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Using Your Acoustimass

For realistic home theater sound

Figure 8

A Dolby Pro-Logic receiver with

the center mode set to WIDE

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

ON (at maximum setting)

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