I will run Romex wire to my subs as well as the speakers. Romex comes in 3 wires in the run, since it is used primarily for wiring inwall for electricity; 2 sheilded wires for hot and nuetral and one bare coper wire used as the ground.

Would it be hurtful to use the ground cable in the wire by grounding it for all speaker connections?

It shouldn't hurt anything, but then again, I can't see how it would be of any benefit to do it.

Just curious, why would you use Romex for speaker wire?? Surely there is wire that is easier to work with, looks better, and costs roughly the same (or maybe even less).

Most home speakers don't have a ground terminal (this doesn't apply to self powered speakers). The hot and neutral wires are insulated not shielded. For amplifier to speaker cables, I would cut the bare copper wire off at both ends.

personally i wouldnt use romex as speaker wire. especially when it is buried in a wall. its to easy to forget or if you sell your home it would be to easy for someone to hook something up to it and hurt themselves or their equipment. i would use speaker wire for the job. The cost would not be expensive.

i deal with stuff like this at work where people have run stuff and then i get to figure out what they did. if i purchased a home and decided to do some remod i would not want to scratch my head trying to figure out where the 120v is thats feeding the unkown piece of romex that i found in a wall. a speaker wire would be easy. "oh thats a speaker wire."

Easy, all the house electrical is in 1/2" metal conduit. And as for using Romex, we have plenty of the stuff left over.

I guess I should rephrase my question a bit; would a grounded wire runing alongside the speaker cable help at all to catch any inerfernce?

would a grounded wire runing alongside the speaker cable help at all to catch any inerfernce?


No.

would a grounded wire runing alongside the speaker cable help at all to catch any inerfernce

No. I believe from a capacitance point of view, you also do NOT want to ground it.

However, for amplifier power outputs, the signal is pretty hot, so interference will not be a big concern unless you have substantial wiring problems.

However, for amplifier power outputs, the signal is pretty hot,

Signal level has nothing to do with induced interference in an 8 Ohm circuit.

You're right, voltage is only a variable if you double cable somewhere, like say coiling it (which would be a bad idea). Thanks for catching my mistake!

You can coil 2 conductor speaker wire all you want. The 2 wires cancel the coil inductor effect.

Not when the coil is close to a power line and picks up noise (or else, balanced interconnect wouldn't be necessary, and unbalanced would be interference free).

Not when the coil is close to a power line and picks up noise

This thread is about a speaker circuit, with an impedance of ~8 Ohms.

Do you really think enough current can be induced into an 8 Ohm circuit to be audible?

Impedance....look it up.

Not when the coil is close to a power line and picks up noise (or else, balanced interconnect wouldn't be necessary, and unbalanced would be interference free).

When I was touring full time we used to always coil bundles of 12/4 speaker cable sometimes over 100 ft worth and lay it in the same trunk as our extra AC feeder cable was in. And never once did it cause any hums,buzz or runs. Now if we coiled AC cable ,which u dont do unless your a rookie, it could get very hot and trip our breakers. U should figure 8 AC cable.