Using Your Acoustimass 15 Speakers; For Realistic Home Theater Sound; Lfe Level Control; Bass Control - Bose Acoustimass Owner's Manual

Using Your Acoustimass

For realistic home theater sound

Figure 8
A Dolby Pro-Logic receiver with
the center mode set to WIDE
10
®
15 Speakers

LFE level control

The LFE level control on your Powered Acoustimass module increases or decreases the
relative level of low frequency effects on movie soundtracks. Use it to regulate the presence
of these underlying deep bass sounds. You may find it unnecessary to adjust this control. The
factory, or detent setting is appropriate for a majority of listening situations.

Bass control

The Bass control on your Powered Acoustimass module can help you customize your
listening room. Turning the control to the right will add bass to the sound in rooms that might
be characterized as too shrill. Turning down the control will "brighten" the listening room. As
with the LFE level control, you may find the factory setting to be completely appropriate for
your listening room.

Setting your Dolby Pro-Logic receiver

For video applications, we recommend the surround-sound center mode setting of your
receiver as WIDE (Figure 8). Instructions for this process vary, depending on the brand and
model of receiver you are using. Follow your receiver owner's guide for testing and adjusting
the balance of each speaker.

Setting your Dolby Digital receiver

Your Acoustimass 15 speakers are fully compatible with the output from Dolby Digital receiv-
ers. Integrated Signal Processing assures full bass reproduction for all channels regardless of
receiver settings. However, the table below suggests a set of recommended receiver settings.
The cube speakers are full-range, or LARGE speakers on the Digital screen menu. Turn the
subwoofer and the LFE (low frequency effects) ON. Set the crossover to the lowest number
possible, typically 80 Hz.
Speaker
Left and Right Front
Center
Left and Right Surround
Subwoofer
LFE (low frequency effects)
Note: The Acoustimass 15 speaker system incorporates an automatic protection circuit,
which guards against most kinds of damage from electrical stress or overload. This circuit
activates at high volume levels to reduce output, causing a slight decrease in volume. This is
normal operation and indicates that power input may be exceeding safe levels. Sustained
listening at these levels is not recommended.
October 22, 2001
Setting at receiver
Large
Large
Large
ON
ON (at maximum setting)
AM194452_06_V.pdf