Cardioid dispersion
Cardioid dispersion avoids unwanted energy behind the system
and greatly reduces the excitation of the reverberant field at low
frequencies providing the greatest accuracy of low frequency
reproduction. The subwoofers can be used as stand-alone solutions
or in stacked combinations with a minimum distance of 60 cm (2 ft)
between adjacent cabinets or between the subwoofers and a side
wall. When positioned in front of walls, the minimum distance to
rear walls is maintained by the wheels mounted at the rear of the
cabinet.
2.2 Connections
The cabinets are fitted with NLT4 F/M connectors. All four pins of
both connectors are wired in parallel using the following pin
assignment:
▪ Pins 1+/1– feeding the front LF driver.
▪ Pins 2+/2– feeding the rear LF driver.
d&b LoadMatch
With the d&b four channel amplifier platform, the LoadMatch
function enables the amplifier to electrically compensate for the
properties of the loudspeaker cable used without the need for an
additional sense wire. For applicable loudspeakers, LoadMatch is
therefore independent of the connector type used.
2.3 Operation
Amplifier output mode(s): 2-Way Active
Application
Setup
Cabinets per
pair of amplifier
channels
XSL-SUB
XSL-SUB
XSL-SUB AP
XSL-SUB Fln
2
1
1
XSL-GSUB
XSL-SUB
XSL-SUB AP
2
1
In its standard mode the XSL-SUB/XSL-GSUB can be used as
subwoofer for applicable d&b loudspeaker systems operated in
CUT mode. The two channels of the system are tuned to create a
cardioid dispersion pattern thus providing maximum rejection to the
rear. It can be used in flown or stacked combinations with a
minimum distance of 60 cm (2 ft) between adjacent columns of
cabinets.
Cardioid dispersion pattern
NLT4 F/M Connector wiring
d&b XSL-SUB/XSL-GSUB Manual 1.3 en
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