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    slvrado28z's Avatar
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    subs/port facing

    anybody had experience with subs/port facing in a grand marquis, town car, crown victoria(all the trunks r the same)...about to build a box for some ab xfl 15s?



    2008 Silverado crew cab
    dash - Pioneer avh-p3200
    Front & rear - Alpine spr-17s 6.5
    Amps - rf t2500bdcp, rf p600.4
    Subs - 2 15" Incriminator Audio Death Row
    box- 13 cu ft net tuned to 35hz




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    Re: subs/port facing

    I know a general rule is sub back/port back, but it could be different. Personally, I wish I would've done something else - my enclosure was very limited on depth due to how tall it had to be to fit the subwoofer firing back. Almost wish I would've fired it upward.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    Re: subs/port facing

    ya but this trunk is different



    2008 Silverado crew cab
    dash - Pioneer avh-p3200
    Front & rear - Alpine spr-17s 6.5
    Amps - rf t2500bdcp, rf p600.4
    Subs - 2 15" Incriminator Audio Death Row
    box- 13 cu ft net tuned to 35hz

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    slvrado28z's Avatar
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    Re: subs/port facing

    Quote Originally Posted by Full Tilt View Post
    I know a general rule is sub back/port back, but it could be different. Personally, I wish I would've done something else - my enclosure was very limited on depth due to how tall it had to be to fit the subwoofer firing back. Almost wish I would've fired it upward.
    in my car i have subs up port back, but this trunk is different..



    2008 Silverado crew cab
    dash - Pioneer avh-p3200
    Front & rear - Alpine spr-17s 6.5
    Amps - rf t2500bdcp, rf p600.4
    Subs - 2 15" Incriminator Audio Death Row
    box- 13 cu ft net tuned to 35hz

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    Re: subs/port facing

    Quote Originally Posted by pimpala22 View Post
    ya but this trunk is different
    Wow-za. Good luck with that one.





    Quote Originally Posted by T.I.K. View Post
    Careful, by those definitions Spider Monkey is a contributing member, I don't think he even knows what a subwoofer is.
    Quote Originally Posted by Truman View Post
    Thanks quackhead. Your the only person who agrees with me. Jesus Christ I have like 40 post and I've been called a ******* like 37 times

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    slvrado28z's Avatar
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    Re: subs/port facing

    Quote Originally Posted by Full Tilt View Post
    Wow-za. Good luck with that one.
    yeaH need someone with experience with these cars lol



    2008 Silverado crew cab
    dash - Pioneer avh-p3200
    Front & rear - Alpine spr-17s 6.5
    Amps - rf t2500bdcp, rf p600.4
    Subs - 2 15" Incriminator Audio Death Row
    box- 13 cu ft net tuned to 35hz

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    Re: subs/port facing

    Those trunks are terrible. Best is 4th order ported through rear deck.




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    Re: subs/port facing

    Quote Originally Posted by hispls View Post
    Those trunks are terrible. Best is 4th order ported through rear deck.
    well besides that, just want a basic slot port. so sub/port back or both up or sub up/port back



    2008 Silverado crew cab
    dash - Pioneer avh-p3200
    Front & rear - Alpine spr-17s 6.5
    Amps - rf t2500bdcp, rf p600.4
    Subs - 2 15" Incriminator Audio Death Row
    box- 13 cu ft net tuned to 35hz

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    Re: subs/port facing

    If it were me, I'd think about building a box that fits right in that lower region of the space and firing subs and ports straight up. If there is space under there, you could also glass it in to take advantage of more of the space by removing the factory panels. Depending on how much air your subs need, that may not be necessary. The trunk is different shape but you have lots of space to work with which is cool.




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    hispls's Avatar
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    Re: subs/port facing

    Quote Originally Posted by pimpala22 View Post


    well besides that, just want a basic slot port. so sub/port back or both up or sub up/port back
    I suspect you couldn't do a port back without seriously crowding the port. I'd try subs back and port to the side first.




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    Re: subs/port facing

    I have 2 15"s subs up port up in 97 Grand Marquis. Seems to work ok, always done subs back port back though in past.



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    Re: subs/port facing

    I usually find a cheap prefab box and sub on CL and move it around for a few days to see what is best before I waist wood on a bad sub/port orientation.




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    Re: subs/port facing

    Remove the upper cushion of the rear seat. Cut out the metal behind and replace it with the face of your box. Firing subs and port forward towards windshield sealed off from trunk.



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