« Reply #4 on: June 24, 2015, 03:37:21 AM »
Since I am not sure whether I violate a copyright if I post the schematic I describe it here verbally.
It uses the normal 5-way 2-level selector. One level selects the pickups as usual. From the wiper/hot output of this level run a 470k resistor to the taps on the second level you wish to lower the pot value (e.g. to the tap activated in #1 neck and #3 middle). Final step: run a wire from the wiper/output of the second level to ground.
This puts the 470k resistor to ground whenever the selector is in a position where the neck or middle pickups are engaged, so you get a virtual 240k volume pot. If only the bridge pickup is engaged the 470k resistor is not connected to ground, so you still have your 500k volume pot.
Cheers Stephan
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