Audio and Design F760

I have had enough of these units on my bench over the past 6 months to say that the compressor element sound pretty good...
is anyone up to get a CLONING process started?
I have no experience on this but i can provide schematics and other things...







Best,
Mattia.

Prototype PCB will be here next week....

Did it as a simple rectangular PCB with the comp/lim/exp/gate on one PCB.... but for now with hand wired switches..... once I am satisfied it works OK I'll add the Carnhill transformers in/out to check the improvement.... then re-do it with PCB mount everything.

Bought a unit off ebay to compare it with as well .... and have someone locally who is very familiar with the sound of the originals.

I think I have this one pretty well covered.

Colin

you are THE MAN!

count me in for a few of those then... 

(any chance to get it on 500 series format?)

Holy crap, I´ve been thinking of doing this since years but never found enough time to get into it. If I can be of any help let me know.

Wooot, i really like those adr compressors. I've got one of their broadcast oriented compressor and heard their channel strip compressor. Nice and crunchy when put through it's paces. love it on drums.

Love to see the prototype pcb !!

greetings,

Thomas

I have the original 3U version of the F760X-RS, which has the Octal Gardeners transformers, that A&D specify.

One channel sounds great, & the other sounds bad.  I wish i could find some calibration info for it.  I have the manual for the 2U version, which everyone thinks is the same as the 2u version, but the boards have more presets on them.  It is also difficult to calibrate without extender cards because the cards sit upright.

This isn't the first time I've asked, but, does anyone know how to calibrate these things ??   
A few years back I even spoke to Ian Harley at A&D who designed the thing, & he couldn't remember much about it !!

Hi,
I´ve got the Compex Limiter F760X-RS. Would like to contribute about 12 megs of technical notes, calibration procedure, etc. Can I send it to someone via mail?
regards
Bernd

Colin,
check your mail.
regards
Bernd

look like a cool project! it is a vca based compressor?

Rafael

Rafael said:

look like a cool project! it is a vca based compressor?

Click to expand...

no no.... :-X :-X :-X

I'm sooooo in for a few more of these as well.  Love em.

You rock!

Michael

bernbrue said:

Hi,
I´ve got the Compex Limiter F760X-RS. Would like to contribute about 12 megs of technical notes, calibration procedure, etc. Can I send it to someone via mail?
regards
Bernd

Click to expand...

As always - when emailing anyone any schematic - pleeeease consider a CC to [email protected]

Jakob E.

Hi Jacob,
will do so, since there are more people interested in the documents.
regards
Bernd

Well,
here is all we need.
http://www.diyfactory.com/data/stevejones.htm
regards
Bernd

bernbrue said:

Well,
here is all we need.
http://www.diyfactory.com/data/stevejones.htm
regards
Bernd

Click to expand...

All you need maybe !!  After 6 years I'm stil trying to find the info on my unit.      Mata Haze is there anything on it at your place  ???

Rob Flinn said:

Quote from: bernbrue on Today at 05:17:07 am
Well,
here is all we need.
http://www.diyfactory.com/data/stevejones.htm
regards
Bernd

All you need maybe !!  After 6 years I'm stil trying to find the info on my unit.      Mata Haze is there anything on it at your place  Huh

Click to expand...

no really...what I have is what's available on this website ->http://www.diyfactory.com/data/stevejones.htm<-
:-\

Rob,
look at groupdiy account. There are handwritten notes for calibration as well. Maybe it suits for your modell, too.
regards
Bernd

Mattia,
I would like to add transformers for my Compex. It´s the same as shown in the pictures above. Do I need simple 1:1 trannies for input and output?
regards
Bernd

bernbrue said:

Mattia,
I would like to add transformers for my Compex. It´s the same as shown in the pictures above. Do I need simple 1:1 trannies for input and output?
regards
Bernd

Click to expand...

The inputs are 10k:10k & the outputs are 600:600 according to the FX760 manual.

@ colin:  did you design a new pcb from the schematic? or did you copy the original pcb?

I'm still working on a diy ADR F600 limiter, I have pcbs from 3 different units, but no one is according 100% to the original schematic...
there are missing some parts, or components have different values, different transistor types... 

regarding the f760  you also find a lot of info in the    scamp_760.pdf  (analogrules.com)