On Sun, 07 Oct 2007 10:52:54 -0700, ChairmanOfTheBored
wrote:

On Sun, 07 Oct 2007 14:40:56 +0100, Eeyore
wrote:



ChairmanOfTheBored wrote:

Eeyore wrote:
ChairmanOfTheBored wrote:
Eeyore wrote:
PhattyMo wrote:

They have MICRO-farads at best.

I'd guess it's more like pico-farads.

I think it's usually specified in nanofarads actually. It's still farads though,
not ohms.

Graham

It is IMPEDANCE, dumb ****.

Guess what the signifier is. OHMS!

Piezo tweeters are not rated in OHMS.


No, but they present OHMS of impedance to an AC signal source, dip****.

Mainly REACTIVE ones not RESISTIVE.


Still Ohms, nonetheless, chump.

Some speaker cables can have significant amounts of inductance, 10KHz
and up maybe. But the inductance is reactive, namely has a 90 degree
phase shift of voltage drop compared to resistance, so had much less
effect on speaker output.

With an 8 ohm resistive speaker load, 4 ohms of cable resistance drops
volume by almost 4 dB. 4 ohms of reactance only loses about 1 dB.

John