cancellation

Systems
Systems Posts: 14,873
edited December 2003 in Car Subwoofer Talk
I built myself a nice little ported box for my infinity kappa perfect 10.1d thinking it would be nice and peachy when it was done. I built it to the right volume and port diameter/length but i'm getting some nasty cancellation. I put the port on top of the box and its just about 3" (or more) from the sub and walls. I tried turning the box every which direction in my car with the port and speaker not facing down. No luck. Can I do anything like lengthen the port to help cancellation issues or am I stuck with the problem of having to build another box? It sounds like utter crap having only 35-40hz notes and the rest just completely gone.
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Comments

  • Systems
    Systems Posts: 14,873
    edited December 2003
    how long is your port and how big around is it?????
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  • Systems
    Systems Posts: 14,873
    edited December 2003
    10.4" long, 3" diameter as called by the ported box specs
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  • MacLeod
    MacLeod Posts: 14,358
    edited December 2003
    Thats why I shy away from ported boxes and especially bandpass boxes. If done right they rock, if off by a little theyre crap. You may just want to consider it carpentry practice and build yourself a nice sealed box.
    polkaudio sound quality competitor since 2005
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    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D
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