SYNTHESIS TECHNOLOGY
PAGE
15
MOTM-650 USER’S GUIDE
WWW.SYNTHTECH.COM
Now, change
VG1Alloc
to
Poly1
. This will cause the MOTM-650 to allocate voices
polyphonically. Since the MOTM-650 is set to 4 voices, it will allocate from a pool of all 4
voices. Even if voices 2 through 4 aren’t connected to anything, play some notes. Every note
press will cause the next voice to be allocated, as you will see on the
V1
-
V4
LEDs. With one
VCO connected, only 1 voice will be heard out of every 4 notes.
The MOTM-650 is currently set up for a single voice group. Go into the
Global Settings
menu and change the
Voice Group Type
to
2/2
(two groups, 2 voices per group). Escape
out to the top-level menu, and notice that
VoxGrp 2 Settings
is now a new menu option!
As with
VoxGrp 1
, change
VG2Alloc
to
Poly1
just like with
Voice Group 1
. Also set the
MIDI Channel
to a different channel (preferably one higher than it’s currently set).
Now press notes on the controller keyboard. Notice now that only voices 1 and 2 are active –
this is sending MIDI data to
Voice Group 1
. Change the keyboard controller to the same
MIDI channel as
Voice Group 2
, and play. Voices are allocated out of voices 3 and 4. The
voice grouping operation allows completely different behaviors, turning the MOTM-650 into
a dual 2 voice MIDI/CV converter, or a quad single voice MIDI/CV converter. Very powerful
and flexible!
The MOTM-650 has one very unique function – voice groups can be assigned to the same
MIDI Channel
. Change
Voice Group 1
’s channel to the same as
Voice Group 2
’s
channel. Play notes. Watch voice 1 & 3 turn on simultaneously, and 2 & 4 turn on
simultaneously.
Having both voice groups set to the same
MIDI Channel
is identical to sending
notes/controllers on two different channels – the single incoming note is being sent to both
voice groups.
One possible use for this is to have multiple VCOs on a single voice. Connect one VCO to
voice 1, and another to voice 3. Detune the second VCO to an octave below (or above), etc…
it’s a great way to get unique voices if a CV splitter isn’t available. Also consider that each
voice group can have different glide settings. Configuration of a modular system with this
voice group setup is only limited by the user’s imagination.
Now that the voice group concept has been covered, let’s explore all of the settings available
for each voice group. For each setting, a typical LCD display will be shown, then the
various options for that setting will be described in detail. Every voice group setting begins
with the letters
VG
, for Voice Group, and the number of the group selected –
1
,
2
,
3
, or
4
.
Here are the settings, in the order they appear as the
INC
button is pushed:
VG1
M
ID
I
Chan=1
The
MIDI Channel
setting selects the voice group’s MIDI channel.
Chan
refers to the
channel number, of course, and can be set to any channel from 1 to 16. The voice group will
respond to MIDI CCs, pitch bend, notes, and all other voice group functions on this channel.
As mentioned earlier, more than one voice group can be set to the same MIDI channel.
