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i dont want to sound like a dick but your wrong, a critical mass does weight 18 pounds, a jl audio w7 45. however if you want to achieve spl (sound pressure level) and sq (sound quality) that the w7 provides, you would have to run 4000 watts to the critical mass. the w7 is heavy but much more efficient. what i would save in sub weight i would gain in amp weight. sorry....
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