Just roll /coil -up the excess as you wish, even as tightly as you may need to hide it..
Contrary to popular belief, it has
no significant effect on adding inductance - because the twinned-pair are much closer, and the result cancels
really well. I measured this once long ago - will see if I can dig it out...
EAT: found my saved text - once posted on a.n.other place; pics long lost:
Posted: Wed Mar 7th, 2007 07:56 pm
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Yes coiling a single cable will increase loop inductance. But if the cable is a shotgun-pair, or indeed any paired geometry, the increase will cancel - because the current flow is balanced in opposite senses. Increased capacitance between the close turns will tend to counteract this increase in impedance of course.
Anyway, seeing this thread has just prompted me to actually (shock! horror!)..actually try to measure the effect.
(deep breath) Here's 4M of NACA5, one of the more inductive cables on the market, because of the wide spacing between the conductors. Laid out straight, shorted one end...:3.7uH. Coiled into the tightest flat coil I could arrange (total 8inch diameter)..: 4.1uH. So the cancellation isn't perfect..but 0.4uH at 20Khz into 8ohms makes a difference of 0.02dB. Very, very insignificant IMO.