[Motorola] Spectra speakers

[Coote, Jay]

Don,
I would not do it.  Audio transformers won't work either.
You could try a DC-powered monaural audio amplifier, maybe a kit.
Terminate each speaker in a load resistor, maybe 10 ohms and 5 watts.
Experiment with 1 k to 50 K resistors in series with the audio amp input
and the high side of each speaker termination resistor.  It's a basic
passive audio mixer followed by the amp.... it may work for you.

-----Original Message-----
From: motorola-bounces at mailman.qth.net
[mailto:motorola-bounces at mailman.qth.net] On Behalf Of d.stiver at att.net
Sent: Tuesday, January 15, 2008 06:52
To: motorola at mailman.qth.net
Subject: [Motorola] Spectra speakers

I have 3 mobil Spectras in my truck (900 MHZ, UHF, and VHF). Is there
any way that I can use one speaker for allthree radios? I am aware that
none of the speaker wires can be grounded witout damaging audio amps in
radios. Thanks Don K7LHR
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