Sound Performance Lab MixDreamXP Model 2591 - Manual (Page 11)

MixDream XP 11
Control Elements
GND Lift Switch (Rear Panel)
The GND Lift switch separates internal ground from chassis
ground. The switch can be activated to eliminate ground loop
humming which may occur if the MixDreamXP is connected
to units with a different ground potential. The switch should
normally be in the GND position to maintain the shielding effect
of the metal housing.
Summing
Tracks destined for analog summing are routed from the DAW
to the MixDreamXP via A/D converters. Identical converters are
ideal to exclude level and sound differences.
Although you may often wish to sum more than 16 tracks, a
general recommendation to reduce track numbers is to route
those tracks to a common output bus of the sequencing program
which are not played back simultaneously in your arrangement.
This way you avoid digital summing and your production bene-
fits from the full potential of 100% analog summing.
With mono signals one should switch these to mono mode
to confine them to single D/A converter, thereby avoiding the
waste of having to use a D/A pair for one mono track (see „Mono
Switches“ on page 10). IMPORTANT: In the DAW such signals
must be panned hard left or right.
Summing of Subgroups
To reduce track numbers, there are two other options besides
the above mentioned „Summing“ tip:
Well, you could buy additional MixDreamXP (which we confess
would make us happy—and we‘re sure would not disappoint
you) or sum your grouped tracks with the MixDreamXP itself.
For example, if you‘ve done a chorus backup in 16 solo tracks,
you can adjust your panning in the DAW and the MixDreamXP
sums a stereo mix which is recorded again—the sound benefits
of analog summing are larger than the disadvantage of a further
A/D-D/A conversion.
GND LIFT
Applications and Modes of Operation