I might be interested in building a small passive radiator design subwoofer.
The budget is $1000. The goal is to have the most 18Hz and above output in an enclosure size hopefully less than a 15'' cube.
Are there any designs out there? I saw the 12'' Peerless XLS design, but I was hoping for a design revolving around a higher powered driver
If not, any suggestions on the driver, amp, and other stuff in a DIY build?