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-----Urspr=FCngliche Nachricht----- =

Von: "Marcel Birthelmer" <marcelb.lists@gmail.com>
An: "Microcontroller discussion list - Public." <piclist@mit.edu>
Gesendet: Sonntag, 03. September 2006 03:33
Betreff: Re: [EE] Audio output stage


> Any suggestions on speakers? I've scanned digikey, but all the ones in
> that frequency- and power range are rather bulky. What's the rule of
> thumb to use smaller speakers instead of one bigger one?
[Rest snipped]

As a rule of thumb the resonancy frequency of a loudspeakers goes down if y=
ou use more than one. For 2 Speakers fres(new)=3Dfres^1/2, for 3 spwakers f=
res^1/3 a.s.o.
That's the trick Bose uses for their broadband chassis'. You have to mount =
them on a common chassis.
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Kind regards

Enrico
OE1EQW

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