finding tuned frequency of loaded enclosure

[bd_slim 10+ year member]

i have an alpine sbs-084bp (8" 4ohm in bandpass box). how do i find out what frequency its tuned too so i can properly set up my amp? it is a loaded enclosure that was offered by alpine. i did a google search and found nothing useful. is the only way to disassemble and measure?

thanks

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[Trey803 5,000+ posts]

you still didn't post your box parameters

 

[DNick454 10+ year member]

You're going to have to give us the exact dimensions of the inside of both the chambers (sealed and ported) as well as the size, number, and length of the ports.

 

[bd_slim 10+ year member]

i'll have to tear it apart tomorrow and post dimensions.

thanks

 

[tinmanchris217 10+ year member]

I'm all about tearing stuff up, but couldn't you just run a sweep of tones, with the doors and windows open (defeat cabin gain). Then see where the response rolls off (upper and lower)?

This should give you a rough idea of how to set your amp. If you need exact tuning specs, this won't help too much though.