Harman Kardon HKSUB 12 Скачать руководство пользователя страница 10

Страница: 10 / 26

OPERATION

Power

Press the

Master Power Switch

⁄

(marked

Power

) at the “•” (On) marking.

The HKSUB 12 subwoofer will automatically
turn on or go into Standby mode, depending
on whether or not a signal is being sent to it
by your receiver or surround processor, and
provided that the

Music-Sense On/Off

Switch

is moved to the left so that it is

in the

AUTO

position.

When your receiver or amplifier is off, or is
not sending program material to the sub-
woofer, the subwoofer will be in Standby
mode and the

LED Indicator

on the

amp panel will turn red. When the subwoofer
senses an audio signal, it will automatically
turn on and the

LED Indicator

will turn

green. If the subwoofer does not sense a
signal after approximately fifteen minutes,
it will automatically go into Standby mode.

When the

Music-Sense On/Off Switch

is switched to the

position, the sub-

woofer will remain on, whether or not pro-
gram material is playing.

When you are away from home for
an extended period of time, switch the

Master Power Switch

⁄

to the

OFF

position to prevent accidental activation of
the HKSUB 12.

Volume

Volume may be adjusted using the

Subwoofer Level Control

‚

, as

shown. Turn the control knob clockwise
to increase the volume of the subwoofer,
and counterclockwise to decrease the
subwoofer’s volume.

The

Subwoofer Level Control

‚

adjusts

the volume of the subwoofer relative to the
rest of the system. Proper level adjustment
depends on several variables such as room
size, subwoofer placement, type of main
speakers and listener position. Adjust the
subwoofer level so that the volume of the
bass information is pleasing to you.

Additional Bass Adjustments

In addition to the volume adjustments
described above, the HKSUB 12 subwoofer
includes a

Crossover Frequency Control

, a

Filter Switch

•

and a

Phase

Switch

∞

that can be used to adjust the

bass response to suit your listening environ-
ment or taste.

The

Crossover Frequency Control

determines the highest frequency at which
the subwoofer reproduces sounds when the

Speaker-Level Inputs

Line-Level

Full-Range Inputs

are used. Consult

the owner’s manual for your main speakers
to determine the lowest frequency they are
capable of reproducing, and set this control
slightly above that frequency. For example, if
the specified frequency response for your
main speakers is 80Hz – 20kHz, then set
the

Crossover Frequency Control

slightly to the left of the

100Hz

marking

on the HKSUB 12’s amplifier panel.

The

Crossover Frequency Control

has

no effect when the

SUB Input

is in use,

or when the

High-Cut (Low-Pass) Filter

Switch

•

is in the

OFF

position.

The

High-Cut (Low-Pass) Filter Switch

•

limits the frequencies of the audio signal

inputted to the subwoofer to the low

frequencies that the subwoofer reproduces
best. This allows the subwoofer to perform
more efficiently and with superior bass
reproduction, minimizing distortion that might
occur if the subwoofer attempted to repro-
duce higher frequencies. This switch should
be left in the

position,

except

1. When the

SUB Input

is being used,

in which case it has no effect, or

2. When the

Speaker-Level Inputs

the

Line-Level Full-Range Inputs

are

being used with a crossover or filter aboard
the receiver or processor.

In these two circumstances, place the switch
in the

OFF

position.

If your receiver or processor allows you to
select the crossover frequency for the main
speakers, choose the setting just above the
lowest frequency the main speakers are
capable of reproducing. This will send the
low-frequency portion of the signal to your
HKSUB 12, which is best able to reproduce
these frequencies with greatest efficiency
and minimal distortion. In this case, you may
use the

SUB Input

connection, or if

that is not compatible with your receiver or
processor, place the

High-Cut (Low-Pass)

Filter Switch

•

in the

OFF

position in

order to avoid filtering the signal twice, which
may lead to signal loss and distortion.

In most situations, the

Phase Switch

∞

should be left in the

NORMAL

position.

If you suspect that the subwoofer is playing
out of phase with the other speakers, which
would tend to diminish bass response, try
placing this switch in the

REVERSE

position. There is no harm in experimenting,
and you may return the switch to the

NORMAL

position at any time.

If you rearrange your room and reposition
the speakers, it would be a good idea to
check whether they are in phase by
flipping this switch.

MIN MAX

Subwoofer

Level

MIN MAX

Subwoofer

Level

HKSUB12