Thread: Help with building a sub box

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  1. #1 Help with building a sub box 
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    Well I'm looking to replace my subs and while I'm doing this I'm going to build a new sub box and plan on making a pretty nice one this time around. What I'd like to do is build a box thats ported and then take some kind of flat board and put it across the whole front to take up all the edges around the box to the car. That way it looks clean and sealed. It will look kind of like this:



    Now I had a sealed box before but this I'm I'd like to go with a ported box instead. I don't quite understand how to tune the box to my liking though and am having a hard time with how long the port length should be and everything. I've done the calculations and such and they all seem to come out around the same but I still don't understand what I'm doing. My design plan was to use a slot style port in the middle of the 2 subs. I wanted the box to be about 2 feet cub for each sub. Can anyone give me a hand with how to handle this. I don't understand what frequency to tune to and such. I listen to all sorts of music.

    i've been using this site: Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators to do the calculations and gather most of my info from.
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  2. #2 Re: Help with building a sub box 
    That Loud Guy 1LoudGrandPrix's Avatar
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    what kind of subs?
    what kind of amp?
    and i would say 42-48hz
    98 Camaro SS 46k LS1, T56, All Stock. 00 GMC Sierra 2wd ECSB 106k Lm7, 3.73s tow needs lowered..
    01 Grand Prix GTP "201k" ~111k on motor, ~46k on trans, headers, 3.4 and a tune to come.
    01 Grand Prix GT 168k: Mods: Tune by TheOtherNick. Stereo: 320A alt,4 runs 0/1, XS D3400 front, 1 JYP 80ah Lithium rear, 2 Twisted Sounds 3500s, 2 Sundown Audio NightShade v.3 7 National Records..

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  3. #3 Re: Help with building a sub box 
     

  4. #4 Re: Help with building a sub box 
    ROLLS ARE FOR BAKERS... whiney's Avatar
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    If I was you i'd stay away from kicker subs, I've had nothing but bad luck with them. Go with like an fi q 15" or a mach 5 sub and call it a day.
    2000 2dr. black GTP|Headers|3.1"|xp'ed|ported s/c|HPT & aem wb|3.29's built trans|19° timing|0°KR
    Turbo/heads /big cam build starts soon!!!
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  5. #5 Re: Help with building a sub box 
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    Quote Originally Posted by whiney View Post
    If I was you i'd stay away from kicker subs, I've had nothing but bad luck with them. Go with like an fi q 15" or a mach 5 sub and call it a day.
    I have 2 kicker 10's right now. One went bad but had lasted like 2 or 3 years now. I like the subs honestly and haven't had an issue with them. Do you have links to the ones you mentioned?
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  6. #6 Re: Help with building a sub box 
    ROLLS ARE FOR BAKERS... whiney's Avatar
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    IXL-15.2.2 [IXL-15.2.2] - $199.00 : Mach 5 Audio
    https://ssl.perfora.net/www.ficaraud...iew.shopscript
    YouTube - dscf7342.avi
    2 brand new l7's after 3 weeks of use... it still works but you give it any power and it sounds like a mini jackhammer against concrete....
    2000 2dr. black GTP|Headers|3.1"|xp'ed|ported s/c|HPT & aem wb|3.29's built trans|19° timing|0°KR
    Turbo/heads /big cam build starts soon!!!
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  7. #7 Re: Help with building a sub box 
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    that box design is stupid.
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  8. #8 Re: Help with building a sub box 
    ROLLS ARE FOR BAKERS... whiney's Avatar
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    good observations, any idea what is wrong with that kicker sub that i posted the link to?
    2000 2dr. black GTP|Headers|3.1"|xp'ed|ported s/c|HPT & aem wb|3.29's built trans|19° timing|0°KR
    Turbo/heads /big cam build starts soon!!!
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  9. #9 Re: Help with building a sub box 
    That Loud Guy 1LoudGrandPrix's Avatar
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    Quote Originally Posted by whiney View Post
    good observations, any idea what is wrong with that kicker sub that i posted the link to?
    did you over power it or clip the hell out of the signal?
    98 Camaro SS 46k LS1, T56, All Stock. 00 GMC Sierra 2wd ECSB 106k Lm7, 3.73s tow needs lowered..
    01 Grand Prix GTP "201k" ~111k on motor, ~46k on trans, headers, 3.4 and a tune to come.
    01 Grand Prix GT 168k: Mods: Tune by TheOtherNick. Stereo: 320A alt,4 runs 0/1, XS D3400 front, 1 JYP 80ah Lithium rear, 2 Twisted Sounds 3500s, 2 Sundown Audio NightShade v.3 7 National Records..

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  10. #10 Re: Help with building a sub box 
    GT Level Member josemolina2008's Avatar
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    Quote Originally Posted by whiney View Post
    IXL-15.2.2 [IXL-15.2.2] - $199.00 : Mach 5 Audio
    https://ssl.perfora.net/www.ficaraud...iew.shopscript
    YouTube - dscf7342.avi
    2 brand new l7's after 3 weeks of use... it still works but you give it any power and it sounds like a mini jackhammer against concrete....
    I don't know much about audio are those subs any good?
    GP is gone...
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  11. #11 Re: Help with building a sub box 
    That Loud Guy 1LoudGrandPrix's Avatar
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    Fi seem to be good with music and SQ(with there SQ woofers) not so much for SPL
    98 Camaro SS 46k LS1, T56, All Stock. 00 GMC Sierra 2wd ECSB 106k Lm7, 3.73s tow needs lowered..
    01 Grand Prix GTP "201k" ~111k on motor, ~46k on trans, headers, 3.4 and a tune to come.
    01 Grand Prix GT 168k: Mods: Tune by TheOtherNick. Stereo: 320A alt,4 runs 0/1, XS D3400 front, 1 JYP 80ah Lithium rear, 2 Twisted Sounds 3500s, 2 Sundown Audio NightShade v.3 7 National Records..

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  12. #12 Re: Help with building a sub box 
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    Not a fan of the BTL's?

    Its obv the coil, just a question of did you give it too much power and it separated or did it hit something then separate.
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  13. #13 Re: Help with building a sub box 
    ROLLS ARE FOR BAKERS... whiney's Avatar
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    They were broken in on a bench to kicker's specs and everything, They never would have gotten more than 2000 watts between 2 of them for a short time. There is 2 of them that do the exact same thing, i'll get a vid of it playing today for ya.
    2000 2dr. black GTP|Headers|3.1"|xp'ed|ported s/c|HPT & aem wb|3.29's built trans|19° timing|0°KR
    Turbo/heads /big cam build starts soon!!!
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  14. #14 Re: Help with building a sub box 
    That Loud Guy 1LoudGrandPrix's Avatar
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    clipping then or dirty noise?
    call kicker they should give a new ones
    BTL's i like they arn't as loud as some others
    98 Camaro SS 46k LS1, T56, All Stock. 00 GMC Sierra 2wd ECSB 106k Lm7, 3.73s tow needs lowered..
    01 Grand Prix GTP "201k" ~111k on motor, ~46k on trans, headers, 3.4 and a tune to come.
    01 Grand Prix GT 168k: Mods: Tune by TheOtherNick. Stereo: 320A alt,4 runs 0/1, XS D3400 front, 1 JYP 80ah Lithium rear, 2 Twisted Sounds 3500s, 2 Sundown Audio NightShade v.3 7 National Records..

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  15. #15 Re: Help with building a sub box 
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    When looking at a BTL in a ported box, its wAYYYYYYYYYYYYYYYYYYY too peaky for my tastes so i cant imagine the ones that are louder.

    to reiterate: dont build your box like that, you'd basically be building a terrible bandpass enclosure.
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  17. #17 Re: Help with building a sub box 
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    I already have my kenwood amp and I love that thing. Its plenty good enough for me and puts out plenty of power. I liked my kicker subs but wanted to see if anything else was out there better but for my price range its not looking like that. I loved my kickers too. They worked great.
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  18. #18 Re: Help with building a sub box 
    That Loud Guy 1LoudGrandPrix's Avatar
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    wking2 welcome you seem to know some good brands there
    98 Camaro SS 46k LS1, T56, All Stock. 00 GMC Sierra 2wd ECSB 106k Lm7, 3.73s tow needs lowered..
    01 Grand Prix GTP "201k" ~111k on motor, ~46k on trans, headers, 3.4 and a tune to come.
    01 Grand Prix GT 168k: Mods: Tune by TheOtherNick. Stereo: 320A alt,4 runs 0/1, XS D3400 front, 1 JYP 80ah Lithium rear, 2 Twisted Sounds 3500s, 2 Sundown Audio NightShade v.3 7 National Records..

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  19. #19 Re: Help with building a sub box 
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    yep been doing caraudio 4 10 years. whats ur price range i cant point u in the right direction
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  20. #20 Re: Help with building a sub box 
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    I actually had another question as far as the ports on the box. I was thinking about the idea of having the subs face toward the back of the car and having the port right behind the opening in the center of the back seat. I planned on removing the door and just having it open all the time.
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