On-wall's are just not going to work very well in our space, so....


"The remarkable UIW BPZ/A is a bipolar in-wall/in-ceiling loudspeaker. It is intended for use as a main system speaker (whose bipolar pattern gives you tremendously enhanced spaciousness plus unequaled dispersion throughout your room). In addition, it is a superb rear/side surround speaker for Dolby Digital and Dolby ProLogic systems and is also perfect for producing exceptional sounding music anywhere you want it. Creative design has resulted in a compact unit with a grille which is almost flush with the wall. A complex Linkwitz-Riley crossover seamlessly blends two 6-1/2" cast-basket drivers with two 1" pure aluminum dome tweeters for superb dynamic range and exceptional sonic performance."

UIW BPZ/A Specifications:

Mounting Dimensions - Outer Flange Size: 8-1/2" W x
14-3/4" H.
Cut-Out Size: 7-7/16" W x
13- 5/8" H.
Depth from Flange**: 3-3/4".
Frequency Response: 26Hz -- 30kHz.
Drivers: Two 6-1/2" cast-basket drivers with two 1" pure aluminum dome tweeters.
Rec. Amp.: 10 -- 300 watts per channel.
Nominal Imp.: 4 -- 8 ohms.
Retail: $750 pr.

<img src="http://images5.fotki.com/v53/photos/6/62735/358474/DTbipolarsurround-vi.jpg">

Any truth to this? Something to do with the more diffuse soundfield being preferable for the less acute nature of Pro Logic.

DefTech are being enormously optimistic regarding the abilities of a coaxial flush-mount given their product description. I'm sure they will sound okay for an in-wall, but have a look at versions by NHT (fine crossovers) and the superb Monitor Audio line (they have their own enclosures).
In-walls are a massive compromise on sound quality - well worth investing in a decent set.

And I heard these in the store. For an in-wall, they sound very good - but make sure your install is done right. Best case would be a front ported speaker embedded in your wall, but these do give a nice soundstage.
You will need a sub, the response on these seemed to trail off above 60hz...

Imaging is sacrificed for soundstage. The use of which type of design is also dependent on the room. If your room and placement options don't conform to Dolby's specifications - this can have more of an effect than the use of dipoles for surrounds. In a past setup I used dipoles mounted on the ceiling, since my listening spot was against the wall and the results were much better for all formats compared to single poles next to my head.

with the "rears" actually directly to the side of the main listening position. Maybe I should try out the DefTech BP2s that are in my bedroom in that location and see how it sounds...