Section 2—Subwoofer Placement and Location
Unlike regular loudspeakers, subwoofers will often 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 option.
The driver can be facing you or be pointed along either wall. The low frequency sound waves emitted
by the ULW-10 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
excited, translating to a flatter response in most rooms. Often, one rather large peak in the subwoofer’s
operational frequency range will stand out with corner placement. For this, we've also provided the
ULW-10 with the ability to alter its response for your new environment with an onboard one band
parametric equalizer (SOS). As “boomy” bass is often the result of the largest untamed peak, we're
confident that you will find this feature an indispensable tool for shaping your subwoofer into the way
you'd like to hear it: flat, clean, and powerful. More on this in section 5...
2.1 Subwoofer Placement
The low frequencies played by your ULW-10 subwoofer tend to be non-directional due the extraordi-
narily 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 enveloping response. Factors that
can affect performance in this regard are rattles from shelves, walls, or other nearby objects, as well as
distorted output. If you are having issues with subwoofer localization, try to isolate any rattling or
buzzing objects, or place the sub in another corner of your room. If the sub's output is distorted, check
to see that you are not at the maximum sub level setting on your receiver or pre/pro. An overdriven
output can induce audible distortion. To resolve this problem, you may need to turn down the
subwoofer level on your processor and turn the gain level up on the subwoofer itself to compensate.
2.2 Subwoofer Location
Figure 2.1
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