if i remember correctly all of the Infinity range of speakers are fantastic EXCEPT the reference series. the kappa and perfect series speakers could blow eardrums if amped correctly - i used to have kappa series 6" splits in the front and 6x9's in the rear all amped correctly and when adjusted properly there really is no need for a sub! (i had two 12"' cerwin vega's anyway!)
hope this helps!
PS: they could have changed series by now - not certain
- BLO GMH
-> 1987 XF Fairmont Ghia - Silver, 4.1 EFI, T5, LPG, Clive Cam, Megatork Valve Springs, Crow Pushrods, Crow Timing Gears, Pacemaker Headers, Hi Flow Cat, Mandrel Bent Exhaust, ESA Straight Through Muffler, Grey Velour Interior, Full Electrics, Trip Computer, MOMO Race Wheel, King Spring Super Lows, Monroe GT Gas Shocks, Nolathane Bushes, EL XR8 Rear Axle w/ 3.45 LSD, Snowflakes