[Boatanchors] Speaker Question

[Harold Hairston]

Mike;

I use the MOTOROLA and their GE Counter-part every day. Have been doing so 
for years. Actually, the GE ones may reproduce better "Communications" 
quality audio.

Harold

----- Original Message ----- 
From: "Michael D. Harmon" <mharmon at att.net>
To: <boatanchors at mailman.qth.net>
Sent: Wednesday, December 31, 2008 1:00 Hanks
Subject: [Boatanchors] Speaker Question


>I have a bunch of surplus Motorola mobile speakers, both the old 
>metal-cased units and the newer Micor-type plastic-cased units.  According 
>to everything I've been able to find, all these speakers are rated at 4 
>ohms (actually 3.2 ohms).  These speakers are excellent voice reproducers, 
>and the intelligibility is far better than a lot of the aftermarket (i.e. 
>Radio Shack) so-called mobile extension speakers.  The question I have is 
>this:
>
> Most communications receivers (like my Heath SB-102 and National NC-300) 
> specify their audio output at 8 ohms.   They all use tube-type audio 
> output stages with a small output transformer.  Will it damage these 
> receivers to drive a  4-ohm load?  Of course the waveform is a voice 
> signal, so the average power output is pretty low (plus with Motorola 
> speakers you don't need much power to hear them).
>
> If I were working with a stereo system or a musical instrument amp, I'd 
> find a speaker to match the output.  However, I have these speakers, and 
> I'd like to use them if they won't hurt my gear.
>
> Thanks for the help.
> Mike, WB0LDJ
> mharmon at att dot net
> _______________________________________________
>