JBL VTX Series Wiring Manual Download

Page: 12 / 15

Crown Audio VRack 4x3500HD:

Unlike the VRack 12000HD, due to its high channel density, the Crown Audio VRack 4x3500HD does not contain a

speaker output panel and all connections are made directly to the amplifier's NL4 and NL8 connectors. As seen above,

to implement parallel mode wiring on IT-4x3500HD amplifiers, a pair of LK VTX-NL-424 adapters can be used in con-

junction with 2 x NL4 cables that are directly connected to the amplifier’s NL4 outputs. Alternatively, a single NL8 cable

can be used in conjunction with LK VTX-NL-844. Therefore, one VRack4x3500HD is able to power 12x VTX subwoofers

with either: 6x NL4 + 6x VTX-NL-424 adapters or 3x NL8 + 3x VTX-NL-844 adapters

Rear

Front

Example:

6x VTX V20, 3x VTX S25, 1x VT4886 powered by 1x V-Rack 4x3500HD

Summary of Contents for VTX Series

Page 1: ...VTX Subwoofer Wiring Guide...

Page 2: ...ng All VTX series subwoofers with the exception of the VTX F18S have the two woofer components independently wired to the input panel NL connectors One woofer is connected to Pin 1 and the other to Pi...

Page 3: ...This wiring method is typically used when powering 2 way bi amplified loudspeakers and has Channel 1 outputs wired to Pins 1 and Channel 2 outputs wired to Pins 2 The lower CH2 NL4 connector is dedica...

Page 4: ...annel 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 us...

Page 5: ...ecting VTX subwoofers in this manner each amplifier channel powers half of the subwoofer group Below are some examples using VTX Subwoofers and discrete wiring Example 6x VTX S25 powered by iTech 1200...

Page 6: ...ofer per amplifier channel parallel wiring mode is recommended since it is more convenient to implement cardioid subwoofer configurations and Electronic Delay Steering EDS Parallel mode operation and...

Page 7: ...ly In this configuration a breakout cable or a rack I O panel is necessary to wire the two subwoofer transducers to one amplifier channel These adapter cables are easy to construct out of stock connec...

Page 8: ...mode wiring on IT 4x3500HD amplifiers a pair of LK VTX NL 424 adapters can be used in con junction with 2 x NL4 cables that are directly connected to the amplifier s NL4 outputs Alternatively a single...

Page 9: ...e angle of a given subwoofer array by applying a specific pre calculated delay value to each subwoofer enclosure The goal of EDS is to electronically alter the shape of a subwoofer array and widen the...

Page 10: ...uration can be used for larger system configurations Another interesting use case for the LK VTX NL 844 breakout cable unrelated to subwoofers is when used with the Vertec VT4886 line array system The...

Page 11: ...channel in parallel mode The NL4 connectors in the Blue group are all wired to individual amplifier channels with Pins 1 and Pins 2 connected in parallel at the VRack panel This allows one VTX subwoof...

Page 12: ...ode wiring on IT 4x3500HD amplifiers a pair of LK VTX NL 424 adapters can be used in con junction with 2 x NL4 cables that are directly connected to the amplifier s NL4 outputs Alternatively a single...

Page 13: ...ted from the Array Configuration menu and under the Sub Mode drop down menu The Sub Mode and amplifier to speaker wiring connection should be set correctly so that Performance Manager accurately rep r...

Page 14: ...e amplifier channel When the label shows S1 S2 that indicates discrete wiring mode and that each woofer is powered by a different amplifier channel Both the amplifier channels and speakers have to dis...

Page 15: ...Pin 1 Pin 2 Pin 3 Pin 1 Pin 2 Pin 3 Pin 1 Pin 2 Pin 4 Pin 1 Pin 2 Pin 4 Pin 1 Pin 2 Wiring NL4 NL4 1 NL4 2 Pin 1 Pin 1 Pin 2 Pin 1 Pin 1 Pin 2 Pin 2 Pin 1 Pin 2 Pin 2 Pin 1 Pin 2 NL4 1 NL4 2 Female N...