4. Always remember that frequency response and output level are greatly influ-
enced by the subwoofer's placement. A movement
of
even a foot
or
two can
dramatically change your system's response characteristics. You should experi-
ment with placement in your particular listening room in order to achieve the
highest performance from your subwoofer.
5. Your subwoofer contains a powerful amplifier inside its cabinetry. When plac-
ing the subwoofer into a built-in cabinet, please be sure it receives a clear flow
of
cooling air.
If
your subwoofer is to be located in a closed-back cabinet, be
sure to put some ventilation holes in the cabinet back behind the subwoofer's
back panel.
Powering
Up
Your
Subwoofer
Your subwoofer contains a built-in, active powered subwoofer section as well as
an electronic crossover and so each subwoofer must be plugged into an electrical
socket
of
the appropriate voltage (as indicated on the back
of
your unit) using the
plug on the end
of
the black cord attached to the electronics module on the back
of
the loudspeaker. The subwoofer has a special circuit which automatically turns the
powered subwoofer section on when a signal is fed to the loudspeaker and does not
require an on-off switch. The red LED on the back panel will light up when a signal
is sensed and the amplifier turns on. It will automatically
tum
off
a little while after
the signal is discontinued. -
The ProSub 600 has a special circuit which automatically turns the powered
subwoofer section on when a signal is fed to the loudspeaker and does not require an
on/off switch. We suggest plugging the ProSub 60 into a circuit which
is
on all the
time and not into a switched outlet. When the ProSub 60 is plugged into a circuit and
receives AC current, initially you will hear a relatively loud pop which is completely
normal as the system first activates itself to stand-by mode. Then, when a program
signal is fed to the speaker, it will fully activate itself with a lower level pop which is
normal.
If
you unplug the speaker
or
tum
off
the AC current going to it, it will reac-
tivate itself with a pop when
AC
current is restored, which is normal.
Please note that after the cessation
of
a signal, it may take up to an hour for the
amplifier to actually turn
off
from active to standby mode. It can also take up to an
hour for the LED to tum off.
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