Well, I say 40 hertz, because I've tried to port a box for my current subs before, and the results were disastrous. I only had about 1/2 the enclosure size they needed. It sounded horrible, and it was tuned to 32 Hz. I want louder, but still some quality. Maybe 40 is too high, but something higher than 32. 36 sound good? This is what homework is for.
So, I have roughly 2 cubes per sub to port them with. I can't find the specs on the Alpines, and I can't calculate what the Adires want. Grr..
Budget is tight, so I'm losing the Res and Infinity's, not enough good heard in their favor.
As far as I'm concerned, I like the Alpines for that hint of cosmetics, and I like Adires for the lack thereof. However, the Adires have a curiously small magnet and simple spade terminals. Alpines look all around sturdier, have bigger magnets, and better terminals.
The odds are in favor of me going with the alpines, unless there is something I'm not seeing yet.