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Reload Thread: 4 12's. Budget build. Need some box help please.

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    pntbllwlly's Avatar
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    4 12's. Budget build. Need some box help please.

    Okay. First off, im doing a budget build, with 4 Hifonics hfi12s4's.

    Not the best woofers out there, i know, i just wanna see what i can do with them since i already have 2 from a while back.

    I was looking to do a box like this:
    http://www.caraudio.com/forum/showthread.php?t=345189

    I have a 1998 Dodge Intrepid (**** load of trunk), with the back seats down so i would have the port/opening/subs facing the cab, obviously.

    Questions:
    1) Should i do box like that? (Idek what type that is, blowthrough?)
    OR
    - 4 12's up firing, in a 7cu.ft box. With (im thinking) 2 6" Aero's@32hz (Maybe more?)

    2) If i do choose to do the "blowthrough" how do i go about designing it? (I am up for paying for designs)

    Thanks fellas.

    PS. Ive searched.
    Last edited by pntbllwlly; 08-25-2009 at 07:29 PM.




    DOWN LOW CAR AUDIO

    Source- JVC KD-S100 <3
    Speakers- Infinity reference 6.5's(front) and 6x9's (rear) 2 Onkyo tweeters, in each A pillar
    Subs- (4) Hifonics hfi12's
    Box- 12cu.ft 4th order Bandpass. ported with 6 4" aeros@46 hz (firing into the cab )
    Amps- PowerBass asa-1500.1(subs) and Vr3 400.4(speakers)
    Batt/wiring- Stinger spv44(trunk) with Knu 4g, and Monster 8g wiring.




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    Re: 4 12's. Budget build. Need some box help please.

    do a 4th order seats down into the cabin. with a good deisgn its pure win.




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    Re: 4 12's. Budget build. Need some box help please.

    if you've got 7 cubes gross... you don't have enough room to port those subs.



    Quote Originally Posted by CantGetEnufBASS View Post
    yeah his story about 300 db's sounded a little funny, but now that i know he's using type-r's thats totally beliveable

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    Re: 4 12's. Budget build. Need some box help please.

    I have a pair in 4.5, was gonna buy 2 more, i would make sure you have more like 8-10 cubes after displacements



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    Re: 4 12's. Budget build. Need some box help please.

    Quote Originally Posted by adas View Post
    do a 4th order seats down into the cabin. with a good deisgn its pure win.
    That crossed my mind also. How many cu.ft would i need for a 4th?

    Quote Originally Posted by spencer321 View Post
    if you've got 7 cubes gross... you don't have enough room to port those subs.
    Good point. Even though the displacement of these subs is pretty small.

    Thats why with 7cu i wanted to do aeros.

    But i can get 8-10cu.ft easily. I just want some trunk space...




    DOWN LOW CAR AUDIO

    Source- JVC KD-S100 <3
    Speakers- Infinity reference 6.5's(front) and 6x9's (rear) 2 Onkyo tweeters, in each A pillar
    Subs- (4) Hifonics hfi12's
    Box- 12cu.ft 4th order Bandpass. ported with 6 4" aeros@46 hz (firing into the cab )
    Amps- PowerBass asa-1500.1(subs) and Vr3 400.4(speakers)
    Batt/wiring- Stinger spv44(trunk) with Knu 4g, and Monster 8g wiring.

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    Re: 4 12's. Budget build. Need some box help please.

    well i have a pair of 10's in a 3 cube box after displacement an they do fine, but if you wanna hit those lows with authority you will need some space an i think 7 is good man i mean guys come on these are 12's not 15's, i can put 3 15's in a 7 cube box an play daily all year. i personally think that 7 cubes will be enough for what you want to do but if you want to go bigger by all means do it but don't forget you got batts an amps to worry about too.



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    pntbllwlly's Avatar
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    Re: 4 12's. Budget build. Need some box help please.

    Quote Originally Posted by iamamp3pimp View Post
    for a 4th...more than 7, but how much power do you have?
    cadence txa3002.

    600x1@4

    Giving each sub ~150rms.

    I will probably run an AP1500d a week-2 weeks after running that^^ amp with the 12's.




    DOWN LOW CAR AUDIO

    Source- JVC KD-S100 <3
    Speakers- Infinity reference 6.5's(front) and 6x9's (rear) 2 Onkyo tweeters, in each A pillar
    Subs- (4) Hifonics hfi12's
    Box- 12cu.ft 4th order Bandpass. ported with 6 4" aeros@46 hz (firing into the cab )
    Amps- PowerBass asa-1500.1(subs) and Vr3 400.4(speakers)
    Batt/wiring- Stinger spv44(trunk) with Knu 4g, and Monster 8g wiring.

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