In-wall Speakers advice
 

Greetings , I have a few general questions about in-wall designs :

1. Do they actually need a box and then go inside the wall or they come only with the baffle ?

2. are there any good 2-way designs available that i can build myself ?

3. If i build a gypsum wall , Is it strong enough to hold them ?

And another thing , If i decide to go with a regular 2-way design from madisound or something ... and actually stick it inside a wall , do I need to modify the crossover because in a way the baffle size changes ?