Harman Kardon SUB-TS7 Service Manual Download Page 6

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SUB-TS8 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS

SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS

and is turned on, and the LED is lit amber to
indicate that no signal is being received and
the

Subwfr

is in Standby mode.

When the

Music-Sense On/Off Switch

is in the

position, the LED will be

lit blue, whether or not an audio signal is
present.

When the

Master Power Switch

turned off, the LED goes dark, no matter
which position the

Music-Sense On/Off

Switch

is in.

Phase Switch:

This switch determines

whether the subwoofer’s piston-
like action moves in and out in phase with
the main speakers. If the speakers were to
play out of phase, the sound waves pro-
duced by the subwoofer would be cancelled
out, reducing bass response. This phenome-
non depends in part on the relative place-
ment of the speakers in the room. In most
cases, the

Phase Switch

should be left

in the

NORMAL

position. However, it

does no harm to experiment with the

Phase

Switch

, and you may leave it in the

position that maximizes bass response.

∞

Line-Level Subwoofer (SUB) Input:

Connect the subwoofer output of a receiver
with digital surround sound decoding, such
as Dolby* Digital or DTS

, to this input. This

input bypasses the

Subwfr

’s internal

crossover circuitry, and should only be used
with a filtered signal. If your receiver does not
have digital decoding, you should use the

Line-Level Full-Range Inputs

instead.

Line-Level Full-Range Inputs:

Connect

the line-level subwoofer output or preamp out-
put(s) of your receiver or amplifier to these
inputs. If your receiver does not have a sepa-
rate subwoofer output, use a Y-adapter (not
supplied) to bridge the receiver’s preamp out-
put to the main amp input for that channel,
and connect the long end of the adapter
to the corresponding line-level input on the

Subwfr

. If your receiver has only a single

subwoofer output, you may connect it to
either the left or right line-level input on the

Subwfr

, and no Y-adapter is needed.

Speaker-Level Outputs:

If you are

using the

Speaker-Level Inputs

•

on the

Subwfr

, you should connect these binding-

post terminals to the front left and right
speakers, remembering to maintain polarity
by connecting the (+) terminal on the
subwoofer to the (+) terminal
on the speaker, and the (–) terminal on
the subwoofer to the (–) terminal
on the speaker. If you are not using the

Speaker-Level Inputs

•

, then connect

your front left and right speakers directly
to your receiver or amplifier. See pages

for further information on

speaker connections.

•

Speaker-Level Inputs:

Connect these

binding-post terminals to the main left and
right speaker terminals of your receiver or
amplifier, if your receiver or amplifier does
not have a line-level subwoofer output.
Remember to maintain polarity by connecting
the (+) terminal on the receiver/amplifier to the
(+) terminal on the subwoofer, and
the (–) terminal on the receiver/amplifier to the
(–) terminal on the subwoofer.

Master Power Switch:

Place this

switch in the “•” position to power-on the
subwoofer. The

Subwfr

will then

be either in the Standby mode or completely
on, depending on the position of the

Music-

Sense On/Off Switch

‚

AC Power Cord:

Make sure to plug this

cord into an active, unswitched electrical out-
let for proper operation of