Sealed subwoofer internal volume question

Discussion in 'Home Theater Projects' started by Ben Ch, Nov 23, 2005.

  1. Ben Ch

    Ben Ch Agent

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    How low should a dual 15" sealed sub be expected to go?

    Unibox says of two 15" Sound Splinter RL-p D4's wired for a total load of 4 ohms, powered with a 1200 watt amplifier in a 350 liter box (approx 12.5 ft^3) should have an F3 of 41.7 hz (based on a peak at 92.9 hz, and that volume of box will have a tuning of 36.86 Hz.) Is this low enough???

    I'm not sure I like the looks of the output curve generated by a sealed enclosure compared to a vented one, there's certainly no extended "shelf" on a sealed enclosure (I'm tuned for approx 18 Hz as is with my single RL-p) but can anybody describe to me how the two different designs would compare - a single 15" ported RL-p at 600 watts max to a dual sealed 15" RL-p at 1200 watts max?
     
  2. Jason Dalton

    Jason Dalton Stunt Coordinator

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    A single ported (@600W) will have higher output than a dual sealed (@1200W) below ~22Hz, above that point the sealed box will have more output.

    The ported design will also be flatter, but you can EQ the sealed enclosure to be flat as well.
     
  3. DaveMcS

    DaveMcS Second Unit

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  4. Ben Ch

    Ben Ch Agent

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    Dave, by chance did you happen to reply to the wrong thread?

    It's not my birthday, but yes - my eyesight is starting to fail...
     

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