Port help

 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2991
Registered: Jan-05
i've had this pre-fab box for awhile and never new what it was tuned to so i was hopeing some1 could help me out, the box is w-15/h-13/d-13 and the port is h-11/w-1/d-9.5 all in inches, so if some1 could tell me whats its tuned to or give me the formula to figure it out it would be greatly appreciated.
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2993
Registered: Jan-05
any1?
 

Gold Member
Username: Insearchofbass

Post Number: 5020
Registered: Jun-04
1.033 cf if it's interior measurements are 13.5 x 11.5 x 11.5 and ifyourport measurements are 11 x 1 x 9.5 your port tune is 47.46 hz

heres the program I used

http://www.carstereo.com/help2/Articles.cfm?id=31
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2994
Registered: Jan-05
OMG sean, haven't seen you on here in a long azz time, hows everything going.
 

Gold Member
Username: Insearchofbass

Post Number: 5021
Registered: Jun-04
goin pretty good been busy with things and havent had online for a while now ...im on someone elses pc right now
 

Gold Member
Username: Insearchofbass

Post Number: 5022
Registered: Jun-04
did I use the demensions you wanted me to use?
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 2996
Registered: Jan-05
yep i put the numbers in and got the same tune you said, glad to see your on, you still building boxes all the time?
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 3002
Registered: Jan-05
also i was thinking of adding pollyfill to the box since its way too small for the kicker comp 12 thats in it, i figure if i add pollyfill the port tune will become lower is there any to calculate how much lower?
 

Gold Member
Username: Cenus

Hicksville, Ohio

Post Number: 3003
Registered: Jan-05
nvm mind on the pollyfill question i just seen the thread between you and polo debating it, i think i'll add some to see if i notice a difference anyway, its not very exspensive.
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