[black95gs-t]

the 154 that they got out of the 12w7 was A) not in a car and B) not set up for daily usage. it really doesn't matter what the company says about their stuff, the info they give you is rarely useful with any real system. the 154 was done in a lab when they finally finished the sub and were getting the final figures. it was done on a burp(which might i add you do not want to do unless your car is set up for it. burping is an easy way to totally fry up your entire electrical system if you don't know what you are doing.) realistically, in a hatchback with a single 12w7 firing up, with 2 phoenix gold titanium 600.2's you might get about 145 depending you how you set the whole thing up. more than this is obviously possible, but that is a pretty attainable goal. i know i have gotten on here and preached about the w7's, but physics still apply. there was a very good reason that i had 4 PPI PC 21400.2's on 2 W7's. they are power hungry and without the proper setup and power they are just like any other overpriced speaker. and a sealed box in an SPL competition is a joke for the most part. especially with less than 3 drivers. it takes a much bigger amp to make a sealed box as loud as a ported box. when you are talking about SPL, using a sealed box would be like spending $8000 on engine mods, and still have the stock intake exhaust and fuel delivery. sealed in SQ on the otherhand, depending on the driver can be a good idea. plus it usually sounds better. but sealed boxes were not designed for SPL.
J