The difference is the ability to shut them off. You gain that ability with a switch and that sounds like it solves your problem. If the call for constant power use constant power. It took longer to complain/question Oracle than it would to try their solution.
i suggest a combination material Butyl/acoustic foam. Best results but a bit more expensive. Saves you a lot of time in applying both. Soundskins makes a nice product.
No I'm not sure, just concerned, I would assume the manufacturer would have taken that into account. Different woofers have different travel AA makes stuff with 32mm of xmax where polk goes as low as 7mm.
I would be concerned about the excursion of the woofers in how close they sit to the bottom of the seats. The angle of the box does not match the angle of the seat, so the woofers are closer to the seat towards the rear than they appear to be from the front. Also if you wanted to get the Xmax...
Yeah thanks for sharing the cover king thats awesome. Keep in mind that if you plan on going for roll on sound deadening your really need to hit 80% of the surface to have a meaningful acoustic effect. If you are going to do it properly expect to lay 80lbs of material. If you use less and cover...