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<blockquote data-quote="mjlorenzo" data-source="post: 6473054" data-attributes="member: 606397">I&#039;m thinking about replacing the sealed box I currently have with a larger one. I think the box I have is roughly .75cu ft and the sub is rated for 1.25cu ft. The result is pretty bad, the bass is muddy and it won&#039;t hit lows nearly as hard as higher frequencies.1. When considering the volume of the box, should I estimate the volume of the driver and subtract it from the volume of the box empty? aka, hypothetically if the driver&#039;s volume was .25cu ft and I wanted 1.25cu ft internal volume would I be looking for a 1.5cu ft box?2. How effective would polyfilling the current box be? If possible I&#039;d obviously like to use the smaller box cuz it frees up trunk space and I don&#039;t have to get another box shipped to me but if the results aren&#039;t going to be as good as just getting a larger box I&#039;d rather do that. If polyfilling would be effective, any recommendations on material, brand, amount, etc..?</blockquote>

[QUOTE="mjlorenzo, post: 6473054, member: 606397"] I'm thinking about replacing the sealed box I currently have with a larger one. I think the box I have is roughly .75cu ft and the sub is rated for 1.25cu ft. The result is pretty bad, the bass is muddy and it won't hit lows nearly as hard as higher frequencies. 1. When considering the volume of the box, should I estimate the volume of the driver and subtract it from the volume of the box empty? aka, hypothetically if the driver's volume was .25cu ft and I wanted 1.25cu ft internal volume would I be looking for a 1.5cu ft box? 2. How effective would polyfilling the current box be? If possible I'd obviously like to use the smaller box cuz it frees up trunk space and I don't have to get another box shipped to me but if the results aren't going to be as good as just getting a larger box I'd rather do that. If polyfilling would be effective, any recommendations on material, brand, amount, etc..? [/QUOTE]

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