I built some speakers once. I bought a 6.5" driver that was 4ohm, built a cabinet, literally drilled a hole in the front of 1/4" plywood hooked up pos and neg and went with it. I was 16, knew jack about coaxials, I literally ran a 6.5" woofer full range. The port was more of a leak, zero tuning frequency. They made sound yes, not good sound though.
I agree the diy you see today is not 100% diy. That's because to get sound that beats 1000$ speakers for 200$, someone else needs to get down and dirty. They preselect parts that work. So we buy them with maximum bang for buck in mind. If you wish to buy tons of parts and do testing feel free, but just because you are in the diy section does not mean we are all professional speaker builders. Sad but true.
- 6 BA CR6 array center channel, QSC AD-S82 L/R, 4 jbl 8330a surr , 8 jbl 12" subs w/Inuke 6000. JVC rs420, Denon x4000, Sony x800 -