Boss RC-20XL Owner's Manual page 16

Recording a phrase from CD/MD to create a loop phrase
5. To have recording start simultaneously with playback of a CD or MD, set the
AUTO START button to ON (with the indicator lit).
When AUTO START button is on, stop the CD/MD player for now, and put it in
playback-ready mode.
6. Press the left pedal to begin recording.
If the AUTO START button is on, recording will begin the moment the CD/MD begins
to play.
If the AUTO START button is off, recording will begin the moment you press the left
pedal. Listen to the sound of the CD/MD, and press the left pedal at the appropriate
time.
* If the internal memory is used up, recording or overdubbing may stop before you are
finished. If this occurs, erase unnecessary phrases (p. 31), and try the operation again.
7. Press the left pedal to stop recording.
Simultaneously, the recorded phrase will begin playing. The tempo of the phrase will
also be set automatically.
* The automatic tempo setting is calculated with a time signature of 4/4. If you are recording
a phrase whose time signature is different, you must specify the time signature before
recording (p. 34).
* The minimum length of time required for a loop phrase is approximately 1.5 seconds. If the
phrase you've recorded is shorter than that, the length of the phrase will be adjusted
automatically, and then recording will stop (p. 37).
8. Press the WRITE button, getting the indicator to start flashing. When you do
so, playback will stop automatically. To save the data in the same phrase
track, press the WRITE button once again.
If you wish to save the data in a different phrase track, press the WRITE button (so its
indicator is flashing), use the PHRASE SELECT knob to select the desired save
destination, and then press the WRITE button once again.
* For details on saving, refer to "Saving a phrase" (p. 29).
We recommend that you save the phrase at this point. If you are not content with the
results of subsequent overdubbing, you can then cancel only the overdubbing.
16