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Old 25th February 2006, 11:22 PM   #1
eag is offline eag  United States
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Join Date: Jan 2006
Location: blacksburg, va
Default Vent Length

I'm a newbie to winisd but I was messing with a box for the TB sub up on the PE home page and for a vented box it wanted a vent length of 11 feet. Whats up with this?
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Old 26th February 2006, 12:10 AM   #2
Volenti is offline Volenti  Australia
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Join Date: Aug 2003
Location: Australia
Small enclosure size + large vent area + low tuning frequency = stupidly long port.

It's one of the things you have to compromise on when you design any enclosure.
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Old 26th February 2006, 12:26 AM   #3
eag is offline eag  United States
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ah, i see
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Old 26th February 2006, 01:31 AM   #4
simon5 is offline simon5  Canada
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Join Date: Nov 2004
Location: Québec, Québec
Yes, large enclosure will shorten the vent alot. If you use a smaller port area, for example a 2" diameter instead of a 4" diameter, it will shorten the vent alot too.

You can also use a passive radiator in a small box, then you bypass all those stupid problems for a small box that you want to go vented instead of sealed. No vent noises either.
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