Re: [ARSCLIST] Cables- was Can 78s sound better than LPs?

[Mike Richter <mrichter@xxxxxxx>]

Scott Phillips wrote:
> It is important to note as well that the impedance of the loudspeaker
> varies with frequency as well, both because of the resonate mechanical /
> electrical frequency of the individual drivers as well as whatever the
> passive crossover is doing, if there is one. Therefore, if I remember
> correctly, if the source impedance of the amplifier remains pretty
> constant with frequency, then by simple math the amount of power the
> amplifier actually delivers to the load must vary with frequency as
> well.

Somewhat true, but taken into account in the design of a (quality) 
speaker system. In fact, the resistive load does not vary greatly, 
though the complex terms do. In good approximation, the amplifier is a 
zero-ohm resistive source; the cabling adds resistance and therefore 
reduces the damping factor. In my experience with audio system design, 
the speaker is designed for critical damping when connected to a 
zero-ohm load.

Mike
--
mrichter@xxxxxxx
http://www.mrichter.com/