New Ported box/Subsonic Filter

[iiixtremeiii 10+ year member]

I've finally built a ported box for my Kicker L7's. It's a total of 4cft tuned to 37hz. The amp I'm running is the Kicker KX1200.1 and it does have a subsonic filter but it's not able to be set at a specific hz. I read the manual that it's set at 25hz at 12db. Will this work for my set up or do I need to get a f-mod at 30hz to make sure my woofers will be safe.

Thanks in advance...

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