SPL Comp

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the jeep was a one note wonder,   but loud as hell.   that setup wasnt the loudest in the world, but the only thing that beat it were sponsored vans and trucks with campers full of equipment.   but it beat several vans too.  anyway point im making is pick a good quality sub and then it will be the tuning of the enclosure that makes the difference.  that was the 14th box in the jeep that year.  on the other hand the blazer plays every freq and does 155+ with about 6kw.  i was to lazy to rebuild that last year  plus if your guy wants to buy a us amp de 6000 double d amp, thats about 12kw at .5ohm for burps, ive got one here with about 15minutes play time on it ill let him have for $3500, they retail for over $6000.  you should be able to build something louder than my blazer with that.