User manual

F2-CO loudspeaker output
PIN ASSIGNMENT
OUTPUT
A LOW OUT +
B LOW OUT -
C SPEAKER ID
D SPEAKER ID
E SENSE DRIVE +
F SENSE DRIVE -
G HIGH OUT +
H HIGH OUT -
F2
A1 input signal connectors
INPUT
INPUT LINK
Pin assignment for remote
control
Pin 3 (+)
Pin 1 (–)
Pin 1 (GND)
Pin 2 (pos. signal)
Pin 3 (neg. signal)
Pin assignments on P1200A signal inputs
2-6 A1 User Manual
2.3. Connections
INPUT and INPUT LINK
The mainframe has a 3 pin XLR female input connector. Beneath
and wired in parallel is a 3 pin male XLR connector to provide an
input link - sometimes called a pass-through connector - used to
feed the input of the next device in the system signal chain.
Transformer balanced input (option)
To prevent system ground loops, the P1200A can be supplied with
transformer balanced inputs. The transformers used are studio
quality torroidal transformers able to handle signal levels up to
+28 dBu without degrading the systems low frequency response.
The input balancing transformer gives electrical isolation between
the source output (e.g. mixing console) and controller inputs and
therefore prevents ground loops. A 22 kohms coupling resistor
prevents electrostatic loading of the mainframe.
REMOTE CONTROL
The A1 is fitted with a two-wire serial remote control interface. The
3 pin female DIN remote control connector is located on the left of
the A1 rear panel. The connector is opto-coupled.
The remote functions are detailed in section 2.6. (Remote control &
monitoring).
OUTPUT (loudspeaker outputs)
The speaker output(s) are also located on the mainframe rear pa-
nel. Both power amplifier outputs (LF & HF), SENSE DRIVE and
SPEAKER ID connections all terminate on a single 8-pin CA-COM
connector. The CA-COM is a particularly robust and reliable bayo-
net fit (locking) connector.
Different controller modules have different output connector pin
assignments which are printed on the panel next to the connec-
tor(s). Each controller module speaker output panel is described in
the later sections of this manual along with the different active
loudspeakers and their controller modules.