Ok, I don't know what kind of music you listen to, so your mileage may vary.

I just got through first sub tests. I would have done a lot more, but I can barely even type right now - it was SO cold out today. I hate working in the cold. Next weekend I'll borrow a heater for the garage.

Listening to Altern 8 and Aphex Twin the sub went very (very) low and was enough to rattle the entire car (since I was only testing, my interior panels and trunk panels aren't secured. The subwoofer wasn't bolted down either. I still have to make adjustments to the cut-off frequencies and gains for both amplifiers. With some Altern 8 tracks I was still getting too low frequencies to the front woofers that my doors vibrated like hell (and they're now well insulated and pretty well dampened).

So in short, I think the 8.2 will be more than enough bass for my needs. Now I just have to find a balance so I get acceptable bass on regular pop/rock music without completely devastating bass on techno and ambient.

Bruno