im not the smartest guy when it comes to car audio, but i do know some stuff.....i always hear of peeps at my school that want to put 2 12's and 1 15, or throw 3 tens of diff. brands all on the same setup....if the subs in question are in your pic (2 same 1 diff) i don't know if i would wire them all together, some might drown out or overpower others, and they prolly won't sound very good.......of course thats just my opinion and i only have like 200+ posts....lol