Bittner Audio - Application Handbook
Page 35
3.7.5.2.
Connection of the Amplifiers and the AX16
The amplifiers and the AX16 are connected with a 15-pin ribbon cable (I²C System Bus). It is
equipped with male Sub-D DB-15 connectors. One connector is required for each amplifier, the
AX16 and the SXL.
The system bus transmits the following signals:
˜
Control signals in I²C format
˜
Audio of the emergency paging bus
˜
Audio of the monitor bus
˜
12V supply voltage for the interface boards of the amplifiers and the AX16
The maximum cable length is 2 meters. The devices need to be installed in such a way as to not
exceed the maximum cable length.
Preassembled cables or ribbon cables and single connectors may be ordered from your supplier.
3.7.5.3.
Address IDs
A unique ID needs to be assigned to every
amplifier that is connected to an SXL via the
system bus. It may be set via the DIP switch on
the backside of the amplifier.
Every two channels of an amplifier share one
ID. Consequently, every two-channel amplifier
uses one ID, four-channel amplifiers two IDs and
eight-channel amplifiers four IDs. The table on
the right hand side explains the different
settings.
After setting the ID(s), the amplifier
needs to be disconnected from the SXL
(ribbon cable) and from the mains
supply (power cord) to activate the
new ID.
Number of the Amplifier’s Channels
2
4
8
ID 1
IDs 1+2
IDs 1+2+3+4
ID 2
ID 3
IDs 3+4
ID 4
ID 5
IDs 5+6
IDs 5+6+7+8
ID 6
ID 7
IDs 7+8
ID 8
