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Message: [QUOTE="Blown262, post: 1254499, member: 22334"] The benefit of a sealed box and polyfill, is the polyfill effectively increases the internal volume of the box the subwoofer "sees" thus allowing the sub to produce more low-end punch, without increases the dimensions of the box. Sealed boxes also allow for a slight bump in power handling, as you don't have to worry about unloading of the cone when stressed, but you do run the risk of overheating the voicecoil if you start clipping with excessive power. [/QUOTE]

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