15
Remotely Connected External Amplifier(s) Do Not Turn Off with XDA-1
Check the following:
• Make sure the 1/8” plug is connected between the XDA-1 trigger output and the amplifier(s) trigger
input(s).
• Make sure the total consumption of the connected devices do not exceed 500mA
• If you have spliced the plug to one or more amplifier turn on inputs, remember the center pin is positive
and the outer shield is negative. This output is 5 to 12VDC.
“Hum” Noises
• This problem is more than likely caused by a “ground loop” in your system, rather than a fault in the
XDA-1. Follow these steps to isolate the main cause of the hum; there may even be more than one.
Remember to turn off all components in your system (including the XDA-1) before disconnecting or
connecting any cables.
Disconnect the following items in order, and check each time if the hum has gone away:
• Disconnect all cables which come from outside the room, such as cable TV, satellite TV, or roof top
antennas. Make sure that they are disconnected where they first enter the room, so they are making no
connection to the XDA-1, the TV, or any other component. If the hum is caused by the cable TV line,
you will need a “ground loop isolator.” This is an inexpensive device fitted in-line with the coaxial cable
feed. Contact your cable company or your Emotiva Dealer for assistance.
• Disconnect any component which has a grounded power cord.
• If the hum persists, disconnect all the source components one at a time from the back of the XDA-1
until you identify the problem. (Ground loop isolators are available for audio lines and video. Ask
Emotiva for assistance)
• Try moving the speaker cables away from any power cords. Try just one speaker, connecting it to
different channels and see if an amplifier channel is bad.
• If you are still having a problem, remember that Emotiva’s technical support staff will assist you.
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