From: ideas to reinforce sunroof and or glass - Scion Tc

[SPLScion 3]

hey, i know what u mean.

what is your loudest metered score in that car with doors open and what frequency?

In my last setup, i did a 148 flat at 42hz and a hair over 147 at 34hz. When my sunroof was open, the small piece in front that flap up would absorb the most flexing while the sunroof itself would move just a little.

When the car is sealed up, there is no flexing issue. That setup was 2 12s in the hatch and 4400w of power tuned to 38hz.

My new setup is 4 15s off of 7000w tuned somewhere between 32-40hz... wont know til i start test n tuning.

Anyways, my original plan was just to listen to music with all doors and windows shut on low notes and burp in the high range because my car is peaking around 60hz with this wall i have.

If you think u or I is gonna have a problem, i will be contacting my installer tomorrow about a project i might have him do.

ACE Security Level 4 Laminate Sheeting for your sunroof(or all glass on the top of the car. Must be accessible from inside to install.)

It costs around $8-12 per sqft plus $40 shipping.

This sheeting is 20 mils thick! They warned me about installing this on my sunroof to be VERY careful and not break the glass... this is why i gotta contact my installer about it and make sure he can be prepared for this new project.

I have Level 3 all the way around my car right now which is 14mil thick.

ACE Security told me this sheeting should prevent the glass from cracking. OF course it may flex but this sheeting is break proof to a degree and somewhat bulletproof.

1st let me say sorry for slow reply, apparently I have been clicking wrong button to read new posts and only reading new threads... i am a dumbazz sometimes... ok alot of times sigh... esp. since I used to be a mod. on a poker forum for years lol! of course it was a dif. format forum but I digress.

I am def gonna have some prob. cuz my new set up plans have changed dramatically. I dont want to say exactly what my plans are cuz I dont want to jynx myself (once the ink is dry on contract I'll def. be letting ya'll know, but Dr. Watson could prob. guess ;-)) but I can say this: will likely be running a min of ~7000w rms and a likely max. of 17,000w rms off of one to 2 amps max. all this to 2 15" subs or 10,000w rms to 1 18" sub of course depending dep. on how things go maybe much more.. dare to dream right. So i have considered replacing the glass with metal to eliminate my worries. with 7000w if I were you i would def. do the uprade you speak of, I will def. check it out as well as an alternative to metal work. I'll be posting the build log for this system on the site.

I am suprised that @ 148 you didn't have much vibration in the glass w/ all windows closed ect. maybe mine is not as secure as yours cuz @ 140 flat it looks like the roof is going to shatter, I am starting to think I need WAY more sound deadening. though like your car the most flexing is on that "metal bar" under the sunroof (at front of sunroof the thick black bar) it just seemed like no matter what I do the glass shakes big time. the highest i ahve had the car metered at was 145 @ 40hz at least in this car ;-) and I thought for sure the glass was a gone'er