Altec Valencia b port size

[DarcyL]

Good morning Darcy

Which version of the 416 do you have ? Also what kind of music do you listen to? According to winISD the difference will be marginal with either the 416-8b, or the 8c. Both will reproduce down to about 40Hz. if you want to go into the very low bass frequencies you will need a sub woofer. You may like it just as it is, and depending on the room, the bass may increase as it goes down. As you know the room makes a huge difference.
As to phasing , go to the library section of this site, find the Altec 1974 enclosure manual and on pg 14 you'll find a chart showing you how to wire your box.

I hope this helps.

Ed

Thanks for the reply, I have 416-8a versions, and I listen to classic rock and jazz mostly-