Kenwood KRF-X9992D User Manual page 66

How Do I Record (Edit Mode)?
Digital to Analog Recording:
Analog audio tape can only contain 2 channels of sound. Your
receiver can "downmix" from Dolby Digital or MPEG 5.1-
channel sound down to 2 channels. You can manually set the
listen mode to enable this downmixing. For more information
on setting listen modes, see "To set the listen mode manually"
on page 20.
You can also do this procedure automatically by selecting AUTO
REC MODE with DISPLAY MODE key on the front panel of the
receiver. Press the DISPLAY MODE key for more than 2 second
and select it. If the sound is cut or interrupted using AUTO REC
MODE, try MANUAL REC MODE. (When you want to select
MANUAL REC MODE, play the music first, and then select the
mode in the same way. If no sound is heard, press the DISPLAY
MODE key once.)
Audio-Video Receiver KRF-X9992D 59