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Subwoofer
Because of their long wavelengths, low bass frequencies are critically dependent on room
placement to avoid bass-robbing standing waves or null points. Sometimes moving a
subwoofer a few inches makes the difference between thin, weak bass and room shaking,
foundation-rattling bass. One of the most reliable methods to correctly position your
subwoofer is to first hook it up and place it next to your favorite listening position.
While it is playing music or a movie with strong bass in it, slowly walk around the various
room locations where the sub could be located. You should be able to find a place where you
hear balanced bass without excessive boominess. Once you have found this optimum loca-
tion, simply move the subwoofer there. If you change your listening position, you should
repeat this procedure. If you are unable to place the sub where it sounds best, you might
improve its sound by turning the sub’s cabinet to one side or the other. The AVC-2500 has
two subwoofer outputs, in case you prefer two smaller subs in place of one large sub, or if
you have an insatiable (but certainly understandable) desire for intense bass. However note
that positioning two subs for ideal response is more challenging than positioning one, be-
cause they will interact with each other as well as with your room.