I have a Blaupunkt CD70 in the my car, but find when pumping up the volume, a bit too much distortion is experienced, so think it's time to upgrade the standard speakers in me my99. Popped down to Halfords and listened to some Infinity's, very nice. I don't want to put a sub in the back, but like bass with my music.??

Any advice would be much appreciated as to what speaker I should try listening to.

Regards

Mark