d&b audiotechnik V-GSUB, Manual

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2.2 Connections
The cabinet is fitted NLT4 F/M connectors. All four pins of both
connectors are wired in parallel. The V-GSUB uses the pin
assignments 2+/2–. Pins 1+/1– are designated to TOP cabinets.
Using one as the input, the second connector allows for direct
connection to a second cabinet.
The cabinet can be supplied with NL4 M or EP5 connectors as an
option.
Pin equivalents of the connector options are listed in the table
below.
NLT4 F/M
NL4 M
1+ 1– 2+ 2– n.a.
EP5 1 2 3 4
5 (SenseDrive
front)
d&b LoadMatch
Starting with the D80 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.
d&b SenseDrive
The SenseDrive feature within D12 amplifiers enables electrical
compensation for the properties of the loudspeaker cable used.
SenseDrive requires an additional sense wire. SenseDrive is
therefore only available with EP5 connectors and 5-wire cabling
for applicable loudspeakers.
Note: When the D12 is operated in "Mix TOP/SUB mode",
the SenseDrive function is only available at the output B
connector.
NLT4 F/M, NL4 M and EP5 connector wiring
d&b V-GSUB Manual 1.2 en 6