DSP Matrix Mixer
Call stations and wall control panels, are connected to the PLM‑8M8 DSP matrix mixer via
CAT‑5 cable using RJ45 connectors. The multi channel DSP amplifiers are connected to the
DSP matrix mixer either via Amp Link or via the output Phoenix connectors. All other
connected wiring must be of a professional quality and preferable screened.
Line 7 Network
Link/Act 100Mbps
Control Panels
Call Stations
Power
Mic/Line 4
Mic/Line 3Mic/Line 2Mic/Line 1
Amp Link Out 5-8
Amp Link Out 1-4
L
R
Line 5 Line 6
Out 1 Out 2 Out 3 Out 4
Out 5 Out 6 Out 7 Out 8
Alert
Evac
Active
0V
Override
N.C.

1/2 3 4 5 6 7 9

8 11

10

Number Item Description
1 Power on/off AC mains supply switch.
2 Mains inlet AC mains input socket.
3 Amp Link
outputs
– RJ45 socket for Amp Link connection:
– Amp Link 1‑4 output duplicates the outputs of outputs 1‑4.
– Amp Link 5‑8 output duplicates the outputs of outputs 5‑8.
– The maximum cable lenght between DSP matrix mixer and the multi channel
power amplifier: 5 m / 16.42 ft.
–Do not connect any device, other than a PLM‑4Px2x amplifier!
4 Phoenix zone
outputs
– 3‑pole Phoenix screw terminal connection per output channel:
– Balanced line out.
5 Mic./Line input – 4 x XLR balanced microphone/line level audio input (1-4):
– XLR 3‑pin number connection: 1 = ground, 2 = + signal, 3 = - signal.
6 Line inputs – 3 x 2 RCA summed line input sockets for external music sources.
7 Active contact – 4‑pin pluggable screw socket/connector with ESD protection:
– From left to right; Pin 1: Alert, Pin 2: evac, Pin 3: override, Pin 4: ground.
– Pin 1, 2 and 3 logic inputs, triggers with ground pin 4.
8 Override input – 4-pin pluggable screw socket/connector with ESD protection:
– Audio line level analog override input (+, - and shield balanced input).
9 Network – RJ45 Ethernet communication socket:
– Communication with the PLENA matrix GUI applications.
10 Wall control
panel
– RJ45 socket for RS485 data communication, power and audio bus:
–Do not connect any other device, other than wall control panels!
–Maximum 16 daisy‑chained wall control panels.
–Maximum safe cable distance; 500 m / 1640.42 ft to the final unit.
11 Call station – RJ45 socket for RS485 data communication, power and audio bus:
–Do not connect any other device, other than call stations or wall control
panels!
–Maximum 8 daisy‑chained call stations.
–Maximum safe cable distance; 500 m / 1640.42 ft to the final unit.
6.4
PLENA matrix Connections | en 21
Bosch Security Systems B.V. Operation manual 2013-06 | V1.0 |