You seem to be getting a handle on the situation, but you might still find some insight in this other thread -
"in-wall" speakers? | AVForums
Summarized -
- The range of speakers available to you is huge, from tiny completely invisible In-Wall Speaker, to In-Wall speakers that are the equivalent of floorstanding speakers.
- Give due consideration to what it means to place speakers In-Wall and/or In-Ceiling. They do not magically appear in place, and more importantly neither does the wire. Generally that means cutting holes in your walls and ceiling to put the speakers in, but also tearing up your walls and ceilings to get the wire in place.
- Consider the construction materials of your walls, if they are standard wood frame covered with plaster board, then you should have no problem. However, if they are brick, stone, masonry, or non-standard construction, etc... then your best bet is to build a
False Wall made of wood and plaster board. This applies mostly to In-Wall speakers.
Most people who are going through the trouble of building a False Wall will also build in a place to mount the TV and the rest of the Audio and Video Equipment.
Some build
Floating Walls with back lighting making the whole unit look like it is ...well... floating.
There is an existing Home Cinema DIY forum, and you should be able to find many examples of False and Floating Wall projects -
Home Cinema Building DIY | AVForums
Here is just one example of a very basic Floating Wall with in-wall speakers -
Living Room Flush Floating Wall 5.1 Build with AV Rack | AVForums
One last point, picking In-Wall and In-Ceiling speakers is like picking any free-standing speakers, you have to choose the speaker that does the job you need done. If you want big floorstanding like sound, then you need to pick in-wall speakers that mirror that. If you want the equivalent of tiny Satellite speakers, then you have to choose the speakers appropriately. If you want speakers capable of standing on their own as music speakers, then again, you have to choose appropriately.
So, it is important for you to truly know what it is you are trying to achieve, before you start buying equipment. Further it is important for you to understand what the installation of these speakers means, before you start buying speakers. In-Wall are not so complicated you simply drop wire down to a Terminal Plate below the speakers. However, if you want full in-wall wiring back to the amps, you have to understand what that means in terms of getting the wire from the speaker to the amp.
I have nothing against In-Wall or In-Ceiling, but you need to understand it before you commit to it. That's all I'm saying.
Steve/bluewizard