In wall vs regular speakers?

In my case the in-walls that I’m using fire in both directions in dipolar configuration, and have a very wide dispersion of sound... Even in the case where one room has an open side to an ajacent room. For the enclosed room side placement is just as effective as rear only install. Stereo center imaging is a touch more pronounced with the rear install, but both placements acheive outstanding full/ambient surround.

I initially had on-walls in both setups but for space, or a more stealth-WAF decided to try in-wall in the open room. Then once I heard the performance and felt I was missing absolutely nothing, decided to switch in my main listening area. Honestly can’t comment on monopole designs as I’ve never used them.

A buddy of mine had tower fronts and in-ceiling surrounds, and I thought it worked surprisingly well.  The rear speakers being behind the listening positions produced a nice, diffuse surround sound that created a very seamless and immersive experience.  That's what I'd do if I was creating a home theater since it worked so well, with the obvious added benefit that the speakers were completely out of the way and basically invisible. If you're thinking of getting seriously into surround music I'd probably use traditional box speakers. 

Sounds like you don't use a center channel speaker?

I do, I forgot to mention that I have just ordered a matching Rethm center, should be here next week, looking forward to it.  Before that I used a paradigm center.

Although I can say that spending a week or 2 now without a center, I can honestly say that the two fronts are doing a good job at mimicking it.

If you're tight on space, in-wall speakers can be a good option, but I'd recommend getting sealed units that have their own enclosure. This is essentially like placing a shallow bookshelf speaker inside the wall, and will give far better acoustics that an unsealed unit. Definitive Technology has some good options in their UIW line, as do many other manufacturers. Let me know if you need any help picking out some appropriate options, and I'll be glad to assist in any way I can.

Take care,

-David

In walls can be used for rears without much compromise since rears are usually for ambience and surround effects.  I personally wouldn't want to rely on them for fronts and center, and an in wall sub makes no sense to me at all