HK 3270 (serv.man4) - Harman Kardon Audio User Guide / Operation Manual. Page 14

Installation and Connections

12

ENGLISH

When connecting wires to the speakers, be
certain to observe proper polarity.
Remember to connect the “negative” or
“black” wire to the same terminal on the
receiver and the speaker. Similarly, the
“positive” or “red” wire should be
connected to the like terminal on the
HK3270 RDS and speaker.

We also recommend that the length of
cable used to connect speaker pairs be
identical. Use the same length piece of
cable to connect the left and right
speakers, even if the speakers are a
different distance from the HK3270 RDS.

NOTE: While most speaker manufacturers
adhere to an industry convention of using
black terminals for negative and red ones
for positive, some manufacturers may vary
from this configuration. To assure proper
phase, and optimal performance, consult
the identification plate on your speaker, or
the speaker’s manual to verify polarity. If
you do not know the polarity of your
speaker, ask your dealer for advice before
proceeding, or consult the speaker’s
manufacturer.

Connect the speakers using the following
steps:

1. Connect the main speakers to the

terminals 

fl

.

2. Connect a second set of speakers, or
speakers that are in a second room
location to the 

terminals 

‡

.

3. When an optional, powered subwoofer is
used, connect the outputs of the

jacks 

fi

to the line-

level inputs of the subwoofer. When the
subwoofer’s amplifier has stereo inputs,
run interconnects from both jacks. When
the subwoofer has a mono input only, use
the bottom jack for the connection. When
a passive subwoofer is used, these
connections will be made to the optional
amplifier that powers the subwoofer.

The HK3270 RDS is designed for flexible
use with external control components and
power amplifiers. These connections are
easy to make during an initial installation,
or at a later date should you choose to
upgrade your system.

Remote Control Extension
If the receiver is placed behind a solid or
smoked glass cabinet door, the obstruction
may prevent the remote sensor from
receiving commands. In this event, an
optional remote sensor may be used.
Connect the output of the remote sensor to
the 

jack 

¢

. 

If other components are also prevented
from receiving remote commands, only
one sensor is needed. They may use this
unit’s sensor or a remote eye by running a
connection from the 

jack 

∞

to the Remote In jack on Harman

Kardon or other compatible equipment. 

External Audio Power Amplifier
Connections
If desired, an optional, external amplifier
may be used in place of the HK3270 RDS’s
internal power amplifier.

To connect an external power amplifier,
first remove the jumper pins that connect
the 

›

and 

‹

jacks on the rear panel. Keep the jumpers
in a safe place should they be needed at a
later time.

Using high-quality audio interconnect
cables, connect the 

jacks

›

to the input jacks on your power

amplifier. Make certain to match the right
output to the right input and the left
output to the left input.

Note that when an external power
amplifier is used, no special adjustments
are required. All volume and other control
adjustments are made using the standard
front panel or remote controls.

AC Power Connections
This unit is equipped with an accessory AC
outlet. It may be used to power accessory
devices, but it should not be used with high-
current draw equipment such as power
amplifiers. The total power draw may not
exceed 100W at this outlet.

This 

°

will

receive power only when the unit is on.
This is recommended for devices that have
no power switch, or those with a
mechanical power switch that may be left
in the “ON” position.

NOTE: Devices with electronic power
switches may only go into a Standby mode
when plugged in here.