subwoofers not as loud as they should be

[Tylerloves420 10+ year member]

Ok right now i have 2 12" power bass subs, with a 1500 watt phantom amp all hooked up to a pioneer head unit, but the thing is my subs arent that loud, i mean there not bad but if u get into someones car who has real 12's they sound like fireworks exploding in your chest while mine u can hear em and feel em but not at that level at all. I dont know if my subs are krap or its my amp or what, i did notice that on my head unit audio settings that i cant adjust my subwoofer, like if i change the ohm or turn off subs, or try to turn subs up it doesnt effect my subs at all. So i feel like some of the problem lies in the head unit but my stuff might be krap cuz i got it for 125 dollars so i wont be dissapointed if they are junk. So if someone could help me id appreciate it and if my stuff is junk can u suggest good ones that will sound real nice or tell me what i should look for on an amp amd sub thank your

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[Bettr n' Revrse 5,000+ posts]

Post some pics of the setup if you could... What sort of box do you have them in?