Wire Tangle?????

You really shouldn't coil wire because it causes inductance.

Years ago I got tired of having to battle the whole mess behind my entertainment system shelves, so I took the whole thing apart and built slide out trays for the equipment to rest on. Also I put in lights in the back with a switch at the front of the rack. Then it became fun to rewire stuff, and everybody who stopped by the house got a demonstration of the set up.

I'd attach a picture of that, but I don't have that house anymore, and it was built into the wall. I bet the new owners liked that set up.

And it is a bad idea to coil the wires up and tie them neatly together. Looks good, but you will end up with cross talk from the power cables to the signal cables.

Rather than coil them make a snake. Ok what's a snake? I just made that up. Think of the letter S then the dollar sign $. Where the vertical line in the $ is where you would squeeze the cable together. Actually that is more like an accordion. Also if it's possible don't run power cables cables parallel to speaker cables and interconnects. Try to cross them at 90 degrees.