• If you have bought, sold or gained information from our Classifieds, please donate to Group DIY and give back.

    You can become a Supporting Member which comes with a decal or just click here to donate.

FS: Forssell Opto Compressor

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

G-Sun

Well-known member
Joined
Sep 20, 2011
Messages
980
Location
Norway
Hello!

For sale: A Forssell Opto Compressor

IMG_0613_700.jpg


Status: Not working.
Needs some troubleshooting,
and I don't seem to have the skills/patience to finish this.

I bought the pcb from user hitchhiker,
presumably in working condition.
But, because a misunderstanding I put 30VAC on the board that could have damaged some components,
or there are some other reason for it not working.

Features:
- Wired for 230V
- JLM ACDC psu
- JLM Regurgitator balanced output
- NE5534 opamps

More pictures: https://www.dropbox.com/sh/n0h4eh505gp7317/AAAu1C1-hJHfuRVcsaBuiL7ga?dl=0

Detailed status:
- Voltages/psu: Working fine
- Regurgitator out: Calibrated and fine
- Bypass: Fine
- Gain: Working fine
- Threshold/Attack/Release/Ratio: Not working properly
- GR-meter: Seems to work fine, but not finished confirmed
- Case: Fronpanel.de , my custom design
- All ICs replaced
- Optoes replaced

More details: http://groupdiy.com/index.php?topic=16016.msg793496#msg793496

Price: I've used 5000nok/550eur on this one
Please make me an offer reflecting that.
 

Attachments

  • IMG_0613.JPG
    IMG_0613.JPG
    606 KB · Views: 22
Back
Top