Ross/Dyna compressor build questions.

[alparent]

I'm working on building a compressor with a switch to select between Ross or Dyna values.
(Does the difference between the two justify this?)

I also want to replace the ca3080 with a LM13600.
Any advantages in using both sections of the LM in parallel instead of just one section?

Amy comments on the work in progress is much appreciated.

[merlinb]

(Does the difference between the two justify this?)

AFAIK, the only difference is one bias resistor (220k or 470k?) If that's all it is, it's definitely not worth the difference.

I also want to replace the ca3080 with a LM13600.
Any advantages in using both sections of the LM in parallel instead of just one section?

Not really. But you could make a stereo versions quiet easily!

Might I also suggest my own compressor, the Engineer's Thumb (shameless! ). It does everything a Dyna can do, and much more. And better.
http://valvewizard.co.uk/engineersthumb.html
http://www.diystompboxes.com/smfforum/index.php?topic=97123.0