B18 Using I-Tech 4X3500Hd - JBL VTX Series User Manual

10.3 B18 USING I-TECH 4X3500HD

When using Crown I-Tech 4x3500HD amplifiers, up to four VTX B18 (one per circuit) subwoofers can be powered per amplifier. Based
on the B18 component resource requirements, this allows for optimum power-to-transducer ratio without compromising the maximum
SPL capabilities of the system. The example below illustrates how to connect four VTX B18 cabinets to a four-channel I-Tech HD am-
plifier using standard four-conductor NL4 cables. The channel selection switch at the back of each B18 is used to assign each cabinet
to the appropriate amplifier channel.
Amplifier Channels
Channel 1 B18 1
Channel 2 B18 2
Channel 3 B18 3
Channel 4 B18 4
Amplifier Rear Panel
CH1/CH2 CH1/CH2 CH3/CH4 4 CH3/CH
OUTPUTS OUTPUTS
Crown I-Tech 4x3500HD
CAUTION: Make sure the total number of VTX B18 enclosures per circuit/amplifier does not exceed the maximum num-
ber recommended.
VTX B18 | User Manual
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Channel Selection
Switch
A
B
A B
A
B
A B