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New member Username: WolfofozCHANDLER, AZ US Post Number: 1 Registered: May-04 | I've built sealed boxes before but this is my first ported box. I'm having trouble finding out how to figure port size and depth. If somebody could help me out I would be greatfull.This is what i've got Pyramid PW10290 500 watt rms 10 inch 4 ohm 2 inch voice coil fs 35.8 qms4.83 qes 0.59 qts 0.53 spl 85.6 vas 1.091 If I was to build 1.091 cube what portint is needed? |
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Anonymous | im sure jay amaro would sell you somthing!!!! |
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Gold Member Username: GlasswolfNorthWest, Michigan USA Post Number: 2954 Registered: Dec-03 | www.the12volt.com has a port length calculator. for a 10" sub you can use 3" diameter port tubing |
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New member Username: WolfofozCHANDLER, AZ US Post Number: 2 Registered: May-04 | Thanks I looked at that site. It seems a 3" port 40.87" long(not possible due to the fact the box is not that long) or 2" port 9.5" long is what it's calling for.I heard someone say that it's not good to use smaller the a 3" port. Any thoughts on 2" vs 3". |
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Silver Member Username: VipersbymsPost Number: 139 Registered: Apr-04 | im not sure what you put in for the tuning frequency, but it shouldnt be 40.87" long. tuned to 30hz, it would be like a 17" long port. |
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New member Username: WolfofozCHANDLER, AZ US Post Number: 3 Registered: May-04 | Ok. at 30hz, it's 16.65" but that is still a little tight. Any other idea's. |
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Gold Member Username: GlasswolfNorthWest, Michigan USA Post Number: 2972 Registered: Dec-03 | yeah change the box dimansions. that or put a bend in the port. |