User manual

C4-TOP Data Sheet C4-TOP
CAUTION!
EP-5
1
2
3
4
5
NL4
1+
1
2+
2
n.c.
Speakon- NL4 and EP-5 pin assignments
Connector wiring
Passive
Crossover
1+
1
2+
2
1+
1
2+
2
C4-TOP
The C4-TOP is a two way horn loaded loudspeaker which provides
high SPL coverage from mid to high frequencies. The constant
directivity design of the C4-TOP's coaxial horns ensures that it's
35° x 35° dispersion is maintained down to 800 Hz. The driver
complement consists of two passively coupled devices - a 12" low/
mid frequency driver and a 2" HF compression driver.
The C4-TOP cabinet is constructed from marine plywood, fitted
with steel handles, MAN CF4 stud plate rigging points and has an
impact resistant paint finish. The front of the loudspeaker cabinet is
protected by a rigid metal grill, covered with a replaceable
acoustically transparent foam and fitted with catches to the top
and bottom for securing an optional transport lid E7908. Mounted
on the rear panel are ratchet strap guide plates (kelping bars), four
M10 threaded inserts for attaching installation hardware, two
Speakon NL4 or EP-5 connectors wired in parallel and four heavy
duty wheels.
As the C4-TOP operates from 18 kHz down to 150 Hz, it requires
low frequency support from a subwoofer system like the C4-SUB
(50 Hz to 150 Hz).
C4 systems comprising TOP and SUB cabinets can be used ground-
stacked or flown. The distinctive angled rear side panels of the C4
cabinet set a 30° horizontal angle between side by side array
columns. The recommended two stack minimum C4 configuration -
two TOP's and two SUB's per side - gives 70° of horizontal
coverage.
The narrow dispersion angle and very high output capability of the
C4 system make it suitable for audience coverage up to and
beyond 50 m (165 ft) - ideal for large concert halls, arenas and
open air festival sites.
Only operate C4-TOP loudspeakers with a d&b P1200A mainframe
fitted with C4-TOP controller modules otherwise there is a risk of
damaging the loudspeaker components.
Connections
The C4-TOP cabinet is fitted with a pair of Speakon-NL4
connectors. All four pins of both connectors are wired in parallel.
The C4-TOP uses the pin assignments 1+/1. Pins 2+/2 are
designated to C and E-Series active subwoofers. Using one
connector as the input, the second connector allows for direct
connection to additional loudspeakers.
The C4-TOP can be supplied with EP-5 output connectors as an
option. Pin equivalents of Speakon-NL4 and EP-5 connectors are
listed in the table on the left.
Up to two C4-TOP loudspeakers can be driven by each P1200A
power amplifier channel. Fitting one C4-TOP-CO and one
subwoofer controller module allows a single mainframe to drive
two C4-TOP and two active subwoofer cabinets (C4-SUB or
C7-SUB). All cabinets can be linked together locally and fed by a
single four-wire cable from either mainframe output connector.