In article , Kalman Rubinson
wrote:
On Tue, 28 Oct 2003 17:41:53 +0000 (GMT), Jim Lesurf
wrote:

In article , Kalman
Rubinson wrote:
3. The so-called 80watt speaker is in series with the now 100watt
pair and any power disipated goes through both.

Not sure what you mean by the above. Can you clarify?

Just from your wiring.

The wiring was, I think, Steven's, not mine.

All current must go through the 80watt speaker which is in series with
the paralleled others.

Erm... Current is not power. They are quite distinct physical quantities,
albeit ones which have a specific relationship for a specific component.

The current will pass through the '80 watt' speaker, but this does not
necessarily mean that the 'power' passes though the speaker on its way to
the others. This is because the actual power is conveyed by the EM fields,
and the 80 Watt speaker has no way to know what electric potential
('voltage') is across any *other* loads in series with it. Hence it does
not actually experience the power being dissipated by the other units.

Thus, it now becomes the limiting power factor,

Afraid that, again, I'm not quite sure why you are saying this. Each
individual speaker unit has no awareness as such of what voltages or
currents or powers any *other* units experience. It only knows about the
potential between its own terminals, and the current that it then passes.

further stressed by the non-linear drive imposed on it by the others.

Are you talking about non-linear impedance here? if so, I'm unsure why. My
own comments on what Steven said were based upon things like frequency
dependence, and linear acoustic effects, not signal-level dependence.

I wish I could suggest a solution but I do not know your goals.

I assume that you mean Steven's goals. :-) My own recommendation to him
would be to avoid using dissimilar speakers in series.

Slainte,

Jim

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