Well my sunroof doesn't like excess debeez, rather not do more damage to it.
Can't for the life of me decide between these two subs. I installed a Kappa 12.1 in my brothers car in a 1.1 cuft sealed and I love it.
Can't find much on the Zetar, but the carbon fiber catches my eye.
As for the Kappa.. 96db sensitivity.
Kappa:Infinity Kappa Perfect 12.1 12" 4-ohm subwoofer at Crutchfield.com
Zetar: Test Report: Planet Audio Zetar Z-12 Subwoofer
Power: 20.1 @ 4 ohms. (450w @ 12v)
Also, box recommendations for the Zetar?