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Reload Thread: Sundown X, technical question about output, cone area/excursion

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    Re: Sundown X, technical question about output, cone area/excursion

    It's commonly said as 1/2 or 1/3. I've seen both of them thrown out there but not much else. I'm assuming the did tests to come to that approx value. All suspensions have some nonlinear component they add to output but it's generally not audible if it's a good surround. At low excursion levels it is exta cone area though. Main takeaway herr is correct.. a bigger surround doesn't generally do much either way for cone area but can help xmax.



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    Re: Sundown X, technical question about output, cone area/excursion

    ^ right as stated its pretty common knowledge the surrond still ads sd, why people argue it i have no clue.




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    Re: Sundown X, technical question about output, cone area/excursion

    I just wouldn't consider the surround as SD. simply because your not getting a linear stroke and they are usually too soft. sure they may displace some air its going to be so minute I wouldn't be concerned. the increased xmax per cone area will make up for it. in the v4 case Jacob said its about 10% less SD so your looking at 65in^2 instead of 72.
    1mm more xmax will make up for that!

    its just not solid surface area nor is it linear.. Id simply measure the cone itself. now yes it does increase MMS ETC... but that's a different story.. if it was up to me Id use a rubber surround or a softer more linear foam surround.. the rubber surrounds are great s long as they don't completely collapse..
    then again i use different methods of testing anyways so..



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    Re: Sundown X, technical question about output, cone area/excursion

    What is the actual xmax of the X?




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    Re: Sundown X, technical question about output, cone area/excursion

    rubber not as loud as foam :p




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    Re: Sundown X, technical question about output, cone area/excursion

    I didn't know certain materials are louder than others..
    It's not the surround that increases loudness. It could be controlling the stroke or simply providing the needed dampening needed for the application..



    knowledge is powerful but imagination is exponentially powerful..

    experience is key!! otherwise life is boring, uneventful and pointless..

    sub amps RD audio 1750s(SD3500 when i sell the RDs)---better audio prototypes
    mids CDT ES-6--tweeters CDT ES-02
    comp amp SD sax100.4D(for sale looking for a zapco 1000.4)
    deck..execlon x991

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