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PWRspkr Amplified Loudspeaker for Improved Communication
in Noisy Environments


  • High power 15 watt RMS linear power amplifier minimizes distortion at high sound levels
  • Sharp bandpass filter with 300 Hz to 3.2 kHz pass band attenuates unneeded bass and treble sounds
  • Adjustable gain control
  • Power cable fitted with Powerpole® connectors
  • Plugs into radio's speaker or headphone jack
  • Ideal for use in truck or car for improved communication in noisy environment

Quality Declaration

This product has been tested to comply with Part 15 of the FCC rules for a Class B computer peripheral and digital device for use in the home and office. This testing is done to ensure the product does not generate RF interference.

Product designed, tested and used by ham radio operators onsite.

4.3" H x 5.5" W x 2.5" D
Power Requirements
9 to 16VDC
Current: 2A max w/ 13.8V supply
0.83 VRMS produces full output into 4 ohms (1 kHz signal, 13.8V supply)
Loudspeaker Driver
4 in. treated paper cone
4 ohm impedance
Rated Power: 20 watts
Power Amplifier - Integrated Circut
Class AB Linear BTL (bridged-tied-load) circuit
15 watts RMS audio output into 4 ohms when powered by 13.8V supply
Short circuit protected by shut down
Over-heat protected by shut down
Heat sink is the two PCB ground planes
Active four stage filter with gain
Frequency response is flat 300 to 3.2kHz
18 dB/octave high-pass at 300 Hz (-3 dB)
18 dB/octave low-pass at 3.2 kHz (-3 dB)
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user's manual
gpsmap 78 accessories


Package includes:
PWRspkr - Amplified Speaker
Tilt mounting bracket
6-ft. power cable with Powerpole connectors
1/8" Audio Cables, 6 ft.
Owner's Manual

west mountain radio

PWRspkr - Amplified Loudspeaker for Improved Communication in Noisy Enviroments

CLRspkr | Clear Spkeaker | PWRspkr | West Mountain Radio

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