HTP-1 Installation and User Guide Release 1.8.1
Configure the Bass Manager
Quoting the Wikipedia article on bass management:
“
The fundamental principle of
bass management
(also called
LFE crossover
) in
content in the incoming signal, irrespective of channel,
should be directed only to loudspeakers capable of reproducing it, whether the latter are the
main system loudspeakers or one or more special low-frequency speakers (
…
The bass manager directs bass frequencies from
all
channels to one or more subwoofers,
channel. However, when there is no subwoofer, the bass
channel to the main speakers. This is the only time the
channel would
not
be sent to the subwoofer.
channel is not the "subwoofer channel".
”
The frequency at which this bass “redirection” is accomplished is called the “crossover” frequency. It is
typical to use a symmetric “fourth order Linkwitz-Riley” crossover. Wikipedia gives
The bass management system acknowledges
that many speakers cannot reproduce low
frequency sound. It requires a physically
large device to produce 30 Hz audio.
Subwoofers are optimized for this use. Since
low frequency sound is non-directional, the
bass manager collects all of the low
frequency energy to be reproduced by the
subwoofer.
HTP-1 includes a bass manager typical of
surround sound processors. It requires the
user to describe the low frequency
capabilities of each speaker. If you don’t
have specifications for your speakers, a basic
Dirac Live® calibration run will show the
useful range of your speakers. You can use
this to adjust the bass management cutoff
frequencies. Unless you really have “large”
full-range speakers, select “small” and set the
cutoff frequency to something within the
effective range of the speaker.
HTP-1 User Manual
Page 42
V1.8.1
Содержание HTP-1
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