Cerwin-Vega CVHF-A18S Manual - Manual (Page 9)

5. troUbleSHooting
Cerwin-Vega! CVHF - Powered Subwoofers for Home
Symptoms Causes Solutions
Bass sounds distorted Amplifier is at maximum output
Receiver tone controls are set too high Lower volume or receiver level control
Set bass flat; use tone controls
sparingly
Distortion with volume control near
minimum Defective receiver or preamplifier, or
shorted speaker wires Repair defective receiver, preamplifier
or replace speaker wires
Distortion on music peaks or sound
effects Dynamic soundtrack (e.g., explosions) Turn down volume control to lower
overall range
Buzz, hum, or crackle when connecting
wires Connecting wires with power on causes
transient signal spikes Connect wires only when system power
is Off
Buzz or hum when system is On Grounding problem or ground loop Check receiver or preamplifier manual
for help in eliminating a ground loop
No sound after listening at high-levels Amplifier’s thermal protection has been
temporarily activated Lower subwoofer volume and allow
amplifier to cool down; sound should
resume automatically
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