Originally Posted by Skylinestar
Do you think the AM7215 will sound better than a 4722 ?
Depends on application.
The XO is a bit high for a 15" woofer, and it shows in the directivity index where the woofer beaming is evident.
This is likely to keep cost down, spl and reliability and power handling up.
If that off axis isn't going to pose reflection problems (huge spaces, outdoors, and various PA applications) it should work well.
In a small small room you'd probably want something more accurate.
The m2 is same basic design but with accuracy as the priority, so it's a good example of the differences.
The 4722 is a cinema specific application design - it's excessively bright and focused on the top register to punch through the AT screen by design so man have complained about its sonic signature when not using it in the designed application. (Example not behind a screen and not far away LP). You can probably EQ out some of that too.
It's important to match application to speaker and maximize the appropriateness of the speaker you choose towards accomplishing your goals.
The 708 would likely sound "better" up to the point it doesn't. Unless you specifically want excessively loud capability it should work the best. Home reference level is 78db c weighed (+20db capability for peaks) - that's about 100db peaks. In a small or medium sized room that's loud. Many don't watch movies or listen to music that loud - especially for prolonged periods. The louder it is the less you want to tolerate or enjoy it for prolonged periods of time. You'll also appreciate better acoustics and higher speaker accuracy - lack of the "bad stuff" allows you to listen and enjoy louder without finding it as offensive.
Choosing a speaker is about matching your goals to the product. There is no right or wrong - just a shifting of priority. Some of that priority is in individual.