Looks like a great sub.Real low Fs, andfairly low Qts. Should hit lows pretty good, but still punchy enough for everyday listening. Let us know how you like em. Just hope you've got a large amp

 

Kicker 2500.1 per 15 . Prob tune it around 37-38hz so I get the lows. (Sounds weird lol but that sub is meant to unload)

 

Perfect! 37HZ I think is the perfect tuning frequency. I had 2 12's in an 8 cu. ft. box tuned to 37HZ and it hammered. Only problem was, the subs had an Fs rating of like 35-36, so some notes would flutter. But for the most part it was awesome. The 15's should have no problem playing that low.

 

Well usually I can't stand 35hz or higher. The bass isn't low enough for me, most my boxes are tuned around 32hz (and it is still hard to pick up that one note in Betcha Can't Do it Like Me lol). But I don't know if you have ever worked with the DD9500 series, but these subs are like a brother to them, they reccomend a tuning of 40hz.

 

Well I got a chance to measure out a friends Magnum and I have ennough room for the 4 15s. It is close but there is room, along with room for 5 HC2400s under the floor I believe (replacing stock battery with one).