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Old 22nd August 2010, 07:56 AM   #11
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Quote:
Originally Posted by stokessd View Post
One trick is to go buy some PVC tubing at Lowes or Home Depot etc, and slide a standard piece of wire inside it. It's not elegant, but particularly for prototyping it's hard to beat the ease and price.

Sheldon
This is indeed what is applied by OneThingAudio, at least on a (bass) panel I have at home and that was re-done by them.
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Old 22nd August 2010, 10:21 AM   #12
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I just use .20 ptfe
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Old 22nd August 2010, 02:00 PM   #13
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In general wire insulation is very conservatively rated. But we are talking about lots of Volts.
You might try test lead wire. Or you might be able to pull the insulated center conductor out of some co-ax cables.

One day at work we tested some intercom wire (sort of like CAT3) and it handled 1500V.
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Old 22nd August 2010, 04:25 PM   #14
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Stripped RG59.
If you prefer thinner ones: small diameter coax like RG174.
Just one more notice: @ 20 or even 5 kHz distance is as important as breakdown voltage.
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Old 5th November 2010, 10:27 PM   #15
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For information, "alpha wire" makes very thin high performance HT wire like this one: ALPHA WIRE|39X2215 WH005|WIRE, SILICONE, 15KV, 22AWG, 30 | Farnell United Kingdom
Apart from the price, it looks like an ideal cable (in my opinion). But really too expensive.

Thus, as suggested, I will certainly use standard test lead wire like this one: MC (MULTI CONTACT)|61.7605-22|WIRE, SILICON, RED, 0.50MM, 5M | Farnell United Kingdom
and add some tubing around it like this one: SILIKON ISOLIERSCHLAUCH 3 MM bei Mercateo günstig kaufen

Without tubing, it should be perfect for 1.5kV (treble panel of ESL57)

POMONA certainly makes good wires but hard to find in my country.
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Old 6th November 2010, 10:03 AM   #16
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I run each of my tweeters with about 25 feet of "mains" power extension cord. Kind of like a garden extension cord, 16 gauge, 3 wire.... you can use the nice green wire for bias (about 1200 v, in my case). The insulation is pretty thick. Black rubber. Maybe 7/16 diameter. Bought a big hunk of it at a rummage sale 25 years ago.

My sound level meter says the tweets play as loud as they ought to (and my spectrum analyzer says they play clear as could be) for an octave beyond my hearing.

I hope that puts things in perspective and provides a reality check.
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Old 7th November 2010, 05:24 PM   #17
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Originally Posted by DaveG View Post
This is really the one I should find: no compromise on performance, not too thick (<4mm for Quad 57 bass panel internal wiring) and affordable.
But whatever my efforts, I could not find any seller that ships to Europe (excl. UK) ! Anyone knows one ?
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Old 9th November 2010, 04:13 PM   #18
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Originally Posted by Fabien Lefebvre View Post
This is really the one I should find: no compromise on performance, not too thick (<4mm for Quad 57 bass panel internal wiring) and affordable.
But whatever my efforts, I could not find any seller that ships to Europe (excl. UK) ! Anyone knows one ?
I've got one: I just ordered the pomona wire from Mouser Electronics.
Thanks everyone for your suggestions.
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Old 15th November 2010, 09:53 PM   #19
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Originally Posted by Fabien Lefebvre View Post
I've got one: I just ordered the pomona wire from Mouser Electronics.
Thanks everyone for your suggestions.
I received my order from Mouser. I confirm this wire is an excellent choice.
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