Marantz NR1508 Owner's Manual page 123

Contents Connections
o Subwoofer
Turn subwoofer output on and off.
On
(Default):
Off:
0 You can set this when the sound mode is "Direct" or "Stereo" and in the menu
"Subwoofer Mode" is set to "LFE+Main". (v p. 158)
o Set Defaults
The "Surr.Parameter" settings are returned to the default settings.
Front panel Display
Playback
The subwoofer is used.
The subwoofer is not used.
Rear panel
Settings
123
Remote
Tips Appendix
Index