what subwoofer for hcca225 for good spl?

[thebeast 10+ year member]

i need a good sub something that i could wire at .75-1ohm. the amp is suppose to be 400watts@1ohm. i need some sugesstions to get some good spl numbers and some sq. how would a RE SX work out? does anyone make good ported box for these subs to get the most out of them?

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[Nukedsodapop 5,000+ posts]

It can run at .5 ohms, and It puts up way better numbers than that, try 7-800w, and from what I hear SX's are efficient and would probably do well off of that in a big ported box but then again I havent ever heard one so I wouldnt know... Hope I helped even if It wasnt very much, happy bumpin