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Reload Thread: Testing "SA-12" Prototype

  1. #46
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by sundownz View Post
    $200 is the MSRP.

    "Street price" pending.
    wordddddd...
    im def. coppin a pair of them then, lol
    i know the "street price" is always well below MSRP



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  2. #47
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    Re: Testing "SA-12" Prototype

    Factory finished my new prototype - I should have it soon... thing is a MONSTER:





    It is as big as it looks

    MSRP will probably creep a little over 200 for my changes, but not much.




  3. #48
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    Re: Testing "SA-12" Prototype






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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by sundownz View Post
    Daily sub - sounds good, handles alot of power, hard to break, and pretty loud too.
    idk i think this and the sd 2.5 will be very close. we need both um to be compared side by side



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  5. #50
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by icweiner View Post
    idk i think this and the sd 2.5 will be very close. we need both um to be compared side by side
    and the IA LI.





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  6. #51
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  7. #52
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    Re: Testing "SA-12" Prototype

    Looks interesting.

    Is the plastic ring for increased excursion clearance?




  8. #53
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by Q&A View Post
    Looks interesting.

    Is the plastic ring for increased excursion clearance?
    So the pole cant hit the dust cap under extreme excursion levels It would take 3-4x rated power to make that happen - but you never know *laughs* Tried to cover all the bases here.

    Also does give the spider a wee bit more rearward clearance for the inner rolls on back stroke.




  9. #54
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    Re: Testing "SA-12" Prototype

    does using plastic as the ring material insulate the basket from heat transfer from the motor structure? if so would the thermal limit be raised if the ring was metal and the basket helped disapate some of the heat?

    Ignoracnce here, just thinking out loud and wanting to learn



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  10. #55
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    Re: Testing "SA-12" Prototype

    It would benefit passive cooling but the ring would have to be a non magnetic metal which would be expensive - and this is a budget driver. This sub doesn't really need the added passive cooling of the frame to *easily* handle rated power and more, though.




  11. #56
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    Re: Testing "SA-12" Prototype

    understood an schooled



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  12. #57
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    Re: Testing "SA-12" Prototype

    It is a good question - I've done prototypes with aluminum rings before. Its awesome and does aid passive cooling but cost to benefit is not the best -- on an expensive driver where cost is not an object it is something I would consider strongly, though.

    The PG TI Elite 12D has an aluminum ring on the top plate, FYI




  13. #58
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by sundownz View Post
    It is a good question - I've done prototypes with aluminum rings before. Its awesome and does aid passive cooling but cost to benefit is not the best -- on an expensive driver where cost is not an object it is something I would consider strongly, though.

    The PG TI Elite 12D has an aluminum ring on the top plate, FYI
    In your opinion, is this type of cooling (basket) a real world benifit? would there be appreciable power handeling or longevity?



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  14. #59
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by kmanian View Post
    In your opinion, is this type of cooling (basket) a real world benifit? would there be appreciable power handeling or longevity?
    Over the long term it is a benefit - in my testing if you play a sub for 1+ hour at high power it will get quite warm up to the rim of the basket. The cast aluminum frame is a pretty good heat-sink. I've had frames too hot to touch after 2+ hour power testing.

    On the SA-12 the frame will eventually soak up heat through the basket screws and just by proximity to the hot coil - but the heat transfer is not as efficient due to the plastic ring. But the ring was necessary to help prevent potential physical damage to the driver.




  15. #60
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    Re: Testing "SA-12" Prototype

    Quote Originally Posted by sundownz View Post
    Over the long term it is a benefit - in my testing if you play a sub for 1+ hour at high power it will get quite warm up to the rim of the basket. The cast aluminum frame is a pretty good heat-sink. I've had frames too hot to touch after 2+ hour power testing.

    On the SA-12 the frame will eventually soak up heat through the basket screws and just by proximity to the hot coil - but the heat transfer is not as efficient due to the plastic ring. But the ring was necessary to help prevent potential physical damage to the driver.
    I definately understand the reason for the plastic, a driver like that for the $200 range is exactly what is needed in the market place, raising that price point would be unfortunate, so the potential benifits to cost wouldn't be worth it at the risk of the increased MSRP. You have to stop somewhere. I am very excited about this sub linem I think it will be well recieved.

    Thanks for the tutorial



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