I would like to buy 4 high excursion 12's. Been out of the game for awhile and there are so many choices today. Parameters that I need to stick with are 6" or less mounting depth and able to be used with 1 cuft sealed. All four need to be able to be wired to 1 ohm. Will be driven by an ARC audio XDI 2000.1 Thanks. P.S. I have a ARC 900.6 and an ARC KS1000.1 for trade or cash. Budget is under $600