Hello Lee!
On 06 Feb 98, Lee Macmillan wrote to Rich Lockyer:
 LM> Could you run down what you did again to cascade the channels?  I can't
 LM> find your original post and I may try that on mine.  Was it as simple as
 LM> taking the output of the channel 1 volume pot and running into the input
 LM> of channel 2's first preamp stage?
Basically, yes.  I used a DPDT switch with the second set of contacts cutting 
off the #2 input from the grid as well.  I also put in a pentode/triode 
switch, with a 470 ohm 5w resistor on each screen.
Left the way I did it, it is VERY brittle when cascaded.  Clipping the bypass 
cap on the #2 volume pot will take care of that, but will also render 
channels #1 and #2 identical when switched into "normal" mode and I didn't 
want to stray TOO far from stock on Tom's amp.  Had it been my amp, I would 
have made the cascade permanent, removed the bypass cap, and added a bigger 
plate resistor to the first stage to kill some of the gain, as well as a 
little revoicing.
What it does is basically make the #2 volume pot your master and the #1 pot 
the gain control.  It's not warm and fat distortion, as it's ALL in the 
second stage being overdriven.  Single notes tend to clean up quickly after 
the attack, and there's not a lot of increase in sustain.  Full chords don't 
clean up like single notes do, but there still isn't much more sustain than 
when set clean.  If it sounds like I'm not particularly thrilled with the 
results, it's because I know it could be better, but like I said, I didn't 
want to make too many changes, as I wanted it to be easily reversible since 
it's Tom's brother's amp.
Besides, Tom said that he was happy with the tone and that's what's 
portant.
You have to be VERY careful to remember to turn the "gain" control back down 
before switching back to "normal" mode or you'll go deaf. ~8-)
C-ya! Rich
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