35"H x 10"W x 6"D In-Wall speaker dimensions available. Line array?

EDIT: I now have 35x10x10 to work with. 1.2 cu.ft. per side.

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Need some suggestions for my Cousins living room speakers. The internal volume would be about 1.2 cu.ft. when using 3/4 wood. These will be ON-WALL, not in-wall like the title suggest. "35"H x 10"W x 10"D

He's received permission to build speakers into fake pillars. He's not allowed to do anything else. hahah

So, I need help figuring out what type of speaker to go with. They listen to POP and watch a few movies.
Subwoofer won't be a problem.

Since the speakers are unfortunately going to be located ABOVE ear height, I'm thinking either a line array or a waveguide speaker of some type?

We CANNOT build the speakers anywhere but in the red box located in the pic below. Can't go below (furniture & firewall there) and can't go deeper (wall framing).

Btw, normal ear height is 6-10" inches BELOW the bottom of the speakers.

Edited by CZ Eddie - 1/21/13 at 6:58pm

Thanks, Jay. I really appreciate the offer!
I'm looking for something with a bit more punch/SPL right now. This is a HUGE, open room these are going into.

I can now have 35 x 10 x 10 which gives me 1.2 cu.ft. to work with.
Edited by CZ Eddie - 1/21/13 at 6:53pm

If I end up going with a simple two way, I'll build this one (link below) since I already have all the drivers & in-wall designed crossover components.

http://www.oocities.org/woove99/Spkrbldg/RS180_2way/RS180_2way.htm


But I really want something with higher sensitivity and bass capability.
Right now I'm thinking about an upside down Econowave.