SIGNATURE 1.5 - Harman Kardon Audio User Guide / Operation Manual. Page 9

6

Note: When making any connections between source
components, processors or preamplifiers and the 1.5, or
when making any connections to speakers, be certain that
both the input device and the 1.5 are turned off. To ensure
that there will be no unwanted signal transients that can
damage equipment or speakers, it is always best to unplug
all equipment from AC power outlets before making any
connections. Modern electronic products often have a
“standby” mode that may be activated even though the
product may appear to be turned off.

The Signature Series 1.5 amplifier features a built-in
remote turn-on system that will automatically turn on the
amplifier when another device in the system is switched
on. To activate this system, this amplifier must be used in
conjunction with compatible Signature Series or Harman
Kardon products or other approved devices.

Note: Before making any connections to remote trigger
outlets, it is critical that both the 1.5 and the triggering
device be turned off. For additional safety, it is best that
these connections be made while both products are
unplugged from AC power sources.

Connect one end of the accessory cable supplied with the
2.0 to the 

jack § on the 

rear of the 1.5. Connect the other end to the TRIGGER
OUTPUT jack on the 2.0.

If the 1.5 is not used with a compatible Harman Kardon
product, it is still possible to activate the unit for
automatic turn-on.

To control the amplifier in this manner you will need 
a small AC-to-DC power converter capable of delivering a
6- to 12-volt DC signal. The DC voltage should terminate
in a standard 3.5 mm mono miniplug, with the tip of the
plug “positive” (

). This type of converter may be

obtained as a “Power Adapter” from many electronics
retailers. Consult your dealer for further information.

Plug the AC adapter into a switched outlet that will be
activated when you wish to have the amplifier turn on.
This may be the switched outlet at the rear of an AV
receiver or other audio equipment, an AC outlet that is
part of a current sensing control unit activated by a
preamp or surround processor or a switched AC wall
outlet.

Connect the 3.5 mm miniplug from the power converter to
the 

jack § on the rear of the 1.5.

As a general rule, avoid running any input signal or
speaker wire connections next to or parallel with AC
power cords. This may cause undesired hum or other
interference that will greatly degrade signal performance.

When making input connections with RCA-type plugs on
interconnect cables, make certain to gently but firmly
insert the plugs into the jacks on the rear of the 1.5. Loose
connections can cause intermittent sound and may
damage your speakers.

Stereo Mode: For conventional two-channel stereo
operation, connect the right channel output of your
preamp or processor to the 

™ and

the left channel output to the 

∞. Make certain that the 

£ is in

the NORMAL position (see page 8).

Bridged Mono Mode: To use the 1.5 as a single-channel,
mono amplifier, connect the line-level output 
of your preamp, processor or other signal source to the

connector ∞ on the rear

panel. No connection is required to the Channel One
connector in this mode. Make certain that the

£ is in the BRIDGE position (see

page 9).

The final step of the installation process is to connect the
amplifier to your speakers using high-quality cable. A pair
of binding posts is provided for each channel output.
These posts will accept bare wire or banana-type plugs.