specs

Hello all has anyone used these by chance? Looking to replace some old alpine 610c sps 6.5 comps. My amp can push 200 watts rms x 2 any suggestions on alternatives also appreciated.

i was wondering what the following parameters are for the BRZ15D4. i have two of them wired in parallel (if that makes a difference). i need the folowing parameters for the subwoofer. Qts vas Fs Re Le Xmax Z Qms Qes SPL Pe BL Dia SD thanks a lot