Question about port size conversion

JCoffey · 6th February 2008, 01:52 PM

So I have plans that call for a port 2 3\8" diameter by 5 1\2' long. I cant find any PVC that diameter. How to I figure out how much two smaller diameter ports should be?

JCoffey · 6th February 2008, 04:14 PM

Nevermind. Im an idiot. Wastn paying attenion and the plans call for 2" PVc for the port, whch the outer diameter of is 2 3\8"

BlueWizard · 6th February 2008, 05:01 PM

None the less, if you do decide to retune your ports, here are some links to port length calculators that you can use.

Box Tuning Calculator -
http://www.2k4civic.com/portcalculator.html

Linear Team Vent Calculator -
http://www.linearteam.dk/default.asp...ventcalculator

Calculate Your Vent Length -
http://www.carstereo.com/help2/Articles.cfm?id=31
(scroll down the to second calculator)

Port Length Calculator -
http://www.the12volt.com/caraudio/boxcalcs.asp#por

You can also use these calculators to determine at what frequency you are currently tuning your ports.

Just enter the port diameter, internal box volume, and keep changing the desired tuning frequency until it gives you your known port length.

Just trying to help.

Steve/bluewizard

JCoffey · 6th February 2008, 05:56 PM

Thanks for the links

6th February 2008, 01:52 PM	#1
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	Question about port size conversion So I have plans that call for a port 2 3\8" diameter by 5 1\2' long. I cant find any PVC that diameter. How to I figure out how much two smaller diameter ports should be?

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6th February 2008, 04:14 PM	#2
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	Nevermind. Im an idiot. Wastn paying attenion and the plans call for 2" PVc for the port, whch the outer diameter of is 2 3\8"

6th February 2008, 05:01 PM	#3
BlueWizard diyAudio Member Join Date: Jun 2007	None the less, if you do decide to retune your ports, here are some links to port length calculators that you can use. Box Tuning Calculator - http://www.2k4civic.com/portcalculator.html Linear Team Vent Calculator - http://www.linearteam.dk/default.asp...ventcalculator Calculate Your Vent Length - http://www.carstereo.com/help2/Articles.cfm?id=31 (scroll down the to second calculator) Port Length Calculator - http://www.the12volt.com/caraudio/boxcalcs.asp#por You can also use these calculators to determine at what frequency you are currently tuning your ports. Just enter the port diameter, internal box volume, and keep changing the desired tuning frequency until it gives you your known port length. Just trying to help. Steve/bluewizard

6th February 2008, 05:56 PM	#4
JCoffey diyAudio Member Join Date: May 2003 Location: Atlanta, GA	Thanks for the links

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