Losing 6 1/2s
I have the JL stealthboxes - it replaces the speakers in the rear deck - I do not have the HK system, so I only know of the full range ones in the deck - but they are GONE.
THe Jls sound very goo d- not too boomy - but can be loud if you want. I have mine hooked to a 300.4 amp (although I like AC325s mounting location better than where the place that mounted mine put it) and it rocks. I have my STOCK speakers thru Xovers running up front and methinks they will have to go....