In particular, I am doing the new wiring for the rear panel I/O. For the L/R pre-out main connections, some have made twisted pairs of wires, with one wire grounded to the I/O ground on one end and to ground on PC5, either eyelet 8 or eyelet 1, on the other end. The signal wire then goes from pre-out main to eyelets 7 and 14 for left and right channel, respectively.
Here's the thing. Because of the difference in location of ground eyelets 1 and 8 vs. signal eyelets 7 and 14, the signal wire is not shielded through its entire run. For the last leg of the run, the signal wire is unshielded, more so to the right channel than the left.
I am thinking of making a THREE wire twisted trio, one signal, the second connected to ground at the outputs and at eyelet 8 on PC5, and the third grounded only at one end (at the outputs on the back panel) but wrapped around the signal wire throughout its entire length.
Would this three-wire twist introduce too much capacitance and roll off the high end vs. a two-wire twist?
I also have large 1uF caps (K40Y-9) mounted in approximately the same positions the original smaller 1uF electrolytics were mounted (vicinity of the right/left channel bass and treble pots). Should I wrap a ground wire around the caps and their leads, as well? The reason why I am thinking of doing this is because of their proximity, especially the one for the right channel, to the power switch. Many posts online seem to complain of greater hum in the right channel of the PAS than the left.
What do you think?