Metered my tumult earlier this week...

Discussion in 'Home Theater Projects' started by Mattak, Sep 9, 2005.

  1. Mattak

    Mattak Stunt Coordinator

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    Pics of my HT tumult for anyone interested

    Friend loaned me his termlab spl meter, so I played around with it a little. With the sensor 2.5' away from the sub on top of my computer I put up 130.5db @ 35hz off of a 250w PE plate amp. Switched to my behringer EP2500 and put up 134.9db @ 35hz. It could go a little louder, more headroom on the amp, but I don't really feel like damaging the sub At listening position, with the sensor on my couch 10' away, it was doing 122db @ 35hz without cranking it as high as I did for the 134.9db reading...

    I had originally modeled the enclosure in winisd with a tuning of ~23hz, but I don't think my port length ended up long enough to get it down there. 22.7hz was the modeled -3db point, but it looks like it's more like 32hz.

    Oh well, I'm happy. I didn't really get a chance to run through a lot of numbers since other people were getting annoyed [​IMG]

    133.7db @ 36hz
    134.9db @ 35hz
    133.8db @ 34hz
    131.9db @ 32hz
    130.6db @ 31hz
    I think it was down at about 116db @ 2.5', so it was rolling off quick at that point...
     
  2. MikeGee

    MikeGee Second Unit

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    Thats awesome...
    That box design is pretty crazy. I love it. Must sound fantastic!
     
  3. chuckg

    chuckg Supporting Actor

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    Dude that's uh, lessee, that's ummmm Tumultuous!
     
  4. Bryan Michael

    Bryan Michael Supporting Actor

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    sweet i would be afraid to mesure my sub. i was considering 3 tumult but when considering how much power i would need to power them i decided on the avalanch. i went with 4 18in. but your sub looks sweet
     
  5. Mattak

    Mattak Stunt Coordinator

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    haha, afraid why? If you noticed, though, the difference between 250w and over 2000w really isn't that great. I use the 250w pretty much exclusively because I don't like the fan noise of the ep2500. You don't need a ton of power to get loud with either a tumult or a brahma (which I have in my car, and at one point was only feeding 500w).
     
  6. Bryan Michael

    Bryan Michael Supporting Actor

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    i dont want to break things. i did knock a glass out of a cabanet on a wall behing the wall my sub is bult into. my -3db point is 12 hz and can hit around 120db @12hz
     
  7. Mattak

    Mattak Stunt Coordinator

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    [​IMG]
     

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