Hi.
I initially used the Aussie for short, fast, loud rock, so I didn't notice any "breathing" or ups and downs. But I can see that it's a problem.
I've been thinking about the long release time. In the Dyna compressor, which I really like for its sound, the resistance paralleling the "holding" 10uF capacitor ranges is about 10kohms (when the pull-down transistors are "on" enough to turn Q5 off and start compressing). So the combined resistand and capacitance and release time is WAY shorter than in the original Aussie compressor.
So maybe a better value for the 1M resistor is around 22k ?? 22k and 4.7uF gives a time constant, RC, of 0.1 seconds. I *guess* that 0.1 seconds would be short enough to give a quick(ish) response to the envelope of a picked note, yet slow enough not to follow even the lowest frequencies (ie it is equal to 10 Hz). Hmmm... probably too fast for even the fastest vibrato.
I'm up to my ears in a McTube at the moment (a really excellent project), so would someone else like to try 22k (and maybe 47k) in place of that whopping great 1M resistor?
cheers
