Originally Posted by Nuance
Room will treatments will help a lot too, and will resolve issues room correction cannot (like decay times/ringing).
This is OT but I'd like to add that positioning of multiple subs can go a long way improving the SQ in the room even without formal treatments. And though room treatments are obviously of great value to SQ, they're not easy to get right- certainly a challenge to the DIY'er. I've decided that with the results I'm getting with Audyssey MultEQXT32 and 2 carefully placed subs, that
1. I will defer room treatments for now because of poor WAF and expense. and
2. I'll probably have a professional assess the room acoustics and do an estimate if and when I do consider treatments. See this thread
for cool ideas.
As to decay times/ringing, I have to respectfully
disagree with your statement. DSP RC technology has improved rapidly over the past few years and has become very sophisticated. The topic is very technical (kinda over my head actually) but I've read multiple documented instances of measured improvements in such areas with the use of newer versions of good DSP RC, like Audyssey and ARC. If you're interested, do some searches or take a look at these links below. IIRC Kal Rubinson has posted waterfall graphs in his column over the past couple years of Audyssey, ARC and perhaps Trinnov. Here
is a brief post by Kal with preceeding discussion on the topic including craig john's postings here
There is additional info on this in the Audyssey thread-for a brief description of Audyssey corrections in the time domain see here.