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Reload Thread: Concerns with a dual port box (differant tunes)

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    Concerns with a dual port box (differant tunes)

    Iamamp3pimp and i are gonna collaborate and build a box for this hybrid beast for fun.... thing is we want to do 2 ports, one tuned for balls to the wall SPL, and one tuned to 25Hz for the murderus lows this thing does...and simply put a port plug/plate over the one not being used....

    here's the problem.... how would the port volume of the COVERED PORT effect the internal volume of the enclosure for the other side that's being used....

    should we incorportate the port volume of the unused side(covered) into the internal volume for the side that being used(not covered)?

    also how would the shape of that port NOT being used (covered) effect the sound resonance inside the box??

    also if we did incorporate the unused(covered) side into the design for one side, that would ultimately effect the internal volume for when we use the other side....?

    help a brotha out lol



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    Re: Concerns with a dual port box (differant tunes)

    Depending on how you do it, if you just cover the opening to a port, it's volume in the box will only be the volume of the plastic, if you use a port plug (think ear plug) you will need to add the volume of air in the port it takes up.



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    Re: Concerns with a dual port box (differant tunes)

    Your port plug should be an internal piece. Not just a cover for the port opening. Design it to fill up any volume in the larger port, so there will be no air around the port plug while it is inside the larger port.

    Displacement will remain the same this way. Deduct the larger ports volume. And it will not effect air flow inside the box.

    unless this is for a HT setup 25hz will just reduce your overall output. Low end extension in vehicle will not be any greater tunning that low.



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    Re: Concerns with a dual port box (differant tunes)

    the driver has spacers between the basket and magnet giving it room for more throw....this thing did 140 on the TL at 29Hz (his avaitar)



    Team American Power Systems
    Pioneer Avic N5 Navi + CD-UB100 USB Adapter. RARE Circa 1996 PPI Ax606.2 in BLACK (1 of 400ish made) with 2 rare black graphic spacers.
    CDT DRT-25 1'' Silk Dome Tweeters / CDT ES-04 4'' Midranges / RE Audio XXX 6.5'' 2ohm Neo Mids In Glassed Kick Pods
    American Power Systems 240amp H.O. Alty / (2) Deka 8a31, 1/0 front to back.
    Unknown Prototype 3k @ 1ohm. TRF/PSI 8 layer 4in coil hybrid beast in 3 cubs @ 33Hz / Raammat 40sqft in the trunk.
    Quote Originally Posted by Haunz View Post
    You could put 12V to my balls and clamp my dick to get 3kW+.
    Quote Originally Posted by Slayerx View Post
    Glad this got bumped so I could fap to it again.

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