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3.1 Biamping
Those who are not familiar with Bose
products may need to understand
that Bose handles the biamping of its
loudspeaker products in a different
manner than the traditional industry
practice. Standard industry practice
is to split the audio bandwidth into two
discrete sections divided by 2nd-
order (12-dB/octave) or steeper filters
(see Figure 3.12).
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dB
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Fig. 3.12 Traditional Industry Practice for Biamping
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1000
Frequency (Hz)
Fig. 3.13 Typical Bose Full-
Range Response
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Frequency (Hz)
Fig. 3.15 Bose 502B
Subwoofer Response
Page 12
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Frequency (Hz)
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The way Bose uses the biamp desig-
nation does not limit the bandwidth
passing to the upper (high pass) sec-
tion; however, it does lower the level
of bass equalization employed (see
Figures 3.13 and 3.14). The additional
bass energy required is then derived
from the 502B subwoofer( see Fig-
ures 3.25 and 3.16).
10000
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dB
0
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1000
Frequency (Hz)
Fig. 3.14 Typical Bose
Biamplified Response
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dB
0
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1000
Frequency (Hz)
Fig. 3.16 Typical Bose
Response Using 502B for Bass
Supplement
P.I.P.–BEQ
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