Harman Kardon PA 2000 Service Manual Download Page 17

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CHANNEL CONFIGURATIONS

Channel Configurations and Audio Connections

In addition to the speaker connections, the
following steps must be followed for this con-
figuration:
• Connect the audio input source to the

Main

Amp Input Jacks

⁄

• Locate both the

Bridge 1 Amplifier Mode

Switch

‡

and the

Bridge 2 Amplifier

Mode Switch

on the rear panel, and use

a #1 Phillips screwdriver to carefully remove
the screws on either side of the plastic switch
guards that are around each of the switches.

• Remove both plastic guards and set them

aside with the screws.

• Slide both switches to the left so each one is

under the word “BRIDGE”.

• Replace the plastic switch guards with the

two screws so that both switches are secured
in their proper position.

Figure 3

Two Inputs/Four Outputs

In this configuration, there are four speaker pair
outputs, with three channels being fed by one
input source and one channel being fed by a
second, separate source.

Connect the speakers and audio inputs as fol-
lows:
• Connect the source that is to be fed to three

speakers to the

Main Amp Input Jacks

⁄

The speakers that are to receive this signal
should be connected to the

Channel 1

Speaker Output Terminals

, the

Channel 2 Speaker Output Terminals

∞

and the

Channel 4 Speaker Output

Terminals

using the standard speaker

wiring markings on the rear panel, as shown
in Figure 1.

• Connect the source that is to be fed to only

one channel to the

Channel 3 Input Jack

›

• Move the

Channel 3 Separate Switch

to the left so that it is under the word “ON”.

• Connect the speaker pair that will receive the

separate input feed to the

Channel 3

Speaker Terminals

™

using the normal

wiring connections and markings as shown in
Figure 1.

• Make no changes to the

Amplifier Mode

Switches

‡

. Leave them in their factory

positions with the switch over the word
“NORMAL”.

Two Inputs/Three Outputs

In this configuration, there are three speaker
pair outputs, with one high-power and one
lower-power pair receiving the same input,
while a second, separate input is sent to an
additional speaker pair.

Connect the speakers and audio inputs as
follows:
• Connect the source that is to be fed to the

high-power speaker set and the lower-power
speaker set to the

Main Amp Input Jacks

⁄

. Connect the higher-power speaker set as

shown in Figure 2 to the speaker terminals
marked “Bridge 1”. Make certain that the
connections for these speakers are made to
the proper “+” and “–“ terminals with the
two vertically oriented binding posts on each
side of the channel pair, as opposed to the
horizontal orientation of normal speaker con-
nections. DO NOT use the standard channel
output and polarity markings for these speak-
er connections.

• The speaker set that is to receive the lower

power signal should be connected to the

Channel 4 Speaker Output Terminals

using the standard speaker wiring markings
on the rear panel as shown in Figure 2.

• Connect the source that is to be fed to only

one channel to the

Channel 3 Input Jack

›

• Move the

Channel 3 Separate Switch

to the left so that it is under the word “ON”.

• Connect the speaker pair that will receive the

separate input feed to the

Channel 3

Speaker Terminals

™

using the normal

wiring connections and markings as shown in
Figure 1.

• Locate the

Bridge 1 Amplifier Mode

Switch

‡

on the rear panel, and use a #1

Phillips screwdriver to carefully remove the
screws on either side of the plastic switch
guard that is around the switch.

• Remove the plastic guard and set it aside

with the screws.

• Slide the switch to the left so that it is under

the phrase “BRIDGE 1”.

• Replace the plastic switch guard with the two

screws so that the switch is secured in the
proper position.

Two Inputs/Two Outputs

In this configuration, the PA 4000 acts as a
dual-stereo amplifier, with two separate signals
being sent to high-power amplifiers.

Connect the speakers and audio inputs as follows:
• Connect one input source to the

Main Amp

Input Jacks

⁄

. Connect the speakers that

are to receive this signal to the speaker ter-
minals marked “Bridge 1”, as shown in
Figure 3. Make certain that the connections
for these speakers are made to the proper
“+” and “–“ terminals with the two vertically
oriented binding posts on each side of the
channel pair, as opposed to the horizontal ori-
entation of normal speaker connections. DO
NOT use the standard channel output and
polarity markings for these speaker connec-
tions.

• Connect the other input source to the

Channel 3 Input Jack

›

. Connect the

speakers that are to receive this signal to the
speaker terminals marked “Bridge 2”, as
shown in Figure 3. Make certain that the con-
nections for these speakers are made to the
proper “+” and “–“ terminals with the two
vertically oriented binding posts on each side
of the channel pair, as opposed to the hori-
zontal orientation of normal speaker connec-
tions. DO NOT use the standard channel out-
put and polarity markings for these speaker
connections.

• Move the

Channel 3 Separate Switch

to the left so that it is under the word “ON”.

• Locate both the

Bridge 1 Amplifier Mode

Switch

‡

and the

Bridge 2 Amplifier

Mode Switch

on the rear panel, and use

a #1 Phillips screwdriver to carefully remove
the screws on either side of the plastic switch
guards that are around each of the switches.

• Remove both plastic guards and set them

aside with the screws.

• Slide both switches to the left so each one is

under the word “BRIDGE”.

• Replace the plastic switch guards with the

two screws so that both switches are secured
in their proper position.

Note for Audio Connections

When making connections with the RCA-type
plugs on interconnect cables, make certain to

gently

but firmly insert them into the jacks on

the back of the PA 4000. Loose connections
can cause intermittent sound and may damage
your speakers. The barrel assembly of some
high-quality RCA plugs may be very tight, and it
is important to ensure a proper connection
between the interconnection cable and the
input jack.

+ —

Right Speaker

Left Speaker

Channel 1

+ —

Right Speaker

Left Speaker

CH1

CH2

CH3

CH4

PA4000