🚀 go-pugleaf

I'm working on a paging module which "answers" a phone call as
soon as it arrives (before a "ring" in generated for the calling
party - quite confusing for some) and broadcasts the audio of the
caller on speakers around the building for a preset time (LS7210
digital delay - way cool).  The intent is that it can be used as
a pager, outgoing line, and incoming line in response to the page.

So far, it works beautifully feeding a Radio Shack amp/speaker
module.  (and if you call 317-463-3447 while I'm working on it,
you too will be a part of the testing...)

I haven't ever tried distributing a signal like this.  I've read
that I need to match my load (speakers) to my source (amp), but
I'd like to use a cheap standard audio amp (8 ohm) and cheap
little speakers (4 or 8 ohm).  I've seen speaker selectors with
matching circuits built in, and would like to make something
similar.  I'd like to keep it simple - resistors and transformers -
if I can.  I'd also like to be able to add more speakers and vary
the volume of each speaker (at the speaker  - parallel bus)
without redesigning much.

Any hints will be appreciated!

--kyler

P.S.  I had also thought of using phantom power to feed amps at
each location with power and audio.  It seems like this would be
way too prone to noise, though.  Also, the cost would be quite a
bit higher.