Gotta love alpine. I've had alpine for about 6 years and I've always loved their subwoofers. One day my type r stopped working. After some youtube looks up it was one of the coils. Lasted me about 7 years and 3 different cars. So bought these new upgraded ones im taking and love them so much. For right now i have an kicker zx 1000. 1 amp and it bangs. But thinking of a bigger kicker amp. Just don't know which one. Definitely worth the money.