Owner's Manual

Symptom
Action
Sounds distorted
Hum
See your dealer if you require service. Authorized PSB dealers are equipped to handle
almost all problems. You may locate your nearest PSB authorized dealer on-line at
www.psbspeakers.com. If the problem is not resolved, please contact us, providing the
model name, serial number, date of purchase, dealer name, and a full description of
the problem.
We appreciate your purchase, and hope this owner’s guide helps you enjoy the
exceptional performance that PSB speaker systems have to offer. We wish you many
years of enjoyable listening!
15
Lower volume if the subwoofer begins to sound distorted to
determine if playback at a lower level solves the problem. If a
slight reduction in level solves the problem, then the subwoofer
level was too high. If the distorted sound remains at a low level,
driver(s) may be damaged.
Hum that appears when using the subwoofer’s low level input(s)
is usually caused by using an inferior, damaged, exceptionally
long low level cable or cables routed near high current wiring/
appliances. Replace/shorten the low level cable connecting the
subwoofer to the source equipment (receiver or processor). Low
level cable runs of longer than 20 feet may require the use of a
line driver (not available from PSB).
Hum heard when using the subwoofer’s high level input(s) is
usually caused by an intermittent or missing positive or negative
connection. Ensure there is a good connection between all
speaker wires connecting the subwoofer and receiver/amplifier.
If the subwoofer high level connection is routed through a switch
box, ensure the box shorts the positive and negative
connections together when the subwoofer should be inactive.
Hum will result if the switch box floats the positive or negative
connection.
Decreasing the volume control of the subwoofer and increasing
the volume control of the receiver/processor/amplifier subwoofer
output can sometimes reduce hum to an acceptable level.