best resonance frequency for 01 grand am

[ripper 0]

Im trying to get the TEST SPL tuning for a box in a 01 Grand Am, 2 door. The box is going to be 4 cu ft for a SSA Icon . I'm trying to design a SPL box for a competition coming up on July 8th so any info anyone can help me with would be awesome.

I was told that the best SPL tuning would be 5 hz below the resonance frequency of the vehicle, not sure how to spell resonance, but hopefully nooe gets too confused.

Thanks

Dustin

[ripper 0]

36 views and NO reply? someones gotta know something

[helotaxi 46]

A car's resonant frequency is not something you care to hit with your system. It is the freq at which the panels will sympathetically vibrate and the car will destroy itself. What you are looking for is the peak in the transfer function. That will vary depending on the size, location and facing of the enclosure.

[Aaron Clinton 2,372]

If you don't have access to a mic, you can run a sweep above tuning freq. Oh and many of the views are guests or search engine spiders.