Hi All

I'm new here,by result of my research re: 2 - new ALTEC 414-8C speakers.sn 01921 & 01971. I would like your opinions on enclosure types and drawings which will suit this model speaker. The free air resonance is 30Hz. The types which interest me most are:
Transmission line. Onken. Reflex. Extended LF reproduction is important.

Thanks