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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: 1,158 views: 549,896
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soundebler 1 week ago
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: 86 views: 118,269
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waveterm 3 weeks ago
Avatar for gabriel1

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

replies: 19 views: 55,330
Avatar for msbettyhunt
msbettyhunt 27th March 2020
Avatar for Tim Farrant

Anyone who offers technical services should get themselves listed into the new member directory here... Gearslutz Directory:...

Tim Farrant
replies: 9 views: 44,380
Avatar for msbettyhunt
msbettyhunt 24th March 2020
Avatar for UncleGroOve

I'm getting my old studio up and running again and fired up my trusty Panasonic WR-DA7 mixing board. I was getting a...

replies: 3 views: 267
Avatar for Analogdays
Analogdays 1 hour ago
Avatar for Mr. Tom

Hi, Have some nice vintage xformers here, And been thinking of building a DI box. Guitar/bass in- XLR + unbal out. Any...

Mr. Tom
replies: 4 views: 200
Avatar for cbc6403
cbc6403 1 hour ago
Avatar for valeot

i have a tl audio indigo 2012, this unit was working perfectly till one months ago, now some of the frequency potentiometers seem...

replies: 2 views: 927
Avatar for ma_headphone
ma_headphone 3 hours ago
Avatar for ma_headphone

Hi. I'd like to add transformer colouring in my processing chain, I've been reading a bit on how it works, but it would be nice...

replies: 10 views: 672
Avatar for rbbrchckn
rbbrchckn 5 hours ago
Avatar for drewharris

I'm looking to build a very simple A/B balanced stereo switcher box. I have 2 preamp channels that I want to be able to quickly,...

replies: 5 views: 244
Avatar for kirkus
kirkus 7 hours ago
Avatar for nucelar

Hi there! Somewhat offtopic but anyway, I'm hoping for some ideas. I have a device that has several capacitive touch...

replies: 7 views: 1,237
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xavi104 9 hours ago
Avatar for Deleted c117a9d

Says it's disabled... anybody know how can I register? I wanted to ask some questions about Hairball's preamp kits over there and...

Deleted c117a9d
replies: 56 views: 4,458
Avatar for gyraf
gyraf 14 hours ago
Avatar for belzrebuth

I got a alesis quadraverb that outputs a very loud hum rendering the unit unusable even though I can hear the effects...

replies: 4 views: 581
Avatar for belzrebuth
belzrebuth 14 hours ago
Avatar for elrobis

Hi gear folks, I bought Rane SP-15 off of Ebay, it arrived today, so I connected it to give it a whirl. After about 10 minutes or...

replies: 0 views: 88
Avatar for elrobis
elrobis 20 hours ago
Avatar for Paul Babiak

It's the 4-channel germanium mixer. It looks like the attached pic. Any leads on a schematic appreciated. Thanks. Paul Babiak

Paul Babiak
replies: 16 views: 5,933
Avatar for Mario del Rio
Mario del Rio 21 hours ago
Avatar for Byron

Hi all, I have an NPNG DMP-2NW that needs a (hopefully minor) repair. The problem is no signal on channel 1. No action on...

replies: 4 views: 1,130
Avatar for Berndalen
Berndalen 22 hours ago
Avatar for bassmuse

Hi all! Today I was messing with my amplification setup and accidentally turned on my Crown xti 4002 without any speakers...

replies: 16 views: 361
Avatar for Rick Dalton
Rick Dalton 1 day ago
Avatar for fvwelsh

I have a Mirage DMS-1 that’s seems to be loading sample data into RAM incorrectly on the lower half of the keyboard. The sound...

replies: 0 views: 80
Avatar for fvwelsh
fvwelsh 1 day ago
Avatar for James Meger

Hi, this is my first real post here and I just wanted to thank everyone for all the incredibly valuable information I’ve soaked...

James Meger
replies: 3 views: 198
Avatar for James Meger
James Meger 1 day ago
Avatar for felixmcore

Hello everyone! I recently changed all the pots in my Revox A77 MK2. Because some of them were broken, I could not measure...

replies: 5 views: 305
Avatar for ruffrecords
ruffrecords 1 day ago
Avatar for Adam12345678

Hi peeps, I'm wanting to get my korg m1 serviced but I'm poor and worried about the cost, does anybody know (roughly) what the...

replies: 2 views: 160
Avatar for Adam12345678
Adam12345678 1 day ago
Avatar for Diana McC

Hi! I have a photo of my grandmother at the start of her radio career, and would love to know what kind of mic she is posing with...

Diana McC
replies: 2 views: 277
Avatar for Diana McC
Diana McC 1 day ago
Avatar for QueenSisi

Hi , Iam making an u48 now I struggled with a resistor of 150megaohm. Look at the pic of scematic u48. How many W should it be.

replies: 4 views: 272
Avatar for QueenSisi
QueenSisi 2 days ago
Avatar for trondl

I've recently gotten the mentioned unit plus a TR-707 and MKS-30 for a laugh. Today I tested it and it made sound for about a...

replies: 11 views: 2,124
Avatar for clausi
clausi 2 days ago
Avatar for ButtonBoy

Hey guys! I’m a student helping to create the Buttons project. With this project, we're creating a service for making custom...

replies: 1 views: 586
Avatar for Avril.Fr
Avril.Fr 2 days ago
Avatar for martinusbaum

hi could not find anywhere a service manual or schematic of studiomaster series 5 mixer. Series 3 did not matter. please help!...

replies: 0 views: 100
Avatar for martinusbaum
martinusbaum 2 days ago
Avatar for codeowl

Hi there, I have been researching Attenuation for guitar amps. I currently have: AMPS: 15 watt Fender Super Champ X2 50...

replies: 1 views: 213
Avatar for Arthur Stone
Arthur Stone 2 days ago
Avatar for rp3703

Is there a way to confirm that a dry guitar or bass signal coming out of the instrument's pickups is the same once that same...

replies: 3 views: 145
Avatar for rp3703
rp3703 2 days ago
Avatar for u929

Hello, I'm looking to buy a UTC HA-100X (vintage), is anyone selling one?

replies: 1 views: 160
Avatar for Thomas W. Bethe
Thomas W. Bethe 2 days ago
Avatar for arch1

Turned on my ghost 32 power supply and it died on me. CPS 275. No power to the board, fan stopped also. The center and right...

replies: 33 views: 2,858
Avatar for Zupe
Zupe 3 days ago
Avatar for dimebucker5

Hi there, trying to determine if my power transformer has failed, very difficult for me to get to a good technician (im in west...

replies: 5 views: 167
Avatar for David Kulka
David Kulka 3 days ago
Avatar for marcus_k

Hi guys - I just moved to a new place (i'm in CA, USA) and all of my guitars and amps are now picking up quite a nasty bit of...

replies: 19 views: 733
Avatar for blueNan
blueNan 3 days ago
Avatar for Studio ManCave

Hey all I'm recapping my Soundcraft 6000 console and thought I'd make an excel file of the caps in each of the units. I don't...

Studio ManCave
replies: 17 views: 6,224
Avatar for Natethekill
Natethekill 3 days ago
Avatar for Boris_partys

It looks like DBX does not have spare part meters of their obsolete DBX 162 SL compressor. What I have found are meters without...

replies: 2 views: 273
Avatar for Boris_partys
Boris_partys 3 days ago
Avatar for golden_ears

After building a Command 8 power supply, I’m going to attempt a power supply for my Rane Hc6 (noted as a RS-2 rather than...

replies: 5 views: 337
Avatar for analogguru
analogguru 3 days ago
Avatar for thomasdf

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: 189 views: 24,826
Avatar for rjb5191
rjb5191 4 days ago
Avatar for Adam12345678

Hi everyone, when ever i use my boss fs7 footswitch with my looper i get this noise as soon as i press a key on piano, it's all...

replies: 0 views: 109
Avatar for Adam12345678
Adam12345678 4 days ago
Avatar for Adam12345678

Hi good people, I'm wanting to use the korg m1 vst with boss rc 505 but cant seem to get the vst to communicate with rc 505, (I...

replies: 0 views: 128
Avatar for Adam12345678
Adam12345678 4 days ago
Avatar for Jobot

I just got a soundtracs FMX off a friend for free. Nice mixer. Running it into dynaudio BM5A.With no inputs plugged into it, all...

replies: 0 views: 111
Avatar for Jobot
Jobot 4 days ago
Avatar for Thomas W. Bethe

Here is the replacement relay for K101 on Tascam Tape Decks 32. 34 and 38. Took a while to find but it works great! The...

Thomas W. Bethe
replies: 0 views: 125
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Thomas W. Bethe 5 days ago
Avatar for Rubbl

I´m planing to build a mutron III clone. Most of the parts are no problem but maybe someone can suggest an opto coupler for the...

replies: 3 views: 315
Avatar for Cylon Centurion
Cylon Centurion 5 days ago
Avatar for Adam12345678

Hi there, does anyone know how to get vst to communicate with foucusrite 2i2 scarlett ? Thanks Adam...

replies: 4 views: 261
Avatar for Adam12345678
Adam12345678 5 days ago
Avatar for nitraus

Hello, my good ole Radial X-Amp (old version, blue chassis) suddenly died after remaining turned on for some hours in a row. You...

replies: 2 views: 225
Avatar for nitraus
nitraus 5 days ago
Avatar for waveterm

Hi there ! Has anyone replaced the rotary encoder on a Sony DPS unit ? I have a DPS-F7 that has a broken rotary encoder. It...

replies: 1 views: 154
Avatar for waveterm
waveterm 5 days ago
Avatar for owai

Hello, I'm trying to fix a Roland HP 2900g, but i can't find a schematic or a service manual. A small transistor...

replies: 15 views: 3,183
Avatar for Jovlie
Jovlie 6 days ago
Avatar for denmla

Hi to all, I'm new here! Few moments ago my beloved Prophecy died - it wont turn on. I feel really bad, had it just for over a...

replies: 15 views: 427
Avatar for Rick Dalton
Rick Dalton 6 days ago
Avatar for wadesey

I have a Tapco 4400a spring reverb on long-term borrow that I finally got around to testing. I know these things are noisy, but...

replies: 6 views: 475
Avatar for wadesey
wadesey 6 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: 2 views: 684
Avatar for Audio Atelier
Audio Atelier 1 week ago
replies: 0 views: 184
Avatar for FMunny
FMunny 1 week ago
Avatar for plutoniq

Well I’m dead in the water it seems, after rebuilding the power supply I tracked down the 2-prong ac cable today and while the...

replies: 5 views: 901
Avatar for maxbobo
maxbobo 1 week ago
Avatar for CeeNotez

#35 1 minute ago I know this is an old thread but I am in dire need of some assistance. I own a VX2 and I pulled my studio...

replies: 0 views: 157
Avatar for CeeNotez
CeeNotez 1 week ago
Avatar for 5stringfretless

Hi folks. I am looking for a service manual for a Korg DT-1 Pro. This is the rack version of the tuner. Specifically I am looking...

replies: 1 views: 361
Avatar for LoveRawk69
LoveRawk69 1 week ago
Avatar for davidsound

Hi all. I just received a pair NS-10Ms from Japan. Good price and I was told they are fully working. One of the woofers isn’t...

replies: 2 views: 261
Avatar for davidsound
davidsound 1 week ago
Avatar for jayc

Hi guys, I live outside the US and the main power supplies here run at 230-240v. I just had a friend in the states pick me...

replies: 8 views: 2,219
Avatar for ang3l
ang3l 1 week ago
Avatar for el foarko

hello! finally joining the forum after years of lurking to make this thread... I have a Yamaha DX7 (mk.1) I got given a couple...

el foarko
replies: 10 views: 446
Avatar for el foarko
el foarko 1 week ago


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