soft self-adhesive rubber bumpers with your
UFW-12 Subwoofer. These provide a safe alter-
native to the metal spikes, and will also absorb
any vibrations between the subwoofer and un-
derlying surface. The choice is
yours for preference and practi-
cality, but you'll find the results
to be very good either way.
Section 2—Subwoofer Placement
and Location
2.1 Subwoofer Placement
Unlike regular loudspeakers, subwoofers will of-
ten work best when placed in a corner, even if
located a few feet to the side and/or behind the
closest main speaker. Typically the front right
and left corners sound the most natural, though
rear corner placement is also an acceptable op-
tion. The driver can be facing you or be pointed
along either wall. The low frequency sound
waves emitted by the UFW-12 are quite long and
will therefore interact greatly with the walls of
your room. As a result, even small placement
adjustments can have a significant impact on the
sound you hear. A room corner will provide
maximum output at a given power level, and the
maximum number of room modes will be ex-
cited, translating to a flatter response in most
rooms. Often one rather large peak in the sub-
woofer’s operational frequency range will stand
out with corner placement,. For this we've also
provided the UFW-12 with the ability to alter its
response for your new environment with an on-
board 1 band parametric equalizer. As “boomy”
bass is often the result of the largest untamed
peak, we're confident that you will find this fea-
ture an indispensable tool for shaping your sub-
woofer into the way you'd like to hear it. Flat,
clean, and powerful. More on this in section 5.
2.2 Subwoofer Location
The low frequencies played by your UFW-12 sub-
woofer tend to be non-directional due the ex-
traordinarily long wavelengths involved. As a
result, regardless of where your subwoofer is
placed, it should not be easily localized, but
should instead produce a balanced and envelop-
ing response. Factors that can affect perform-
ance in this regard are rattles from shelves,
walls, or other nearby objects, as well as dis-
torted output. If you are having issues with sub-
woofer localization, try to isolate any rattling or
buzzing objects, or place the sub in another cor-
ner of your room. If the sub's output is dis-
torted, check to see that you are not at the
maximum sub level setting on your receiver or
pre/pro. An overdriven output can induce audi-
ble distortion. To resolve, you may need to turn
down the subwoofer level on your processor and
turn the gain level up on the subwoofer itself to
compensate.
Section 3—Connecting Your UFW-12
Subwoofer
NOTE: Please be sure your subwoofer is not
plugged in and the rest of your system is turned
off.
Figure 3.1
When making your connections, be sure to use a
high quality and reliable interconnect cable. It
should be shielded and long enough to do the
job, but not excessively long. Your subwoofer
cable is likely to be the longest interconnect in
your system.
The simplest and recommended connection be-
tween a home theater receiver or processor and
your UFW-12 Subwoofer is directly from the sub/
LFE output to the “LFE” input on the UFW-12.
Figure 2.1
