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

MicroSonic
replies: 88 views: 124,418
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gyraf 26th July 2021
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The GUTZ

139


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

Tim Farrant
replies: 1,164 views: 565,934
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Gainlab Audio 20th May 2021
Avatar for gabriel1

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

gabriel1
replies: 19 views: 58,601
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msbettyhunt 27th March 2020
Avatar for Tim Farrant

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

Tim Farrant
replies: 9 views: 47,618
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msbettyhunt 24th March 2020
Avatar for timsmooth

I bought a custom racked pair of Studer A900 channels, preamps/EQ, off of someone up in Canada several years ago through Ebay....

timsmooth
replies: 3 views: 103
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crosscutred 23 minutes ago
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ASR P2402. Who built it? This is NOT the modern German company that audiophiles rave about. That company was begun under a...

rfnoise
replies: 8 views: 2,427
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DJ. Mil 11 hours ago
Avatar for M.Retra

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

M.Retra
replies: 100 views: 30,614
Avatar for processing61
processing61 16 hours ago
Avatar for ickefes

Does anyone know good DIY versions of this inline preamp? A schematic with high quality components would be excellent. Like what...

ickefes
replies: 61 views: 11,335
Avatar for noisyben
noisyben 22 hours ago
Avatar for DONNX

Hi Gear Slutz...(audio DIY builders). I would like to pick your brains. As far as which caps to use or replace with it, I...

DONNX
replies: 140 views: 112,548
Avatar for JMoss1
JMoss1 1 day ago
Avatar for stepb

I bought some Focal Solo6 BE monitors off a large UK supplier, but three years in they developed a problem causing audible...

stepb
replies: 8 views: 269
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RetroFunk 1 day ago
Avatar for Karloff70

Anyone here ever do that? I have seen peopIe change the sound of korg MiniIogue's for the better and I think I saw someone do it...

Karloff70
replies: 8 views: 264
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Farshad 1 day ago
Avatar for Virtanen

Hi all, My Yamaha was working fine the last time I used it, but today it's don't boot. Screen comes on when powered up...

Virtanen
replies: 1 views: 85
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Thomas W. Bethe 2 days ago
Avatar for plutoniq

I'd read about some success stories with the Alesis HD24 + SSD route, but nothing pertaining to using a SSD in a Fostex...

plutoniq
replies: 2 views: 2,515
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Cascodo 2 days ago
Avatar for bubblebash

I have an FB-01 with pretty bad signal bleed when I assign different sounds to the Left and Right outputs. Makes tracking a bit...

bubblebash
replies: 4 views: 208
Avatar for bubblebash
bubblebash 3 days ago
Avatar for ifudontlikebees

Hey guys! Does anyone here know how to build a farfisa FA/R power supply? I just got a farfisa compact duo that I can’t test...

ifudontlikebees
replies: 6 views: 367
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RetroFunk 3 days ago
Avatar for cprovenzo

Hello Everyone, I was hoping someone might be able to offer some advise on a problem I'm having with my Avalon U5. I've...

cprovenzo
replies: 12 views: 933
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iron 3 days ago
Avatar for Clbraddock

What would be the best option for converting a synth (OB6) line level unbalanced signal to balanced? I'm wanting to interface it...

Clbraddock
replies: 9 views: 379
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David Rick 4 days ago
Avatar for twinfin

The left control room out is not working right . The meters are showing signal coming from the tape machine , and I do hear a...

twinfin
replies: 20 views: 2,053
Avatar for Jim Williams
Jim Williams 4 days ago
Avatar for robmendoz3

Hi everyone. I recently bought a Juno 106 from ebay. I noticed that there was some crackling sounds after I played the keyboard...

robmendoz3
replies: 7 views: 6,014
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pedrohash323 5 days ago
Avatar for konstantingroove

Hi everyone! I have recently been tasked to bring our old dusty Ampex AG440B back to life. It's been quietly sitting in the...

konstantingroove
replies: 17 views: 364
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konstantingroove 5 days ago
Avatar for grimnebluna

Hi gearspace Soo, i'm opening up this thread again in the GeekZone. I'm thinking of buying a couple of smart plugs to power...

grimnebluna
replies: 5 views: 277
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grimnebluna 6 days ago
Avatar for aztech222

Hello, I've had the Voice Prism Plus for a good while and really love it but I now have a problem : a few days ago i pressed...

aztech222
replies: 15 views: 3,855
Avatar for Bernd1963
Bernd1963 6 days ago
Avatar for DistortingJack

I was reading about the 80X0 Sennheiser mics not long ago, and someone was complaining about the lack of damping in their design,...

DistortingJack
replies: 3 views: 165
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DistortingJack 6 days ago
Avatar for WanderingScholar

Hello, whenever I turn on phantom power, I get a hum around 50hz. I had this same problem a year ago and I was able to cure it by...

WanderingScholar
replies: 11 views: 308
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WanderingScholar 1 week ago
Avatar for leeharveyosmond

I have a Shure Sr107 that I picked up for 3 q-tips and a bag of cheetos.. I like to MOD it .. I'm hoping one of you expert...

leeharveyosmond
replies: 8 views: 1,606
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Scripps66 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...

Chagalj
replies: 557 views: 384,076
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Zoot 1 week ago
Avatar for Albini

Hello. I was wondering if anyone could advise me on upgrading the opamps on a Soundcraft TS24 console. I believe they are all...

Albini
replies: 1 views: 118
Avatar for Jim Williams
Jim Williams 1 week ago
Avatar for smokchsr

Just wanted to see if anyone has had experience working on these critters. This one has the semi common Hum Buzz, quite loud,...

smokchsr
replies: 1 views: 390
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bunnerabb 1 week ago
Avatar for Simultaneity

Hey there, My studio has a Mojave MA-200 that gets a lot of use. We seem to be burning through tubes, however. We've replaced...

Simultaneity
replies: 14 views: 3,540
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SDunscombe 1 week ago
Avatar for ToniMartin

Hi all! So my Sennheiser MKH40 has started to give me a weird sound. Not always. But sometimes. I tried changing the cable,...

ToniMartin
replies: 0 views: 105
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ToniMartin 1 week ago
Avatar for Gonzbull

Hi all hope you’re well, So I have an AX84 P1 5 watt tube amp that I built. I’ve got a few other amps so I would like to...

Gonzbull
replies: 5 views: 275
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samwinston123 1 week ago
Avatar for Snatchman

Hello..I posted this in another thread I guess it was the wrong one..Anyway, I'm having problems with my HEDD monitors and I'm...

Snatchman
replies: 4 views: 176
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Snatchman 1 week ago
Avatar for lifelessgraphite

Hello, Can someone with a Yamaha DX7mk1 please confirm the exact model of Hitachi microcontroller that serves as the DX7's main...

lifelessgraphite
replies: 2 views: 139
Avatar for lifelessgraphite
lifelessgraphite 1 week ago
Avatar for t-hiho

is a broken M500 repairable? does anybody know if there is a replacement ribbon filament (even from other manufacturers)??

t-hiho
replies: 11 views: 7,794
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leddy 1 week ago
Avatar for tun

Hi all I have an AlphaLink sitting around doing nothing and I also need a number of DC coupled ins and outs so my DAW can...

tun
replies: 0 views: 86
Avatar for tun
tun 1 week ago
Avatar for cinetj

I'm getting this high freq beeping kind of noise (file attached) on brand new presonus speakers even with no audio cable plugged...

cinetj
replies: 0 views: 96
Avatar for cinetj
cinetj 1 week ago
Avatar for Molybdenum

has anyone had to repair the rubber mounting shocks in the base of a sony c37, or know if there is a replacement part available....

Molybdenum
replies: 5 views: 1,022
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Thomas W. Bethe 1 week ago
Avatar for steffrhys1@mac.c

Hi, I have a Rode Classic II which stopped working. I had 2 problems, one was that the cable on the microphone end was...

[email protected]
replies: 2 views: 615
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Moo 1 week ago
Avatar for JoaoMoreira

Hi everyone! Recently I got scammed and bought a broken Vintech Dual 72 rack preamp. Worse than that it happened through a...

JoaoMoreira
replies: 6 views: 308
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NathanEldred 1 week ago
Avatar for coreyspencer

I don't know or cant figure out why this QSC HPR152i active loud speaker is doing what its doing. So when I opened it up I had...

coreyspencer
replies: 22 views: 379
Avatar for Rick Dalton
Rick Dalton 1 week ago
Avatar for headrc

Hi, I guess this is where to post regarding this question. Does anyone here have a pinout diagram for the akg C34 and its s24...

headrc
replies: 0 views: 90
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headrc 1 week ago
Avatar for bamsehopp

Hi, I´m looking for a passive headphone volume attenuator with 3 set levels of volume: quiet, normal and loud. I can´t seem to...

bamsehopp
replies: 0 views: 99
Avatar for bamsehopp
bamsehopp 1 week ago
Avatar for ROSELJR

Can an SS34 Schottky diode be connected in series between the power supply and the ground to prevent reverse connection? as the...

ROSELJR
replies: 1 views: 129
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Philbo King 1 week ago
Avatar for sirjuxtable

Hey Geekonauts, I have a MOTU 828es - how do I determine the clip level for the A/D input converters? The reason I ask, is...

sirjuxtable
replies: 12 views: 416
Avatar for circusreturn
circusreturn 2 weeks ago
Avatar for craigb

A buddy of mine needs to replace a VU meter in his Drawmer 1960. Drawmer wants $140 for one. Anyone know of a cheaper suitable...

craigb
replies: 2 views: 701
Avatar for CCorcoran
CCorcoran 2 weeks ago
Avatar for Hoffmanwantsgear

Hi, does anyone have any experience or ideas regarding a Blue Bottle Rocket Stage 2 power supply, the red light turned to green...

Hoffmanwantsgear
replies: 16 views: 2,219
Avatar for sbou
sbou 2 weeks ago
Avatar for johhnyg

Hello All, I have a Akai DPS 16 that is new to me. When I turn it on it does not find the ATA drive. I have pulled the...

johhnyg
replies: 2 views: 158
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ruffrecords 2 weeks ago
Avatar for Red Sky

Picked up a used drawmer 1960. Not so stoked on the dull 1D sound of the pres but the compressor has some quality retro flavour...

Red Sky
replies: 18 views: 5,298
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tmarra 2 weeks ago
Avatar for Ideasite

I replaced my R0DE NTV Tube with an equivalent GrooveTubes 12AT7 tube. While replacing the tube, I spied 2 adjustable pots on...

Ideasite
replies: 20 views: 2,917
Avatar for Lemon Squeezer
Lemon Squeezer 2 weeks 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...

Hoffmanwantsgear
replies: 3 views: 531
Avatar for Jsharpmusic
Jsharpmusic 2 weeks ago
Avatar for gearstudent

Hello, If you run one small analog mixer into another (perhaps larger) analog mixer, is that about the same signal quality...

gearstudent
replies: 2 views: 192
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gearstudent 2 weeks ago
Avatar for Thomas W. Bethe

A client of mine had it and did not want it anymore. It was made in the early 1950s or late 1940s. I have not turned it on but...

Thomas W. Bethe
replies: 8 views: 256
Avatar for kludgeaudio
kludgeaudio 2 weeks ago
Avatar for johnforrestal

Hi everyone! I know this is a long shot, but would anyone have an idea why this is happening?! I have an older M80 with Jensen...

johnforrestal
replies: 1 views: 111
Avatar for Thomas W. Bethe
Thomas W. Bethe 2 weeks ago
Avatar for ltemma74

I'm putting together a direct recording studio in my apartment. I have four different tube guitar amp heads that I record with. ...

ltemma74
replies: 18 views: 14,801
Avatar for Gearnerd320
Gearnerd320 2 weeks ago

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