Goofy question

[Midwestzx2]

In a zx2, how high of db's would you need to be hitting to be flexing the front and rear windows and puffing the side ones out a good 1/4-1/2 inch? Along with the trunk lifting by the window up to 3/4" ? Just kinda curious.

[random_hero]

A million bajillion i think.

[dragon2200]

Probably about 140-150 Flex is created by the air pressure from the subs not the db's

[JonsZX2SR]

It depends if the car is being excited at a resonant freq. or otherwise. A quantitative analysis is too complicated for this post, but if you could put all the acoustic energy into a narrow freq. at a system resonance, you might be able to induce flex at 105-110 dB.

If the acoustic energy were broadband you might need 140 dB or more, with the fraction exciting modes causing noticable flex about the same as the energy in the narrow band given above.

Since sound pressure is generally measured across the entire useable freq. range, you would have to determine which freq. were exciting which modes, and which were then associated with body or window flex.

[dragon2200]

Very true resonate frequency could cause flex if you could figure out the cars resonate frequency which would be tough to pull off without sound testing equipment but is entirely possible off of pure chance but highly unlikely.

How many subs are you running, how many what's rms, how many watts is the amp and is the box sealed or ported as a ported box would create very high spl compared to sealed.

[Midwestzx2]

as of right now, 2 12" power acoustik fubar 12" in a large sealed box. The amp was just switched over to a HiFonics BXi2008D 1300 rms @ 2ohm. The panels etc arent moving just at certain frequencys, but at a broad range, deeper bass of cource moves them farther.