Hi Matt!
 SW> 1. Is there a limit to how many speakers you can run off one
 SW> amp ?
->MP>There's also the interaction you'll get between multiple drivers an
->MP> their crossovers; the effects may be undesireable.
Anytime you use more than one speaker in the same band, you can have
interaction both complementary and  detremental due to speakers
differences. Also, remember that a speaker is also a microphone and can
cause interaction that way.
-> KP> Loading effects on the amplifiers, causing clipping?
-> If it's loaded too low, definitely.
-> KP> Or do you mean that the crossovers in different speakers
-> connected KP> in parallel can interact to change their individual
-> turnover KP> frequencies and slopes?
-> Not that, so much as speakers wired in series.  If you're going to
-> add multiple speakers (as opposed to drivers) beyond the point where
-> wiring them in parallel would produce too low a load, then you must
-> use a parallel/series configuration.
-> This works fairly well with multiple DRIVERS (who remembers the Sweet
->Sixteen? :)
Ah yes, the model for most of the Bose line now.Take a pile of cheep 4"
drivers in put them in a boxx.
-> but the crossovers can do really weird things if you try it with
-> multiple SPEAKERS (depending somewhat on speaker and crossover of
-> course).
Since we've talked about a pile of speakers on one amp, a non-audiophile
solution to haning a lot of speakers off of one amp is the 70 volt
distribution system, using transformers at each speaker that can be
tapped to a number of volume levels and you can keep tieing them on
until you run out of amp to push them with.
 I don't advise this for audiophile usage though, since there is
problems with the sound quality, most notably the damping factor
(tightness in the bass) can be no more than 1 which means exceptionally
sloppy bass.
 Bonnie *:>
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