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Views: 6,126
24th November 2017
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Avatar for Tim Farrant



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

Tim Farrant
replies: 1,047 views: 422,334
Avatar for Led Music
Led Music 4 days ago
Avatar for gabriel1

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

replies: 16 views: 34,998
Avatar for ponzi
ponzi 27th October 2017
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: 64 views: 73,048
Avatar for lahatte
lahatte 27th August 2017
Avatar for Tim Farrant

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

Tim Farrant
replies: 8 views: 24,173
Avatar for Aniol1349
Aniol1349 10th June 2017
Avatar for Subversounds

Hello, I'm a student in electronics and I want to build a solid 48V phantom power supply for practice. But i also wanted to do...

replies: 9 views: 452
Avatar for Radardoug
Radardoug 2 hours ago
Avatar for golden_ears

---I know this had been a popular topic in the past, but I have not found any answers. Most posts say "they" are...

replies: 7 views: 1,354
Avatar for golden_ears
golden_ears 5 hours ago
Avatar for spectrasound

Can anyone telll the number of the FETs used in the front end of the Presonus M80 mic. preamp? Can't get schematic(s) anywhere!

replies: 0 views: 83
Avatar for spectrasound
spectrasound 6 hours ago
Avatar for Mr Funk

Hi all I have a Tore Seem (I think Germanium) amp that is racked up with an external PSU. I was told by the seller that this was...

Mr Funk
replies: 4 views: 175
Avatar for Mr Funk
Mr Funk 6 hours ago
Avatar for Riinehart

Hi all, I'm trying to bring a Crumar Performer back to life. It looks like a previous owner made some sort of modification to...

replies: 0 views: 100
Avatar for Riinehart
Riinehart 7 hours ago
Avatar for Speelycaptor

Hi all, i got a beaten up Roland Juno 60 that i'm currently refurbishing and am stuck with an issue on one voice (Level , amp...

replies: 5 views: 224
Avatar for Johnny T
Johnny T 14 hours ago
Avatar for Triscuit

Hi y'all - I just scored a super cheap Oktava mk-319 on eBay that was listed as "not working when plugged in." I...

replies: 6 views: 2,372
Avatar for teleforman
teleforman 21 hours ago
Avatar for drplywood

Hello Folks, wondering if anyone has the manual for the ADR express limiter that they would be so kind as to share....

replies: 3 views: 1,476
Avatar for zdusper
zdusper 1 day ago
Avatar for bxt403

Knowing how much electricity a modern audio interface or convertor consumes (along with a computer); I've put my setup in limbo...

replies: 15 views: 704
Avatar for chris661
chris661 1 day ago
Avatar for Seccione

Hi, first post to Geekslutz I'm fixing old Teisco 60f analog synth, it has serious hum problem, amongst many other things. It's...

replies: 58 views: 4,123
Avatar for Speedskater
Speedskater 1 day ago
Avatar for Bramley

Having an issue with one of my E8x monitors, randomly sounds like a power down 'thump' then emits loud white noise-ish sound. ...

replies: 2 views: 254
Avatar for Bramley
Bramley 1 day ago
Avatar for BuckieJoe

Hi fellow slutz. So I own a pair of active Tannoy Ellipse 8 (not iDP). Decided to measure room response and noticed a dip near 2...

replies: 11 views: 435
Avatar for BuckieJoe
BuckieJoe 2 days ago
Avatar for Jahroen

HI folks! I've got a rare Pearl SC-40 on my bench in need of repair. I want to change all the electrolytics an tantalums in the...

replies: 2 views: 369
Avatar for Jahroen
Jahroen 2 days ago
Avatar for Redsandblu

Hi, I need to change one of our LA-2A from 110V to 220V (before shipping it out to a buyer). Since the manual doesn't say...

replies: 16 views: 2,207
Avatar for SP2016
SP2016 2 days ago
Avatar for Sarsicus

Hoping someone has a schematic of these preamps. There are two revisions, this is the earlier revision. It is the same as the...

replies: 1 views: 220
Avatar for cathode
cathode 2 days ago
Avatar for Jacklynn

Greetings everyone, I just wanted to direct this question to the folks that post here who are audio electronics experts like...

replies: 26 views: 34,143
Avatar for y kiri
y kiri 2 days ago
Avatar for absrec

Hey everyone... I found a pair of PPM drivers that used to be in my Trident 80B. I changed them out to a pair of VUs at some...

replies: 1 views: 226
Avatar for Vitalis
Vitalis 3 days ago
Avatar for pmboos

First I hope I chose the right forum... I have an E-Mu station XL-7 command station decked out with some additional ROMS. I'm...

replies: 0 views: 154
Avatar for pmboos
pmboos 3 days ago
Avatar for eljacko876

Problem: I have a Defective JBL LSR305 speaker that will power on once a month. When it does power on, it plays for a few...

replies: 2 views: 341
Avatar for Jay Rose
Jay Rose 3 days 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...

replies: 7 views: 295
Avatar for M.Retra
M.Retra 3 days ago
Avatar for analogTinkerer

I built a tube spring reverb unit a while back and I've been slowly making improvements to it until yesterday when I think I...

replies: 10 views: 624
Avatar for analogguru
analogguru 3 days ago
Avatar for MLAudio

So I bought this preamp earlier this year (one of the first production pieces--payed $389 USD). I put it through its paces and...

replies: 79 views: 32,376
Avatar for travisbrown
travisbrown 4 days ago
Avatar for ovibis

Hi I just got a pair of Proac100 . They are paired with a Bryston 4BST , Dangerous Monitor ST and Lynx Aurora 8. Recently I was...

replies: 10 views: 1,153
Avatar for prp
prp 4 days ago
Avatar for esppse

Hello, I am using an Irig IO with a Midi solutions quadra thru. The quadra thru is supposed to be powered by midi but the Irig...

replies: 0 views: 193
Avatar for esppse
esppse 4 days ago
Avatar for Bramley

Was gifted a pair of NS10s with one blown woofer. Replacements have more than tripled in price so I decided to try the recone kit...

replies: 24 views: 4,602
Avatar for Bramley
Bramley 4 days ago
Avatar for rp3703

Hopefully this question does not reveal how little I know about electrical engineering but I picked up a non-working Ampeg...

replies: 3 views: 229
Avatar for kirkus
kirkus 4 days ago
Avatar for invalidusername

Hi I have a PORTA 07 with a faulty voltage regulator. There's only written B891 on it. What's an equivalent part ? What's its...

replies: 13 views: 661
Avatar for Popsct31
Popsct31 4 days ago
Avatar for slor

I've built a standalone reverb unit based around a Hammond "necklace" spring unit. I more or less used the Fender /...

replies: 0 views: 186
Avatar for slor
slor 5 days ago
Avatar for turing

i've been using a gap pre73 that's suddenly developed a bad fault.......basically all the gain has disappeared. if you crank it...

replies: 2 views: 261
Avatar for turing
turing 5 days ago
Avatar for Teej

Recently got given an R8 to play around with...I work on a fair amount of lo-fi music so this is pretty cool! Problem:...

replies: 10 views: 226
Avatar for kirkus
kirkus 5 days ago
Avatar for yannlu

Hello GS, I have here a SC SIX TRAK for repair. When I turn the value pot, the max value is already reached when the pot is...

replies: 0 views: 223
Avatar for yannlu
yannlu 5 days ago
Avatar for Cohnnyjash

Can I safely use a Linksys AD12V/1A-SW to power something that requires a 12v 1000 ma adapter? It does work, but I don't know...

replies: 1 views: 162
Avatar for MediaGary
MediaGary 6 days ago
Avatar for wildplum

Why would a mic cable not pass phantom power? The cable passes the Markertek RX-1 cable tester and works just fine with...

replies: 7 views: 347
Avatar for kirkus
kirkus 6 days ago
Avatar for sameal

Does anybody see any potential issues using this old switch panel to change between cabs? Im thinking since there's a ground...

replies: 7 views: 301
Avatar for wrgkmc
wrgkmc 6 days ago
Avatar for SirLurchington

Hello fellow engineers, I was hoping that someone might have some insight into an issue that I'm encountering with a Helixnet...

replies: 0 views: 108
Avatar for SirLurchington
SirLurchington 6 days ago
Avatar for TiravTiger

Wondering if anyone could help me determine the value of resitors that has burnt out in this VA537 preamp. This is the resistor...

replies: 5 views: 330
Avatar for briczo
briczo 6 days ago
Avatar for fynsta

Hi! I've been using my Tascam TSR8 for a good ten years now and as of last week i've noticed a significant difference in...

replies: 6 views: 399
Avatar for fynsta
fynsta 6 days ago
Avatar for trodsky

Hello. I posted this over at the gear forum....

replies: 0 views: 151
Avatar for trodsky
trodsky 1 week ago
Avatar for Twangcat

Hi, does anyone here have TL Audio M4 schematics? Any recommendations for tube replacements? thank you

replies: 1 views: 192
Avatar for Twangcat
Twangcat 1 week ago
Avatar for chris319

What type of screw connector is opposite the XLR connector on the Shure A96F? Not the 3.5mm mini plug, but the weird screw-on...

replies: 4 views: 426
Avatar for Jay Rose
Jay Rose 1 week ago
Avatar for stevo991

I would like to start a thread for all of you slutz out there that has any info or schematics on AMEKS BIG, Recall, and 501 by...

replies: 18 views: 1,439
Avatar for Matt Syson
Matt Syson 1 week ago
Avatar for skanker

Hi Folks I have an issue with one of the Filtek modules in my 2 channel rack and would like to know your thought's...

replies: 0 views: 169
Avatar for skanker
skanker 1 week ago
Avatar for Cabirio

Hi all, I just wanted to share a simulation model I've put together for the Gyraf SSL compressor, I've just started playing with...

replies: 6 views: 492
Avatar for miscend
miscend 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: 62 views: 2,429
Avatar for tchgtr
tchgtr 1 week ago
Avatar for Earwormer

I’ve been researching transformers and was searching for boxes that housed transformers to color the sound coming out of my...

replies: 5 views: 368
Avatar for dfchandler
dfchandler 1 week ago
Avatar for Lfoxxx

Hey guys, got my 707 after a couple of years it being broken, back from the repair shop, the power supply plug had fallen, and...

replies: 8 views: 318
Avatar for Lfoxxx
Lfoxxx 1 week ago
Avatar for BrianIsExploring

Hi Everbody, I have some experience building small audio fx DIY kits for electronics classes when I was in college. Never really...

replies: 3 views: 223
Avatar for BrianIsExploring
BrianIsExploring 1 week ago
Avatar for Kenny B

I'm been experimenting now with recording my acoustic guitar with two Schoeps MK4 capsules... actually been using these since...

Kenny B
replies: 9 views: 289
Avatar for Bushman
Bushman 1 week ago
Avatar for Brent Hahn

A pro player comes in with a Roland keyboard controller and a separate Roland sound module, connected via midi. I take his...

Brent Hahn
replies: 24 views: 395
Avatar for Brent Hahn
Brent Hahn 1 week ago
Avatar for xeper

Hi, Couple weeks ago I bought an old Fernandes Stratocaster guitar (80's I think) and my friend who repairs guitars took care...

replies: 4 views: 5,491
Avatar for xeper
xeper 1 week ago


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