PUSH
Pin 2 = Hot (+) | Pin 1 = Screen |
Pin 3 = Cold
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 | Ring | Tip |
Screen | Cold | 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 | Tip |
Screen | Hot (+) |
Fig 2.6.4: Mono jack pin arrangement
Tip Hot (signal +)
Sleeve Screen (signal ground)
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