Harman-Kardon SB15/230 - Manual (Page 5)

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CROSSOVER
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Subwoofer Rear-Panel Controls
Crossover Knob: This knob adjusts the subwoofer’s crossover between 50Hz and
150Hz .The higher you set the Crossover knob, the higher in frequency the subwoofer
will operate and the more its bass will “overlap” that of the soundbar . This adjustment
helps achieve a smooth transition of bass frequencies between the subwoofer and
the soundbar for a variety of different rooms and subwoofer locations . See Subwoofer
Crossover Knob, on page 9, 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 .
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, some of the sound
waves produced by the subwoofer or soundbar could be canceled, reducing bass
performance and sonic impact . This phenomenon depends in part on the relative
placement of the speakers in the room . See Subwoofer Phase Switch, on page 9, for
more information .
Wireless Code Switch: Selects between four different channels for the wireless
subwoofer signal . IMPORTANT: Be sure to set the soundbar’s Wireless Code switch to
the same channel as you set the subwoofer’s Wireless Code switch . See Wireless Code
Switches, on page 9, for more information .
AC Fuse: The SB 15SUB is factory-equipped with a T1AL/250V 1A – 250V AC fuse . If
the fuse ever blows:
Unplug the power cord from the wall . 1 .
Use a screwdriver to remove the blown fuse . 2 .
Replace the fuse with an identical T1AL/250V 1A – 250V AC fuse . 3 .
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE, REPLACE THE FUSE ONLY WITH
THE SAME TYPE AND RATING .
Power Cord: Plug this cord into an active, unswitched AC outlet . See Power
Connections, on page 7, 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 8, for more information .
Status Indicator (on top of unit, not shown): Lights blue when the subwoofer's
power switch is in the On position; lights amber when the subwoofer is in Standby;
turns off when the subwoofer’s Power switch is in the Off position .
Crossover
Knob
Volume
Knob
Phase
Switch
Wireless
Code
Switch
Power
Cord
AC
Fuse
Power
Switch