Audio inputs. AWG DUAL USB POWER CHARGER FOR NDS LITE

AXYS ® Intellivox 808/1608 Installation Manual Rev 1.1

AUDIo INPUTS

The IntelliAmp is normally* fitted with two transformerbalanced line inputs. Selection of Input 1 and/or Input 2 as audio source is made from the WinControl software via the network, and for most installations only Input 1 need be wired. However, Input 2 may be connected to a secondary signal path (in case of a failure elsewhere in the system), or to an emergency sound source.

Inputs 1 and 2 are available on the 6p male WAGO connector on the rear panel, but Input 1 is paralleled to a

3-pin female XLR on the front panel; this is usually reserved for use during a temporary installation set-up, but may used as the permanent audio input if more convenient.

Audio 1 is also wired to an adjacent 3-pin male XLR, allowing audio to be looped to further IntelliAmps where required.

For optimum results only use good quality balanced audio cable consisting of a twisted pair and an overall screen.

The audio source(s) (e.g. the AXYS ® Octadrive) should have a low impedance balanced output. The nominal line input level is 0 dBV.

The front and rear panel audio connector pinout is as follows:

Xlr CoNN (front)

PIN No.

1

2

3

FUNCTIoN

Line 1 Screen

Line 1 +

Line 1 -

If the source equipment has a well-designed balanced output and the wiring strategy shown below is used, there should be no problems with hum or other extraneous noise.

Note that pins 3 and 6 of the audio connector are analogue audio grounds, they should be used only for connecting the screen of the audio cables, and for no other purpose.

1

3

2

Balanced source output (e.g. XLR) fig.8.2 - Balanced audio connections

3

4

1

2

5

6

LINE 1+

LINE 1 -

LINE 1 SCN

IntelliAmp line level audio input

(Line 1 only shown) or

1 2 3 4 5 6 fig.8.1 - Audio input connections

6 5 4 3 2 1

Due to the complex architecture of some large audio systems, unexpected hum or noise may occur due to ground loops, or injected noise from other equipment elsewhere in the system. If this occurs, please refer to the appendix of this manual and/or the JBL website, where additional guidance on grounding strategies will be found, with general techniques that may be applied in order to reduce ground-induced noise.

PIN No.

4

5

6

1

2

3

+2

-2

G2

+1

-1

G1 lABEl

WAGo CoNN (rEAr)

STANDArD VErSIoN

1 X 70 V/100 V

1 X lINE VErSIoN

DUAl 70 V/100 V

VErSIoN

Line level audio input 1

(0 dBV)

Line 1 +

Line 1 -

Line 1 Screen

70 V/100 V

70 V/100 V +

70 V/100 V input*

GND (n/c)

70 V/100 V

70 V/100 V +

70 V/100 V input*

GND (n/c)

Line level audio input 2

(0 dBV)

Line 2 +

Line 2 -

Line 2 Screen

Line level audio input

(0 dBV)

Line +

Line -

Line Screen

70 V/100 V

70 V/100 V +

70 V/100 V input

GND (n/c)

*See footnote on Page 8

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