Rear Panel:

1.  XLR INPUT:  This jack accepts XLR input connections, with either balanced or

unbalanced wiring. The signal of the XLR INPUT is summed together with
the TRS INPUT through a balanced input amplifier. So, either may be used as
an input or mixed together. Input specifications apply to both inputs. The
INPUT CONNECTIONS wiring chart of an XLR connector is as follows:

INPUT SIGNAL

XLR CONNECTIONS

+

PIN 2

-

PIN 3

Shield

PIN 1  

2. TRS INPUT:  This jack accepts a TRS connector, either balanced or unbalanced

wiring. For balanced wiring, a 3-conductor TRS plug is necessary. The input
connections of the TRS connector are wired as follows:

INPUT SIGNAL

TRS CONNECTIONS

+

TIP

-

RING

Shield

Sleeve  

Unbalanced wiring works with either a 2 or 3-conductor TRS connector. A
2-conductor TRS plug automatically grounds the minus signal input, whereas
a 3-conductor TRS plug wired unbalanced provides the option of leaving the
minus open or grounded. We recommended that you ground the unused
input.

The TRS INPUT is summed together with an XLR INPUT through a balanced
input amplifier. So, either may be used as an input or mixed together. Input
specifications apply to both inputs.

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