how do i know what my ported box its tune too?

[intense2u 10+ year member]

i build my ported box but i dont know what its tune too 9cubicfeet. anybody know how to check it? thanks

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[Bettr n' Revrse 5,000+ posts]

We need dimensions of the box and the port...

 

[Kangaroux 5,000+ posts]

bracing for lulz

 

[RAM_Designs 5,000+ posts]

You built a ported box and have no idea what the specs are? This sounds bad...

 

[intense2u 10+ year member]

the box is 42"x15x27 the pot size is 10"x51/2"x11"

 

[intense2u 10+ year member]

We need dimensions of the box and the port...

the box is 42"x15x27 the pot size is 10"x51/2"x11"

 

[RAM_Designs 5,000+ posts]

8.07ft^3 before sub and port displacements, and it looks like you're tuned in the mid 30's assuming you'll have about 7.65ft^3 after you count port displacement. Knock that down to 7.3-7.4ft^3 if you're using a couple of subs, and you're looking at 34-35hz. What subs are yo using? More than likely you're a little small on your port opening size.

 

[intense2u 10+ year member]

yea i got 4 12's on it.

 

[intense2u 10+ year member]

im using hifonics olympus 3200 watts 1600rms

 

[RAM_Designs 5,000+ posts]

So not counting bracing it's probably 7.25ft^3 at 35hz.

 

[intense2u 10+ year member]

i had to build the box in my trunk cuz i have a small trunk lexus es300 but if i make another port would that b fine cuz i cant take it out but i could make a port.

 

[intense2u 10+ year member]

anybody has a input on this. what should i do? leave it or make a bigger port

 

[intense2u 10+ year member]

my questions is should i make another port on my box and would it hurt my box? i have 4 12's 3200 watts 1600 rms each. i made the box my self and i just found out the tune on it 35hz. if i make another port on it would it make it better cuz i think the port it small here is my dimension the box is 42"x15x27 the pot size is 10"x51/2"x11". should i make the port bigger or add a port cuz i can take out the box i build it in the drunk. check out the vid on youtube (4 12's OLYMPUS , 2 HIFONICS BRUTUS TOTAL 11,600 RMS) plz help thanks