I actually havent heard them, but I have one 10" Kenwood excelon dB+ in a factory sealed box and it bangs. Its rated about 200w rms, 800w max. It is more expensive then the one you questioned about, but is a better sub. They normallysell at about $200.00 for the sub alone, but if you have a Good Guys in your area they sell the sub in the sealed box for $149.99. You can also purchase a 3year warranty on it so if anything happens to it Good Guys will replace it with a brand new one.