November 11, 1999As a result of some of the posts on the Digidesign Users Conference regarding polarity when monitoring with the ProControl monitor section, we've performed tests on the AUDIO OUTPUT connector to determine if a problem exists. We have discovered a reverse polarity condition that affects the Control Room Out left/right, Slate/Dub Out left/right and Control Room ALT Out left/right connections. The (+) and (-) pin locations for these outputs on the AUDIO OUTPUT D-sub connector are reversed from what is shown in the ProControl User Guide. Using a stereo monitoring setup as an example, if your monitor amp, powered monitors etc. inputs are wired as pin 2 hot (+) and pin 3 cold (-), the corresponding pinouts on the ProControl AUDIO OUTPUT connector (Control Room, Out left/right, for example) would be sending these signals as pin 3 hot and pin 2 cold. The simple "fix" for this is to reverse the pin 2/pin 3 locations at the XLR's of your cable assembly. There are also commercial turn-arounds available for this purpose from companies like Switchcraft and Whirlwind. If your cable harness fans out to " TRS phone plugs, reverse the tip and ring points. We apologize if this has caused any inconvenience. To ensure all ProControl users know about this, we will be sending out a letter to all registered users in the near future. See the Acrobat File at www.digidesign.com Digidesign Product Management