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Reload Thread: Fi SSD 15" Break in

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    Fi SSD 15" Break in

    Hey .,

    about to order one of these subs, how to break it in ? i have never owned a subwoofer before so i have no idea how.. ive googled and they said run for 16 hours plugged in into your house through your amp ( not sure how that will work ) and play like 20-30hz break in music ( which i can't find on youtube or any download sites.. )

    help! haha

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    Re: Fi SSD 15" Break in

    Playing a 20hz tone free air through the sub running off a small amount of power just to get the sub moving a bit, for around 20 minutes should loosen it up a bit. You won't really need a break in if you aren't running a ton of power to the sub, or if you tend to dip below your box tuning. For the first couple days or so just don't go full tilt right away, do like 3/4 volume.




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    Re: Fi SSD 15" Break in

    Quote Originally Posted by Kangaroux View Post
    Playing a 20hz tone free air through the sub running off a small amount of power just to get the sub moving a bit, for around 20 minutes should loosen it up a bit. You won't really need a break in if you aren't running a ton of power to the sub, or if you tend to dip below your box tuning. For the first couple days or so just don't go full tilt right away, do like 3/4 volume.
    wheres a good place to download some 20hz music? and best way to run it for 20 minutes just sitting in the car with engine on?




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    Re: Fi SSD 15" Break in

    burn the track, when you've found a link to the test tone, onto a CD and put the track on repeat.



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    Re: Fi SSD 15" Break in





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    Re: Fi SSD 15" Break in

    don't worry about it FI subs spiders are soft enough to not need broken in before use.



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    Re: Fi SSD 15" Break in

    Quote Originally Posted by Tek18 View Post
    download it to an mp3 format and put the tone on a CD. Unless your HU has USB capabilities as most do today..

    ---------- Post added at 12:09 PM ---------- Previous post was at 12:08 PM ----------

    Quote Originally Posted by wenn_du_weinst View Post
    don't worry about it FI subs spiders are soft enough to not need broken in before use.
    Did not know this.



    Team Starr Mountain Nuthugger #4
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    Re: Fi SSD 15" Break in

    [QUOTE=its10v1;7816937]download it to an mp3 format and put the tone on a CD. Unless your HU has USB capabilities as most do today..[COLOR="Silver"]

    ahh okay thanks, i think im getting this head unit from someone on the forums, Alpine CDA-9886 , which has a AUX in on the back which i will wire outfront




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    Re: Fi SSD 15" Break in

    Quote Originally Posted by its10v1 View Post
    download it to an mp3 format and put the tone on a CD. Unless your HU has USB capabilities as most do today..

    ---------- Post added at 12:09 PM ---------- Previous post was at 12:08 PM ----------



    Did not know this.
    they will get louder and lower after a while but they won't break if you don't break them in. Very few subs require break in.



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    Re: Fi SSD 15" Break in

    Most subs don't "require" a break-in, but its a good idea. If you understand how most speakers are constructed, the suspension is in the spiders and surround. If the resin in the spiders is stressed, it can break or tear. It might not be noticeable at first, but the speaker will be a lot more prone to failure long term if hammered on right away (imho) or will at least greatly change the T/S parameters. It can stretch the suspension unevenly just like a spring that is pinched and stretched.

    Before the pissing matches begin, here is some research conducted showing the differences in T/S parameters between a new driver and various stages of break-in.
    http://www.gr-research.com/burnin.htm
    How the Audax AP100Z0 loudspeaker drivers were broken-in and the T/S parameters measured.
    Its similar to beating on a freshly rebuilt engine instead of properly breaking in the cam, lifters, etc.... One engine will either fail outright or show signs of wear a lot sooner than the one that is properly broken in.



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    Re: Fi SSD 15" Break in

    no one said that subs don't break in, I said that FI subs spiders are soft enough to be safe used right out of the gate.



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    Re: Fi SSD 15" Break in

    yes im very familiar with an engine break in, i will read these articles thank you very much !




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    Re: Fi SSD 15" Break in

    Quote Originally Posted by wenn_du_weinst View Post
    no one said that subs don't break in, I said that FI subs spiders are soft enough to be safe used right out of the gate.
    They can be used, but I wouldn't go full RMS on ANY speaker right out of the gate.....no matter how "soft" the spider is. That isn't the point, the resin in the spider and the triple joint stress is the point.

    At the bottom of the first article, Dan Wiggins of Adire Audio wrote:
    "The biggest reason there is a break-in period for drivers is the spider. The spider - for those who don't know - is a piece of cloth, permanent pressed, and dipped in epoxy. When you break in a driver, you introduce micro-cracks throughout the epoxy, which will make the spider softer.

    ALL mechanical systems will wear and all mechanical springs will get softer; in this case, it's by design. You break/crack a lot of the epoxy bonds (phenolics are used as well) that permeate the spider, and thus it becomes softer.

    We often see a 20% drop in Fs over a lengthy break-in, and we quote numbers for drivers broken in. Out of the box all our drivers measure high; beat on them for 40-50 hours, though, and they will be permanently lowered (Fs, that is)."
    There is a lot more to that article, along with another response from Credence Speakers "...consistent with THOUSANDS of measurements I have done. Anyone who thinks a woofer's parameters don't change due to break-in / burn-in is either ignoring the data, has lousy data, or is not doing much of a break-in. ".



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    Re: Fi SSD 15" Break in

    you really do not know how to read do you? Once again, NO ONE EVER SAID T/S DO NOT CHANGE AFTER A SUB IS USED. It will not damage a fi driver to go 100% on the brand new subwoofer. It will not crack, it will not tear, nothing will happen other then it will play lower and louder after it loosens up afterwards.



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    Re: Fi SSD 15" Break in

    I read and understand what you mean. If you want to go full tilt because its a magical FI driver (sounds like Dr. Subwoofer anyone?) then go ahead! Apparently all the engineers who design this equipment have no idea what they're doing. You can take your average sub and think it sounds great after hammering on it.



    '65 VW Bus
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