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Old September 17th 06, 08:40 AM posted to uk.rec.audio
Andy Hewitt
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Posts: 31
Default Speaker Wire advise pls

Wally wrote:

Andy Hewitt wrote:

So, why are you using two runs of cable to each speaker?


Not sure I understand your question! Are you testing me, or do you not
understand the principle of biwiring?


To be honest, I don't think the reason that bi-wiring might be better has
ever been explained to me in a way that I can take on board (with what
limited knowledge of physics and electricity that I have). Seems to me that
the effect of having the short between each run at the amp rather than the
speaker is so minimal that it's not worth bothering with. So far as I can
see, the only tangible difference is the addition of a small amount of
resistance in the circuit where the straps were on the backs of the
speakers. Like, 0.05 ohms, maybe.

If I'm missing something, I'd be interested to hear about it.


No, it's nothing to do with resistance, it to do with the fact that each
speaker can be moving at different speeds and directions. From this
there is a chance that the woofer can send distortion up the cable and
interfere with the tweeter frequencies. You use a thick cable to the LF
to send raw power. The tweeter needs a cleaner signal, so you use a
thinner cable for that. By connecting the cables at source, and
separating them at the speaker, there is enough time to prevent the
interference.

On a proper bi-wirable speaker, you actually feed the crossover points
separately, so the signals don't actually mix. If you bridge the
connections, you turn it into an ordinary speaker.

I read an article about this in a pro magazine somewhere, but can't
remember the exact details now, but that was the general gist of it.

Of course whether you can hear the difference or not is a personal
preference.

--
Andy Hewitt
http://www.thehewitts.eclipse.co.uk/
http://web.mac.com/andrewhewitt1/