Bose RoomMatch Installation Manual - Page 18

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Array Signal Processing
Digital signal processing (DSP) equipment is required for infrasonic protection, crossover, equalization, and protection limiting functions
for all RoomMatch array modules. The Bose PowerMatch™ PM8500 professional amplifier and Bose ControlSpace® ESP (both sold
separately) contain presets for all RoomMatch modules. When using other types of signal processing equipment, the following cross-
over filters are recommended:
Full-Range Module Applications (for use without subwoofers)
Driver Elements
Module LF
Butterworth
Module HF
Butterworth
Full-Range Module with Subwoofer Applications
Driver Elements
Subwoofer RMS215
Butterworth
Module LF
Butterworth
Module HF
Butterworth
Array Compensation EQ
The RoomMatch module EQ presets in ControlSpace ESP and PowerMatch are based on the single module frequency response. For
multiple-module arrays, an additional EQ stage is required to compensate for the mutual acoustic coupling of the woofers. A special
DSP filter network has been developed for RoomMatch modules to provide consistent tonal balance independent of the number of full-
range modules in the array. This filter allows the user to set the number of full-range modules and the total vertical angle of the array and
generate the following electrical responses:
Figure 14. RoomMatch™ Array EQ Electrical Response Graphs
Page 18
Installation and Safety Guidelines
High-Pass Filter
Type
Slope
24 dB/octave
24 dB/octave
High-Pass Filter
Type
Slope
12 dB/octave
24 dB/octave
24 dB/octave
Frequency
Type
50 Hz
Butterworth
580 Hz
none
Frequency
Type
40 Hz
Butterworth
80 Hz
Butterworth
580 Hz
none
Hz
Hz
pro.Bose.com
Low-Pass Filter
Slope
Frequency
24 dB/octave
510 Hz
none
none
Low-Pass Filter
Slope
Frequency
24 dB/octave
80 Hz
24 dB/octave
510 Hz
none
none