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VM200 User’s Guide
Inverting the Input Phase
“Phase” concerns the timing of two different signals. A pair of stereo
speakers can operate “in phase” or “out of phase.” If the drivers in
the left and right speakers move in and out at the same time, in per-
fect concert with one another, the speakers are “in phase.” If they
are out of sync, they are “out of phase.” Out-of-phase speakers tend
to produce a weak stereo image and low bass output.
Phase is often represented by this symbol:
∅.
On the VM200, you can invert the phase for channels 1–20. First you
access the
PHASE
function page, then press an
[EQ EDIT]
key to turn
phase inversion on or off. A light indicator on the display means
phase is normal (off) for that channel; a dark (highlighted) indicator
means phase is inverted (on).
You can use the phase inversion software switches to compensate for
balanced cables or microphones that may have been wired incor-
rectly, or at any time you wish to invert the phase of a channel to pre-
vent signal cancellation.
1.
Press the
[ROUTING/PHASE]
key repeatedly to display the
3:
∅
PHASE
function page.
The
[ROUTING/PHASE]
key and the
[EQ EDIT]
keys for all selectable
channels start to flash (indicating their availability).
The
3:
∅
PHASE
function page includes a 1-by-20 matrix that indi-
cates whether the phase is normal or reversed for each channel.
2.
Press a Page Select key to select the target channel layer,
then press the
[EQ EDIT]
key for any channel to reverse its
phase.
The
[EQ EDIT]
key lights up if you turn phase inversion on.
Even when channels are configured as stereo pairs, their phase
switches can be set independently.
3.
Press the
[EXIT]
key or the
[CHANNEL/METER]
key.
The VM200 displays the
CHANNEL EDIT
function page.
Indicates Phase is reversed.
Indicates phase is normal.