Datasat RS20i - 4.7.3 Bass Management Theory

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RS20iInstallationandOperatingGuide
Page 83
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RS20i Installation & Operating Guide Document # 9301H52900 Ver. 1.02
 Large – (default) select this option if the Top speaker can handle all frequencies.
 Small – A high pass filter is applied to the Top speaker channel. Adjust the high pass frequency
and slope as needed.
 Cross to L/R/Ls/Rs – The Top speaker will be crossed with the Left Front, Right Front, Left
Surround, and Right Surround speakers. In order to use this option, the L, R, Ls, and Rs
speakers should be defined as Large. If not, an error message will appear on the screen.
All speaker configuration options are described in text next to the speaker. This completes the bass
management setup using no subwoofers.
4.7.3 Bass Management Theory
Bass management balances the bass portion of the audio system based on the speaker configuration.
Sub-bass configurations vary from none up to 4 subwoofers.
4.7.3.1 Crossed Speakers
Each channel may be combined with the LFE channel in order to extend the low range beyond what can
be heard from the channel’s speaker. The software allows you to set crossover filter frequency and slope
to best match the speaker(s). The high pass and low pass filters range from 31Hz to 160Hz, and use
either 12dB/octave or 24dB/octave.
The figure below illustrates how the left channel input may be divided between the left channel and the
LFE channel. Each channel works in a similar fashion. The high pass filter can optionally be bypassed.
Figure 52. Dividing the Left Channel
There is one configuration for each of the channel pairs, and a separate configuration for the Center, High
Center, and Top channels. Individual configurations can be made for the following speakers or speaker
pairs:
 Left Front, Right Front (L/R)
 Left Wide Front and Right Wide Front (Lw/Rw)
 Center Speaker (C)
 Left Surround and Right Surround (Ls/Rs)
 Left Back Surround and Right Back Surround (Lb/Rb)
 High Left Front and High Right Front (HL/HR)
 High Center (HC)
 High Left Surround and High Right Surround (HLs/HRs)
 Top (T)