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I have been collecting schematics for 30 years and 5 years ago I started make them available at my site but...

replies: 82 views: 115,082
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MicroSonic 2 weeks ago
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OK, something to spice up Geekslutz = here is where we post images of the INSIDE of audio equipment. Disclaimer; any photo...

Tim Farrant
replies: 1,141 views: 538,166
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msbettyhunt 16th June 2020
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DSP Innovations has recently launched a FREE data sheet search site. The site, - Search Electronic Components ,...

replies: 19 views: 53,756
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msbettyhunt 27th March 2020
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Anyone who offers technical services should get themselves listed into the new member directory here... Gearslutz Directory:...

Tim Farrant
replies: 9 views: 42,848
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msbettyhunt 24th March 2020
Avatar for DavidLMills

Hi there, I had a quick question about VU Meters and wiring. I know there have been a few posts about this but couldn't find a...

replies: 20 views: 4,391
Avatar for Matt Syson
Matt Syson 1 hour ago
Avatar for daveybasso

good lord ive never heard such a close, intimate vocal in my LIFE? close did they have the mic to her? was it down her...

replies: 7 views: 261
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cyjanopan 1 hour ago
Avatar for craigmorris74

I have an unbalanced piece of hi-fi gear that I would like to use in the studio. Could I add transformer inputs and outputs to...

replies: 28 views: 635
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nosebleedaudio 1 hour 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: 491 views: 332,667
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ardis 9 hours ago
Avatar for shadebug

Preamble Hey, first time posting so let me know if I'm in the wrong place but I recently bought a D310 off reverb. It was the...

replies: 2 views: 108
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Dr. Jule 14 hours ago
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Hi all I'm a long time reader of this forum, and a newly registered member, from Paris, France. I bought a Yamaha SPX90...

replies: 177 views: 21,954
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ghostwriter 14 hours ago
Avatar for emm853

Hi Everyone, i'm having big issues with my rocktron Patchmate (the Bob Bradshaw version). The machine starts up and the...

replies: 42 views: 1,084
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emm853 15 hours ago
Avatar for mortimersnerdy

So, I have an original power supply that has a non original input connector, need the original connector to match up with new...

replies: 6 views: 121
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jaddie 15 hours ago
Avatar for soundbeing

Hey gang, my tech has localized the issue I have with one channel of my AKG BX20e. It seems to be a common issue in these units....

replies: 0 views: 72
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soundbeing 16 hours ago
Avatar for stevo991

I would like to start a thread for all of you slutz out there that has any info or schematics on AMEKS BIG, Recall, and 501 by...

replies: 38 views: 5,013
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pinkpanter 18 hours ago
Avatar for plazareff

Hello All, After many exchanges with SSL support and before making a warranty claim, I thought it might be useful to share my...

replies: 3 views: 928
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purplenoise 18 hours ago
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I'm working on a project and as many, as example I got the Schoeps CMC3-5 schematics to work with. I'm wondering what are the...

replies: 2 views: 130
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kirkus 18 hours ago
Avatar for gerard68

My first post here, so I don't know if this is the right place to ask, but here it is. As the title says; I got one channel with...

replies: 4 views: 3,474
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copperline 1 day ago
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I have a vintage Otari MX-7800 8 track 1 inch tape machine that I bought 10 years ago, used very little, then moved and just...

replies: 0 views: 81
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diamondjim 1 day ago
Avatar for hotrod79

Hi all, I have a question about a schematic symbol and I am hoping someone could enlighten me about it. The drawing shows digital...

replies: 3 views: 136
Avatar for Rick Dalton
Rick Dalton 1 day ago
Avatar for Ianneve

I just did my first 2. I'm no longer a Calibrating Virgin. I'm running Samplitude and I'm running a sine wav out at -16 and I...

replies: 28 views: 3,689
Avatar for Bob Olhsson
Bob Olhsson 1 day ago
Avatar for WFTETC1

Hello, can someone tell me how's this EQ called and which brand(unit direct under the C1), would be very nice to know, you guys...

replies: 2 views: 540
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Soundclass 1 day ago
Avatar for Saudade

Hi there, I have had this mic for maybe 20 yrs. Recently it started having this noise (click links to hear). There is still...

replies: 3 views: 155
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gyraf 1 day ago
Avatar for mungu

Hi all - I am doing the final setup steps of my Sound Skulptor CP4500 and I am a bit stuck. Full schematic is here:...

replies: 1 views: 120
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mungu 2 days ago
Avatar for polaris26

Hello all - I just acquired a Roland SDE-3000 and hoping someone here can help me with a mystery before I start to try to...

replies: 1 views: 112
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polaris26 2 days ago
Avatar for dreadbizniz

If you require schematics / user manual for the EMT 258 noise filters i am currently racking a pair and have this data document...

replies: 5 views: 2,235
Avatar for LuizCamargo
LuizCamargo 3 days ago
Avatar for hotrod79

Hi all, this is my first thread and I am hoping to find a few who venture as far as I do when it comes to taking care of my gear....

replies: 6 views: 362
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hotrod79 3 days ago
Avatar for hedgehognrown

is a pot is a pot is a pot? for whatever reason, 250k/250k concentric pots seem to be thin on the ground and the only ones...

replies: 6 views: 216
Avatar for Cabirio
Cabirio 3 days ago
Avatar for tcross

Short rant: Bought the Presonus Eris 8 about 5 years ago and several months ago one lost power. Sent to Presonus for repair ($75...

replies: 0 views: 124
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tcross 3 days ago
Avatar for pencilextremist

I was wondering if it's possible to design/make my own dual VU/PPM meter? I know we are living in 2020 but there's just something...

replies: 27 views: 496
Avatar for jaddie
jaddie 3 days ago
Avatar for WhiskyCast

Trying to help a friend of mine resolve a problem with his Senal UB-440 USB condenser mic (since I recommended he buy it for his...

replies: 3 views: 126
Avatar for Thomas W. Bethe
Thomas W. Bethe 3 days ago
Avatar for Chadr

Hello, I need some advice regarding a couple issues I’m having with my console. Console: Soundcraft Sapphyre 36...

replies: 0 views: 136
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Chadr 3 days ago
Avatar for enginefire

Hey I’m tweaking out a urei562. I’m looking at the output section and want to add a pot to control the output drive. Any...

replies: 5 views: 387
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Cabirio 4 days ago
Avatar for weenhillage

A yellow IC in the underside of the User interface Board. Some pins are removed/not connected. Is this somebody’s half assed...

replies: 4 views: 201
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weenhillage 4 days ago
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There is some noise when I press the after touch. I have temporarily remedied it by unscrewing the front panel. I don’t see...

replies: 0 views: 107
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weenhillage 4 days ago
Avatar for woods

Is this typically what a unit this price looks like under the hood?

replies: 55 views: 10,564
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ginetto61 4 days ago
Avatar for Uby62

Hi everyone! I need to repair a Ddrum AT module : the trigger inputs are not working and i have distortion on outputs, and the...

replies: 10 views: 1,347
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Uby62 4 days ago
Avatar for kinjack

Hi all, I've got a Soundcraft Series 600 that I'm slowly recapping rockout Only problem is the gain levels are...

replies: 4 views: 264
Avatar for Philbo King
Philbo King 4 days ago
Avatar for superjimmer

Anyone know how to take apart a UM70 capsule? I just want to get he head basket off and straighten the capsule which is slightly...

replies: 6 views: 1,085
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Swing 4 days ago
Avatar for Chaoschao99

Hello! I have been trying to get this Korg DW-8000 back in business since purchasing it from Ebay for cheap in an attempt to...

replies: 4 views: 1,518
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acreil 5 days ago
Avatar for Brett 123

Hi there, Does anyone know about this? I can find two different versions on the web, not sure which one is correct ?...

Brett 123
replies: 3 views: 1,431
Avatar for cathode
cathode 5 days ago
Avatar for gearstudent

Hello, A lot of large diaphragm condenser mics have two diaphragms in them so you can get different polar patterns. Suppose...

replies: 2 views: 164
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gearstudent 5 days ago
Avatar for okkokkokko

Welcome to exactly what the title of this thread suggests! And let me go straight to the disclaimer for all you millennial-,...

replies: 156 views: 12,992
Avatar for 2Low
2Low 5 days ago
Avatar for sonotor

hello I have a sony mxp 29 mixer and I would like to add a direct out on each channel! Could you help me to pick the signal...

replies: 25 views: 6,651
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romanj 5 days ago
Avatar for mikewolfe

Haven’t seen this problem in the countless SPX90 repair forums so I figured I’d make a new thread in hopes of solving my...

replies: 11 views: 415
Avatar for Rick Dalton
Rick Dalton 6 days ago
Avatar for Canaan

Alright this might be a completely stupid question but I have a Mackie 1220 that has a major power supply issue. The lights...

replies: 27 views: 7,349
Avatar for Richard Crowley
Richard Crowley 6 days ago
Avatar for Hollowman9

So here's another bizarre exercise in mucking with internal operation of an electronic instrument. The Casio CZ-1 has a circuit...

replies: 7 views: 2,197
Avatar for gdspackm
gdspackm 6 days ago
Avatar for Joerawas

Hi all, I have a TL Audio M1 Tubetracker. I have a bunch of defective switches I would like to swap out in the...

replies: 0 views: 141
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Joerawas 6 days ago
Avatar for jimj3114

Hello! What kind of element would be used in a tiny omni built-in talkback microphone or a measurement microphone? I...

replies: 2 views: 178
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jimj3114 1 week ago
Avatar for OzMic

Hey all! I've just picked up a Shure SM58 wireless mic on the cheap for AUD60, listed as "not working". My intention...

replies: 1 views: 163
Avatar for DrewE
DrewE 1 week 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: 4 views: 1,089
Avatar for PatPend
PatPend 1 week ago
Avatar for sameal

Im gonna take a wild guess here and say I should not be reading continuity on all 3 pins of this guy eh?

replies: 10 views: 291
Avatar for enginefire
enginefire 1 week ago
Avatar for invalidusername

Hi I removed the exploded RIFA capacitor from my PS20 yamaha synth PSU, and now i have a very noticeable buzzing/hum sound...

replies: 10 views: 537
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erickgc182 1 week ago
Avatar for raid

I'm getting into synth restoration and also working on a DIY synth replica, but there are some bits and pieces of knowledge about...

replies: 2 views: 193
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vintagelove 1 week ago
Avatar for ginetto61

Hi ! i am posting here but of course please feel free to move this question to a more proper place (hopefully not the garbage...

replies: 11 views: 411
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ginetto61 1 week ago


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