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Message: <blockquote data-quote="88k5blazer" data-source="post: 357422" data-attributes="member: 551661"><p>hey guys i need ur help. My friend has recently purchased 2 alpine type r swr1221d subwoofers and needs to make a box.  They each have 330watts rms and 1000 watts peak. Not sure if they are spl or sq...... but do know they are recommended for a sealed box with .7- 1 cubic feet each.  If he is to make just one sealed box, does that mean he needs to have 2 cubic feet.  Thanks in advance.</p></blockquote><p></p>

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