JBL VTX B18 Series, User Manual

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VTX B
18 | User Manual
7 - CONNECTIONS
The VTX B18 is equipped with four Neutrik NL4 SpeakON connectors, two at the rear for the cabinet and two at the front grill. All four
NL4 connectors are wired in parallel and can be used interchangeably. The NL4 connectors at the front of the B18 are typically used
when the B18s are setup in a cardioid configuration and when some of the enclosures are pointed backwards. All NL4 connectors are
installed upside down so that the NL4 locking pin position can be seen from under the array.
Front NL4 Connectors : IN/OUT
A channel selection switch is available at the rear of the B18 which allows for selecting between Pin-1 and Pin-2 of the NL4 connector/
cable. The switch is wired after the four NL4 connectors and affects all connections equally.
CAUTION: Always use high-quality insulated speaker cables made by reputable manufactures. Keep cable length as
short as possible with sufficient gauge for the application.
7.1 - INTERNAL WIRING
Pin Selection
Switch
A B
1+
1-
2+
2-
1+
1-
2+
2-
1+
1-
2+
2-
1+
1-
2+
2-
SUB
FRONT NL4 REAR PANEL NL4
B 18
Compact Single 18” Subwoofer
IN/OUT IN/OUT
A B
Channel Selection
SN
Rear NL4 Connectors : IN/OUT
Channel Selection Switch