On Sun, 06 Jul 2003 at 15:34 GMT, AL wrote:

So I guess that would apply to running 4 speakers off a small amp.
I have a 88 watt 2 chann amp driving a pair off 3 1/2 door
speakers. I want to add a pair of 1' tweeters on the dash. I would
wire them the same way as above?

Al,

First off, are you familiar with crossovers? I found this
description of a crossover at www.Crutchfield.com (
http://tinyurl.com/g6po )

------- start -------
What can a crossover do for you?
A crossover is any device that limits the range of frequencies sent
to a speaker. Think of a crossover network as an audio traffic cop,
directing highs to your tweeters, midrange to your midwoofers and
low bass to your sub.

Without a crossover, a messy, sonic "traffic jam" results. Your
midrange and sub duplicate too many of the same frequencies and your
sub wastes time trying to put out high notes it wasn't meant to
handle. A "fatal pile-up" could also occur, with your tweets being
destroyed by some renegade tractor-trailer of a bass note thumping
along in the wrong audio lane.
------- end -------

If you use a crossover to send the lower frequencies to the 3 1/2
speaker and the higher frequencies to the tweeter, both the tweeter
and the 3 1/2 drivers will run at their impedance (normally 4 ohms).

On the other hand if the 3 1/2 is a full range speaker (it has a
tweeter in it) and you want to allow the high frequencies to go to
both the 3 1/2 and the new tweeter, you still want to use a
crossover for the tweeter as not to blow the little guy with a bass
note. What you will do is hook the tweeter's crossover up in
parallel with the 3 1/2 full range speaker. At this point the
impedance would be cut in half (normally 2 ohms).

Hope this helps!

Sam