13
VTX B
15
| User Manual
6 - CONNECTIONS
The B15 is equipped with four Neutrik NL4 speakON connectors, two on the rear and two on the front grill. All four connectors are wired
in parallel and can be used interchangeably. The front connectors are typically used when B15s are in a cardioid mode, where some
enclosures are pointed backwards. The connectors are installed upside down, making the locking pin position visible from under the
array. A channel selection switch available at the rear of the B15 selects between pins 1 (“A” position) and 2 (“B” position) of the NL4
Connector. The switch is wired after the NL connectors and affects all connections equally.
CAUTION: Always use high-quality insulated speaker cables made by reputable manufacturers . Keep cable length
as short as possible, with a sufficient wire gauge for the application .
6.1 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
Front NL4 Connectors : IN/OUT
Channel Selection Switch
Rear NL4 Connectors : IN/OUT
Summary of Contents for JBL Professional VTX Series
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