Everything Steve says about the Motorola HSN speakers is true with the following caution:

Many found at hamfests are 2 ohm speakers while amateur receivers and transceivers for the last 60 years have required 4-8 ohm speakers.

There is usually a marking on the magnet face indicating the impedance.  While I've modified several 2-ohm units to a higher impedance, it's more fun to watch the expression of the flea-market guys as you pull out a Phillips screwdriver and open case after case looking for 4 and 8 ohm ones.

73,

Kent  K9ZTV



On 4/18/2022 12:29 PM, inventor61 wrote:
For Sale:  matching pair of Motorola HSN6003B external speakers for K3 with
diversity mode.  These are the version of the classic Motorola
communications speaker, designed for use on police motorcycles.  Besides
being waterproof, they have superior acoustic characteristics ...
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