ART Pro Audio 311 - 2way Crossover w/ Subwoofer Out - Manual (Page 7)

CONNECTIONS
It is easy to interface the unit with a wide variety of equipment. The rear
panel has balanced XLR and ¼” inputs as well as unbalanced ¼” outputs.
XLR INPUT JACKS (REAR)
The XLR input connections are balanced and follow the AES standard
for wiring: Pin 1 = Ground, Pin 2 = Hot (+), Pin 3 = Cold (-). This input
parallels the ¼” inputs.
¼” INPUT JACKS (REAR)
The ¼” input connections are balanced with Tip = Hot (+), Ring = Cold
(-), and Sleeve = Ground. This input directly parallels the XLR input.
¼” OUTPUT JACKS (REAR)
The ¼” Output jacks are unbalanced. Tip = Hot (+) and Sleeve =
Ground. They are used for sending signals to amplifiers, or other
unbalanced configurations.
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