Boss Audio Systems DR-670 ユーザーズマニュアル

If you find the DR-670 is not operating correctly, check the items listed below.
If the DR-670 still does not work properly after you check these points, consult your local Roland 
Service or your dealer.

❏ Is the volume turned down (p. 18)?
❏ Is the output part set to “DRUM” or “BASS” 

❏ Is the instrument’s level set to “0” (p. 80)?
❏ Have you selected a pattern or song 

containing no performance data?

❏ Are you playing too many sounds 

simultaneously?
The DR-670 has a maximum polyphony of 
20 sounds (voices). Some instruments use 
two voices each time they are played, so 
using such instruments results in reducing 
polyphony to fewer than 20 voices.
With some kinds of patterns, you can reduce 
the number of voices that sound 
simultaneously by setting the Assign Type 
to MONO. This would be effective, for 
example, in a pattern where a lengthy 
cymbal sound is triggered on every beat. 

❏ Could there be a mistake in the Assign Type 

❏ Could there be a mistake in the Flam 

❏ Are you trying to play a roll or flam with a 

bass part?

❏ Is “MIDI” selected in Sync mode (p. 87)?
❏ Have you selected a pattern or song 

containing no performance data?