The DVR522's features list under "TV2 connections" clearly states: This feature was heavily promoted by DISH when the 522 was coming out so it's hard to explain the confusion in the manual.
1 agile modulated output (channels 21-69; 73-125); stereo audio.
My User's manual states the quote I posted earlier. There is nothing about any agile modulated stereo audio outputs for ch 21-69 on tv's 1 or 2. In fact, it states the same information for TV1. It says the audio will be output into stereo if the RCA connections are used, and the audio will be output mono if the coaxial ports are used. Is this a typo, or is the manual correct? Everything does sound like mono coming from both speakers....