[A1971Blazer]

In my Blazer, I have the Pioneer GM-D9605.....currently using JBL 3-way 6x9 in the side panels and 5¼ round in the doors with a low profile 10" sub under the rear seat..
I wired the speakers in parallel and bridged them to get max power and cut to 2 ohm resistance (which is OK for that amp) wired the sub as normal....it sounds good and clean with adjustable sub....I'm happy with it.