AVS Club Gold
Join Date: Aug 2007
Location: Smith Mountain Lake, VA
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I was not able to find a manual on the operation of that AT&T box - the audio outputs may be variable as opposed to fixed (which is what you really want for your application). Did you try increasing the volume setting on the AT&T box for your test.
How did you connect the audio source directly to the distribution panel?
What was the audio source?
The little black box does not appear to be part of the LeGrand lyriQ line. What brand is it?
This type of box is intended to convert line-level single-ended audio signals into a format that is capable of running long distances. So the long distance, in and of itself, should not be a problem. If noise is picked up it is usually hum not hiss.
It seems that your system may be composed of different brands. You mentioned Russound - what parts of the system are from Russound?
Regards, Frederick C. Wilt