Accurate bass is hard enough to reproduce in a large room, within the confines of a car interior it's harder still. What you normally wind up with is a load of harmonics and not a lot of low end information.
Too true Hdi but with the right set-up you can get some really good sounds.
When I had the Primera I had two 12's both being supplied by 2400 watts of pure RMS bass each.
It honestly shook every single panel on the car.
But you could hear every single different bass note as well as all the high end notes because of the set up I had.
The bass did hit hard but the Power Cap I had did it's job well to be fair.
That wasn't the only amp I had in the boot so I needed the Cap.
It was a 1200 watt Class D amp bridged to 1 ohm to produce 2400 Rms watts of pure bass.
I also had a normal mosfet amp powering some 6x9's that where mainly used for top end sounds.
And also had the components up front powered off the head unit. Sounded awesome.