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SR wrote:dont over power the sub
based on the pics posted above those tears are due to over excursion of the subwoofer and thus resulting in mehcanical failure of the suspension
high temp conditions will also cause premature wear on foam suspensions
fespecially when the sub is played at full excursion while the temp of the trunk was very hot
(...Rovin...) wrote:well it looks like after what SR, said there u have 2 choices - d right way or get some1 locally to stick a generic suspension on it & accept however it works\sounds after that ...
fuzz_174 wrote:Why dont u contact the local dealers for JL Audio? They maybe able to help with shipping and maybe a discounted repair rate.
Sound and Security
662-3007
Brian Steele wrote:The surround contributes about 20% to the driver's parameters, so I wouldn't worry about the sub's performance changing drastically if you replace it - if of course you can find a generic foam surround capable of supporting the huge excursion capabilities of the W7 series .
You could try clear silicone glue on the INSIDE of the surround, just to keep it together so it doesn't get much worse. Not on the outside of course, unless you're aiming for that "ghetto" look...
Foam is usually a better surround material for high excursion subs, BTW. It got a bad rep from earlier versions which weren't treated properly and tended to disintegrate. The foam surround on my Shivas is still as good as the day I bought them. If ripped foam on W7s is a common thing, that suggests "design flaw" to me.
pimptacular wrote:and do u know better than the engineers at jl audio? i have a w7 going strong as ever after 2 years.. and the surround strong as ever, if it was a design flaw wouldnt it give out already or show signs of your so called "design flaw"?
pimptacular wrote:how about the idiots who use it improperly
nothing against the original poster
pimptacular wrote:if you drive a speaker beyond it mechanical and thermal limits what do you expect? most people are unaware they are doing that and then bawl "bai that speaka does rel pound it hungry for more powa"
pimptacular wrote:so do the typical user have better knowledge and more know how, than the engineers and research and development staff at JL? i know i surely dont
pimptacular wrote:and how come i havent been a victim up to now of this "design flaw"?
Brian Steele wrote:pimptacular wrote:how about the idiots who use it improperly
nothing against the original poster
Several persons on this same thread have highlighted the same issue. Are you suggesting that they're all idiots?pimptacular wrote:if you drive a speaker beyond it mechanical and thermal limits what do you expect? most people are unaware they are doing that and then bawl "bai that speaka does rel pound it hungry for more powa"
The original poster has indicated that was not the case. Also, it takes a LOT to drive a W7 beyond its mechanical limits. We're not talking about a cheap 8mm Xmax sub here, are we...?pimptacular wrote:so do the typical user have better knowledge and more know how, than the engineers and research and development staff at JL? i know i surely dont
Once again, the facts speak for themselves. If W7 drivers commonly experience surround failure as suggested here, even if Einstein himself was at the helm of JL Audio R&D, that's not going to change the fact that this suggests a design flaw. And BTW, Einstein was guilty of a few mistakes too .pimptacular wrote:and how come i havent been a victim up to now of this "design flaw"?
It's a good question. Maybe you're lucky . Maybe the environment is very different (perhaps the original poster's sub was located in position that caused the sub to be exposed to continuous direct sunlight (e.g. the rear deck) and yours is not. I'd still be concerned though if surround failure on this VERY expensive driver was a COMMON issue though. Especially after only two years of operation (hell, the foam surround on my $30 INF10 driver is still going strong after 11 years!). Perhaps it's something the local JL Audio rep should take up with JL Audio. Surrounds should NOT be failing on such an expensive driver after such a short space of time.
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