Note
The CLRdsp is a dynamic, adaptive noise reduction unit and audio amplifier. It is engineered to improve the listening experience for both mobile and base station operations by filtering out fatiguing interference. The device is compact and can be mounted in convenient locations, such as under a station speaker. It uses patented algorithms to distinguish between voice or CW and repetitive background noise, providing a much cleaner audio signal.
Features
– Adaptive Noise Reduction: Automatically senses and attenuates atmospheric noise, hum, hiss, static, and ignition noise.
– Specialized Filtering: Effectively removes heterodynes (carrier whistles) by over 50 dB and handles transient sounds or sirens.
– Front Panel Controls: Includes dedicated knobs for Volume, Tone (bass/treble), and Filter level (DSP intensity).
– Versatile Audio I/O
SPKR LEVEL IN: For connection to standard transceiver speaker or headphone jacks.
LINE IN: Specifically for low-level sources like portable shortwave receivers.
LINE OUT: Provides filtered audio for digital recording via a computer.
– Headphone Jack: Front-mounted jack compatible with mono or stereo headphones (adjustable via internal jumper).
– RF Immunity: Contains internal filters and decoupling capacitors to reduce interference from transmitted radio signals.
– Visual Indicators: A "CLIP" LED turns green when powered and flashes if incoming audio levels are too high.
Specifications
– Audio Output Power: 11 watts RMS into 4 ohms @ 13.8 VDC
– Voltage Gain: 46 dB typical
– Audio Input: High impedance, 0.01 VAC
– Input Clipping Level… | 0.04 volts RMS
– Noise Reduction: Adaptive; single tone attenuation > 50 dB
Power Requirements: 9 to 16 VDC; 1.1A typical (13.8 VDC recommended)
Protection: Reverse polarity protection and internal 2A ATC fuse
