Proper Sub Break In Period?

hey I have heard of sub break in periods and everything, but I am wondering if this is true or what I should do. Is there a certain amount of hours a sub should have before really hitting hard to loosen up? I recently finished my enclosure with 2 Perfect 12.1s and they sound excelent, the sound quality is just amazing (qtc = 7.52 ) but when i hit the boosts on the amp, they reallllly hit hard, but sound fine doing it, absolutly no clipping at any time, but they get loud and make a full massaging vehicle, just wondering if I should take any precautions. Let me know what you think

Also I started a post on the Install page of pictures of the project. Let me know what you all think on that post too. thanks alot everyone.

here it is
https://www.the12volt.com/installbay/forum_posts.asp?tid=70238&PN=1



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99 Blazer LT.   Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)

Na break in time is a myth. After your subs have played for a bit they will get a little louder.

greg_jobes wrote:

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Na break in time is a myth. After your subs have played for a bit they will get a little louder.

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Isn't that a contradictory statement? How do they get louder after a while with out something physically happening to them?

I believe their is a break-in period for speakers, as speakers are motors and have mechanical parts that will eventually wear in. The spider will evetually loosen up. Foam or rubber surrounds can eventually stretch.

My subs and notably changed during the first number of hours of play. As did my components, especially. Now how to break in a speaker can be left to argue, I would advise a moderate level for some time.

Nice box, looks real clean.

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deff dont try playin them as loud as they get. you do need to break them in for a few hours. i had a pair of kicker 15 L7 and i didnt break them in and they blew about a week later. had the required rms and everything . just didnt break them in. so yea when you wanna play them real loud just remmeber if you dont break them in properal;y then you wont get as long as a lufe out of them

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6 memphis PR 15's sealed enclosure. indash mobile video system. alphasonik HC800PMA 3000 rms
MECP first class installer

ABSOLUTELY break-in is a myth. The only function for break-in would be in free-air, with minimal power at the Fs of the driver, for 12-18 hours. This MIGHT loosen the suspension a TINY bit, enough to throw some of your mechanical measurements off a little... THEN measure the driver for it's parameters and then you can build the enclosure correctly.

Once it is in the enclosure, it's too late to "break them in", if the enclosure is built for them in a "non-broken-in" state, then it's gonna be the wrong size after "breaking them in". Contrary to the stories you may have heard, not breaking a driver in will NOT "cause" it to blow. PERIOD. The electrical power handling is the same, either way... MECHANICAL power capacity MIGHT be a tiny bit lower, due to the previously mentioned (possible) loosening of the suspension, but not enough to cause the destruction of the woofer. Most likely, the enclosure was built wrong, or the gain was improperly adjusted.

I have never in my life "broken a speaker in". WFO from the minute I get them. Have I ever blown a speaker? Nope. 'Cause it won't happen. When somebody shows me EVIDENCE, not just stories, I'll re-consider my position, but when I am told by an engineer from Harman International that even THEY don't break speakers in, I don't believe it is necessary.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

I have never worried about break in. I never had any trouble with not breaking in a sub. I don't crank them full blast, but I never crank it full blast anyway. I love it loud, but never all the way up.

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Big Dave