Boss BR-1600CD Basic Operation Gude page 52

Mixing audio from various tracks onto a stereo track (Mix Down)
5
Move the cursor to the track to which
chorus, delay, or doubling is to be
applied.
You can also move directly to a track by pressing the
corresponding track button.
fig.07-52ad
You can only select one chorus, delay, or doubling effect. Different types of chorus, delay, and doubling effects cannot
be used together.
Once all the necessary settings have been made, you will be able to start recording (bouncing).
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6
While listening to the playback from
the selected track, use the TIME/
VALUE dial to adjust the send level
until you like what you hear.
When the send level is 0, no effect will be applied;
when it is 100, the maximum amount of effect will be
applied.
7
If necessary, repeat Steps 5 and 6.