Initial general Question:
- Does the 165w come with the mid and tweeter?
- I also didn't see the T/S specs for that particular driver. Any idea what they are?
Responses to your questions:
Should you do this?
I think so.. I've heard that Car Audio drivers don't usually do so well in a home audio application, but if you've already got them and are willing to experiment a little.. I say try it and see what you think. Buying new drivers, especially from a well established DIY design, specifically for home audio will probably give you better performance though. The final answer will really depend on what you're looking for.. If it were ME, I'd probably slap together a quick and dirty box and see how it sounds with the crossover you've got. If it sounds good, build a "proper" box.
Should you do a MTTM design?
No. I don't have the authority to back this one up, but I've heard that a dual tweeter produces some fairly bizarre sonic charateristics. Stick one or go with many.
Use Crossovers or design a new one
If the crossovers are designed for the specific drivers, they may work out fine. Are they active? Or Passive? Active will almost surely work out fine. Passive -- I don't know. Again, I'd try a quick and dirty build with the crossover on the outside of the box and see how that goes. Given your backround, I'd assume you'll know if the crossover works with the design or not.
Box Design.
Unibox or WinISD are two freeware programs that will help with the box design. Plug in the T/S parameters and it'll give you the dimensions of the ideal box.
JCD