On Tue, 20 Nov 2012 12:00:38 -0800, Bill
wrote:


Action:

- Unplug the left rear speaker wire from the back the surround sound
system.

Result:

- Left rear speaker goes dead (of course)
- Right rear speaker stops crackling


Try leaving the first speaker connected and disconnect the
other speaker.

Then a test is to run a different wire or wires along the
floor and see if those different wires eliminate
the problem.

Or try different speakers.

Or try a different amplifier.

Note: Wires which are run in a house can have nicks or shorts
if they have scraped something metal. Or a wire staple holding
the wire might be shorting it or shorting to a metal object
in the wall (grounding it).

Wires run close together for a long distance can "induce"
electricity in the other wire. Try using "shielded" wire.
This wire has foil around the wires like this...
http://www.indyav.com/product_images...2SC__17935.JPG


Sheilding is not usually required - but twisted pair cable is
DEFINITEY recommended. It eliminates "common mode" noise.