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    sbelew's Avatar
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    '98 Cavalier Build

    Enclosure started out to be a slot port, but then a change of plans, (and subs) I went with a round ported box. My first attempt at building a ported enclosure, with assistance from Kushy_Dreams, Thank You. It is a little rough but I will pull it back out to sand and cover it. I wanted to listen to it first before I spent anymore money on carpeting.

    Specs are;
    2 Boston 10" G1's (Thank you Cerwin Vega Fan)
    2.3 Cu Ft Net
    32Hz
    25 sq in of port
    Massive Audio NX5 Wired to 2 ohms.













    Vehicle: '99 Ford F-150 Extended Cab / '98 Chevy Cavalier LS
    Head Unit: Kenwood KDC-X995 / Kenwood KIV-BT900 w/ HD Radio
    Sub: FI Audio x12 4ohm w/BP 1cu ft sealed / 2 GTO804's 1.4 cu ft @28Hz
    Sub Amp: Hifonics BRZ1700.1d /
    Front Door Speakers: Massive Audio CK6 / Massive Audio CK6x
    Rear Door Speakers: Boston Acoustics SL80 / Massive Audio VX69
    Amp: MBQuart DSC4125 / Massive Audio NX5
    Wiring: All Knukonceptz
    Sound Deadening: eDead 45 / AT60 / Murder mat BL
    References: Retroaudioinc, davidtemple, cd6551, double07, Ssteele18

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  3. #2
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    Re: '98 Cavalier Build

    Only thing I would change is round off that hard edge on the inner lip of the pvc



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    Re: '98 Cavalier Build

    Seems like a lot of port for those drivers, I know BA recommends using 3" ports with these. Might be kind of peaky.



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    Re: '98 Cavalier Build

    Generally with round ports you can get away with less port area due to the increased efficiency over slots but in this case the ports aren't flared so its ok to go with a little bigger port area. But the hard edges do need to be eliminated.



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    Re: '98 Cavalier Build

    I couldn't get the numbers to work out right with using 3" ports. Might be because of my of cu ft is smaller than what Boston recommends. I went with 4" and stayed within the 9" to 13" per cu ft rule. Ended up at 10.9" per cu ft. And I'm not sure what peaky means. I will also round off the edge of the port when I take it out to finish it.



    Vehicle: '99 Ford F-150 Extended Cab / '98 Chevy Cavalier LS
    Head Unit: Kenwood KDC-X995 / Kenwood KIV-BT900 w/ HD Radio
    Sub: FI Audio x12 4ohm w/BP 1cu ft sealed / 2 GTO804's 1.4 cu ft @28Hz
    Sub Amp: Hifonics BRZ1700.1d /
    Front Door Speakers: Massive Audio CK6 / Massive Audio CK6x
    Rear Door Speakers: Boston Acoustics SL80 / Massive Audio VX69
    Amp: MBQuart DSC4125 / Massive Audio NX5
    Wiring: All Knukonceptz
    Sound Deadening: eDead 45 / AT60 / Murder mat BL
    References: Retroaudioinc, davidtemple, cd6551, double07, Ssteele18

  7. #6
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    Re: '98 Cavalier Build

    that rule doesnt apply to round ports and the rule isnt always something to stick to when using slot ports. its not a big deal. if you are able to (looks like not much side on the sides) make sure you have at a port's width of clearance to allow proper airflow from the exit of the port



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    Re: '98 Cavalier Build

    Im real close on that side clearance of the ports. I know I need 4" of clearance. I didnt have a tape measure handy at the moment, but i will check that. Its a real tight fit, with trying to retain some usable trunk space. I'm going to check that, I may end up having to rebuild the box. It started out being for a single 12 and got modified for 2 10's. I actually may try slanting the back of the box to fit up tight against the back seat, narrow it down some and give it a little more depth, which should solve that port clearance problem, free up a bit more trunk space, and perhaps drop the tuning down a bit more. Its a learning process, but meanwhile the learning is taking a bite out of my pocket, and the subs are starting to collect here. Need to put them up for sale soon.



    Vehicle: '99 Ford F-150 Extended Cab / '98 Chevy Cavalier LS
    Head Unit: Kenwood KDC-X995 / Kenwood KIV-BT900 w/ HD Radio
    Sub: FI Audio x12 4ohm w/BP 1cu ft sealed / 2 GTO804's 1.4 cu ft @28Hz
    Sub Amp: Hifonics BRZ1700.1d /
    Front Door Speakers: Massive Audio CK6 / Massive Audio CK6x
    Rear Door Speakers: Boston Acoustics SL80 / Massive Audio VX69
    Amp: MBQuart DSC4125 / Massive Audio NX5
    Wiring: All Knukonceptz
    Sound Deadening: eDead 45 / AT60 / Murder mat BL
    References: Retroaudioinc, davidtemple, cd6551, double07, Ssteele18

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    Re: '98 Cavalier Build

    Here is the latest addition to my system. I decided to go back and try the JBL GTO804's again, ported this time. It is 1.4cuft enclosure tuned to 28 Hz. Very clean sounding, plays low and is not overpowering. Sounds great actually. I just finished it up over the weeknd. Now I need to pull out the amp mount and recover it in the same material and clean up the wiring. Here are some pictures.






















    Vehicle: '99 Ford F-150 Extended Cab / '98 Chevy Cavalier LS
    Head Unit: Kenwood KDC-X995 / Kenwood KIV-BT900 w/ HD Radio
    Sub: FI Audio x12 4ohm w/BP 1cu ft sealed / 2 GTO804's 1.4 cu ft @28Hz
    Sub Amp: Hifonics BRZ1700.1d /
    Front Door Speakers: Massive Audio CK6 / Massive Audio CK6x
    Rear Door Speakers: Boston Acoustics SL80 / Massive Audio VX69
    Amp: MBQuart DSC4125 / Massive Audio NX5
    Wiring: All Knukonceptz
    Sound Deadening: eDead 45 / AT60 / Murder mat BL
    References: Retroaudioinc, davidtemple, cd6551, double07, Ssteele18

  10. #9
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    Re: '98 Cavalier Build

    Looks good but I would slide the box closer to you trunk lid, about 6-8"s off




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    Re: '98 Cavalier Build

    Why would you do that?



    Vehicle: '99 Ford F-150 Extended Cab / '98 Chevy Cavalier LS
    Head Unit: Kenwood KDC-X995 / Kenwood KIV-BT900 w/ HD Radio
    Sub: FI Audio x12 4ohm w/BP 1cu ft sealed / 2 GTO804's 1.4 cu ft @28Hz
    Sub Amp: Hifonics BRZ1700.1d /
    Front Door Speakers: Massive Audio CK6 / Massive Audio CK6x
    Rear Door Speakers: Boston Acoustics SL80 / Massive Audio VX69
    Amp: MBQuart DSC4125 / Massive Audio NX5
    Wiring: All Knukonceptz
    Sound Deadening: eDead 45 / AT60 / Murder mat BL
    References: Retroaudioinc, davidtemple, cd6551, double07, Ssteele18

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