Yes I have, and I just don't find the alpine X appealing. Call me what you want, frankly I don't care, but thats my 2 cents.Lol please have you any real experiance with audio?
Alpine type X is SQ based sub it sounds really good.
I gave my 400rms kappa pefect over 800wrms daily and it never had a problem.
And I guess I had a shitty Kappa perfect.
i was running it with a jbl 300.1 with 6db Bass boost.
I think I will try to buy 2 10.1 Perfects for a new project car.