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Reload Thread: 146 db from a bmw 3 series trunk!!!

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    Re: 146 db from a bmw 3 series trunk!!!

    2000 Bmw 323i................







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    Re: 146 db from a bmw 3 series trunk!!!

    Not shabby, I also have a 3 series. Just about doing 50's at 37 hz here :p



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    Re: 146 db from a bmw 3 series trunk!!!

    Quote Originally Posted by pr-festiva View Post
    a smaller box will most of the time cause a higher impedance rise
    You have that backwards.



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    Re: 146 db from a bmw 3 series trunk!!!

    looks like i'll have to clamp the new box and see cause ive had multiple people respected in the industry tell me different



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    Re: 146 db from a bmw 3 series trunk!!!

    Quote Originally Posted by pr-festiva View Post
    looks like i'll have to clamp the new box and see cause ive had multiple people respected in the industry tell me different
    Weird, it turns out after searching that people say one thing or the other...doesn't seem to be a consistent rule(maybe there isn't a rule?). I had always heard from serious competitors that smaller box = less rise...never really tested it myself since i just dealt with daily boxes and didn't really care. But after doing a simple google search I found just as many positive results for "small box less impedance rise" as I did with "small box more impedance rise."

    Let us know what result you come up with.



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    Re: 146 db from a bmw 3 series trunk!!!

    Quote Originally Posted by pr-festiva View Post
    looks like i'll have to clamp the new box and see cause ive had multiple people respected in the industry tell me different
    Weird, it turns out after searching that people say one thing or the other...doesn't seem to be a consistent rule(maybe there isn't a rule?). I had always heard from serious competitors that smaller box = less rise...never really tested it myself since i just dealt with daily boxes and didn't really care. But after doing a simple google search I found just as many positive results for "small box less impedance rise" as I did with "small box more impedance rise."

    Let us know what result you come up with.



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    Re: 146 db from a bmw 3 series trunk!!!

    yep ive seen the same differing answers,,, time for some real world testing thats what i like about this hobby



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    Re: 146 db from a bmw 3 series trunk!!!

    Hopefully my two AA Havocs will be here by the end of the week so I can wire that VFL 120.1 down to 1/2.......See if I can get a 148.........lol




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    Re: 146 db from a bmw 3 series trunk!!!

    Got my Havocs in.......SPL went down just a little along with my PEAK........The Havocs done a 145.8 @ 49 hz but they sound so much better than the ABs....Thanks AA........I can't wait until my new DC 3.5k gets here!!!!!!!


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    Re: 146 db from a bmw 3 series trunk!!!

    Quote Originally Posted by kushy_dreams View Post
    What kind of car was it in?

    Does a smaller box yield less imp rise? Or are there too many other factors? Most setups I have seen are getting close to 3x the rise of the nominal impedance.
    Yes it yields less impedance rise there are many other factors but is one of the bigger ones.




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