OK, something to spice up Geekslutz = here is where we post images of the INSIDE of audio equipment. Disclaimer; any photo...

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

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

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

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

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

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

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...

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,...

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

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

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

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...

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

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...

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

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...

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

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

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...

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...

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.

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...

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

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

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

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...

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

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...

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

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...

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...

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

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...

Hi all I'm a long time reader of this forum, and a newly registered member, from Paris, France. I bought a Yamaha SPX90...

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...

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...

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...

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...

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...

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

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

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...

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

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...

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...

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

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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...

#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...

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...

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...

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...

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...