Hello

I found a surplus EP500 woofer from an older repair.

As a little fun project, are there any generic subwoofer kits/parts I can use to make a sub?

Thanks.

There's a website with various DIY subwoofer resources. I don't know how far you'll get with Axiom's proprietary drivers, because their Thiele/Small specifications are proprietary.

https://www.diysubwoofers.org/definitions.html#tsparam

https://www.diysubwoofers.org/misc/index.html

It's not an impossible project, I once did a car audio project with a 10" Phoenix Gold and a generic carpeted sealed enclosure, knowing and learning absolutely nothing, with great results anyway.