splescort

11-20-2011, 10:19 PM

how do you go about to figure out port velocity?

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splescort

11-20-2011, 10:19 PM

how do you go about to figure out port velocity?

Moble Enclosurs

11-21-2011, 03:55 AM

In all honesty: v=w*x*a1/a2*(w^2/wport^2-1). Then mach=v/c, where c=wavelength*frequency or 344.41m/s. To be honest, it gets much more complicated. :) where w=p/4/Pi/rad^2 and wport=sqrt(kport/m2 where kport=(1.4*a2^2*patm)/vbox where patm=101.3e3*Pa(pascals). Etc,etc,etc. Not something to explain in a text or two.

brodeisel

11-21-2011, 03:56 AM

You know i would be able to under stand this if you told me what each varible ment.

Moble Enclosurs

11-21-2011, 04:00 AM

That is the key right there. :) it can be simplified once it is understood. Any formula can be taught, just takes time and effort and more importantly, understanding. And that usually comes at a cost now days, lol.

brodeisel

11-21-2011, 04:02 AM

yeah it does. Shoot i think i could figure out some of the variables but not all of them.

brodeisel

11-21-2011, 04:21 AM

but math can be so much fun

Moble Enclosurs

11-21-2011, 04:51 AM

WTF is port velocity?

You nerds need to put down the pocket protectors and slide rules and put some sawdust on the floor.

Haha nice. :)

You nerds need to put down the pocket protectors and slide rules and put some sawdust on the floor.

Haha nice. :)

Moble Enclosurs

11-21-2011, 05:09 AM

WTF is port velocity?

You nerds need to put down the pocket protectors and slide rules and put some sawdust on the floor.

I can't send you a PM now...says its full. :( my email is mobileenclosures@gmail if you wanna talk about what we were talking about.

As to the OP, I wish I could be more help to you right now, but the best I can tell you, is if you figure for it, the m/s limit is about 25-30 at lowest impedance of the design. That's all I can say about it as it is very complex to understand fully.

You nerds need to put down the pocket protectors and slide rules and put some sawdust on the floor.

I can't send you a PM now...says its full. :( my email is mobileenclosures@gmail if you wanna talk about what we were talking about.

As to the OP, I wish I could be more help to you right now, but the best I can tell you, is if you figure for it, the m/s limit is about 25-30 at lowest impedance of the design. That's all I can say about it as it is very complex to understand fully.

kushy_dreams

11-21-2011, 12:08 PM

Easiest way- download win isd, play around with different boxes and woofers, on the vents tab it will display port mach aka port velocity.

sacsking916

11-22-2011, 03:13 PM

I can't send you a PM now...says its full. :( my email is mobileenclosures@gmail if you wanna talk about what we were talking about.

As to the OP, I wish I could be more help to you right now, but the best I can tell you, is if you figure for it, the m/s limit is about 25-30 at lowest impedance of the design. That's all I can say about it as it is very complex to understand fully.

im going to be sending you an email just to get a little more knowledge about it if thats ok with you?

As to the OP, I wish I could be more help to you right now, but the best I can tell you, is if you figure for it, the m/s limit is about 25-30 at lowest impedance of the design. That's all I can say about it as it is very complex to understand fully.

im going to be sending you an email just to get a little more knowledge about it if thats ok with you?