Check my box math!

[Chevyaudio 5,000+ posts]

Ok, so worked all the math out on paper, had the box right where I wanted it, right around 5 cubes @ 36hz...So I was just messing around on the internet, and saw this RE calculator, and either that thing is crazy, or my math is off. So can someone check my math...

Box is 55x16x16

That gives a gross volume around= 6.509

Port is 14.5x5x25

That gives a port area around 72.5

Displacements are=1.586 (port and subwoofer)

Net volume is 4.92

Net VB=4.9

Port Area=72.5

Port Length=25

Port has no bends in it...so its straight all the way down the box

I get 35.2hz

anyone else get anything different?

Thanks

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[Chevyaudio 5,000+ posts]

going to sleep bump

 

[Reborn 10+ year member]

I turned out to be off by a few hundredths, but no big deal. Your calculations look fine to me. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[killa101 10+ year member]

I got pretty much the same thing. The only difference I had was a 36.1Hz tuning frequency but that is a very small difference. It looks like all your calculations are right.

I was assumming you used 3/4" material for the calculations.

 

[Chevyaudio 5,000+ posts]

Thanks for the help, I knew I wasnt crazy