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CLRspkr ClearSpeech® DSP Noise Reduction Speaker



View Details | Restock Alert. The estimated return to stock date is June 30, 2024.

Hear the Difference

Unaltered CLRspkr
Multiple CW Stations
Unaltered CLRspkr
Weak Phone DX
Unaltered CLRspkr
CW with Heavy QRN

Compare to Competitors

Unaltered CLRspkr Competitor 1 Competitor 2

See how it works

Learn more about adaptive digital signal processing
See how the adaptive DSP noise reduction algorithms filter noise from a variety of sources


  • Amplified loudspeaker with ClearSpeech® adaptive DSP noise reduction for voice and CW
  • Recognizes intermittent nature of CW and allows it to pass noise free
  • Continuously variable adaptive filter noise reduction
  • Contains 4-in. loudspeaker with 7.5 watts RMS maximum amplifier
  • Volume control knob for adjustment of internal speaker sound level
  • Front mounted 1/8 - inch stereo output jack for powered speakers or 16 ohm (or higher) headphones
  • On-off switch with green indicator LED
  • LED flashes red to indicate digital overload clipping
  • Small, lightweight, with mounting bracket - ideal for mobile operation and home station
  • Powerpole® plugs into any 12V supply


Dimensions 4.3" H x 5.5" W x 2.5" D
Power Requirements 9 to 16 Vdc; 1.1A typical before onset of clipping
Audio Input High impedance, 0.01 VAC
Voltage Gain 46 dB
Audio Output Power 7.5 watts RMS maximum into 8 ohms @ 13.8VDC
Maximum Audio Ouput Voltage 7.75 Vrms
Input Clipping Level 0.04 volts RMS
Frequency Response (filter enabled) 300 Hz to 3400 Hz
Frequency Response (filter disabled) 300 Hz to 12000 Hz
Noise Reduction Characteristics Adaptive, single tone greater than 50 dB

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.


Powerpole® is a registered trademark of Anderson Power Products.
Powerpole® Connector Features & Benefits
  • Genderless Housings: Provide simplified assembly and minimize the number of components
  • Stackable Modular Housings: Available in four sizes to right size your connection need
  • Connection Versatility: Contacts for wire, PCB, or busbar all fit into the same housings
  • Low Resistance Connection: Silver or tin plated contacts inside housings that strongly force the contacts together
  • Color Coded Housings: Help ensure that connectors are assembled and mated correctly
  • Self Securing Design: Stainless steel springs create a robust force between the contacts that holds the connector in the mated condition, but allows it to be quickly disconnected.

Anderson Powerpole® Connectors and General Installation Tips

Powerpole® Connectors
  15A 30A 45A
Amps (UL) Per Pole 0 to 55 0 to 55 0 to 55
Volts (UL) Per Pole 600 600 600
Amps Continuous 15 30 45
Wire Gauge (AWG) 20 - 16 16 - 12 14 - 10
Polarized Housing
PDF Files
Data Sheet
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