I've got two Infinity P362's as my LR, and I will likely add a PC350 as my center. (No, I'm not lifting my DLP another 5 feet into the air to add another P362 even though vertical centers do better for off-axis listening. See, I do read the site!)
I found this old thread... However, it didn't offer much.
http://forums.audioholics.com/forums/showthread.php?t=26386
I also read this... (There are tons of threads on AVS about boxing in-walls vs. leaving them be)
http://www.audioholics.com/tweaks/do-it-yourself-diy-topics/in-wall-speakers
To the meat of my question, I want to add in-ceilings and in-walls for surrounds. To me, bookshelves on stands aren't very attractive. The ones that are out of of my budget. I know Niles Audio, Triad, Speakercraft and RBH make some good in-walls. Heck, I also know about going the Monoprice and the brands sold at Parts Express route. My issue is that I do listen to multichannel music (DVD, DTS, Blu-Ray and HD DVD--I will backfill SACD and DVD-A later). I read that it is better to match the surrounds in that case. Therefore, I'm looking at the Infinties as well. My budget (E-bay!) is preferably under $200+shipping for the four surrounds.
My AVR is a Harman Kardon AVR-247. My ceilings are standard one story 10 ft. high. (8 ft in the rest of the country, but I live in TX.) My distance from LCR to rear surrounds (back wall) is about 14 feet. My sweet spot (for now) will be a 5 ft. long couch. I'm not that concerned about off-axis listening because I don't want guests so comfortable that they stay longer than they should!
Hopefully, I didn't ask a totally newb question and gave enough info to get a few answers.
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Oh yeah... 30% music, 50% TV (mostly 5.1 DD high def but some two channel), 20% movies