Select > SETTINGS > ZONE > ZONE 1.

LOUD

Maintains frequency response at low volumes and increases perceived loudness at high volumes.

TONE

Sets the treble, middle, and bass tones.

ZONE NAME

Sets a name for this speaker zone to make it easier to identify.

SUB. FREQ.

Sets the subwoofer cutoff frequency, which can enhance the blend of the sound produced by the speakers and the subwoofer. Audio signals above the selected frequency are not passed to the subwoofer.

MORE

Sets the volume limit, subwoofer limit, and speaker balance.