Francisco Jose Montilla wrote:
> I meant (sorry, english isn't my native language) that
> what excite the headphone transducers is a variable (AC) electrical
> signal. I don't have the mathematical demonstration handy, but if you
go
> in a little deeper, you'll notice that with higher loads (i.e.
> impedances) peak voltage rises. Those equations assume a constant
(i.e.
> DC) voltage.
The voltage across the load will increase in proportion to the impedance if
it is fed by a current source. Most amplifiers act as (effectively) VOLTAGE
sources, in which case the current in the load falls as the impedance rises.
> My doubt is, if a 200 Ohm headphones with higher
> sensitivity than a 32 Ohm headphones <snip> which will drain more
battery.
> I'd bet the 200 Ohm, but am not sure...
> I'd try to reproduce the equation development to prove the
> voltage raise.
Good luck ! I'll be glad to see Herr Ohms' outdated law exposed for the
fraud that it is :-)
simon
-----------------------------------------------------------------
To stop getting this list send a message containing just the word
"unsubscribe" to [EMAIL PROTECTED]
