Specifications

Multi Room Audio Matrix Switcher and System Installation Instructions
11
2.3 C-Bus Network
The MRA system's matrix switcher and amplifiers must be on the same C-Bus
network. The matrix switcher and each amplifier has a C-Bus connection on the rear
panel.
The high power amplifiers and matrix switcher use C-Bus network cables that are
terminated with RJ45 plugs. The Low Power Remote Amplifier uses a removable
screw terminal connector. You may daisy chain C-Bus connections at the units. If
you use wall plates, they should be clearly marked as C-Bus connection points.
Table 3 and Figure 7 show the termination details for C-Bus network cables.
RJ45 pin Signal Name Wire Colour
1 Remote ON green & white
2 Remote ON green
3 C-Bus negative (–) orange & white
4 C-Bus positive ( + ) blue
5 C-Bus negative ( – ) blue & white
6 C-Bus positive ( + ) orange
7 Remote OFF brown & white
8 Remote OFF brown
Table 3. C-Bus network cable data
Figure 7. C-Bus network cable termination
The catalogue numbers for the pink Cat.5e UTP cable are: 5005C305B (solid) and
5005C305BST (stranded).