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Reload Thread: I haz passive radiators.

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    TaylorFade's Avatar
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    I haz passive radiators.

    Eff ports.

    Still dialing it in, but just so you guys know how super easy and awesome it is to figure up moving mass for tuning a PR, here's the "Quick and easy" version of the formula.



    Anyway... here's the sexiness. It's moving some shit. Currently running that Tantric HD 10 on a 4k @ 5








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    Re: I haz passive radiators.

    I've always wanted to use a pr. Is it possible to blow them? Like over excurt them and damage soft parts? How are they sounding?

    EDIT:Oh and your sub is upside down




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    Re: I haz passive radiators.

    whats the point of a PR?



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    Re: I haz passive radiators.

    Play output the sub can't exactly handle well.



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    Re: I haz passive radiators.

    Quote Originally Posted by R34P3R View Post
    I've always wanted to use a pr. Is it possible to blow them? Like over excurt them and damage soft parts? How are they sounding?

    EDIT:Oh and your sub is upside down
    I seriously doubt it if your system is designed correctly. That's one of the reasons behind having at least double the Sd or double the excursion for your passives.

    Quote Originally Posted by IAWJ4.7 View Post
    whats the point of a PR?
    No port noise, crap ton of "port area" without having to snake a huge port around in the box, smaller box because you don't have to account for port displacement.

    Basically... all the advantages of a vented alignment without any of the downsides.

    There are only two disadvantages of a PR... they rolloff faster below tuning... and the cost. That's it.



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    Re: I haz passive radiators.

    Which PR's are those? They look similar enough to my old Assassins...might want to get one or two. I know AE had some 15" and 18" PR's for pretty cheap, but IIRC they were not adjustable.



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    Re: I haz passive radiators.

    Quote Originally Posted by RAM_Designs View Post
    Which PR's are those? They look similar enough to my old Assassins...might want to get one or two. I know AE had some 15" and 18" PR's for pretty cheap, but IIRC they were not adjustable.
    These were custom built for me by Tantric like, yesterday. Just don't have the stickers yet. Murph said he wasn't going to take credit for them until I got them dialed in and wrecking shit. Lol.



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    Re: I haz passive radiators.

    So thats really just a woofer minus the motor and coil and you add/subtract mass in place of where the coil would be to "tune"?



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    Re: I haz passive radiators.

    Quote Originally Posted by kushy_dreams View Post
    So thats really just a woofer minus the motor and coil and you add/subtract mass in place of where the coil would be to "tune"?
    Yes, it works just like a port. Except in this case the relationship between the box volume, cone area of the PR, and moving mass of the PR will affect the tuning frequency that you end up with.



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    Re: I haz passive radiators.

    I'd love to run passives but ports are sooo much cheaper.



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    Re: I haz passive radiators.

    Quote Originally Posted by supermaxx123 View Post
    I'd love to run passives but ports are sooo much cheaper.
    I had some of the TC Sounds VMP's years ago when they were having a sale(Maybe 6 years ago?). I sold them right before TC decided to jack all their prices up...



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    Re: I haz passive radiators.

    Quote Originally Posted by supermaxx123 View Post
    I'd love to run passives but ports are sooo much cheaper.
    I hear ya. They're not cheap. But my very picky and specific set of needs/wants for that stupid little build was giving me fits trying to do a port.

    Plus, I've been wanting to do PR's for a while.



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    Re: I haz passive radiators.

    Quote Originally Posted by TaylorFade View Post
    I hear ya. They're not cheap. But my very picky and specific set of needs/wants for that stupid little build was giving me fits trying to do a port.

    Plus, I've been wanting to do PR's for a while.
    Keeping space costs money! One of these days I'll justify spending the money on passives... Nice build BTW.



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    Re: I haz passive radiators.

    Quote Originally Posted by supermaxx123 View Post
    Keeping space costs money! One of these days I'll justify spending the money on passives... Nice build BTW.
    Thanks, man. I haven't built a "sealed" box in forever. I was like... "Wait... thats it?"



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    Re: I haz passive radiators.

    I have some PR's here that I've been sitting on for years. Always meant to make a box for them. Very useful if you want to tune low in a small volume.




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