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Box size and Tuning frequency

 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 34
Registered: Jan-08
What would be a good box size and tuning frequency for a 4" ported box that will be holding a single 12" Alpine Type-R? I am going more for SPL than SQ.

Thanks,
Kevin
 

Gold Member
Username: Mendonmafia

USA

Post Number: 1174
Registered: Aug-06
2 cubes tuned to 32-36 hz depending on vehicle size.
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 35
Registered: Jan-08
Its an olds alero. (basically a grand am) what frequency would you suggest? Also what would be the difference between 32hz and 36hz?
 

Gold Member
Username: Insearchofbass

Post Number: 7974
Registered: Jun-04
do not use a standard four inch port ...its not enough youll have tons of port noise... even with a 4 inch aero youll probably have decent port noise
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 36
Registered: Jan-08
what would you suggest? a 6 inch?
 

Gold Member
Username: Mendonmafia

USA

Post Number: 1176
Registered: Aug-06
slot port. in your car id tune to 34ish hz there not that big.
 

Gold Member
Username: Insearchofbass

Post Number: 7985
Registered: Jun-04
yes make a slot port... 28 square inches
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 37
Registered: Jan-08
okay so to tune to 34hz in a 2 cube box what would be the dimensions of the slot port(length, width, and depth)?... If you know of any calculators that can figure this out I can do the work myself.
 

Gold Member
Username: Insearchofbass

Post Number: 7992
Registered: Jun-04
http://www.carstereo.com/help/Articles.cfm?id=31

select square and yes to slot port
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 38
Registered: Jan-08
Using the calculator I am getting a port length that maybe too long for my box. Ill put up pictures.
 

Silver Member
Username: Surferdude9371

Im BTL Bumpin

Post Number: 645
Registered: Mar-07
ya i think that calc is Fed up i have the same prob
 

Platinum Member
Username: Rovin

4 10 Pioneer...

Post Number: 13110
Registered: Jul-05
thats y u make it into a "L" port

try this then http://www.subwoofertools.com/forum/ported-box.asp?Ew=30&Eh=15&Dia=6&Xmax=18.2&V d=.071&NumW=1&Vb=2&Fb=32&Qts=&Vas=&Fs=&CE=0

its alot simpler to use .......
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 39
Registered: Jan-08
I had to make the port go out of the box so that it would be long enough. If there is nothig I can do about it will this set up still work?

Upload
 

Bronze Member
Username: 2000celica

Roanoke, VA U.s.

Post Number: 97
Registered: Jan-08
making the port a little deeper in length will give you more port area. maybe keeping it all inside of the box.
 

Bronze Member
Username: Ducka

Shelby Township, MI United States

Post Number: 40
Registered: Jan-08
wow that other program is much better thank you very much, but is a port that is 2.25 inches wide wide enough?
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