I'm fairly impressed so far with this subwoofer. A few people heard it today, and couldn't believe I was running a single 12. 1st off, if you're looking for a nice, civilized subwoofer, this isn't it. When you want something just to break doors down and steal your oldest daughter, this could possibly be the subwoofer. While comparing it with the DD 9512 directly, it has better musical abilities than the DD, and doesn't give up much at all in pure loudness to the DD. I'll have them both on the meter later this week, so I'll know exact numbers then.

My 1st impression after setting the gains to give the sub a clean 1500rms, which is rated power was that this thing needs more. I then bumped it up to right at 3000 watts, and in the 6th order, it seemed to be a bit overkill. I could get the sub to stink rather easily, although it cooled off extremely fast once I backed down a bit. The cooling system seems to work extraordinarily well on this sub. I kind of figured in a 6th order, 3000rms may be a bit much, but decided to give it hell anyways. Although I would feel comfortable doing bassrace in the bandpass with 3000 watts in my setup. I think that for daily driving, 2000-2200 watts would be perfect.

Since there are really no posted T/S parameters on these, I'm going to place a guess that the Fs is in the low 40hz range. Couple that with the fact that my box peaks at 44hz, and my car peaks at 44 hz, this sub can only be described as brutal. It doesn't have that mechanical sound that I've come to hear from most SPL oriented drivers, especially the DD 9500's, which is great. It's a bit smoother sounding, but at least in my setup, where everything kind of collides at 44hz, this sub is a beast.

If I wasn't enjoying it so much, I'd do some max power testing on burps, but I'm sure IA has already done that, so I'll stick with around 3000rms on it, and continue to just smile when people don't believe it's only a single 12.

I have 2 kicker 2500.1s do you think that this sub could handle a 2500.1 daily?

If you know when enough is enough, I don't see a problem with it. Just be smart about it.

Thanks I can't wait for these things to come out in August. I want to get my hands on a couple of the 18's or 21's.

ill have my setup completed on tuesday,, itll be two 15" DP's on an IA40.1.. ill be going to the comp at centerville on the 30th.. so ill see what kinda numbers i can hit..

How did you get them so early? Let me know how they do at the competitions. How much of a difference do you think there will be in the output between the 15's and the 21's?

yea, they have the 15's out, just not the 18's or 21's.