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Reload Thread: Calling BS on "breaking in" subwoofers, prove me wrong.

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    Calling BS on "breaking in" subwoofers, prove me wrong.

    There's a lot of talk here about peoples subs getting louder or noticeably changing TSPs after some unspecified "break in" period. There have been some scientific studies proving that after the first few seconds suspension is stretched out pretty much as well as it will be and any slight varience is generally less than normal variations right off the assembly line.

    SO who here has had subs that have metered differently (with no other variables changed) over time playing them? (I sure haven't and I owned a TL and metered often last year).

    I've also given plenty of subs full throttle right out of the box (or right after the glue dries with ones I build) and the ONLY things that have failed are poorly made junk brands; so I'll further state that this myth is a cop-out by manufacturers who use low quality materials and glues and third world child labor to excuse products that fail.

    Someone post evidence to convince me otherwise.







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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    yeah i broke mine in soon as i installed them full blast lol




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Well. I can't say it meters differnt.
    I can tell you normal speakers have a break in period where you will hear a differnce in sound quality. Not really SPL.




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by lilpride View Post
    Well. I can't say it meters differnt.
    I can tell you normal speakers have a break in period where you will hear a differnce in sound quality. Not really SPL.
    Can you provide links to the RTA measurements or TSP data before and after that show this phenomenon?




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    When we test our products on the bench they are tested wide open out of the box -- the CMS will change over some extended play time, though, resulting in a lower FS. This typically doesn't take too long at maximum throw. Perhaps an hour or two of actual play time (week or so in a customer install typically I'd say).

    Stiffer spiders will have a massive difference in CMS from no play time to several minutes at full stroke. Of course playing them hard at first shouldn't damage them.




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    I pretty much cut loose on my new subs out of the box The high notes hurt just as much on the first day as they do now, It seems like there is much better low end extension, but I would say that only took about 3 hours of playing C & S This 2 weeks or whatever for break in is BS and playing them quiet for a while is BS too. I always beat on them. I will say that they dont always get low at first but you can tell as the suspension loosens up in the first day or so where it gets to where it should be.

    If you had posted this a week ago I would have done a now and later on the TL for you.



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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    well , my 8's werent broken in , now that they are broken in i'm way louder and my voltage drop has increased.




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by sundownz View Post
    Stiffer spiders will have a massive difference in CMS from no play time to several minutes at full stroke. Of course playing them hard at first shouldn't damage them.
    Thanks, Jacob, a few minutes and lower FS I could believe. Would really like to see if we can actually tell the difference on RTA or pulling TSPs. It is my understanding that the motor force is such a dominant factor in most subs that many other variables don't effect actual performance as much as some conventional wisdom would suggest.

    I plan to build up some new subs this weekend and I will take some TSPs before running them. Someone remind me to take measurements after a few weeks (if they survive that long)

    Also seems that Jacob isn't a guy that will blame mechanical failure on some mythical "break in" to try to weasel out of warranty claims.




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by Bassin Buick View Post
    well , my 8's werent broken in , now that they are broken in i'm way louder and my voltage drop has increased.

    What precisely is "way louder" in decibels? Actual measurements please.



    Definition of Objective and Subjective
    Objective is a statement that is completely unbiased. It is not touched by the speaker’s previous experiences or tastes. It is verifiable by looking up facts or performing mathematical calculations.
    Subjective is a statement that has been colored by the character of the speaker or writer. It often has a basis in reality, but reflects the perspective through with the speaker views reality. It cannot be verified using concrete facts and figures.



    Let's stick to OBJECTIVE evidence please.




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    will be installing some brand new 15's in my truck in the next week or so, I have access to a termlab also.

    I'm interested to see if there's a big difference in #'s after the suspension has had a chance to loosen up...after a week or so



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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    I remember reading some T/S specs and it noted that *specs were taken after a week break in period.

    cannot remember if it was dc subs or tc epic 8? maybe neither of them, but i saw that somewhere




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by bhsdriller View Post
    will be installing some brand new 15's in my truck in the next week or so, I have access to a termlab also.

    I'm interested to see if there's a big difference in #'s after the suspension has had a chance to loosen up...after a week or so
    You just made me subscribe to this thread.

    I will say that after a month or so, the tweeters on my Kenwood co-axs seemed to get a lot smoother....but I'm not really sure if that was the speaker changing or me just getting used to the sound.



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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Will definately remember this thread and write a note to remind myself to update



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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by bhsdriller View Post
    Will definately remember this thread and write a note to remind myself to update
    are you ever around the orange county area? 15s seems pretty quiet, but id love to hear




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    Re: Calling BS on "breaking in" subwoofers, prove me wrong.

    Quote Originally Posted by sobe3yourself View Post
    are you ever around the orange county area? 15s seems pretty quiet, but id love to hear
    only 100db...



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