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    apxx 18 wall



    box is 16cf internal after displacements, port has 252sq in, tuned to 37hz, front is 3" thick, port is 1.5" thick rest of box is .75" think, any input?



    2 sa8 spl's in a 31hz tapped horn
    rd d9 run at 2ohm
    stinger spv70 up front
    kicker zx640.4
    alpine type s comp up front
    kicker ks 6x8's in rear
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    Re: apxx 18 wall

    Looks good. Plan on adding some external 2x4 bracing to a box that size. Looking forward to hearing this when it's done...

    This for 1 sub or 2?




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    Re: apxx 18 wall

    1 18
    ive been talking to a guy on termpro who has been using apxx's for a long time and this is what he said works best for the 18 in a wall, i hope its tuned low enough for my liking, should hit hella high though being so big efficiency should be way up.
    yeah i will do alot of bracing.



    2 sa8 spl's in a 31hz tapped horn
    rd d9 run at 2ohm
    stinger spv70 up front
    kicker zx640.4
    alpine type s comp up front
    kicker ks 6x8's in rear
    pioneer avh-3200bt
    buncha 1/0 awg kicker

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    Re: apxx 18 wall

    Quote Originally Posted by tymoto21 View Post
    1 18
    ive been talking to a guy on termpro who has been using apxx's for a long time and this is what he said works best for the 18 in a wall, i hope its tuned low enough for my liking, should hit hella high though being so big efficiency should be way up.
    yeah i will do alot of bracing.
    good luck going lower without ur door falling off



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    Re: apxx 18 wall

    Is that guy on termpro named Mr Stany. Somthin like that. Id look him up if its not on termpro. He knows his APX subs.


    Id say make that box a bit thicker. I have mine. My face plate is five layers thick. And everything else is 1.5 thick. Back is at least 2 inches thick. Do allthread for bracing.

    Note Same guy helped me with the design of my box.




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    Re: apxx 18 wall

    stany yes thats him. he told me 4" front baffle but i think i can get by with only 3, he said he used the 4" front for his burp frequency but i think i will make one port for db drag/bass race tuned to like 55 and then make this one for daily.
    and jake look whos talking about doors falling off, 4 12 off like 7krms tuned to 33hz... :hairtrick:



    2 sa8 spl's in a 31hz tapped horn
    rd d9 run at 2ohm
    stinger spv70 up front
    kicker zx640.4
    alpine type s comp up front
    kicker ks 6x8's in rear
    pioneer avh-3200bt
    buncha 1/0 awg kicker

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    Re: apxx 18 wall

    Well only thing is when you start going up in power that sub is going to wang as they say. I would make the box as thick as possible now. Rather then redoing it later trying to add thickness.




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    Re: apxx 18 wall

    nice and huge port! also i would add bracing to the walls that are going to be only 3/4". also resin on the inside and fiberglass the corners man!




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    Re: apxx 18 wall

    ^ well it looks like everyone is telling me to go 2 layers thick all the way around.... soooo i will have to do a little redesigning and get the walls a little thicker.



    2 sa8 spl's in a 31hz tapped horn
    rd d9 run at 2ohm
    stinger spv70 up front
    kicker zx640.4
    alpine type s comp up front
    kicker ks 6x8's in rear
    pioneer avh-3200bt
    buncha 1/0 awg kicker

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    Re: apxx 18 wall

    Quote Originally Posted by tymoto21 View Post
    ^ well it looks like everyone is telling me to go 2 layers thick all the way around.... soooo i will have to do a little redesigning and get the walls a little thicker.
    You will be very happy in the long run. Over time with a thin walled box. its going to come apart. When I get time I will send you a pic of my box for the apx I have.




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    Re: apxx 18 wall

    very cool. how much power do you have on it? yeah im going to redesign it soon so i can still get the 16cf out of it and have 1.5" all around.



    2 sa8 spl's in a 31hz tapped horn
    rd d9 run at 2ohm
    stinger spv70 up front
    kicker zx640.4
    alpine type s comp up front
    kicker ks 6x8's in rear
    pioneer avh-3200bt
    buncha 1/0 awg kicker

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