Was probably already cracked then the flex caused it to crack more. Took me over 155 to break my windshields.
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There was already a crack in that glass.How do these subs crack windows and only 130 dB?
That crack is forming because there was already a chip there in the glass. Isobaric mounting isn't magic and is expected to be less efficient than the same number of drivers mounted normally in sufficient airspace.Possibly proof you don’t actually need that much DB to crack a windshield.