box tunage

[aftershockdb 10+ year member]

I got a 12" Cerwin Vega Stroker in a 4cube box made by Obcon. There are 2 4" flared ports on the front. Its got a slot design on one side and just ported on the other. How do I know what the box is tuned to. And is this box to big, some really low notes sound like its farting.

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[aftershockdb 10+ year member]

Help!!!!!!

 

[Millertime1028 10+ year member]

Wait, so it has (2) different kinds of ports on it ?

 

[Bass Addict 10+ year member]

with the vent on the back side and the two in the front,ill bet your sub is begging for mercy lol.thats y it sounds like its farting.ur sub is becoming unloaded

 

[aftershockdb 10+ year member]

nah its got just 2 4" flared ports on the front. thats it. the left side is a slot design inside the box.

 

[pr-festiva 10+ year member]

If ya need any help with it. im out near brockport. how long are the ports?

 

[aftershockdb 10+ year member]

5 1/2" deep, 4 1/2" wide but they are flared on both ends

 

[Millertime1028 10+ year member]

If im correct your box is tuned darn high .. Right around 48-50 hz. May be/ is why it sounds like shit on the low end . Playing to far below the boxes tuning freq. EDIT : did you measure the inside of outside diameter of the port ?

 

[aftershockdb 10+ year member]

my avatar is the pic of the stroker in that box. dont get me rong it does hit really hard, I took out my rearveiw 3 times but I still want it louder and lower. How do I go about doing that. Make the ports longer or what??????????

 

[pr-festiva 10+ year member]

yep ,but the extra port length will take up a little box volume also.

 

[Bass Addict 10+ year member]

u need smaller ports so the sub has some resistance on the low notes.the ports are too big.if it was me,i would take the the vent inside the box out,then make the two front ports long,barely coming off the back of the box and go from there.

 

[GAM3OVR 5,000+ posts]

Actually I think the vegas like 40 Hz tuning

 

[pr-festiva 10+ year member]

his problem is he is tuned to high. not the amount of port area just the port length

 

[Bass Addict 10+ year member]

maybe,but his box is farting.so something needs to be changed

 

[pr-festiva 10+ year member]

im guessing he is driving his sub below tuning, the easy fix would be to make the ports longer.How ever neither of us are standing at his car right now so there might be multiple problems