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Hookup

If the subwoofer is being used with a passive crossover or

SmartSub Integrator, a balanced XLR interconnect cable is
connected from the unit’s subwoofer output to the
subwoofer’s

Normal Input

. If more than one subwoofer is

used, they are “daisy-chained” by connecting an additional
XLR interconnect cable from the

Normal Output

connector

of the first subwoofer to the

Normal Input

of the next

subwoofer.

If the Integrator is not being used, then an RCA

interconnect cable is connected from the processor’s
subwoofer output jack to the subwoofer’s

LFE Input

. If more

than one subwoofer is used, an additional cable is connected
from the

LFE Output

connector of the first subwoofer to the

LFE Input

of the next subwoofer.

The subwoofer’s power cord must be plugged into an AC

outlet and the power switch turned to the “on” position.

Setting the Surround Processor

Tell the processor that you have a subwoofer.

If you are using a Passive Crossover or the Integrator

then the surround processor should be set to deliver the left/
right channel bass to the main speaker channels by telling it
that the main speakers are full-range (even if they are not).

If you are not using a Passive Crossover or Integrator and

the main speakers are not able to reproduce deep bass, you
can tell the processor that the front speakers are “small” so
that the main channel bass is redirected to the subwoofer.

If you are using the Integrator set the subwoofer channel

level in the processor to the same level as the left and right
channels and use the Integrator to adjust the LFE level. If
you are not using the Integrator use the processor’s
subwoofer level setting to adjust the LFE level.

Control Settings

There are three adjustments which are made by using the

three buttons below the numeric readout. Use the Select
button to select which adjustment will be active, indicated by
which light is lighted. The setting of the active adjustment is
displayed in the readout for 10 seconds after any of the
buttons is pressed. Adjust the active setting by using the
Increase and Decrease buttons.

The

LFE Level

is functional only for the LFE input.

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o minimum

(OFF).

If you are using the LFE input then the subwoofer

level must be adjusted to achieve the proper balance with the
other speakers. It is usually more convenient to adjust the
subwoofer level with the processor’s subwoofer level control,
and in this case a good starting point for the level setting is
90. If the system’s processor cannot control subwoofer level,
then the subwoofer’s level adjustment is used. The level can
be adjusted “by ear” to achieve a pleasing balance so that the
low frequency sound effects are not too weak or too strong.

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The placement settings should be adjusted to correspond

to the placement of the subwoofer. Set the

Side Wall Distance

to the distance from the side of the subwoofer to the side
wall and the

Rear Wall Distance

to the distance from the rear

of the subwoofer to the rear wall. The distance is displayed
in meters, which is the distance in feet divided by 3.3. If a
distance is greater than maximum indication set the control
to maximum (OFF). If the subwoofer is placed in a cabinet
the settings should correspond to the room wall distances,
not the distances to internal cabinet walls. If the subwoofer
is recessed into the wall so the front is flush with the wall,
then the rear control should be set to it’s minimum (negative)
setting.

If the norm/auto switch is turned to the “On” position

the subwoofer is always on, ready to reproduce a signal. If the
switch is set to the “Auto” position, the subwoofer’s amplifier
will automatically turn on when it detects a signal to
reproduce and stay on for approximately 1/2 hour after a
signal.

The unit is equipped with a control input that will turn

the unit on when a DC voltage between 5 and 25 volts is
applied, if the Auto/On switch is set to the “Auto” position.

Pilot light

The pilot light on the back panel and the front of the

subwoofer glows green during normal operation. This green
light can be turned off if you desire by pressing both the
increase and decrease buttons simultaneously when the
numeric display is not on. The light can be turned back on in
the same way.

Auto shutdown

The subwoofer is equipped with an automatic shutdown

feature that will turn off the output of the subwoofer if the
drivers, amplifier or rear panel get too hot or if the line
voltage is too low. This can occur if a very high input level
lasts too long or if the subwoofer has insufficient ventilation.
If the automatic shutdown is activated, subwoofer output
will be interrupted and the light on the input panel will flash.
The unit will resume operation when conditions return to
safe levels. Here is a list of the light flash modes and the
conditions they indicate.

Green / Red

Hot drivers

Red long / Green short

Hot rear panel

Red / Yellow

Hot amplifier

Yellow blinking

Low line voltage

If the unit shuts down often, this indicates that you

should improve its ventilation, turn down the system’s
volume control, turn down the subwoofer’s level control or
add an additional subwoofer.

Setting up the Subwoofer