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DSP Presets
DSP presets for multichannel material
Multichannel audio signals can come from either
encoded data streams (such as Dolby Digital) or as
discrete channels from a DVD player. If you are using
Meridian SmartLink then all formats will reach the 861
as discrete channels. With suitable loudspeakers the
861 can upsample these to provide a more enjoyable
surround experience.
The 861 Reference Digital Surround Controller will
automatically select the right decoder algorithm and
present the same set of preset choices for all streams.
Note: Some presets are only available if there are four
surround speakers in the system.
There are four multichannel Music presets:
Discrete, PLIIx Mus6, THX Music, and Ambisonics B
format (discrete inputs only).
There are five multichannel Movie presets:
Cinema, PLIIx Mov6, THX, THX Surround EX, and
THX Ultra2 Cinema.
The multichannel Music presets all use the Music
speaker layout and the multichannel Movie presets all
use the 5.1 Movie speaker layout; see
Speaker layouts
,
page 5.
Cinema
The Cinema preset is recommended for listening
to multichannel movie soundtracks when no further
processing is required.
Discrete
The Discrete preset is similar to Cinema, except that it
uses the Music speaker layout and sets the LFE level
to -10dB.
•
•
Discrete and Cinema DSP preset
parameters
Parameter Options What it changes
2+2+2* Off, 5.1,
Side, 7.1
Allows you to specify
how DVD Audio
channels 3+4 should be
interpreted: Off ignores
them, 5.1 and 7.1 use
them for centre and
LFE, Side uses them
for the side speakers,
7.1 adds side speakers
to 5.1.
Surround† Surr. Rear,
Surr. Side,
Surr. All
Allows you to specify
which speakers the
surround channels
should be sent to in
a system with four
surrounds.
R Filter Off, 1kHz,
3kHz, 7kHz
The cutoff of high
frequencies from the
rear surrounds.
S Filter Off, 1kHz,
3kHz, 7kHz
The cutoff of high
frequencies from the
side surround.
LFE -28dB to 0dB The relative level of the
LFE bass channel.
* Discrete only.
† Cinema only.