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    help me understand 4th order tuning

    I have a few questions regarding tuning of 4th order designs. How does 4th order tuning differ from traditional ported boxes? I see some designs that are tuned low and it sounds like they are going for low end monsters? Am I correct that a low tuned 4th orders wont play much over the low tuning? The 4th orders that I see that have high tuning like 60 and 70 seem to be the ones designed to be more musical? In a 4th with a high tuning does it play from the tuning down or will it start falling off like a ported box would do? So if I tuned a ported box to 60, it would peak there but then start falling off below the peak right and woulnt have any lows. How does that differ in a 4th order?







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    Re: help me understand 4th order tuning

    Somebody help me out. I have two designs for same woofers. Both designs are very close in size for the sealed and the ported sections. the difference is the tuning. One is high and the other design is way lower. Trying to figure out the effect on the tuning for bandpass. I told both that I wanted it to play from 70 down so I would assume the higher tuned one would be better at doing that.




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    Re: help me understand 4th order tuning

    it seems like there are no people willing to help anymore with out getting paid on here.. maybe caco or ssa can be of better help..



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    Re: help me understand 4th order tuning

    What are your enclosure volumes? That plays a big role as to how the tuning is going to affect tour response curve. We also need to know what subs you are using.



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    Re: help me understand 4th order tuning

    Quote Originally Posted by KyleBechtold View Post
    it seems like there are no people willing to help anymore with out getting paid on here.. maybe caco or ssa can be of better help..
    not true bro. just too lazy and we see these questions everyday




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    Re: help me understand 4th order tuning

    What subs/space/bandwith are you looking for? Post them up and Ill help you out with the specs you need.

    My 4th order is tuned at 30hz and it is a beast on low end. Peaks at 25hz.




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    Re: help me understand 4th order tuning

    Quote Originally Posted by galacticmonkey View Post
    What subs/space/bandwith are you looking for? Post them up and Ill help you out with the specs you need.

    My 4th order is tuned at 30hz and it is a beast on low end. Peaks at 25hz.
    damnn any pics of it and what subs?




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    Re: help me understand 4th order tuning

    CVRs. Check my build thread. I also put up a video in the videos section.




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    Re: help me understand 4th order tuning

    These were a pair of 10" credence clearance speakers. Credence build house told me they were close to the old solobarics and just had a different label placed on them. The design I trust is 0.936 sealed side. 2.042 or the ported side with a port tuned to 67 and 54.25 of port area. Like i said I had some other designs that were very close on size, but they placed the tune down in the 50hz range. I believe the size of the box is dead on, I just want to learn how the tune will affect how the box plays. I was looking for some thing that could play around 70 down, where my midbass will be cut.




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    Re: help me understand 4th order tuning

    Tuning really depends on box size and what goals you are trying to achieve.



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    Re: help me understand 4th order tuning

    if you want good daily then your best bet will be to tune to around 45hz, it will get low still but that is also basd on a 2 to 1 ported to sealed ratio..



    Quote Originally Posted by oldschoolboomer View Post
    well the 2 round twelves are pie r square and the l7's are already square so they would hit way harder especially when your amp puts out square waves which I assume is quite often


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    Re: help me understand 4th order tuning

    Tune at 50hz. It will play up to 70hz no problem.

    If youre just looking for a super wide passband, a larger sealed box might be the best bet for you.




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    Re: help me understand 4th order tuning

    Quote Originally Posted by galacticmonkey View Post
    Tune at 50hz. It will play up to 70hz no problem.

    If youre just looking for a super wide passband, a larger sealed box might be the best bet for you.
    Why would you want to play up to 70 hz?



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    Re: help me understand 4th order tuning

    Quote Originally Posted by Buck View Post
    Why would you want to play up to 70 hz?
    Quote Originally Posted by Jroo View Post
    These were a pair of 10" credence clearance speakers. Credence build house told me they were close to the old solobarics and just had a different label placed on them. The design I trust is 0.936 sealed side. 2.042 or the ported side with a port tuned to 67 and 54.25 of port area. Like i said I had some other designs that were very close on size, but they placed the tune down in the 50hz range. I believe the size of the box is dead on, I just want to learn how the tune will affect how the box plays. I was looking for some thing that could play around 70 down, where my midbass will be cut.
    Reading > joo



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    Re: help me understand 4th order tuning

    Chamber volumes along with tuning affect bandwidth. Not one is really more important than another.. to truly understand it you need to take a look for yourself.



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