Tarun
I’m not sure but this might answer your question about the subwoofer distance.
http://www.usa.denon.com/Denon_Audyssey_FAQs.pdfQuote:
7. My subwoofer is physically closer than the distance reported by MultEQxt. Why?
Many powered subwoofers do not provide the capability to defeat the built-in low-pass filter. These filters, by their nature, introduce additional delay in the signal and MultEQxt finds that and reports it. The optimum solution is to turn the filters off (often called “LFE mode” in subwoofers). If that is not possible, set the low pass frequency to the highest possible setting and leave the distance reported as it. MultEQxt will compensate for the added delay and time align the subwoofer to the satellite channels so that the optimum blend is achieved.
I found this when I was researching what AVR to buy.
