First time you set off a car alarm

[RooTxBeeR]

Back when I had my old amp putting out around 400 watts to 2 10's in a prefab sealed box, when ever i went past a van in my town playing a dubstep remix of A millie, when a certain high note hit it would always set it off.

So do you happen to know if the higher or lower notes are easier to do it with? I wasn't actually paying attention to that part and White Girl has a 30Hz note as well as a 50Hz note

I am actually leaning on the higher note, because since I that amp fried, I built a new box and the subs are running on around 50-70 watts in a custom ported box, and is SIGNIFICANTLY louder. The box is tuned to 32 Hz so I lost a lot of my high end response, and playing that same song I cannot do it. When I would set it off I only could do it when I was driving right next to the parked van so I had to time the bass hit just right. There was a few other times to that when passing a car I would notice the hazards flash a few times like alarm systems do just before its about to go off.