Maximum dimensions for FL speakers are 19" wide, 15" deep, and the height is flexible (shelves above are adjustable). For aesthetics and to keep my shelves where they are, 12-3/8" is max height. However, I could remove the shelf above the speaker and be able to go to 17" high, but then I'd be removing a shelf in my EC. If larger speakers would be benefit my room’s size, I’d consider this option.
Maximum dimensions for CC depend on if I go above or below the TV. Below TV: 24" wide, height is completely variable (adjustable shelf), and 11" deep. Above TV, 68" width, 9-1/2" height, 14" deep. I'd like to stay below the TV to try and keep all of my fronts as close to the same height as possible. The shelf above would put the speaker about 70" off the ground.
I haven't listened to any speakers yet. All I really have in my area is Bestbuy, which has a narrow speaker selection and a poor listening environment from my experience. I wish I could provide you guys some input on what I've liked, but I think I'm just going to need to try and narrow my options down and then try them out in my home.
To consolidate the feedback here and my own findings into my current product ideas:
Sealed: NHT SuperOne 2.1 & Ascend HTM-200 SE
Front Ported: Polk RTi A1, Elac B5.2, HTD Level Two
Larger Front Ported (removing the shelf above to make them fit): Polk RTi A3, Elac B6.2, HTD Level Three
My main decision now it seems is between front ported and sealed. Since I’ll be running a subwoofer, it seems like a sealed unit might be a better application considering the entertainment center?
Centers: I'd be looking at matching units for any of the above speakers.
If I go with front-ported for my fronts, I’m considering rear-ported Polk S10's for rears primarily due to their compact size and aesthetic. From what I've researched, rears don't need to match fronts. Would this be okay, even with their small woofers relative to my fronts? Or if I do sealed speakers for my fronts, should I also opt for sealed speakers for my rears to match the sound?
For subs, I'm considering HSU-VTF 2-MK5, Monolith 10" THX Select Certified 500 Watt Powered Subwoofer, SVS PB1000, or RSL Speedwoofer.