User manual

(5.0E) 2-7
EP-5 connector panel
OUT A
OUT B
OUT CHANNEL A
OUT CHANNEL B
Speakon-NL4 connector
panel
NL4 EP-5
TOP + 1+ 1
TOP – 1– 2
SUB + 2+ 3
SUB – 2– 4
n.c. 5
Speakon-NL4 and EP-5 pin
assignments
OUT CHANNEL A/B (loudspeaker outputs)
The mainframe power amplifier outputs can also be found on the
mainframe rear panel. The P1200A is fitted with 4 pin Speakons as
standard, EP-5 output connectors are available as an option. All C-
Series and E-Series loudspeakers use Speakon connectors as
standard.
The Speakon connector pin assignments match the type of
loudspeaker used and therefore depend on the controller module
fitted to the mainframe (see section 2.9.).
The full range/TOP systems (E3, E9, C6, C7-TOP and C4-TOP) and
passive subwoofers (E15-BX) use pins 1+ and 1– of the Speakon
connector. Active subwoofers (C4-SUB, C7-SUB, E18-SUB) use pins
2+ and 2–.
Not only do these pin assignments protect full range loudspeakers
from being damaged by accidental connection to a mainframe
subwoofer output, they also allow full range cabinets and
subwoofers to be linked together and connected to a mainframe
with mixed controller modules using a single four-wire cable.
AMP-L modules feed pins 1+ and 1– of the speakon connector.
ampMAX modules feed all four pins of both output connectors.
However, the type of signal at the different pins depends on the
controller set up (active or passive mode; see section 4. MAX).
Pin equivalents for the optional EP-5 mainframe output connectors
are listed in the table below.
Each P1200A mainframe output is rated to drive a load impedance
of 4 ohms or greater. This means that each output will drive two 8
ohm loudspeakers connected in parallel or, in the case of E3
loudspeakers, rated at 16 ohms impedance, four connected in
parallel.
Connecting and driving more loudspeakers will not damage the
mainframe but will limit the quality and dynamic range of
reproduced sound as the load dips below 4 ohms. Driving low
impedance loads at high levels can also trigger the mainframe
protection circuits for thermal or output current overload.
2.9. Mainframe configurations
Due to the different pin assignments of subwoofers (SUB) and full
range or mid/high (TOP) systems different configurations of the
two mainframe module slots are possible.
A given combination of controller modules requires certain slot
positions and a corresponding output connector wiring.
The following overview shows the possible module and output
wiring configurations of the P1200A mainframe. AMP-L modules
are to be handled like TOP modules.