LA Audio Electronic SPX20 User Manual download pdf (Page 6)

Page 6

Pin 1 = ScreenPin 2 = Hot (+)

Pin 3 = Cold (-)

PUSH

Fig 2.6.3: Pin arrangement for XLR inputs on the SPX20

Pin 1 Screen Signal ground

Pin 2 Hot Signal +

Pin 3 Cold Signal -

For unbalanced operation join pins 1 and 3 and connect to Screen (signal

ground) and use pin 2 as Hot (signal +).

Input 1 also has a pair of front panel inserts on TRS jacks which are wired

as follows -

Sleeve

Screen

Ring

Cold (-)

Tip

Hot (+)

Fig 2.6.3: Pin arrangement TRS jack inserts on Input 1

Tip Hot Signal +

Ring Cold Signal -

Sleeve Screen Signal ground

For unbalanced operation join Ring and sleeve and connect to screen

(signal ground) and use Tip as Hot (signal +).

Plugging a mono jack into these inserts effectively unbalances the

connection.

Sleeve

Screen

Tip

Hot (+)

Fig 2.6.4: Mono jack pin arrangement

Tip Hot (signal +)

Sleeve Screen (signal ground)

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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LA Audio Electronic SPX20 User Manual Page 6