Extron electronics SSP 7.1 User Manual page 22

Large — Bass management is off for that speaker. The full range of audio frequencies from
the audio source is fed through the output of each individual channel. This may be set in the
absence of a subwoofer. By default, front speakers are set to large.
When there is no subwoofer, all speakers set to Large (except the center channel) receive the
summed audio from the filtered low frequency signals of speakers set to Small.
None — This mode prevents any signal from being sent to that output channel. It is not an
option for front speakers.
One Small Speaker, Two Small Speakers, One Large Speaker, Two Large Speakers, or
None (Surround back speakers only) — This mode determines whether the audio output
channels for the back speaker(s) are passed to the left back and right back (in 7.1 setups) or
to the center back (in 6.1 setups).
If either of the one speaker options are chosen, the highest possible number of outputs is
6.1 speakers. In this case, the output is directed to the left back channel output.
If either of the two speaker options are chosen, the SSP 7.1 is able to output up to 7.1
channels. Source formats with discrete or matrix mixed 6.1 encoded channels output the
surround back channel signal equally to the left and right back channels. Dolby Pro Logic
IIx and DTS Neo:6 listening mode options output a stereo signal to the left and right back
channels.
NOTE: If the surround speakers have been disabled, the back speaker options are also
disabled.
By default, the back speaker is set to None, which prevents a signal from being output on
the back channel(s).
Subwoofer — This option allows the subwoofer to be enabled or disabled. When the
subwoofer is enabled, the signal contains filtered low frequency signals from speakers set
to Small in addition to the LFE signal from the source format. If the subwoofer is absent or
disabled, the LFE signal is mixed with the bass information of all speakers in the system that
are set to Large, except the center speaker.
NOTE: When the surround and back speakers are set to None, all multichannel input
signal formats are downmixed and output on all remaining channels.
In addition, in the absence of a center channel, mono signals are output equally
between the front left and front right channels. Multichannel sources are
downmixed to all remaining channels, but Mono to All and Stereo to All options
are disabled. Choosing Mono listening mode first downmixes the multichannel
source and outputs it to the front left and right channels equally as a dual mono
signal.
Crossover Frequency — The crossover frequency sets the boundary below which
the low frequency signals from designated output channels are incorporated into bass
management. Low frequency signals are only taken from speakers that have been set to
Small (see "Speaker Size Settings" on page
to the subwoofer (if present) or speakers that have been set to Large (except for the center
speakers) if a subwoofer is not present.
The crossover frequency can be adjusted within the range of 40 Hz to 250 Hz, with a default
setting of 100 Hz. Speakers set to Small
only signals above the set frequency.
15). The bass management signal is passed
(see "Speaker Size Settings" on page
SSP 7.1 • Setup
15) play
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