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    mendon mafia's Avatar
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    Port area for alpha v2's

    ok so i just got in the mail a brand new pair of alpah v2's

    these are the new ones with the heavyweight cone and surround and 8 layer flatwinds.







    Im building TWO SEPERATE BOXES for each sub

    each box was going to be ~2 cubes net tuned to ~37 hz. I was thinkng of doing 48" of port area per enclosure (96 total between both) but i dont want to damage the subs or sound like crap.

    let me know what you guys think



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
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  2. #2
    mlstrass's Avatar
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    Re: Port area for alpha v2's

    24^2 per cube is a LOT of port area. I'm guessing something around 12-14^2 per cube is more in order...




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    mendon mafia's Avatar
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    Re: Port area for alpha v2's

    Quote Originally Posted by mlstrass View Post
    24^2 per cube is a LOT of port area. I'm guessing something around 12-14^2 per cube is more in order...
    just got an email from steve miller. he said the subs wont get damaged but in his opinion they wont sound as good as if i did a smaller port area. I think im making a switchable port. or at least make wood to line the inside of the port to make the opening narrower.

    I know this will lower tuning but that should only increase sq too.



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
    System: Poineer 590ib headunit (soon upgrading to 790bt)
    2 12" RD Alpha V.3's (soon upgrading to konaki 9512 hybrids) powered by 2 Atomic 3000.1d's
    Polk mm6 front components powered by a Soundmagus CP-91 @ 4ohm bridged. JBL/Infinity Hybrid rear components. hu power
    200 amp alt and 2 stinger spv 70's (more pending voltage drop)
    Current output: 144.9 db using new 09 alpha v3's - on music with 1 3k - song: haters everywhere-two five, Chrysler 300M.

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    Re: Port area for alpha v2's

    an he is correct lol i build all my boxes small for rd subs man they love small boxes an you don't need that much port area to get them loud. i have the alpha v2 an 2.5 cubes an 2 4in aero's about 12in long tuned at 44-46hz could go lower if i wanted too but mine is tuned for more sql
    good luck with it though man i think you will love it .



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    mlstrass's Avatar
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    Re: Port area for alpha v2's

    so what did he recommend?




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    mendon mafia's Avatar
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    Re: Port area for alpha v2's

    Quote Originally Posted by basshedz06 View Post
    an he is correct lol i build all my boxes small for rd subs man they love small boxes an you don't need that much port area to get them loud. i have the alpha v2 an 2.5 cubes an 2 4in aero's about 12in long tuned at 44-46hz could go lower if i wanted too but mine is tuned for more sql
    good luck with it though man i think you will love it .
    My box is only 2 cubes net and tunes to about 37 hz maybe a little lower

    he reccomended 25-35 sqare inches per 12. he said 48 would be fine though and would not damage the driver, so i did it. I said that it would lack sq. i have one of thec boxes hooked up now and it sounds pretty good but it on pretty low volume to break in the subs.



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
    System: Poineer 590ib headunit (soon upgrading to 790bt)
    2 12" RD Alpha V.3's (soon upgrading to konaki 9512 hybrids) powered by 2 Atomic 3000.1d's
    Polk mm6 front components powered by a Soundmagus CP-91 @ 4ohm bridged. JBL/Infinity Hybrid rear components. hu power
    200 amp alt and 2 stinger spv 70's (more pending voltage drop)
    Current output: 144.9 db using new 09 alpha v3's - on music with 1 3k - song: haters everywhere-two five, Chrysler 300M.

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    mendon mafia's Avatar
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    Re: Port area for alpha v2's

    sounds great! got both boxes installed subs are still breaking in but it gets pretty loud still.



    refs: ebaker, its_bacon12, jando86, thedukey42 , WrenchGuy, jaredspl, teenapp, MisterGrubbs, BushJ311, fozzy2134
    System: Poineer 590ib headunit (soon upgrading to 790bt)
    2 12" RD Alpha V.3's (soon upgrading to konaki 9512 hybrids) powered by 2 Atomic 3000.1d's
    Polk mm6 front components powered by a Soundmagus CP-91 @ 4ohm bridged. JBL/Infinity Hybrid rear components. hu power
    200 amp alt and 2 stinger spv 70's (more pending voltage drop)
    Current output: 144.9 db using new 09 alpha v3's - on music with 1 3k - song: haters everywhere-two five, Chrysler 300M.

  8. #8
    t1990le's Avatar
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    Re: Port area for alpha v2's

    i was gonna get the same sub but i ended up gettin the sonace v2 with the 8layer flat wind in a 4.05 cu ft box with 42sq in of port tuned at 31ish hz. Its gets really loud despite only having 1000 watts goin to them. Mine are still breakin in too.




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