Re: Speaking of audiophools

On Wed, 28 Jun 2006 23:12:41 +0100, Eeyore
<rabbitsfriendsandrelations@xxxxxxxxxxxxxxxxxxxxxx> wrote:



Rich Grise wrote:

On Wed, 28 Jun 2006 22:18:02 +0200, Zak wrote:
Jim Thompson wrote:
For the audiophools with their assinine view of loudspeakers...
http://analog-innovations.com/SED/LoudspeakerModel.pdf
This model is courtesy of "analog", 2002.

And any cable resistance or reactance comes in series with Rvc, the
voice coil resistance.

I once got (from an audiophool, who got unhappy) rather expensive cable.
Thick conductors (about 5 mm round) but also a 3 cm distance between the
conductors (mostly air). Nice dark red color.

I wonder if the inductance could 'do' anything noticeable at say 5 KHz.
Not that I even tried to hear a difference.. I later made another
audiophool happy with them and went back to two different cheap cabels,
one thin and short, the other longer and fatter.


Everyone's talking about wire resistance - the thing the phools are after
is characteristic impedance, which is determined by conductor diameter,
spacing, and dielectric constant. It's quite irrelevant at frequencies
where the length of the transmission line is less than, say, 1/100 of a
wavelength at the frequency in question.

Skin effect @ 20kHz does start to influence the larger cable diameters used for
speakers.


Why is there all this discussion about cable resistance and crap? If you
pay more than a few cents a foot for your speaker cables, you're an idiot.

It's just that simple.

A few cents a foot won't buy you much !

Graham

18 Gauge zip cord ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.
.

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