Does gauge of speaker cables matter?

Yes, gauge does make a difference -- just like size makes a difference, I suppose. However, beyond some gauge/size, it's not meaningful. For longer runs of speaker cable, it is necessary to use thicker wire (smaller gauge number) to ensure that the audio/electrical signal is transmitted as accurately as possible. Now, at what point does it NOT matter much? For front and center speakers in a high-quality audio system, I would not personally use anything smaller than 12 gauge. I use the following as a rough criteria: 1) speaker cable runs of 8 feet or less: 14 gauge is fine 2) speaker cable runs of 8-12 feet: 12 gauge 3) speaker cable runs of more than 12 feet: 9 gauge. However, for rear or side surround speakers, where audio quality is less critical, Monster Cable says that 12 gauge is sufficient for runs up to about 50 feet. I have 2 runs of about 35 feet under my living room (to power the rear surrounds), and I use a 12 gauge Monster Cable wire that works fine.

David, a simple rule of thumb is that doubling the size of the conductore takes you down three wire gauge sizes. In other words, two 16 gauge wires run in parallel = 13 gauge. In order to go measurably heavier than this, you would need four 16 gauge wires. Since two of the 16's equals 13 gauge, we are in effect doubling that amount again ( 2 + 2 ) to come up with 10 gauge. This is a generic rule of thumb. As to specific wire gauges for individual drivers, it is sometimes not the actual gauge that matters most but the materials used and the geometry of the overall design. While a larger gauge does offer less resistance which is very critical on a real long run, heavier wires typically tend to roll-off or smear high frequency information. Running heavy wires like this side by side ala standard Monster type zip cable will result in a MEASURABLE roll of of upper mid and treble output. That is why many manufacturers have gone to using several very small gauge wires routed in parallel. Kimber, Audioquest, Axon, YBA, etc.. all do this with individually insulated cables in various geometries. These are designed to produce the flattest and widest bandwidth carrier that they can. Of course there are those that go the opposite route like Goertz, Analysis Plus, etc... that use different geometries and try to give the most surface area possible. Some will say that there is a difference in solid and stranded wire and i am one of those folks. In MOST cases, i prefer to use solid wire whenever possible. Your question touches upon one of the most volatile subjects around though, so expect to get some answers that will contradict each other. For more info about speaker cables, take a look at what Nelson Pass had to say when he took measurements of several older designs. You can find this detailed testing on the Pass Labs website listed under "articles". Hope this helps. Sean >

Does anyone feel a double run of 12 gauge to the woofers and a single run of 11 gauge to the tweeters would be worth the expense and effort?

That would all depend on what frequency range the woofer covers, what specific wires were used and how you configured it. If you want specific answers, you need to provide more specific info. Sean >