Yet another SSL compressor Turbo Mod Question

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kingkorg

Well-known member
Joined
Apr 15, 2017
Messages
2,972
Location
Norway
Hi guys!

I am into modding my SUMO bus compressor these days. It is based on SSL, but doesn't behave quite like original.

It behaves exactly the same as GSSL without turbo mod. The catch is that SUMO's compressor has already two sidechain VCAs, but mono signal still gets compressed harder than sides. I cant find GSSL schematic with Turbo Mod included so i can't tell what can be done with SUMO. 

Sumo compressor part of the schematic is attached. 
 

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  • 91001-2-D.pdf
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If I get it right at first glance, the control voltage after IC  7A/B gets mixed instead of combined by diodes which would achieve the original behavior you are after. If you compare it with the original schematic from ssl it should become obvious what is missing.

hope this helps,

Michael
 
Hi @kingkorg , have you modded the SUMO ? if yes, I'm interested to know how you did it. I have one And I would like to mod it also.
thank you
 
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