New box ideas for SPL

[jagblazer01]

I heard from some box builder that there is a formula to find your car's resonant frequency. Is this true?

Ive never heard of a formula for finding RF but all you really need to do is run a freq. sweep in your car and where it peaks at is where you should put your tuning around

[kirill007]

I heard from some box builder that there is a formula to find your car's resonant frequency. Is this true?

Lol, probably not.(or maybe there is?)

I said to tune higher because his RF is probably higher then 40hz.

[ElmosWorld]

My 08 jeep grand rf is high cause I tuned my box to 43hz and she was hitting twice as hard at 48hz. So I say she's in the50's.