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PB 5 Patchbay
The PB 5 is an interface for connecting and switching
one HK AUDIO
®
Digital Field Controller, two VX
2400 power amps, and the speaker system. It offers
inputs for analog and digital audio signals and
four outputs for speaker signals. Featuring flexible
configuration possibilities, it affords you a variety
of routing options. For example, you can assign the
mid/ high or subwoofer signal to any power channel
without having to reconnect patch cables. And that
means you can easily and swiftly set up the desired
rack configuration, for instance, Mid/ High only and
Sub only. For more on this, see section 3.
1 Front Panel
Connections and
Control Features
1.1 Analog Audio Input
The PB 5 offers a three-pin female XLR port that
accepts signals from audio sources with analog
outputs. Signals can be patched through via a male
XLR connector wired in parallel.
Pin assignments are:
pin 1 = ground, pin 2 = signal (+), pin 3 = signal (-).
You can reverse pin 2 and 3's pin assignments using
the Polarity switch.
1.2 DIGITAL AES/EBU
Digital Audio Input
The PB 5 is equipped with a three-pin female XLR
port that accepts signals from audio sources with
digital AES/EBU outputs. Signals can be patched
through via a male XLR port. Pin assignments are
pin 1 = ground, pin 2 and 3 = signal.
1.3 Channel 1 to 4
Speaker Outputs
The PB 5 is equipped with four NL 4 Speakon ports
that depending on the given system configuration,
connect to the outputs of up two VX 2400 power
amps. The pin assignments of the NL 4 Speakon
connectors are:
Pin 1+ = mid/ high+
Pin 1- = mid/ high -
Pin 2+ = sub +
Pin 2- = sub -
1.4 Mid/ High and Sub
Multi Outs
The PB 5 is equipped with two NL 8 Speakon ports,
one for connecting the mid/ high multicore spea-
ker cable and one for connecting the subwoofer
multicore speaker cable. These connectors let you
drive either eight mid/ high range cabinets or eight
subwoofers using one PB 5 rack. The PB 5 is desig-
ned to handle a total of four channels (that is, eight
cabinets), so the two Multi Outs can only be used
simultaneously by employing two channels of the
Subwoofer Multi Outs and two channels of the
Mid / High Multi Outs. The pin assignments of
the NL 8 Speakon connectors are as follows:
Multi Out Multi Out
Mid/High: Subwoofer:
Pin 1+ Ch. 1 mid/high+ Ch. 1 subwoofer+
Pin 1- Ch. 1 mid/high- Ch. 1 subwoofer-
Pin 2+ Ch. 2 mid/high+ Ch. 2 subwoofer+
Pin 2- Ch. 2 mid/high- Ch. 2 subwoofer-
Pin 3+ Ch. 3 mid/high+ Ch. 3 subwoofer+
Pin 3- Ch. 3 mid/high- Ch. 3 subwoofer-
Pin 4+ Ch. 4 mid/high+ Ch. 4 subwoofer+
Pin 4- Ch. 4 mid/high- Ch. 4 subwoofer-
Note: When using factory-configured COHEDRA®
Power Racks, never connect more than two cabinets
in parallel to one output. On the PB 5, use either
the individual NL 4 Speakon Outs or Multi Outs
to ensure that you do not connect too many
mid/high cabinets or subwoofers in parallel.
Patchbay PB5
Figure 1: PB 5 front view with control features
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