Enlarge VTF-3 MK 2 Subwoofer 3" ports to 4"?

[tzim]

I have a VTF-3 MK2, which has 3" ports. Any thoughts on making the ports 4" in size? In other words, this would be a conversion of the VTF-3 MK2 to a VTF-3 MK3.

I'm confident I can create a simple jig and use a router to make the 3" ports into 4".

Will you sell the 4" bent port inserts? If so, at what cost?

Thanks...

[Ddavidson]

You need the right length and the enclosure is simply not big enough internally to hold two 4" ports. A single 4" port is possible (Dr Hsu has done this on a prototype) but not for duel 4" ports.

Ddavidson