posted
After building a box for an 02/03 Kicker Solobaric 12 inch L7 woofer (dual 4ohm) and the customer having it for three days the magic white smoke appeared.
The box was 3 cubic ft sealed gross (Minus diplacement of the woofer and material used to build the box, 18mm MDF) the amp running the woofer was a Kicker KX600.1 Gain was set on minimum. LPF set @ 80hz for the woofer.
Now the distrubuter in Australia doesn't want to cover the woofer under warranty because the VC is charcoal (Fair enough) but it has laid the blame on the enclosure as it was too big for the woofer.
Do you think that the box is too big for the woofer???
I'm pretty confident that the bloke using it was just thrashing it and the amp was clipping and this melted the VC of the sub. (It was really toasted!)
-------------------- Australian Street A record holder @ 148.9Db Australian Street A 2004 season Champion
posted
You have to watch your enclosure design to be sure its going to give you the spl you want-it may not,so he turns it up more,putting too much power for too long through the subs.
Have you seen the owner using the sub?maybe youd know if he knows what clipping is,or not.
The box being too small or large will only affect excursion really..which isnt to blame here.
posted
Originally when the bloke picked the car up after having the system fitted he was over the moon with the ammount of output he got from the system.
From what he tells us he is happy with the output from the current system, he just doesn't want to be blowing stuff up all the time.
-------------------- Australian Street A record holder @ 148.9Db Australian Street A 2004 season Champion
posted
from my experiments the enclosure has alot to do with thermal and mechanical power handling
Aaron
-------------------- old system 2400watts RE15XXX a 153.9 on a linear X new setup-2 10w3's and 1600w Posts: 670 | From: spring lake NC | Registered: Aug 2002
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posted
That box is quite big for a 12". In fact, that'd be the biggest net volume I'd use for a ported enclosure(daily tuned).
As long as the suspension is fine, and it's only the coils, that means that it was receiving too much power, of it was defective, as was mentioned previously.
If it was set correctly, my only guess(barring a defect) was that the customer, or the customer's brother/friend/cousin "knew" how to make it louder, got gain happy and poof. They reset it, and came back to you claiming it "just fried". That's my guess as to what probably happened.
BTW, did you find the maximum volume point/sub level and educate them why not to exceed it? Also, 80hz on the xover is a little high considering that sub is going to be playing pertty low in 3 cubes. I woulda bumped it down to 50-60hz.
quote:Originally posted by aaron: from my experiments the enclosure has alot to do with thermal and mechanical power handling
Aaron
explain?
the thermal rating is, in laymans terms, how much juice the coil can take before it melts
air excursion
a box affects both of these and both have a impact on a drivers cooling ablities be it negligible or not
mechanical is definitely affected far more then thermal and you should be treading near full excursion before you get anywhere near thermal in any "normal" install
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