its all about quality in audio installs and the first thing you should upgrade is the head unit..... the very last thing to be upgraded is the speakers.
if the quality of the signal goin to the speakers is rubbish, it doesnt matter how much you spend on them, the sound they produce will be rubbish also.
this sub and amp package was ok when new a few years ago (i know cos i used to fit them all the time) but they werent brilliant.
they were £149.99 when brand new....
but like i said, if you dont have a decent head unit, it will sound crap as you wont be able to balance the trebble and bass corectly within the car.... it will dsitort.
anything you hear about "upgrading speakers" before the rest of the system is talking crap and has never listened to a high end audio install before.
and im not talking alpine jvc or sony here...... im talking Nakimichi, Rainbow audio, Genesis... etc etc.:grinning: