User’s manual V1.0
10
9. Troubleshooting
NO POWER, NO LIGHTS, NO FAN
Confirm that the AC cord is fully seated and connected to a live outlet. Check the AC source by trying another device
such as a lamp. Check the FUSE on the back of the amplifier.
INTERFERENCE FROM CELL PHONES
Using a cell phone near the speaker system can induce noise. If this occurs, move the cell phone further away from
the speaker system.
BOTH CHANNELS PRODUCES DEEP BASS ONLY
Check the position of the CROSSOVER switch on the rear panel. Set the HF/LF switch to position 3 (full range).
AMPLIFIER SOUNDS DISTORTED
If the red CLIP LED is flashing, the amplifier is being played beyond its normal rated power. The circuitry will reduce
volume somewhat to prevent severe overdrive, but if the input signal is further increased, the limiter can be overrid-
den, with increased distortion.
If the speakers or speaker cables are shorted or defective, the amplifier may distort at lower-than-normal levels, with
increased flashing of the red CLIP LED. This should be checked by trying an alternate speaker and cable. If too
many speakers are connected to each channel (impedance below 2 ohms), the amp will overload more easily and
will probably run hot.
If the sound is distorted or garbled without flashing the red CLIP LED, the distortion is not occurring inside the ampli-
fier. Either the speaker is bad or the input signal is distorted.
Confirm that the speaker is OK by trying a different unit.
Input overload can occur if the amplifier Gain controls are set too low, and the input source is overdriven to compen-
sate Reduce the source volume until the distortion clears up, and increase amp Gain to reach the desired level. It is
generally desirable to keep the amp gains at or near their full, clockwise, position.
Check all input connections. Do not plug two different sources into the same channel. Use a mixer to blend sources.
NO SOUND, NO GREEN OR RED LED
Confirm that the Gain controls are turned up.
Confirm that the input cables are correctly installed at both ends. If using 1/4-inch speaker cables, do not confuse
with input cables.
Confirm that the source is active. If necessary, try another source, or connect another amplifier to the existing source.
