box slot subwoofer - demo slot super mania
$800.00
I've used RE's slot port box calculator for quite a few builds, it has some flaws but it's very straightforward once you get used to it. It compensates for port displacement and it gives you a cut sheet. RE Enclosure Calculator. I used it just yesterday, to build this: For these: 8.2 cubes, tuned to 31.5 cycles. happy 88 slot