Biwiring with Nordost
 

John Phillips wrote:


I haven't estimated the inductance of an individual pair but the parallel
connection of so many probably explains why the quoted inductance finally
drops back to about 2/3 that of ordinary 12-gauge zip cable.

Does it work like that when all the live wires are on one side and all
the ground wires are on the other side of a flat cable?
Time to brush up on my electomagnetic theory.

--
Eiron.

Biwiring with Nordost
 

"John Phillips" wrote in message
...
On 2007-01-07, Eiron wrote:
... I'm not sure I believe the stated
inductance for such a widely spaced cable. Perhaps they fold it in two
while measuring the inductance. Here it is:

http://www.nordost.com/Cables/speake...lue-heaven.htm

Yes - it's a surprising construction. However although the individual
conductor pairs are very widely spaced (and therefore have high
inductance) it seems there are 36 pairs in parallel.

I haven't estimated the inductance of an individual pair but the parallel
connection of so many probably explains why the quoted inductance finally
drops back to about 2/3 that of ordinary 12-gauge zip cable.

If you really do need low inductance for a difficult loudspeaker load
then the DIY CAT5 cable approach is really quite effective. It does
result in quite a lot of capacitance so it must only be used with a
suitably stable amplifier.

**Indeed. The way I normally connect Nordost, is to connect each alternate
conductor to ground and hot. This reduces inductance significantly. Of
course, there are other ways to achieve an excellent result. RG-213/U works
for me. Cheap and VERY low inductance.


--
Trevor Wilson
www.rageaudio.com.au



--
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Biwiring with Nordost
 

On Tue, 9 Jan 2007 06:33:46 +1100, "Trevor Wilson"
wrote:

**Indeed. The way I normally connect Nordost, is to connect each alternate
conductor to ground and hot. This reduces inductance significantly. Of
course, there are other ways to achieve an excellent result. RG-213/U works
for me. Cheap and VERY low inductance.

Have a look at their site. Quite amusing. Here's a couple of
excerpts from their FAQ section.
http://www.nordost.com/faq/faq.cfm

Question:
Are the cables directional?

Answer:
Nordost cables are not directional when they are manufactured. However
once they have been used for 70 to 80 hours in one direction they will
sound better when they are hooked up and used in the original
direction of break in

Then, on the next page:

Question:
What direction should the arrows on the cable point?

Answer:
Unless otherwise noted on the packaging, speaker cables should be
connected with the directional arrows pointing to the loudspeakers.
Interconnect(signal) cables should be connected with the arrows
pointing in the direction of the signal flow. For example, from a
Tuner, VCR,CD or DVD player the arrows should go to the preamplifier
or amplifier. From the pre-amp the arrows should go into the
amplifier.

And plenty more.

Biwiring with Nordost
 

"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message
...
On Tue, 9 Jan 2007 06:33:46 +1100, "Trevor Wilson"
wrote:

**Indeed. The way I normally connect Nordost, is to connect each alternate
conductor to ground and hot. This reduces inductance significantly. Of
course, there are other ways to achieve an excellent result. RG-213/U
works
for me. Cheap and VERY low inductance.

Have a look at their site. Quite amusing. Here's a couple of
excerpts from their FAQ section.
http://www.nordost.com/faq/faq.cfm

Question:
Are the cables directional?

Answer:
Nordost cables are not directional when they are manufactured. However
once they have been used for 70 to 80 hours in one direction they will
sound better when they are hooked up and used in the original
direction of break in

Then, on the next page:

Question:
What direction should the arrows on the cable point?

Answer:
Unless otherwise noted on the packaging, speaker cables should be
connected with the directional arrows pointing to the loudspeakers.
Interconnect(signal) cables should be connected with the arrows
pointing in the direction of the signal flow. For example, from a
Tuner, VCR,CD or DVD player the arrows should go to the preamplifier
or amplifier. From the pre-amp the arrows should go into the
amplifier.

And plenty more.

**I'm sure there is. I never bother reading the hyperbole from a
manufacturer's site. I am ONLY interested in the technology and the numbers.
The science and the numbers tells me all I need to know about how a cable
will sound. And trust me: The technology and the numbers from Nordost
products is pretty good.


--
Trevor Wilson
www.rageaudio.com.au



--
Posted via a free Usenet account from http://www.teranews.com

Biwiring with Nordost
 

Trevor Wilson wrote:

**I'm sure there is. I never bother reading the hyperbole from a
manufacturer's site. I am ONLY interested in the technology and the numbers.
The science and the numbers tells me all I need to know about how a cable
will sound. And trust me: The technology and the numbers from Nordost
products is pretty good.

There are not many figures for DC resistance on the Nordost website,
and some of the other figures look dubious. Do you have some real numbers?

--
Eiron.

Biwiring with Nordost
 

On Tue, 9 Jan 2007 07:45:43 +1100, "Trevor Wilson"
wrote:

**I'm sure there is. I never bother reading the hyperbole from a
manufacturer's site. I am ONLY interested in the technology and the numbers.
The science and the numbers tells me all I need to know about how a cable
will sound. And trust me: The technology and the numbers from Nordost
products is pretty good.

I particularly liked the emphasis on "90% of the speed of light" etc.

What technology would you say is important in a speaker cable?

Biwiring with Nordost
 

On 2007-01-08, Eiron wrote:
John Phillips wrote:
I haven't estimated the inductance of an individual pair but the parallel
connection of so many probably explains why the quoted inductance finally
drops back to about 2/3 that of ordinary 12-gauge zip cable.

Does it work like that when all the live wires are on one side and all
the ground wires are on the other side of a flat cable?
Time to brush up on my electomagnetic theory.

I may possibly have been able to do that particular calculation mumble
years ago but I regret that parallel multiply coupled transmission lines
is too complex for me now without a lot of re-learning :-(.

--
John Phillips

Biwiring with Nordost
 

On Mon, 08 Jan 2007 21:01:42 +0000, Eiron wrote:

There are not many figures for DC resistance on the Nordost website,
and some of the other figures look dubious. Do you have some real numbers?

I don't see a lot of numbers in the reviews enthusing over this stuff.
I thought subjective was the name of the game?

Biwiring with Nordost
 

"Laurence Payne" lpayne1NOSPAM@dslDOTpipexDOTcom wrote in message
...
On Tue, 9 Jan 2007 07:45:43 +1100, "Trevor Wilson"
wrote:

**I'm sure there is. I never bother reading the hyperbole from a
manufacturer's site. I am ONLY interested in the technology and the
numbers.
The science and the numbers tells me all I need to know about how a cable
will sound. And trust me: The technology and the numbers from Nordost
products is pretty good.

I particularly liked the emphasis on "90% of the speed of light" etc.

What technology would you say is important in a speaker cable?

**The use of PTFE, the ribbon conductors and the fact that the conductors
can be arranged to provide low inductance.


--
Trevor Wilson
www.rageaudio.com.au




--
Posted via a free Usenet account from http://www.teranews.com

Biwiring with Nordost
 

"Eiron" wrote in message
...
Trevor Wilson wrote:

**I'm sure there is. I never bother reading the hyperbole from a
manufacturer's site. I am ONLY interested in the technology and the
numbers. The science and the numbers tells me all I need to know about
how a cable will sound. And trust me: The technology and the numbers from
Nordost products is pretty good.

There are not many figures for DC resistance on the Nordost website,
and some of the other figures look dubious. Do you have some real numbers?

**I measured some Nordost some time ago, but I have no idea where those
figures are today. Inductance, when properly configured, was about 20% that
of regular 'figure 8' (zip cable). The figures can be inferred, merely by
examining the construction of any given cable in any case. T'ain't rocket
science.


--
Trevor Wilson
www.rageaudio.com.au



--
Posted via a free Usenet account from http://www.teranews.com