Pooh Bear wrote:

2.83 volts is 1 watt into an 8 ohm load. For some strange
reason most speakers are 4 ohms but the manufacturers still
use that same 2.83 volts which translates to 2 watts, thus
improving their speakers rated sensitivity by 3 db.

It is not totally unfair, most poweramps do in my understanding deliver
the same output voltage in 4 as in 8 Ohms under normal, non-clipped use.
It could equally well be described as mispresentation of the facts to
not use the same voltage for both impedances.

Fairness or cheat gets to be a matter of exactly what wording they use
and whether sensitivity is described as a voltage or a power
sensitivity. That said, if it is a voltage sensitivity that is specified
then it should be _obvius_ that so is the case and what the implications
are.

Graham


Kind regards

Peter Larsen

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