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  1. #16
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    Re: IB woofers water enclosure?

    Stupid question alert!!!!!!!

    Has anyone ever tried pressurizing or creating a slight vacuum in a box to see if output changes or this plus diff gas?



    Coming soon




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    Re: IB woofers water enclosure?

    I would think that a lighter gas, or less dense gas would have a cushioning effect. It would be similar to polyfill in a box, "tricking" the sub into acting like its in a larger box. A vacuum might have the same effect.
    Water would displace the air and reduce the box volume, no? I agree that the sonic transfer abilities of water might make for an interesting effect.... Maybe a worble sound or vibrato?
    It would be easy enough to coat the inside of a box with undercoating, bedliner, or fiberglass resin to waterproof it. Mount the sub inverted and your test could be performed in a few hours.



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    Re: IB woofers water enclosure?

    This has actually been done. The sub doesn't care what gas is behind it, all the sealed part does is act as an cushion for the woofer. A lighter less dense gas makes the sub behave as if it was in a larger airspace, at least vs the same volume of normal air. Fluids would have the opposite effect, so that would be useless. Also realize your cone isn't airproof and you'd have to refill it.

    SPL competitors could, or maybe even have tried to cheat using gases. If you fill the cabin of your car with a gas that is more dense than normal air, you'll increase the cabin pressure leading to a higher SPL measurement. For a "sealed on the dash" type of run this could be an effective cheat. I know I've heard of people running their AC's to make the car colder, which also makes more dense air, but you could really take it to another level with a different gas lol.

    There are a few AES papers with patents on this. They also use gases that are not only lighter than air, but gases that cool down when compressed, which is the opposite of most. This means that when the sub pushes inward, instead of having increasing pressure, the pressure actually remains fairly constant since the dropping temperature DECREASES the pressure and the sub moving inward increased it. That makes the box seem much larger than it is and there no change in compliance over stroke, sorta like an IB box, but you can make the overall Q anything you want, instead of just the woofers Q.. Kinda cool.



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    Re: IB woofers water enclosure?

    Someone needs to do this to get it outta my mind



    Coming soon

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    Re: IB woofers water enclosure?

    Quote Originally Posted by Oraclem19 View Post
    just now realized this was my thread.

    Actual reasoning behind this was to ask if the front of a woofer is waterproof give it is not a paper/pulp cone. Marine applications and such, given that the back of the woofer would not be exposed to any water.
    NOW THAT WE'VE SOLVED IF I CAN HINDENBURG A WOOFER
    Anyone with any ideas on this? Is it possible to spray a woofer with cleaner without damaging anything? Would some water exposure destroy a woofer?




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