Roland AT900 Music Atelier Owner's Manual page 250

Connecting with External Device
Aux-Setting1.eps
A Setup for a Small Hall or Home
Speakers are placed at the back to produce the RSS reverb sound.
This setup lets you enjoy the sensation of being enveloped by sound,
even while in your own living room.
Rear Speaker L
Powered Speaker
A Setup for a Mid-sized Hall
Speakers are placed in front and in the back to produce the RSS reverb sound.
Front Speaker L
Rear Speaker L
248
AT-900/AT-900C
Aux/Drum Output
AT-900/AT-900C
Main Output
Amplifier
Amplifier
Aux Out Mode:
Powered Speaker
Aux Out Mode:
Aux/Drum Output
Aux Out : ON
AMBIENCE
Rear Speaker R
Aux Out : ON
AMBIENCE
Front Speaker R
Rear Speaker R