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BU Series Powered Subwoofers – Owner’s Manual
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INTRODUCTION
The Infinity BU Series Powered Subwoofers have been designed to enhance the bass frequencies
of any audio system. This subwoofer may be used with speakers of any size. Obviously, the
greatest bass enhancement will be achieved when the subwoofer is connected with speakers that
do not have the capability to create deep bass. This subwoofer may be used individually, or
combined with another BU Series subwoofer for even more impressive reproduction of bass
frequencies (i.e., one subwoofer near the satellite speakers and a second subwoofer behind the
primary listening area, or both subwoofers up front).
The BU Series subwoofers are self-powered systems utilizing a solid-state, low-frequency
amplifier driving a specially designed woofer mounted within a structurally rigid, tuned-port
enclosure.
UNPACKING THE SUBWOOFER
Check your subwoofer carefully. If it has been damaged in transit, report the damage
immediately by calling your dealer and/or the trucking firm that delivered it.
To prevent fire or shock hazard, DO NOT EXPOSE THIS SUBWOOFER SYSTEM TO RAIN
OR EXCESSIVE MOISTURE. To avoid electric shock, DO NOT OPEN THE SUBWOOFER!
There are no user serviceable parts inside. Observe all warnings and cautions.
A FEW SUGGESTIONS
We recommend that you not operate your speakers or subwoofer with the bass, treble and
loudness controls set to full boost. This will place undue strain on your electronics and speakers
and could damage them.
The volume control setting on your preamplifier or stereo receiver is not a specific indication of
the overall loudness level of the speakers. The only important consideration is the loudness
level at which the system can be played regardless of where the volume control is set.
Always turn down the volume control setting on your preamplifier or stereo when changing a
cassette or CD, or switching inputs to AM or FM operation. Excessively loud transients (clicks
or popping sounds) can damage the satellite speakers and possibly the subwoofer.
Whenever changing cables, pulling plugs, etc., ALWAYS TURN OFF ALL EQUIPMENT,
including the subwoofer. This prevents transients from entering the speakers and prevents
electrical energy from reaching you. Keep all connections out of the reach of children.