User manual

MAX (1.1E)
CAUTION!
Connector wiring (four wire operation)
MAX internal wiring of the connector panel
to the crossover board in four wire and two
wire operation
Passive
Crossover
1+
1–
2+
2–
1+
1–
2+
2–
Passive
Crossover
LF+ LF– HF+ HF– n.c.
EP-512345
NL41+1–2+2–n.c.
IMPORTANT!
Only operate MAX loudspeakers with a d&b P1200A mainframe
fitted with ampMAX or AMP-L controller modules or with an d&b
E-PAC in linear configuration. As an alternative other high quality
power amplifiers may be used, provided their output power does
not exceed 500 watts into 8 ohms and an additional subsonic filter
is used (25 Hz with 12 dB/octave minimum), otherwise there is a
risk of damaging the loudspeaker components.
Connections
The MAX cabinet is fitted with a pair of Speakon-NL4 connectors.
All four pins of both connectors are wired in parallel. Using one
connector as the input, the second connector allows for direct
connection to additional loudspeakers.
MAX 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 right.
Four wire and two wire operation
To allow the choice of active or passive operation MAX cabinets
are driven by a four core cable. The HF and LF drivers are each
fed by their own pair of pins and separate passive crossovers. Pins
assignments 1+/1– connect the LF driver, pins 2+/2– connect the
HF driver, as illustrated on the right.
For applications requiring dedicated passive use, the MAX
cabinets internal wiring can be configured for connection to pins
1+/1– allowing use of a two core cable.
The passive two wire configuration is also used when MAX
cabinets are combined with C-Series active subwoofers. Driven by
a P1200A mainframe fitted with one AMP-L and one C-Series SUB
controller module the cabinets can be fed by a single four core
cable and linked together locally.
To configure the cabinet for twin wire use the connector panel has
to be removed by undoing the four Allen screws with a 2.5 mm
Allen key. The wiring on the back of the connector panel can be
changed to that shown in the lower illustration on the right.
In the twin wire/passive configuration both the LF and HF drivers
are connected to pins 1+/1–. Note that only the HF driver wiring
(white and white/red) differs from that used in the four wire
version.
In the twin wire configuration MAX can also be used with
amplifiers from other manufacturers. The amplifier or signal
distribution box needs to have positive signal on pin 1+ and
negative signal on pin 1– of it’s speakon output connectors.