9. Room placement of the subwoofer is the most critical
aspect of its installation. It will be necessary for you to try
various locations in your listening room before you choose the
final location. Some possible starting points include: behind
the right channel satellite speaker, along the back wall
between the satellites, along a side wall (but not too close to a
corner), or behind a couch or a chair.
In general, the closer the subwoofer is to walls anti-
corners, the greater the effect of low frequency enhancement.
Experiment with the Frequency and Volume controls in--
different locations until you are pleased with the result you
obtain from your particular application.
A WORDO.EADVICE
The lo_ Frequency rolloff and Volume controls may be set
anywhere within their rotation. However, it will be a most
unusual circumstance if you have to set the Volume control
completely clockwise. This may indicate an unbalanced
condition in your system (too much bass) or an especially large
room, or room placement may not be correct. Try several
other locations before concluding that the Volume control
must be set at maximum.
If the subwoofer is located so far from the listening area that
its effect is not as prominent as desired, try reversing the audio
signal polarity by sliding the Phase switch from NOM to REV.
OVERDRIVEPROTECTION
Automatic limiting circuitry helps prevent overdriving a
connected subwoofer by softly clipping the input signal if it
exceeds a predetermined threshold. Depending on the level,
you may or may not hear slight distortion on musical peaks.
This protection is completely automatic, with no user
adjustments. However, if you do hear distortion continuously
while playing music, the input signal level (feeding the BU-2)
may be too high and should be lowered. If this doesn't solve
the problem, verifi/the connections and check for proper
operation of other components in the audio chain.
A WORD ABOUTTONECONTROLS
The tone controls on your electronic components
(preamplifier, receiver, etc.) should be used with the utmost
discretion. Excessive boost can create severe power demands
on your power amplifier. Maximum bass boost can create a
demand for literally hundreds of watts in the bass region,
whereas, in the *flat" position, or with the tone controls
switched out of the system, your average listening level may be
impressively and realistically loud at less than 10 watts. The
remaining power capacity required is on reserve for power
peaks on sharp transients and powerful crescendos.
i
CAREOFYOURSUBWOOFER
Your Infinity subwoofer cabinet is finished with a heavy
duty, high quality vinyl which requires very little maintenance.
Keep the cabinet clean by dusting it occasionally with a damp
cloth or use a good quality furniture polish to maintain its
original luster. (When using aerosol products, always spray the
cloth, not the speaker, to prevent any of the product from'
drifting onto the electronics of the unit.)
FEEDBACK
If the bass seems boomy, or you notice a rumbling sound
when listening to record albums, the cause may be acoustic
feedback. This means that low frequency vibrations from your
speakers are regching the turntable. To help isolate the
turntable from these vibrations, place the turntable on a
heavy, solid support, as far away as possible from the
subwoofer. If you continue to experience difficulties after"
experimenting with placement, consult your Infinity dealer.
NOTE: CD players are also susceptible to acoustic
feedback and should be placed on solid supports to isolate
them acoustically. Another method to isolate the CD player is
to place it on four isolation feet available at your local dealer.
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