Harman JBL STAGE A120P, Owner'S Manual

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SUBWOOFER REAR-PANEL CONTROLS AND CONNECTION
1) Power Mode:
When switched to 'Auto' position, the subwoofer will then be in Standby
mode. It will automatically turn on when an audio signal is detected
and will return to the Standby mode when no audio signal is detected
after approximately 10 minutes. Setting this switch to 'On' keeps the
subwoofer powered until Power Switch is turned 'Off.'
2) On/Standby LED:
When the Power Switch is in the 'On' position, this LED indicates whether
the subwoofer is in the On or Standby state.
• When the LED glows blue, the subwoofer is turned On.
• When the LED glows red, the subwoofer is in the Standby mode.
3) Phase Switch:
This switch determines whether the subwoofer transducer's piston-
like action moves in and out in phase with the main speakers. If the
subwoofer were to play out of phase with the main speakers, the sound
waves from the main speakers could partially cancel out the sound waves
from the subwoofer, reducing bass performance and sonic impact. This
phenomenon depends in part on the placement of all the speakers relative
to the listening position and to each other in the room.
4) Crossover Control:
This control determines the highest frequency at which the subwoofer
reproduces sounds. The higher you set the Crossover control, the higher
in frequency the subwoofer will operate and the more its bass will “overlap”
that of the speakers. This adjustment helps achieve a smooth transition of
bass frequencies between the subwoofer and the speakers for a variety of
different rooms and subwoofer locations.
5) Volume:
Use this control to adjust the subwoofer's volume. Turn the knob
clockwise to increase the volume; turn the knob counterclock-wise to
decrease the volume.
6) Subwoofer (LFE Input):
Connect the subwoofer to the dedicated subwoofer / LFE output of a
receiver/processor.
7) Power Switch:
Set this switch in the 'On' position to turn the subwoofer on. If you will
be away from home, or will not be using the subwoofer for an extended
period, set this switch in the 'Off' position to conserve energy.
8) Power Input:
After you have made and verified the subwoofer's input connection, plug
the power cord into an active, unswitched electrical outlet for proper
operation of the subwoofer.
DO NOT plug the power cord into the accessory outlets found on some
audio components.