Help Gyraf SSL Compressor

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Buddhafred

New member
Joined
Oct 17, 2021
Messages
3
Location
New Zealand
I've just finished building a Gyraf SSL Compressor. It doesn't seem to compress at all though. It does turn on and off and the makeup gain works. I've checked all voltages I can and everything seems normal except that all three THAT 2181s have +15v at pin 7 and -2.9v at pin 5. Any ideas what could be wrong? Many thanks
 
..please use (and read!) the dedicated very-very long help thread:

https://groupdiy.com/threads/gssl-help-thread.47/
It would be a real achievement if you had an error that hasn't been had and fixed before in there :)

/Jakob E.

ps: your voltages look alright
To add to what Gyraf says, go the the help thread and use the search function, selecting "this thread". Try searching something like "voltages".
 
..please use (and read!) the dedicated very-very long help thread:

https://groupdiy.com/threads/gssl-help-thread.47/
It would be a real achievement if you had an error that hasn't been had and fixed before in there :)

/Jakob E.

ps: your voltages look alright
Thanks very much. And yes, I found a reply from June 5 2004 that solved the problem. It was that I hadn't jumpered the hpf solder spots near the TL074. So a real simple fix. Long live Gyraf!
 

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