Harman-Kardon SB 30 Subwoofer Controls, Connections and Controls, Phase Switch Volume Control

SB 30

Connections and Controls

Subwoofer Controls

Power LED (on top of unit)

Phase

Switch

Volume

Control

Wireless Code Switch

Power Switch

This area is designed to become quite warm during normal operation

Power Cord

Power LED (on top of unit): The Power LED’s color indicates the subwoofer’s operational status:

•Blue: The subwoofer is operational.

•Amber: The subwoofer is in the Standby mode.

•Off: The subwoofer is turned off.

Phase switch: This switch determines whether the subwoofer driver’s piston-like action moves in and out in phase with the speakers in the soundbar. If the subwoofer were to play out of phase with the soundbar speakers, the sound waves from the soundbar could cancel out some of the sound waves from the subwoofers, reducing bass performance and sonic impact. This phenomenon depends in part on the placement of the subwoofer and soundbar relative to each other in the room. See Subwoofer Phase Switch, on page 11, for more information.

Volume control: Use this control to balance the subwoofer’s volume with that of the soundbar. Turn the knob clockwise to increase the subwoofer’s volume; turn it counterclockwise to decrease the subwoofer’s volume. See Subwoofer Volume Control, on page 11, for more information.

Wireless Code switch: This switch selects among four different wireless channels for the wireless subwoofer signal.

IMPORTANT: Be sure to set the subwoofer’s Wireless Code switch to the same channel that you set the soundbar’s Wireless Code switch. See Wireless Code Switches, on page 10, for more information.

Power switch: Set this switch to the “On” position to activate the subwoofer. In normal operation, this switch will be left in the “On” position. See Turning the Subwoofer On and Off, on page 11, for more information.

Power cord (non-detachable):Plug this cord into an active, unswitched AC outlet. See Power Connections, on page 9, for more information.

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