Roland Groovebox MC-307 Reference Manual page 137

3. Set up so that MIDI clocks are transmitted from the
external MIDI sequencer.
For details on the setting, refer to the owner's manual for
your external MIDI sequencer.
Start synchronized playback.
4. Press the [PLAY] button of the external MIDI sequencer,
and synchronized playback will begin.
5. To stop synchronized playback, press [STOP] button on
the external sequencer.
* As required, set up to block transmission of playback
information from the external device to the MC-307. (Or, set
MIDI channels 1 to 7 and 10, corresponding to those used on
the MC-307, not to be used for data transmission.) Otherwise,
the MC-307 performs playback with playback information
from the external device.
For details, see the operation manual of the external MIDI
device.
* It is also possible to control playback/stop operations only
without synchronization with MIDI clocks transmitted from
the external MIDI sequencer. In this case, set Sync mode of the
MC-307 to "REMOTE."
Making playback on two units of the
MC-307 to be synchronized
Two MC-307 units can be connected to each other, and used
to play different patterns in synchronization. The playback
unit is referred to as "Master" and the unit to be
synchronized "Slave."
Set up the Master unit.
1. On the master unit (the MC-307 that will control the
timing), set the Local Tx Switch of all parts to "INT" (P.
126), and turn Sync Out "ON" (P. 120).
2. For all parts (including MUTE CTRL) of the pattern used
by the master device, set the Sequencer Output Assign
setting to "INT" (P. 23).
With these settings, the only messages transmitted from
MIDI OUT will be synchronization signals. This setting
block transmission of playback information and
operations of the knobs, the Arpeggiator and RPS to the
Slave side.
Set up the Slave unit.
3. On the slave unit (the MC-307 whose timing will be
controlled), set the Sync Mode to "SLAVE" (P. 119).
Chapter 7 Environment Configuration and
Perform synchronized playback.
4. Press [PLAY] button on the master unit, and the two MC-
307s will begin playback together.
5. To stop synchronized playback, press [STOP] button on
the master unit.
* If the two patterns being synchronized have a different time
signature or a different number of measures, the performance
will move apart even if synchronization is maintained. When
synchronizing in this way, it is recommended that you use
patterns that have the same time signature and number of
measures.
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