psr-500 audio

  1. rfgroup

    Amplified External Speaker for PSR-500

    I purchased a SP-180A 4" Amplified Mobile Speaker from Scannermaster hoping to be able to provide a customer with good loud audio for their car at highway speed. When I plugged it into the cigarette lighter, I got a low audible hum. I thought for sure when I plugged it into a radio, the...