[mythtv-users] New house - any advise?
Billy Macdonald
billymacdonald at gmail.com
Wed Jan 17 06:13:54 UTC 2007
On 1/16/07, David Brodbeck <gull at gull.us> wrote:
> Chris Ribe wrote:
> > Veering off topic here, but this sound like a really questionable
> > idea. CAT5 is cheaper than speaker wire because copper is expensive,
> > and CAT5 doesn't contain much copper. It just isn't designed for a
> > high current application like driving speakers.
>
> It depends on how long the run is. CAT5 has a resistance of about 3
> ohms per 100 feet -- which means 6 ohms for a pair. If the run is only
> 50 feet or so, I think it'll work fine. If it's more than that, the
> loss of volume may get excessive.
>
Remember your physics. Two conductors in parallel will have less
resistance than the lowest resistance of the pair. Two 3ohm wires in
parallel will have a resistance of 1.5ohms.
Unless I'm misunderstanding what was being suggested about pairing the wires.
I'm not sure if I'm advocating using cat5 or not. Personally I would
probably use speaker wire myself unless it's a low wattage second zone
type speaker.
Billy
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