JBL VTX Series, Руководство по подключению

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4
c
I-Tech 12000HD Standard Wiring (Discrete Mode):
Standard 4-conductor NL4 cables can be used to connect VTX subwoofers to Crown I-Tech HD amplifiers. Using stand-
ard cables, each component within a VTX subwoofer enclosure is connected to an independent amplifier channel as
shown in the drawing below. This wiring method is referred to as discrete wiring since each transducer within the en-
closure is discretely wired to an individual amplifier channel.
Crown I-Tech 12000HD
NL4 Cable
Channel 1 Channel 2
Pins-1 ± Pins-2 ±
For this configuration only the Channel 1 (Top) NL-4 connector should be used since it contains both Channel 1 and
Channel 2 of the iTech amplifier. If the Channel 2 connector is used, one of the transducers will be left disconnected as
shown in the example below.
X
Not Connected
Crown I-Tech 12000HD
NL4 Cable
Channel 2
Pins-2 ±
Similarly, using the two NL amplifier connectors for connecting multiple VTX subwoofer encloses should be avoided.
This wiring will only power 3 of the 4 subwoofer components, creating an 8-ohm load for Channel 1 and a 4-ohm load
for channel 2.
Incorrect
Channel 1 Channel 2
X
Not Connected Channel 2
Pins-1 ±
8-ohm
Pins-2 ±
4-ohm
Pins-2 ±
4-ohm
NL4 Cable