Enclosure recommendations

[TLS Guy]

There is more to small ports than port noise. The main problem with small ports is they compress the air in a bass box. This compression results in suboptimal performance. I fail to see how building a slot port is more difficult than building the box itself.

I think 35 m/sec is fine for a bookshelf with a rear firing port, but not a sub.

We are talking a chasm is the total air flow difference not just velocity.