Excess speaker wire

Thank you b4icu442. I have no intention of cutting my cables as they are factory terminated and cost a lot of money (for me). Good to know that the shape of the lay is not a bid deal. One of these days I'll have to route them under my floorboards.
Good to know from all the answers that it is still a hot topic!

No excess length!

A copper wire resistance equals to Ro (the metal conductivity constant), multiplied by its length in meters and divided by its cross section in square millimeters.
The longer the cable the higher is its resistance...
You should have speaker cables as short as possible, to keep the resistance as low as possible.
The shape of how you lay the extra length is not v big deal. the extra length IS!

Thank you all for such an informative and detailed responses. At the moment I am running the excess length in a zig zag, figure of 8 fashion and it seems ok for now. However allthe excess wire is on the floor underneath my hifi racks unit, right underneath my Luxman integrated amp. 

I'll have to unravel it one weekend and see if I can hear a difference..

Coiling shouldn't have any effect, since it is cable and not a wire.  Coiling single wire increases inductance, but coiling wire and return doesn't - because both wires in cable create canceling magnetic fluxes (opposite direction of the current).   Non-inductive wirewound resistors are created by folding wire in two and winding pair of wires with ends on one side (bifilar winding).  Winding wire and its return also creates "common mode choke", that has inductance for common mode signals and no inductance for normal (differential) mode signals.  Coiling power cable, especially on the core, creates such common mode choke filtering out electrical noise induced in both wires with no effect on regular (differential) operation.

I coil speaker wire for my bass bins. They are coiled from the outside to the inside. The center is then secured to the speaker and never touches itself. The cable is off the ground for static discharge/vibration.

Looks like a coiled and ready to strike snake.  Ready to be plugged into the speaker.. The fangs are Neg/pos terminals.. QUIET as a mouse.. NO noise... Routing is the key to a ZERO floor noise..

Welcome and enjoy the heck out of it... lots of fun.. :-)

Regards

@ludwig99 It may be better to use a shorter cable for one side.-
- some people will not agree
- it does make using those cables elsewhere a problem
- a friend has the same problem so he used a shorter cable on one channel and is very happy

Coiling any wire introduces electromagnetic waves, but are they audible?
- that depends on how resolving/sensitive your system is.
- speaker wires are low voltage compared to mains cables
- it could depend on the speaker wire also
- different cable geometries are more sensitive than others

Will coiling a speaker cable do any damage to your system?
- probably not, but again, depends on your amp
- you could get feedback into the amp - not good

I read a while back that power cables should not be coiled, but instead use a figure 8 and put a twistie to keep the figure 8 shape.

My A/V system has the same issue
- I kept both cables are the same length so I could use them elsewhere
- I simply loop one cable in a "U" shape under the TV stand
- there is no issue with sound quality, image etc..

Hope that helps - Steve

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