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In Reply to: Re: 2 or 4 conductor speaker cables? posted by Q&A on September 16, 2005 at 11:28:16:
Since they are for your rear surround speakers, the quads should be better for long runs...
Follow Ups:
I'm not sure if a star-quad wired cable that uses PVC insulation is such a good idea. The typical PVC insulated 4-conductor in-wall speaker cable might not do so well if wired star-quad since I believe there is increased dielectric effect with a star-quad geometry, so a high performance PE (FEP and Teflon being more ideal) is even more important for star-quad than for a twisted pair. I'm open-minded to being shown wrong about this opine :-)
Good point! Iīd guess the higher the capacitance, the better dielectric is always needed, regardless the reduction in resistance.
I didnīt know the cable had PVC insulation. Thereīs no mention in the on-line catalog. Well, just because of that I should have figured...On the other hand, another thing concerning star-quads and PVC:
AS the characteristic PVC tonal colourations are most noticed in the high frequency "noisy" sounds that become hashy, such as sibillants, whispers, cymbals, a violinīs arc rubbing the strings etc, the quads may gain a litlle here over the twisted pair. The former may provide an extra low octave, but this at the cost of some top-end where those noisy sounds generally are, while the latter sounds equally distributed over the audio range, where the same sounds get more pronounced.
This means that for the budget, star-quads may suffer less with PVC. This is just my subjective opinion, of course, also open to debate :)
A twisted pair PVC cable has enough dielectric effect, adding more is only going to make a bad thing worse, IMHO.A typical 4-conductor in-wall cable is usually wired side-by-side as a bi-wire cable, and as a side-by-side dual run 2-channel cable (which is not a good thing in terms of crosstalk). I would go with a twisted pair PVC cable if wanting to save money. Do no harm (or less harm) is the key, here.
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