box calculations

[Mr. Opportunist 10+ year member]

just wanted to know if these were right if not its back to the drawing board....

12" H x 32" W x 25" D(external demensions) port length of 12.65" for 38hz is that correct?

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[mobileaudio219 10+ year member]

What type of port are you using? Demension of port (width - height)? Thickness of wood? Any bracing?

 

[Mr. Opportunist 10+ year member]

What type of port are you using? Demension of port (width - height)? Thickness of wood? Any bracing?

23.5"H x 4" W, 3/4" mdf, no bracing decisions yet.

 

[Mr. Opportunist 10+ year member]

anyone? i just want to know if i calculated port length correct.

 

[psych0ticnemes1 5,000+ posts]

whtas the woofer

displacement?

 

[Mr. Opportunist 10+ year member]

displacement is .071 cu ft

 

[TrlcKed_OuT 10+ year member]

thats not what i calculate but i could be wrong

 

[SPL140.2 5,000+ posts]

how many subs??

 

[Mr. Opportunist 10+ year member]

two subs

 

[SPL140.2 5,000+ posts]

just wanted to know if these were right if not its back to the drawing board....12" H x 32" W x 25" D(external demensions) port length of 12.65" for 38hz is that correct?

The dimensions you gave for this enclosure and port it is tuned to 56.3hz.

 

[Mr. Opportunist 10+ year member]

def. back to the drawing board then //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif thanks

 

[Mr. Opportunist 10+ year member]

ok did some recalculating, i came up with 16.5 port length for a port 10.5x4 box dimensions 12x32x25 with the same drivers does that sound about right? this time i used the formulas in the sticky hopefully it worked out.

 

[TrlcKed_OuT 10+ year member]

bbp says about 10.81in but im not sure how i trust must of these programs cus they give me different numbers alot... but im too lazy to even try to figure it out...

 

[SPL140.2 5,000+ posts]

ok did some recalculating, i came up with 16.5 port length for a port 10.5x4 box dimensions 12x32x25 with the same drivers does that sound about right? this time i used the formulas in the sticky hopefully it worked out.

that would be tuned to 35.3hz //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Mr. Opportunist 10+ year member]

ah very close now lol thanks alot //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif