anyone ever shattered their hatch glass with their system? just wondering

 

A local shop had am 82 Z28 and shattered the glass with 4 12's with about 4000 watts. A little more money than I would want to spend on a system though.

Brian

 

Absolutely can't happen. The interior can not build up nearly enough pressure. The rubber window seals would give and the body panels would bow out long before the glass blew. If the glass broke, somebody hit it with a hammer, or it already had a crack in it.

 

I agree, there is no way that they shattered the glass with a system. MAybe a sledge hammer, but not subs....

 

I bet you could do it if you built a box for the special purpose of breaking the glass

 

There is an eclipse around here that blew his back window 2 or 3 times before he got a plexyglass window.....had 4 12" L-7's crammed in that damn thing.

 

It is possible to shatter glass with sound (sympethetic vibrations), but to do so you would have to find the natural resonation frequency of the hatch and pump that exact pitch at an extrememly high volume.

That said,
Its not gonna happen unless you want it to.

-Doug

 

Exactly, and because of the compound curvature of the hatch, its resonant frequency is going to likely be far out of the audio spectrum.

 

He didnt ask is it is a likely thing to happen he just asked if anyone had done it. Almost any freakin thing is possible. Just because I have seen it happen and you have not doesnt meen that it wont happen.

Brian

 

Yeah, but anybody that can apply a lot of common sense and a small amount of factual knowledge can reasonably assume that at this given time, there aren't green monkeys jerking off into a bowl of pink cheese on the backside of the moon. I can't prove that it's not happening, but I'd bet my car on it.

Similiar situation with the hatch glass.

 

jim what if it was blue cheese!!! lol, j/k

That was a good one! :lala: :lala:

 

All bets are off with blue cheese.

 

I love jim...

 

buddy did it on his blazer about a year ago. I used to see him drive around with a decail on it for awhile. Then one day, no more decail or tint!

Told me he accidently hit the ATT button (aiming for eject)when the volume was already cranked backing out his driveway.

I cant remember what he had, its been so long. I know it was JL's though.
~Tim

P.S. - Jim = Funny.

 

There was this guy who cracked his hatch glass in a 96 or so V6, from "what I heard." So who knows if it was true. But it was also REALLY cold that day, like below zero, so it may have made the glass more brittle. If you've got that much power, and its that cold, you'd think he'd have the common sense....

 

HrdRockA4305-I believe it was this car that had the hatch shattered...

https://www.thirdgen.org/techbb2/att...&postid=444052

 

i think he erased the plate so no one keeled him

 

If I wasn't last mistaken, didnt ATT cut the volume like in hallf ?

 

yea, but on Kenwood Excelon's, the att can be full mute or half mute. You can set it.
~Tim

 

actually, it's a 6 or 20dB selectable drop... but the point is, in either case, it makes it quieter, not louder. Even if it was already attenuated and he hit it to bring it back up to full volume, the kenwoods do it progressively, not instantaneously. So that story still doesn't hold water. He probably backed into something and won't admit it.

 

It is kind of funny that since Jim hung out at Circuit City for a weekend he thinks that no matter what has happened he is correct. Why dont you expand your mind to the possibilities that, even though you may not agree, Sh*t does happen.

Brian

 

Actually, I never had the opportunity to hang around at Circuit City for a week. I was too busy working at car audio stores for 5 years, becoming an MECP certified installer, becoming a certified IASCA judge, learning what really goes on inside the electronics in my electrical engineering courses, and soaking in as much knowledge as possible from all of the talented installers that I've had the opportunity to learn from.

I've seen way too many 160+ dB cars with stock glass that don't break a damned thing to ever believe that some guy with a pair of 15s is shattering his glass. I'm skeptical because my mind has been expanded. I've learned things. A lot of things. I've learned to differentiate between what can really happen, and what is complete and total bullsh*t spouted off by ignorant teenagers that think they know everything.

Has it happened? Yes. Has it happened due to nothing except for the bass output? Not in the modest systems we're all talking about. When it happens, it happens because of something beyond the actual output of the bass. Maybe the glass was already cracked and nobody realized it. Tempered glass is extremely strong, and tempered glass as thick as a thirdgen hatch, bent into the compound shape it's in, is extrordinarily strong. Try to use some common sense and visualize an extremely thick, strong piece of glass surrounded by rubber and tin. What the hell do you think is going to give out first? If I started telling you that I saw people's roofs dent from the bass, you'd call me a liar. Well... that's more likely than glass shattering.

 

I'm loving this post. Jim has me crackin up.

 

Dang I thought Circuit city was the best Car audio store.......2 for 1 subs...



jk


but yea....

 

yeah, agreeing with jim. large spans of sheet metal (like the roof of a car) is a bit more flxible than a window. the metal is gonna flex before the glass even thinks about moving. since all the energy is going into flexing the metal, its not gonna bother the window.

 

Has anyone brought up the point that our side windows don't even have trim rings? Any pressure buildup would cruise right around the side windows before breaking any glass.

 

A loud system can definately shatter the rear hatch glass of an F-body!

...that is, as long as the box sticks up too far, and someone tries to slam the hatch down, and the box goes thru the window.

 

That's what I was getting at when I mentioned the rubber window seals.

 

I had a friend that pushed one corner of his windshield out in his Rodeo far enough to where he could stick his hand outside....of course, he consistently hit 156-157...

 

you can shatter the glass if the subs are aimed right at the glass. granted you have way to much money and are likely def if you have done this .

 

I seen my friend with 2 Jensen 8's in a cardboard plate shatter the windows in cars next to it...

 

maybe he had that system in his car, and then got out and smashed the windows with the amp or something.lol.

 

hey, about the ATT button, now i'm not even a car audio freak, but common sense tells me if he hit the ATT button and it shattered the glass, then did you think that maybe ATT was already engaged? and then he hit the ATT button and it returned to the cranked volume that the ATT was muting. thank you for realizing your dumb, J/P guys. Also, my buddy's bro shattered the back window of his Grand Prix, but he had been rearended, which probably weakened the glass considerably. Have fun guys, drive it like you stole it!!!!

 

I like this post its getting spicy.

bottom line, ANYTHING is possible, ANYTHING...but the question is if it is likely or not, i think thats the case here.

 

Just for the record, no, that car in the picture wasn't the one I was talking about. And I erased the plate cause, it just seems like the "right" thing to do. It no longer runs anyway.

 

well at least it wont ruin thirdgens rep with taht gay high rise spoiler trying to look like a *****

 

Actually, look like a ***** was exactly what he was trying to do. BTW - the car is NOT a T/A, its a V6 firebird with T/A GFX and get this, 'Vette emblems. No joke. Soon before it died, he also painted most of his interior yellow legend has it. But, this is pretty off topic so I'm gonna quit postin about it after this.

Just for the record, I took that picture.

 

I dunno bout the stereo's but, I hear a Mustang Cobra
with loud exhaust can drive by your car and shatter the
glass...
Monkey.. (Just Fun teasin bro)
(I just couldn't resist..

 

two words

 

Well I dont know about windows, but I watched my buddies mirror split in two then then front windshield cracked! I watched it happen. Talkn about a lot of sound tho!

 

usually if the hatch "implodes" on a 3rd gen it is due to the metal strip around the edge of the glass. They start resonanting, and glass will soon follow.

BTW, the rear glass breaks quite easy! Mine exploded when one hatch strut failed (pssst of gas escaping) while I was changing rear tires. I pulled myself up along the hatch opening as it came crashing down. It smashed my hand and then flexed/wobbled and EXPLODED!




$1500+ damage as the glass + metal trim is not cheap!

 

How much for the hand

 

att on my kenwood is instant

 

No damage to the hand, which made me even more mad!

 

The attenuation, or the return to regular volume? All of the newer kenwoods that I've owned/seen have attenuated instantly, but return to full volume slowly so that they don't shock you and your system, although I admit to not having any experience with their bottom-tier models.

 

the attenuation is instant the return is quick but not totally instant.
it 's a krc-508s cassette deck bot bottom of the line but very close to the top. when i bought it the excelon was one model up

 

That's because they don't update the electronics on their tape decks in most cases. They just reuse the same old electronics with a new display. On the vast majority of the cd players, the attenuation turns off gradually.

 

I know the ATT on my Pioneer Premier DEHP410 is instant low then instant loud...

the ATT on my friends last years excelon was instant down and slow loud on return...

 

:ATT Button:

JVC KS-F150

INSTANT HALF-MUTE (drops 50% volume exactly)

INSTANT RETURN (not even a slight increase time.. Instant.)

 

I have seen one friend of mine who has a black gta that cracked his ttops during an audio competition.Granted that we had put dynomat everywhere and he has 2 15's cerwin vega strokers in their and all powered by USA amps he constantly hit 160+.Man ttops vibrate hard when a system is that loud.I hope he plans on switching to plexi glass soon, cause he still wants a harder hitting system.With audio freaks like us a car is never loud enough .If your wondering,he has removed the back seats,the trunk if all custom fibreglass graphics and amp racks.I say anything can break when a system is loud enough,take your chances to find out what will pop first lol.