Re: Cap for ash guitar?
There are no rules for cap values.
Not for pickup models,
Not for pickup types,
And certainly not for wood species.
There are some conventions.......people just seem to put the same cap for pickup type as what was used back when guitars were first made in the 50s when the amps and music style were wholly different to now.
I have used anything from .0001 to .1 ......and a lot of ones inbetween. Bridge I tend to go anything from .033 and up. Neck is usually .01 and below.