Re: volts and watts?
Your box is your weak link. 1.2 is very small for a 12 should be double with a lot of port area. When you add the second sub you are reducing power by half lose 3db but double cone area gain 3 db putting you back where you started. Have a custom box designed and build it or have it built then get a new amp that makes its power at 2ohm.
bought from MBROOKY, johnny law.Lulz, subzero, tc3k101
sold to mytrunkslamz , vitveet, cd6551, martiandancer31 (x2), pro-rabbit, whytellyou
Trade with cf2004