If your mini-van has a premium sound system and you have a speaker cracking at the back left side of the car, the cracking sound is coming from the sub-woofer.

After searching and searching, I replaced mine purchasing a bazooka sub speaker. It is not the exact same dimension, but it is very close. The original speaker is one-ohm impedance. The bazooka has two 2-ohm coils. So, you have to wire the bazooka coils in parallel to obtaing the 1-ohm equivalent load. I transferred the outter spacer from the old sub and installed it in the new sub. The bazooka handles more power that the OEM. So, it should outlast your van.

Bazooka Model #: WF621.5DV is the one you need @ www.bazooka.com

I tought about sharing this tip.