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

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

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

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

Hello all. Some time ago, I purchased a small 8x2 mixer from a member here (who apparently knows nothing about it) in an ebay...

So question in the title. Is it really necessary? I'm talking more about transistor microphones that don't handle high...

I have a Blue Bottle Rocket Stage 2 which comes with the Powerstream power supply. It employs a soft start feature to avoid...

Hi all, does anbody know anyone who might be able to look at my Orion 32? I removed the power cable a few days ago and the...

Hi everyone. I am looking at getting my first desoldering rework station and was wondering if the cheaper ones are fine? A...

I recently damaged the output stage of my Loft 450 accidentally and need to fix it. If anybody has a schematic for this unit I...

Can anyone with a healthy NX5R or NS5R tell me what voltages I should be expecting on pins 1-8 of CNA3 and/or pins 1-4 of CNA2...

Hi, Today, my Command 8 power supply's transformer pretty much melted. Luckily the C8 was powered off when I started smelling...

Hey, I keep reading stuff about mods being done to MXL mics (or other cheap condensers for that matter) but I cannot seem to...

Hi all, I hope this is the right place to post this question. I was given a pair of very old Bose 101 speakers. I don't have...

Forward Hello fellow GS'ers! This is a reissue of a thread that I started over in the Cakewalk forums. It was immensely...

Hi folks I bought a second hand Mytek 8x192 of eBay it looks like someone did some tried to repair it themselves they replaced...

Although these are kits that you can buy and assemble if you have electonics engineering skills,...

Hi all, I recently installed a Maiku K12 capsule in the KM84 Ldc circuit and being low output (as vintage U87) I'm not sure if...

Tonight the 17v +/- lights went out on my power supply. I have yet to remove it from the rack, but I was curious to see if anyone...

I have been cleaning up my Tascam DA-30 MkII DAT recorder and there is one remaining fix to do: the brake pads. They are two 1mm...

Hi, does anyone have a schematic for this console. 2nd question does anybody have an idea why the direct outs which are...

There has been alot of talk about importance of conversion in recording chain, and lots of people want to know which AD/DA chip...

Hi. I have a Spirit 328 mixing console with no boot problem. Need a Hardreseting or Firmware Flash but nothing is found files,...

Such an awesome little box. Inspiration on every preset but boy are sourcing buttons tough! Anyone know where I can find the...

I recently acquired a DBX 286A and plan to use it mostly for voice over recordings. depending on the settings i can get a...

Does anybody know where I could get my hands on an stand adapter for a Sony microphone with a non-standard base? It appears to...

Just like the title says. I bought enough of these in the values needed to swap into the Hi EQ and Hi Mid EQ of the SC6000 I’m...

Does anyone know of a tech who has experience rebuilding Sontec 4xx PSUs? Ideally, im looking for someone in CA as ive...

Hello everyone, I am wondering if anyone here in the thread has had issues with their AWS 900 randomly rebooting? It seems to...

Hi. Hope someone can help me find a TASCAM connector. It's from a TASCAM MS 16 DBX jumper plug used when the machine is not using...

Hey all, I have a BM6 ribbon mic, and I would like to remove the insert with the ribbon from the top part of the mic, but it...

One of my Genelec 1031a's toroidal power transformer's primary windings have gone open. I have never encountered a...

Looking for a VSS-200 service manual or schematic. A service manual appears to have been linked on here a couple of years ago,...

Hi, I have an IGS Tubecore mastering edition with the standard tubes. I'm trying to put in some 6386's, and when I do the VU...

Hi folks, a friend owns an Art Pro VLA II that he doesnt´t use anymore, so he will give it to me for free the next days. I love...

Hi all, I'm trying to repair my Yamaha SPX90 (Mark 1) power supply. Besides recapping I have noted which other parts need...

Hi folks, I'm making a Phantom power Electret mic adapter (XLR to miniJack) based on one of popular DIY schemes (the goal is...

Hi all, My SPX90 (Mk I) stopped working. I've replaced all electrolytic caps and a couple of resistors. I've scraped all...

Anyone have a part number or specs on replacing the pots on these?

Hi Gang I've had my EVE SC207 speakers for a few years w/o problems. Yesterday, right side quit. I touch the button, and led...

So I've been picking up radio in my really nice guitar amp, always thought it was the strat I "shielded" but forgot to...

I am in the process of putting together my first studio. I received a great deal on a Soundcraft Spirit FX16 w/ Lexicon Effects...

Guys, I picked up a Tapco 4400 reverb recently and ALL the slider pots are quite scratchy. I've cleaned a lot of rotary pots...

Hello, I have discovered that I have a few vintage GE / Thorardson audio transformers that I would love to put to use but I...

Could anyone tell me if this line mixer would likely degrade the direct output signal or does it seem decent?...

I checked and read threads and replies for this subject and I'm convinced the https://www.ilitchelectronics.com/ system is the...

So I bought a Grace m101 preamp from Reverb. It looks perfect and was said to only be used a few hours. However, it seems I got a...

So I’m venturing into valve gear and need some basic understanding so I don’t kill myself. In the schematics provided the op...

I know most people are tired of reading about Tube MP's but i havent seen this question answered yet. Can the attack or release...

Has anyone used the Jensen model JT-MB-CA transformer in place of coupling caps for a mic pre input? It's a 1:1 ratio which you...

It seems audio scape offers meq built but it’s always sold out. A chassis is available at analog vibes. Don audio offers a...

I purchased a API 500v 10 slot with API L200 PSU rack about a year ago. The first units I put in them were a pair of Chandler...

Hi, not a pro but curious Have a PA amp using the 70 volt tap for speakers. Worked fine for 10 years. Now it's not turning On,...

Hi I have a weird problem. My OB8 has a tuning issue. Around E4, it drops about 3,2 semitones. The calibrations are ok the...