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converting port size [message #37824]

Fri, 16 August 2002 04:45

replay
Messages: 284
Registered: May 2009

Grand Master

hi wayne, i'd like to convert the premium stage 4 pi's port from the rectangular version to a 4" round. can this be done and if so what is the depth?

cheers,

george

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Re: converting port size [message #37831 is a reply to message #37824]

Fri, 16 August 2002 10:31

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

That's getting pretty small for earthshakers like the Premiums are. But you can expect the same tuning frequency if you'll make a 4" diameter port that's 3.5" long.

I recommend that you consider keeping the larger rectangular port if you can.

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Re: converting port size [message #37833 is a reply to message #37831]

Fri, 16 August 2002 10:57

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Messages: 284
Registered: May 2009

Grand Master

what about using a larger round port, say 6"?

cheers,

george

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Re: converting port size [message #37839 is a reply to message #37833]

Fri, 16 August 2002 13:29

Wayne Parham
Messages: 18786
Registered: January 2001

Illuminati (33rd Degree)

A 6" diameter port would be perfect - Make it 10" long. But the trouble is that you can't fit this port in the cabinet; It's a tight squeeze.

Then again, if the compression horn is mounted externally, you might not have any trouble fitting the 6" round port. And I know how you like to put those cool wood horns on top of the cabinets!

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