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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: 90 views: 139,758
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Synth Guru 1 day ago
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Anyone who offers technical services should get themselves listed into the new member directory here... Gearspace Directory:...

Tim Farrant
replies: 11 views: 56,182
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play/record 5 days ago
Avatar for Tim Farrant



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

Tim Farrant
replies: 1,167 views: 597,436
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JohnLRice 1st May 2022
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DSP Innovations has recently launched a FREE data sheet search site. The site, - Search Electronic Components ,...

replies: 19 views: 67,134
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msbettyhunt 27th March 2020

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

replies: 29 views: 4,818
NEWTON IN ORBIT 13 hours ago
Avatar for Yves Slaziett

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

Yves Slaziett
replies: 0 views: 89
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Yves Slaziett 19 hours ago
Avatar for Hoffmanwantsgear

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

replies: 6 views: 771
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Dang47 2 days ago
Avatar for DaveyJones

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...

replies: 0 views: 92
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DaveyJones 2 days ago
Avatar for M.S.P.

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

replies: 9 views: 269
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Jidis 2 days ago
Avatar for ELI-173

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...

replies: 64 views: 13,437
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TroyBaker 2 days ago
Avatar for koitsu

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...

replies: 5 views: 695
Avatar for j0nx
j0nx 2 days ago
Avatar for noah330

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

replies: 33 views: 5,182
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Shollymoore 3 days ago
Avatar for Arsene

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

replies: 31 views: 25,343
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bobdamit 3 days ago
Avatar for eddiejobson

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...

replies: 14 views: 14,855
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Tbone808 4 days ago
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Forward Hello fellow GS'ers! This is a reissue of a thread that I started over in the Cakewalk forums. It was immensely...

replies: 130 views: 35,686
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Cjhoffmn 4 days ago
Avatar for jlam

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

replies: 14 views: 2,895
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jlam 4 days ago
Avatar for Bob G

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

Bob G
replies: 173 views: 85,060
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Brian M. Boykin 5 days ago
Avatar for asthmaattack

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...

replies: 0 views: 112
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asthmaattack 5 days ago
Avatar for recordinghopkins

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...

replies: 164 views: 34,304
Avatar for Broderick
Broderick 5 days ago
Avatar for OinkQuack

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...

replies: 2 views: 201
Avatar for gyraf
gyraf 1 week ago
Avatar for Oliver Zülch

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

Oliver Zülch
replies: 49 views: 12,370
Avatar for KeithAndo
KeithAndo 1 week 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: 576 views: 411,673
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rrroque 1 week ago
Avatar for Julitium

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

replies: 2 views: 511
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girexx 1 week ago
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Such an awesome little box. Inspiration on every preset but boy are sourcing buttons tough! Anyone know where I can find the...

jml designs
replies: 0 views: 103
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jml designs 1 week ago
Avatar for Scoobis

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

replies: 63 views: 11,435
Avatar for cube99
cube99 1 week ago
Avatar for Smackheadmuppet

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...

replies: 23 views: 3,693
Avatar for Ben_G
Ben_G 1 week ago
Avatar for Brian M. Boykin

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...

Brian M. Boykin
replies: 4 views: 239
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Brian M. Boykin 1 week ago
Avatar for lucid turtle

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

lucid turtle
replies: 2 views: 241
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lucid turtle 1 week ago
Avatar for London Bridge St

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

London Bridge St
replies: 2 views: 169
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London Bridge St 1 week ago
Avatar for jerry

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...

replies: 34 views: 1,752
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jerry 1 week ago
Avatar for artr

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...

replies: 0 views: 125
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artr 2 weeks ago
Avatar for jetplane666666

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

replies: 2 views: 184
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jetplane666666 2 weeks ago
Avatar for partlenum

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

replies: 0 views: 100
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partlenum 2 weeks ago
Avatar for jasonlivermore

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...

replies: 23 views: 4,545
Avatar for Dirk Churlish
Dirk Churlish 2 weeks ago
Avatar for danibert

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...

replies: 10 views: 10,788
Avatar for Rowboat
Rowboat 2 weeks ago
Avatar for Aaron W

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

Aaron W
replies: 16 views: 3,582
Avatar for arbor
arbor 2 weeks ago
Avatar for owodok

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

replies: 0 views: 124
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owodok 2 weeks ago
Avatar for arbor

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

replies: 77 views: 1,307
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arbor 2 weeks ago
Avatar for Thisiscobras

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

replies: 1 views: 144
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Thisiscobras 2 weeks ago
Avatar for josher

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...

replies: 1 views: 282
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Rollthedice 2 weeks ago
Avatar for captainate

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

replies: 32 views: 34,667
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supernova7504 2 weeks ago
Avatar for ewhiz

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

replies: 13 views: 21,282
Avatar for Jerry S
Jerry S 2 weeks ago
Avatar for rog951

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...

replies: 11 views: 3,204
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lukegalea16 2 weeks ago
Avatar for ifiififiifiif

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

replies: 4 views: 285
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Brent Hahn 2 weeks ago
Avatar for jamnxtdoor

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

replies: 4 views: 259
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jamnxtdoor 2 weeks ago
Avatar for The Count

I checked and read threads and replies for this subject and I'm convinced the system is the...

The Count
replies: 2 views: 133
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The Count 2 weeks ago
Avatar for mmoeding

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...

replies: 2 views: 168
Avatar for mmoeding
mmoeding 2 weeks ago
Avatar for Brian M. Boykin

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

Brian M. Boykin
replies: 3 views: 219
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Brian M. Boykin 2 weeks ago
Avatar for Kas

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...

replies: 1 views: 1,785
Avatar for Euphonic Sonics
Euphonic Sonics 2 weeks ago
Avatar for AmplitudeAudio

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...

replies: 7 views: 2,133
Avatar for SnizzleD
SnizzleD 3 weeks ago
Avatar for Jb2

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

replies: 8 views: 621
Avatar for guinsu
guinsu 3 weeks ago
Avatar for billinder33

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...

replies: 4 views: 1,982
Avatar for shimoyjk
shimoyjk 3 weeks ago
Avatar for Dunebuggy

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,...

replies: 1 views: 153
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Thomas W. Bethe 3 weeks ago
Avatar for Jack Duelisis

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...

Jack Duelisis
replies: 22 views: 3,243
Avatar for Innermuze
Innermuze 3 weeks ago