Behringer MX9000 - Manual (Page 20)

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It can provide 24 extra B-inputs to the mix (S48 DOWN, S23 UP).
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For live applications try using MIX-B to feed a secondary set of speakers. These could be
sidefills, or even more spectacular, the rearward portion of a quadraphonic sound system.
There is no SOLO provision for MIX-B. However, you can audition it by selecting only MIX-B (S83) in the monitor
sourcing matrix.
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If MIX-B is assigned to the main mix (S48 DOWN), do not listen to MIX-B (S83) and the main mix
(S82) simultaneously. That way you’ll be monitoring MIX-B twice over, and what you hear
won’t correspond with what’s going down to tape.
6.3 Monitoring
Fig. 6.4: Monitoring
Though most of you will want to audition the main mix most of the time there are exceptions. These include
PFL/SOLO, and 2-TRACK PLAYBACK. The SOURCING matrix (S82 to S85, see fig. 6.4) allows you to
monitor the main mix, the MIX-B and two external sources marked 2-track and EXTERNAL. The master
meters follow whatever source is being auditioned. The meters won’t make much sense if more than one
source is selected!
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EXTERNAL could be “normalled” to a HiFi pre-amp, allowing you to monitor extra sources
such as vinyl, cassette, CD, etc.
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Altering what goes into the control room’s monitors does not affect the signal from the main
recording outputs. Just as well, or every time you wanted to do a quick SOLO during a mix,
you’d have to start again!