I know I knew this at one time, but I've honestly forgotten how this computes. Here's the story:

I'm currently building a "heritage" speaker pair that are reminiscent of 1950s Altec designs. I'm at the point where I need to install my port. The enclosure has a volume of 5.5 cubic feet, which I can easily enlarge to 6.5 cubic feet by opening up the pedestal area into the main enclosure. The woofers are Altec 416Z with the following T/S parameters:

Xmax: .15 inches

Re: 6.4 ohms

Vd: 19.2 cubic inches

FS: 23.9Hz

VAS: 22.74 cubic ft

REF: 3.3 %

Qts: .25

Qms: 6.1

Qes: .26

VID: .20 liters

So, how do I now determine what my box tuning frequency should be? Thanks in advance, folks.

GeeDeeEmm

I'm currently building a "heritage" speaker pair that are reminiscent of 1950s Altec designs. I'm at the point where I need to install my port. The enclosure has a volume of 5.5 cubic feet, which I can easily enlarge to 6.5 cubic feet by opening up the pedestal area into the main enclosure. The woofers are Altec 416Z with the following T/S parameters:

Xmax: .15 inches

Re: 6.4 ohms

Vd: 19.2 cubic inches

FS: 23.9Hz

VAS: 22.74 cubic ft

REF: 3.3 %

Qts: .25

Qms: 6.1

Qes: .26

VID: .20 liters

So, how do I now determine what my box tuning frequency should be? Thanks in advance, folks.

GeeDeeEmm

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