ISP Technologies Tripower 900 - Manual (Page 5)

CONNECTION DIAGRAM
BALANCED CONNECTION DESCRIPTION
The ISP Tripower series has balanced XLR and ¼” phone inputs and
outputs configured to AES standards (Audio Engineering Society). These
connections are connected in a loop through configuration and will accept a
balanced line-level input. The standard phase configuration is that pin 2 is (+),
pin 3 is (-), and pin 1 is shielded ground on the XLR. On the ¼” phone jacks
the configuration is Tip is (+), Ring is (-), and Sleeve is ground.
NOTE: IF AN UNBALANCED SIGNAL SOURCE IS USED, THE MALE XLR AND ¼”
PHONE OUTPUTS FOR LOOPING THROUGH TO ADDITIONAL POWERED
CABINETS WILL ALSO BE UNBALANCED.