box building

vawakemonster
vawakemonster Posts: 131
edited March 2007 in Car Audio & Electronics
I am building a box for a polk mm2104 sub to go behind the seat in my dakota. I was wondering if anyone here could design, help me design or point me in the direction fo a designing software.

I know I will need measurements and such for the space it needs to fit into I will be tkaing those tomorrow. I take a shop class at my school so my treacher said if I bring the mdf in after school she'll let me use the machines. I have acess too a large table saw, radial arm saw, band saw, jig saw, router and circular saw.

this is the last thing before I start trying to do some of the local meca events and I am getting excited.
Dodge Dakota
HU: Pioneer
Amp: Profile AP600 & Phoenix gold r2.5:2
Speakers: Boston SX 6.5 components
Subwoofer: polk mm2104
Post edited by vawakemonster on
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Comments

  • ben62670
    ben62670 Posts: 15,969
    edited March 2007
    vawakemonster wrote:
    I take a shop class at my school so my treacher said if I bring the mdf in after school she'll let me use the machines....and I am getting excited.
    Is she Hot? :D






    http://www.polkaudio.com/downloads/manuals/car/MM_2_Subs_Manual.pdf
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • VR3
    VR3 Posts: 28,641
    edited March 2007
    Brace the snot out of it.

    Caulk.

    Screws.

    Measure twice, cut once.

    Take your time.

    Its ALOT easier to take the piece off and trim it than sand it flat for 10 minutes...

    Wear a dust mask, MDF is nasty.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2007
    http://www.bcae1.com/spboxnew2.htm

    http://www.carstereo.com/help/Articles.cfm?id=26

    http://www.carstereo.com/help/Articles.cfm?id=26
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • vawakemonster
    vawakemonster Posts: 131
    edited March 2007
    can a table saw cut a 15 and a 105 degree miter?

    if I put my momo facing back with 1 inch between it and the back of my cab will it sound muffled?

    I figured roughly my box volume out to be 2025 inches square(no subtracting side wall thickness, but I plan on using 3/5 MDF) does this sound incorrect it is 15 tall, 4.5 deep at the top, 9 deep at the bottom, and 20 wide.

    is there a way to figure out if my momo 10 inch would fit if it is mounted 1.5-2 inches from the bottom on a the rear vertical board. i made to scale drawing on graph paper if you want me to scan and post.
    Dodge Dakota
    HU: Pioneer
    Amp: Profile AP600 & Phoenix gold r2.5:2
    Speakers: Boston SX 6.5 components
    Subwoofer: polk mm2104
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  • vawakemonster
    vawakemonster Posts: 131
    edited March 2007
    using mcleod's calculator I found my enclosure to be .759 ft3, polk suggests .66 should I make the enclosure smaller?
    Dodge Dakota
    HU: Pioneer
    Amp: Profile AP600 & Phoenix gold r2.5:2
    Speakers: Boston SX 6.5 components
    Subwoofer: polk mm2104
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2007
    what amp are you going to have on it?
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • vawakemonster
    vawakemonster Posts: 131
    edited March 2007
    profile 300 watt RMS x1
    Dodge Dakota
    HU: Pioneer
    Amp: Profile AP600 & Phoenix gold r2.5:2
    Speakers: Boston SX 6.5 components
    Subwoofer: polk mm2104
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2007
    Yes. Try to get as close as possible to the .66
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • exalted512
    exalted512 Posts: 10,735
    edited March 2007
    Actually, Id probably leave it the way you have it at your .75ft^3
    -Cody
    Music is like candy, you have to get rid of the rappers to enjoy it
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  • vawakemonster
    vawakemonster Posts: 131
    edited March 2007
    right now it is in a .65ft^3 enclosure and it seems to have a very nasty curve. polk suggests .66ft^3 but online for flat repsonse the calculators show it should have around .89-.92ft^3

    if I put the subwoofer firing toward the rear with 1-2 inches between it and the rear cab wall will it sound alright? or should I have it firing at my seat? what about firing down?
    Dodge Dakota
    HU: Pioneer
    Amp: Profile AP600 & Phoenix gold r2.5:2
    Speakers: Boston SX 6.5 components
    Subwoofer: polk mm2104
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  • MacLeod
    MacLeod Posts: 14,358
    edited March 2007
    The calculations for the flattest respone is .92.

    However, the Qtc for a .66 box is almost identical to the .92 belive it or not.

    I have mine in a .67 box and think it works well. Have a little faith in the Polk engineers. ;)
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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  • SpeedDemon
    SpeedDemon Posts: 7
    edited March 2007
    vawakemonster wrote:
    using mcleod's calculator I found my enclosure to be .759 ft3, polk suggests .66 should I make the enclosure smaller?


    I would just make a brace for inside the box and it should take up the .10 you need to take away. Bracing is good anyways. It could even make the box hit a little be hard.
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