...

replies: 11 views: 455
Avatar for forestcreature
forestcreature 5 days ago
Avatar for mayortom

Yes it is. My Antelope Orion 32 seems to have unbalanced outputs in the D-SUB25 connector. I tested last night. If you check in...

replies: 47 views: 7,326
Avatar for DrAudiospecific
DrAudiospecific 5 days ago
Avatar for Kiljoy

Hi guys, for the past 2 years my Apogee Rosetta 200 has had problems firing up at the start of the day. Everything looks fine...

replies: 4 views: 1,354
Avatar for ginetto61
ginetto61 5 days ago
Avatar for kinjack

I need some mixing console help from you lovely folks. I've recently acquired a Soundcraft 600 series.. great! Excluding a few...

replies: 14 views: 1,036
Avatar for crosscutred
crosscutred 5 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: 18 views: 5,800
Avatar for Deviated
Deviated 6 days ago
Avatar for Teej

I don't have much experience with tape machines. My friend's 414 mkii has started? to act up a bit. (Question mark because it's...

replies: 8 views: 315
Avatar for Teej
Teej 6 days ago
Avatar for Basite

Hi all, Yesterday evening/night my trusty Digi002R died on me, which came at a very bad time as I had recordings today...

replies: 28 views: 5,541
Avatar for joeldavidlauver
joeldavidlauver 6 days ago
Avatar for Gonecat

Hi All, I've been building some bandpass filters and am using the following method to check out their true frequency range in...

replies: 10 views: 680
Avatar for chris661
chris661 6 days ago
Avatar for eljacko876

Firstly: I am aware of these other solutions for Drum Pads: 1. Individual FSR's 2. This combo: Pads & Sensors 3....

replies: 0 views: 241
Avatar for eljacko876
eljacko876 1 week ago
Avatar for BIG BUDDHA

hello friends. i have a 36 channel DDA AMR24 analog console. lately a couple of channels have been giving issues with regard...

replies: 4 views: 508
Avatar for tmarra
tmarra 1 week ago
Avatar for cat alley

Hello, Connectors are provided on the input PCB of the Soundcraft Series 5 for wiring input transformers to the Hi-Z and XLR...

cat alley
replies: 11 views: 995
Avatar for Jim Williams
Jim Williams 1 week ago
Avatar for factotum

Greetings all. I'm trying to get a Mackie CFX16 (Mk I) back in to service after a few faders got snapped (I suspect it got...

replies: 1 views: 1,729
Avatar for PompeyChris
PompeyChris 1 week ago
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hello, i couple months ago i purchased a used audient 08 preamp. It was working fine until a week or so ago it wouldn't turn on....
replies: 2 views: 264
Avatar for Radardoug
Radardoug 1 week ago
Avatar for floeff

Hi there, I couldn't find a fitting section for this so I just decided to post it here. So, I found this keyboard from the 80s...

replies: 11 views: 5,203
Avatar for bubblebash
bubblebash 1 week ago
Avatar for The Recordingist

So I have recently purchased this old Teac Model5 8 channel mixing desk for doing some 8 track tape recording and it sounds...

The Recordingist
replies: 3 views: 289
Avatar for The Recordingist
The Recordingist 1 week ago
Avatar for hasbeen

I have a 1567a that's a bit noisy. This is my fourth one and the 1st that has ever given me trouble. The others have performed...

replies: 5 views: 2,548
Avatar for mjpendrick
mjpendrick 1 week ago
Avatar for cowudders

Hi, does anybody know a substitute for the missing knob cap on my 91? Please see attached pic, Lexicon doesn't stock it anymore,...

replies: 2 views: 274
Avatar for cowudders
cowudders 1 week ago
Avatar for gorka

Hello, I´m no technician and I don´t want to judge the quality of designs around the opa275. I´m just asking because I...

replies: 0 views: 19
Avatar for gorka
gorka 1 week ago
Avatar for slimjim5792

Hey all, I don't have any modding experience, so please excuse my ignorance. I've got an ART Pro MPA II Reference Series (the...

replies: 13 views: 2,291
Avatar for TimRideout
TimRideout 1 week ago
Avatar for Egg_Fried_Rice

I was using the Bluebird over the last week and it seems after 10 minutes or so, there is a rumble and then the output of the mic...

replies: 3 views: 271
Avatar for DrAudiospecific
DrAudiospecific 1 week ago
Avatar for Coxys

After two failed attempts at buying a replacement headphone cable from two different manufacturers and having two experiences of...

replies: 6 views: 322
Avatar for DrAudiospecific
DrAudiospecific 1 week ago
Avatar for Simon Xang

Hi guys, I am running a Behringer P16-I in control room to a P16-M in my booth and wondering about the cat 5 cabling. If I run...

Simon Xang
replies: 2 views: 271
Avatar for DrAudiospecific
DrAudiospecific 1 week ago
Avatar for krabbencutter

Hey Folks, I started a little hardware project and now that most of it is working, I'm confident enough to share it outside of...

replies: 29 views: 1,284
Avatar for marinedalek
marinedalek 1 week ago
Avatar for darkscorch

Hello, I picked up an MG-1 with a few issues a few months ago for a great price. I've found the service manual online, but...

replies: 2 views: 513
Avatar for darkscorch
darkscorch 1 week ago
Avatar for filmcomposer

Everywhere one reads, it’s emphasized that only ‘Hammond tonewheel generator oil’ must be used to oil a Hammond...

replies: 4 views: 568
Avatar for DrAudiospecific
DrAudiospecific 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: 6 views: 647
Avatar for filmcomposer
filmcomposer 1 week ago


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