Re: 6.5 or 8?
just about any 6.5 should get loud enough if installed properly and powered correctly. but for loud and efficient look into the memphis power reference line and above. if you want more mid bass then an 8 could be a viable solution though i believe the install to be more the problem than the equipment.
my factory speakers keep up with my hd12 on 2000w for the most part they fade out when i get to higher levels but if i amped them i see no reason they couldnt be loud enough. now i wont waste my time doing that because im going to be switching them out with some db drive comps in hopes that the db drive sound decent or ill jut switch them out for some focals.i just like the look of db drives top of the line components
2014 Chevrolet Cruze Diesel
Big sq install on the horizon if money stays good
2012 Nissan Versa Hatch
Deadened but stock, girls ride now