No one would hear any difference except for that annoying hum. Different length cables increase the chance of gound loop induced hum. Do them as close as possible.
dedicated lines, equal length?
I just moved and need to run dedicated lines for my system. I'm using monoblocks and have the speakers along the long wall so there is a signifcant diffference in the length of lines required to run the front end and one amp and that required to run the other amp I estimate about 20 ft differce with about 75 ft required to run the longest line. Will this make much of a difference or should i run equal lengths and just loose the excess for the one side around in between the joists? thanks