How to get the right T.L. for fostex drivers?

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Hello all. I have been doing some research again on my next project. I am looking at choosing between acouple drivers?

1. Fostex ff225wk Never had it but, have heard good things about it. Tweeter add at 10khz.

2. Mark audio Alpair 10's Same as above.

Well I am looking to get the most out of the drivers I use listed. I really don't want to go ported or a horn box. I would like to use the Alpair 10's but wonder if they can handle movies and music without a sub for awhile? That is why I was looking at the ff225wk drivers. This will be my last build and buy for the year due to my other projects of helping a friend build his speakers. I have never built a T.L. and hopes it will be one of my better builds. I have really enjoyed my modded fostex fe126en driver but, lack bottom end. If I could find a 5 inch or a 6 inch fullrange driver that did it all from top to bottom with out help I would be happy but, a 4.5 inch fullrange is not going to have the bass of a 8 inch fullrange driver. So if anyone can help me or point me to some plans or info that would be great. Thanks jm