Bass Management - Solid State Logic AWS 900+ Owner's Manual

Console Operator's Guide

Bass Management

Selecting BASS produces a further layer of bass management options (see next page for options held under
CAL).
80H – Inserts a 7th order, 80Hz, low pass filter into the LFE monitor bus, to deal with listening to 5.1 material
that has a full range, unfiltered, LFE channel.
BMN – Turns on the Bass Management system. This is designed to extend the low frequency response of the
monitoring system, and to simulate the 5.1 monitoring systems in TV and domestic environments. It inserts 12dB
per octave, 80Hz high pass filters in the L, C, R, LS, RS monitor outputs, and feeds a mono sum of these five
outputs to an 80Hz, 24dB per octave, low pass filter, which is summed with the LFE monitor bus. Post this
summing point, the combined signals feed via a 10Hz subsonic high pass filter before reaching the subwoofer
monitor output. These are the default filter slopes. Internal links (see Appendix page A-17 for details) allow them
to be set to 12dB or 24dB per octave and to select whether or not the surround channels are included.
Note that this option is stored separately for each set of speaker outputs (like the level calibration), so it is
possible to have Bass Management enabled on one set of speakers and not on others.
LF0 – Normally, the LFE bus level is increased by 10dB post the main monitor level control, as this is a requirement
for DVD playback. If you are mixing for SACD, or any other format that requires unity gain on the LFE channel,
select LF0 to restore the LFE bus level to unity gain.
NEXT – selecting this produces a second layer of options:
A2B – Retains use of the Main 5.1 subwoofer, even when you switch to the ALT 5.1 loudspeaker selection.
BMA – Uses the Alt 5.1 subwoofer instead of the main subwoofer for bass management when MINI A is
selected and BMN is on.
BMB – Uses the Alt 5.1 subwoofer instead of the main subwoofer for bass management when MINI B is
selected and BMN is on.
RTRN – Returns you to the top layer of the MONITOR OPTIONS selection.
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AWS 900+ Owner's Manual
AFL/ MONI TOR
EXTA EXTB
PFL OPTI ONS
INS PFM SRA LRA
AFL/ MONI TOR
EXTA EXTB
PFL OPTI ONS
80H BMN LF0
AFL/ MONI TOR
EXTA EXTB
PFL OPTI ONS
A2B BMA BMB
METERS MI SC
CAL BASS
METERS MI SC
NEXT
METERS MI SC
RTRN
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