[ForSale-Swap] Heil SA-1 Sound Powered Speaker

[Michael Raskin]

Heil SA-1 Sound Powered Speaker.  The SA-1 contains a high quality 5 Watt 
amplifier driving a 4" broadband speaker working into a ported cavity.  A 
variable equalization circuit is built into the amplifier allowing you to 
adjust the tonality of the received audio for maximum articulation. 
Requires 12 VDC @ 600 mA or can be used with internal batteries (not 
included).  Photos available if you're not familiar with the SA-1.  $30 plus 
shipping.

Mike, W4UM