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6 . 5
6 . 5 . 1
The gain switch adjusts the input to 0 dB or +6 dB gain.
For situations where a wider range of gain control is needed, use either of these
recommended methods.
6 . 5 . 2
Recommended usage:
18
O p e r a t i n g C o n t r o l s - S u b w o o f e r
S e t t i n g t h e G a i n S w i t c h
0 dB (switch to left)
Use for the common situation where the subwoofer is floor-mounted and the
full-range loudspeaker is pole or stand mounted above it.
+6 dB (switch to right)
Use when more subwoofer level is needed, such as when both the full-range and
subwoofer are suspended.
1. Provide a separate signal feeds to the full-range and subwoofer, each feed having its
own level control. This is normally accomplished using separate auxiliary or matrix
outputs on a mixing console
2. Provide an external attenuator to the loudspeaker that needs less gain. This can be
a fixed resistive attenuator, ideal for permanent installations. Where frequent
adjustment may be needed, such as in a portable system, an adjustable level control
may be inserted into the signal line to the loudspeaker needing less gain. A 20k ohm
to 40k ohm potentiometer with an audio or log taper can provide the desired results.
S e t t i n g t h e P o l a r i t y
Normal (switch to left)
Use to provide normal integration with a full range loudspeaker that is either stacked
on top of or pole mounted to the subwoofer.
Invert (switch to right)
Use when the sound of the subwoofer and full-range loudspeaker do not integrate well,
meaning there is bass loss in the listening area. This is usually caused when the subwoofer
is located at a different distance to the listeners than the full-range loudspeaker or
because of destructive room reflections. Given the unpredictability of low frequency
response in a room, the Polarity setting may or may not improve the results. In some
cases, there may be a difference in the results, but not a better or worse result.
For the instructions in this section, refer to the
accompanying Figure.
These switches electronically configure the
subwoofer
for
use
loudspeaker depending on the subwoofer's
positioning
relative
loudspeaker.
NOTE: The recommendations given are
general guidelines and cannot address all
applications or loudspeaker configurations.
Use measurements and listening tests to
determine the best setting for a particular
situation.
with
a
full-range
to
the
full-range
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