stopparde01
Member
I'm shocked you noticed a difference at all if you didn't add an aftermarket amplifier. I pretty much gutted all the factory speakers and went aftermarket, but I added a 5 channel Alpine amp to power everything. I have to admit that turning my volume to 4 out of 11 can be overkill though.
Mmh, in my standard audio, just replacing the stock speakers with the kappa infinity the change was dramatic.
Mostly in the highs and mids, that went from muddy to crisp (flat eq)
The NVX sub addition made it perfect.