placement “directs” most of the bass
output toward the center of the
listening room. Corner placement
effectively reduces the amount of
bass that leaks out to other rooms.
Less bass output will result if the
subwoofer is placed out in the
room, away from the walls (see
Figure 4, A
).
4. The larger the room, the greater the
demand for low-frequency acoustic
energy. The best type of room for
bass reproduction in a home theater
would be one moderate in size,
solidly constructed, with no
openings to other rooms.
While listening, shut the room’s
doors and windows (if practical).
It can make a surprising difference.
Note:
The BassCube subwoofer’s
are designed to operate sitting
on the floor. Do not place the
sub-woofer in shelving or
other cabinets.
LOW PASS
FREQUENCY (Hz)
(FROM LFE
OUTPUT)
60
75
130
160
95
•
60 Hz to 75 Hz:
For use with any
of the following Cambridge
SoundWorks speakers–
Ensemble
®
,
Ensemble II, Ensemble III, Tower™
,
Tower II, Tower III, Model Six™
.
Also, any other truly wide-range,
large speaker system.
Note for Ensemble owners:
The
BassCube
subwoofer is intended
to supplement, not replace the
separate subwoofers supplied with
these systems. Do not disconnect
your
Ensemble
woofers when
using the
BassCube
subwoofer.
•
75 Hz to 130 Hz:
For use with
smaller bookshelf-sized speaker
systems. Use this setting with the
Cambridge SoundWorks
Model
Seventeen
™ and
Ensemble IV
.
•
160 Hz:
Use this setting with
small main speakers or if you
are connecting the subwoofer to
the LFE output of a Dolby
Digital system.
Special note about line-level
subwoofer outputs
Many receivers and all Dolby
Digital (AC-3) processors feature
dedicated subwoofer outputs. Some
of these outputs are full-frequency
bandwidth. Others deliver a signal
which is “Bass Only”.
Before you adjust the output level of
the subwoofer, you should select an
appropriate setting for the Low Pass
Frequency control. The proper setting
depends on the bass “reach” of your
main speakers. This control behaves
the same whether you use the
Speaker Level or Line Level signal
inputs of the
BassCube
subwoofer.
Because there is a small output
level shift when you adjust this
control, it should be set first, followed
by the Subwoofer Level control.
Use the following guidelines to
choose the best setting.
Selecting Low Pass Frequency
Most subwoofer outputs on
conventional receivers (stereo or
Dolby Surround with Pro Logic)
deliver a full frequency range signal,
a mono version of stereo signal fed
to the main speakers.
BassCube
owners using this type of subwoofer
output should set the Low Pass
Frequency control as described in
the procedure above.
The second type of subwoofer
output sends a “Bass Only” signal
to the
BassCube
subwoofer. The
most common example is the Low
Frequency Effects (LFE) channel of a
Dolby Digital (AC-3) equipped
system. Set the Low Pass Frequency
control to
160 (FROM LFE OUT-
PUT)
with this type of subwoofer
output. Try a lower frequency
setting only if there is too much
bass output on non-Dolby Digital
(AC-3) program material.
It is possible to improve the
performance of your main speakers
by the use of optional Low Cut
Filters (see page 7).
5
