need box spec help

[rosrock 10+ year member]

i need someone to help find the cubic feet and what itts tuned to. This is a dual 12 box but ill just give the one side. Its a aero port or flare what ever you call it. pics to explain it more

bottom depth 15.75", top depth 12.75", height 12", width 14.25", port length 12.25", port diameter 3.7/8", port white material "thickness" 1/8. 3/4 mdf. and these are all inside dimensions

View attachment 26518191

View attachment 26518192

Click to read more...

 

[thehardknoxlife 10+ year member]

What is 3.7/8?

If it's a 4" port, it's 1.3@41hz give or take. if it's 3" it's closer to 30hz. I assume it's 3/4" thick and a dual chamber box.

 

[rosrock 10+ year member]

what do ya mean what is 3.7/8? 7/8 of an inch... so its 3 inches + 7/8's of an inch aka 3.7/8"

 

[misfit138 5,000+ posts]

What is 3.7/8?
If it's a 4" port, it's 1.3@41hz give or take. if it's 3" it's closer to 30hz. I assume it's 3/4" thick and a dual chamber box.

I came up with .99 and gave up because I **** at this. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[thehardknoxlife 10+ year member]

I came up with .99 and gave up because I **** at this. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

It'd be close to that if the dimensions were external, but that couldn't be right....could it?

 

[rosrock 10+ year member]

could i please get someone who knows what they are doing, and will be exact with the tunage and cu ft

 

[thehardknoxlife 10+ year member]

Umm, I done it for you. That is if the dimensions you listed are internal. If they aren't then the box need to be tossed out because no 12" is going to perform worth a crap in it unless you seal it. Even if the measurements are internal its is a small space for most 12's ported.

 

[misfit138 5,000+ posts]

It'd be close to that if the dimensions were external, but that couldn't be right....could it?

I assumed his measurements were external, man. It wouldn't be the first time someone used an enclosure that's WAY too small, right? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[AudioDave]

could i please get someone who knows what they are doing, and will be exact with the tunage and cu ft

Well it isn't misfit lol..

Heres some links to help you...

RE Enclosure Calculator

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators