4 Hole Functionality from 2 Holes (Almost)

[Dave H]

hi, thanks for sharing this. I've been staring at the schemo, and can't quite figure out why the 1M in the "B" channel doesn't go directly to ground. Could you explain this? Thanks.

The Normal channel of the Watkins Dominator and Marshall 18W is wired like that. I have been using it for years and I think it's fine in 'mix' mode with 500k input resistance. It doesn't affect the tone like the 136k resistance does on the usual -6dB Lo input.