I finished a T4 with the Polk XM tuner and so far so good....
I used RS232 for control but was shocked by the lack of 0, 1-9 commands for direct channel input.......I ended up using IR and RS232 just to get these commands into the system......
Haven't finshed the final tweaking and the page is generic............check out the Polk website for the commands and the tech bulletin about firmware upgrading the POLK when you have issues......
