Photecs, I never got it tested but it should be up in the 150-155 range, its pretty damn loud.

The X Factor the box, amps, suds and cap ran me a little over 3,000.
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2001 Just Blue SE, 3 10 inch Eclipse Aluminums, JL amps, TV, Dreamcast, 3" Calmini Lift,285 75 16 Mickey Thompson Baja MTX