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Port size Thermionic three [message #35756] Mon, 01 April 2002 10:41 Go to next message
frankmalz is currently offline  frankmalz
Messages: 11
Registered: May 2009
Chancellor
How can I convert the portsize of the Thermionic three into a diameter of 7cm?
Thank you for any reply.

Frank

Re: Port size Thermionic three [message #35757 is a reply to message #35756] Mon, 01 April 2002 13:59 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18723
Registered: January 2001
Illuminati (33rd Degree)

The diameter of the port used in the Thermionic three π loudspeaker is 6.35cm. The port is very short - only 3.18cm long - so it is really just a hole drilled in a 3.18cm baffle. Here in America, 1.59cm thickness wood panels are common, so it is easy to form the right thickness just by gluing a small panel on the inside of the front baffle, and drilling a 6.35cm hole through it.

You can find adjustable drill bits that will make it easy for you to cut a hole this exact size.


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