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Reload Thread: need a little help with box for 2 sq hdc3 15"

  1. #1
    big scott's Avatar
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    need a little help with box for 2 sq hdc3 15"

    hi guys,
    i was doing some calculations for my truck space and 2 15".

    i have a max of 34" wide .

    sq web site says for 2 - 15" that 9.00^3 is good.

    i was thinking..

    34"w-22"h-32"d port= 20-1/2 h x 7w x 24" long. ( net 9.29^3 ) tuning 35.31 hz.

    this is trying to get subs and port out facing the tailgate. but as you can see i dont have enough room for 2-15 and a 7" wide port.
    so would putting the port on top of the box be ok ?

    what do you guys think ?
    is there anything i need to change ?

    i plan on using the hole back of my 1st gen. s10 blazer.


    Vehicle : 88 s10 blazer ( in avatar )
    Location in the vehicle: back
    Space available (Length x Width x Height): these are max... 48"deep x 30"high x 36"wide
    Subwoofer make and model: sq hdc3 15" d2 2 of them.
    Subwoofer Size: 15"
    Number of Subwoofers: 2
    Type of Port (Kerfed, Slot, Aero, etc.): slot
    What type of music do you like?: heave bass rap, decaf,
    Is your goal SPL or Everyday Music?: everyday but i like pounding bass.
    Tuning Freq (Hz): ?? not sure. my box now is tuned to 34 hz .
    Volume : sq says for 2- 15" 9.00^3 but was thinking about 10.00^3
    Questions:
    Last edited by big scott; 06-21-2014 at 05:56 PM.



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.




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    Re: need a little help with box for 2 sq hdc3 15"

    i made changes.. ?



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.

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    mlstrass's Avatar
    mlstrass is offline Shaggy DOA



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    Re: need a little help with box for 2 sq hdc3 15"

    How much power will you have? I've had good luck with 8.5^3 net but usually run way over RMS for those subs....




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    Re: need a little help with box for 2 sq hdc3 15"

    Ill be using 2 ppi 1800x1 amps. 1 per sub. Running both at 1 ohm.



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.

  5. #5
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    Re: need a little help with box for 2 sq hdc3 15"

    anybody have any suggestions ? i would like to build my own box for 2 of these 15" for my truck. but not sure what would be great for spl ( not competing ) .

    just a daily slammer ...



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.

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    Re: need a little help with box for 2 sq hdc3 15"

    Quote Originally Posted by big scott View Post
    anybody have any suggestions ? i would like to build my own box for 2 of these 15" for my truck. but not sure what would be great for spl ( not competing ) .

    just a daily slammer ...
    Just my opinion I prefer my enclosures on the small side but still tuned low. Large enclosures especially oversized sound sloppy to me. 3600 watts on 2 15's will definitely slam though.




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    Re: need a little help with box for 2 sq hdc3 15"

    the only thing is, i was told my the owner of sq that these subs like the bigger boxes . well i was told that these 15" like 5.0^3 per sub. so that would be about 10^3 net.

    im trying to find out what box ( size,, port placement ,, ect) i need to make. i have never biuld a box so i want to try. but i have no idea how to figure it all out.

    cutting and putting it together is the easy part and i can do it.

    and ya im hoping i get this truck rock en even more lol.



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.

  8. #8
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    Re: need a little help with box for 2 sq hdc3 15"

    anybody??



    88 s10 blazer 2door ( my avatar ) 6/6 drop.
    pioneer 6300bt flipout, with backup camera. Galaxy tab 2 10.1 tablet.
    8-sq super tweeter's---4-sq pro 6.5 mid's ( 2- us acoustics Barbara Ann 4ch )
    4- 8"dayton's ( aq 200.2 )
    sq hdc3 15" d2, ported to 34hz ( ppi ba7000.1 )
    all knu 1/0 ofc ect, big 4,, db 200amp alt/100amp alt.
    yellow top under hood--- 2 amg battery's in back.
    plans....PPI DSP-88R--4 amg's--hdc3 15"--3- knu 4/0--2-240amp alt's.

  9. #9
    NoLoud4U's Avatar
    NoLoud4U is online now High Output SQ



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    Re: need a little help with box for 2 sq hdc3 15"

    They like large boxes. 5 cubes would be good.



    2014 Ford Fusion
    All stock everything.

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