4
West Mountain Radio
Operating Manual
A 1-amp 12-volt, wall mount power supply (wall wart) may be
used to power the CLRspkr. The plug required is 5mm OD
with a 2.1 mm pin, and the pin is positive. West Mountain
Radio carries an appropriate accessory power supply for 117
VAC.
Volume Control:
The desired volume level from the loudspeaker may be
controlled with the volume knob on the front of the CLRspkr
unit. Headphone volume is controlled with the volume control
of the radio.
NOTE
: If using headphones only, turn down the
volume knob on the CLRspkr completely.
Operating
CLRspkr is easy to operate. Turn the Volume knob to power ON.
The LED will start RED and turn to GREEN when the speaker is
properly operating. Adjust the radio’s output volume control to
produce a comfortable listening level. Use the Filter control to adjust
the desired amount of noise reduction The noise will reduce, leaving
the voice/CW signal at a similar volume.
If the incoming audio level is too high the LED will flash orange in
color. Reduce the input just below flashing. Clipping disrupts the
noise reduction circuit.
The front panel “Filtering’ control allows continuous DSP level
adjustment. When turned fully counterclockwise, the DSP is
bypassed. When turned fully clockwise, maximum DSP filtering
is realized. Maximum filtering is rarely needed during use. A
recommended setting is at the 10 - 12 o’clock position for typical HF
channel conditions.
