Welcome to the IHoP

[Mac N Cheese 90]

I have always wanted to see a goalie accidently pass the puck to the other team from behind the net, it happened today..

[Mac N Cheese 90]

it's not like there is a secret to it...

Oh there are secrets

let me in man

You must discover them yourself young one

don't worry master, i will discover the path and set forth for it

[Mac N Cheese 90]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

[Duran 387]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

Good god did they pour liquid gold in there?!

[Mac N Cheese 90]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

Good god did they pour liquid gold in there?!

pretty much....ended up using around seven bottles of motor oil

[Tirefryr 1,742]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

Good god did they pour liquid gold in there?!

pretty much....ended up using around seven bottles of motor oil

That seems cheap for a dealerhip or shop.

[///M5 2,833]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

$4 for the filter and ~$30 for synthetic oil

[Mac N Cheese 90]

oil change=90 bucks for my brothers BMW, Sean how much does your M5 cost?

$4 for the filter and ~$30 for synthetic oil

you do it yourself

[Penguin4x4 1,761]

~10 for the filter and ~55 for oil for the E55

[Duran 387]

Guys...I'm working on the port size for an enclosure, I'm using these formulas : Sd = pi*(Dia/100)^2/4

Vd = Sd*Xmax/1000

Dmin = 100*(20.3*(Vd^2/Fb)^0.25)/Np^.5

And I came up with 264.9 in. That doesn't seem right at all

[Duran 387]

Math kickin' my ass top

[NB50 206]

Guys...I'm working on the port size for an enclosure, I'm using these formulas : Sd = pi*(Dia/100)^2/4

Vd = Sd*Xmax/1000

Dmin = 100*(20.3*(Vd^2/Fb)^0.25)/Np^.5

And I came up with 264.9 in. That doesn't seem right at all

dv = min vent dia in inches

fb = tuning freq

vd = cone displacement in cubic meters

dv >= 39.37*(411.25*Vd / sqrt Fb) ^(1/2)

Or

dv >= 39.37* (fb*Vd) ^(1/2)

[Penguin4x4 1,761]

[Duran 387]

Guys...I'm working on the port size for an enclosure, I'm using these formulas : Sd = pi*(Dia/100)^2/4

Vd = Sd*Xmax/1000

Dmin = 100*(20.3*(Vd^2/Fb)^0.25)/Np^.5

And I came up with 264.9 in. That doesn't seem right at all

dv = min vent dia in inches

fb = tuning freq

vd = cone displacement in cubic meters

dv >= 39.37*(411.25*Vd / sqrt Fb) ^(1/2)

Or

dv >= 39.37* (fb*Vd) ^(1/2)

So was I using the wrong formula?

[NB50 206]

Guys...I'm working on the port size for an enclosure, I'm using these formulas : Sd = pi*(Dia/100)^2/4

Vd = Sd*Xmax/1000

Dmin = 100*(20.3*(Vd^2/Fb)^0.25)/Np^.5

And I came up with 264.9 in. That doesn't seem right at all

dv = min vent dia in inches

fb = tuning freq

vd = cone displacement in cubic meters

dv >= 39.37*(411.25*Vd / sqrt Fb) ^(1/2)

Or

dv >= 39.37* (fb*Vd) ^(1/2)

So was I using the wrong formula?

I guess, where did you get it from?

[Duran 387]

I guess, where did you get it from?

The Subwoofer DIY Page - Port Calculations

[Tirefryr 1,742]

Why the fuck is the trash truck coming along at 1:15 in the morning?

[NB50 206]

I guess, where did you get it from?

The Subwoofer DIY Page - Port Calculations

huh, the ones I wrote are from the Loudspeaker Design Cookbook.

[Duran 387]

I guess, where did you get it from?

The Subwoofer DIY Page - Port Calculations

huh, the ones I wrote are from the Loudspeaker Design Cookbook.

Thanks bromo I'll try those formulas.

Hey I tried to play with Excel and make it calculate using those formulas but I couldn't get it to work at all, any tips?

[Duran 387]

Well bromo I got 559.2 in with your formula, I'll do back and redo the Sd and Vd.

[Adrian_D 520]

I guess, where did you get it from?

The Subwoofer DIY Page - Port Calculations

huh, the ones I wrote are from the Loudspeaker Design Cookbook.

Thanks bromo I'll try those formulas.

Hey I tried to play with Excel and make it calculate using those formulas but I couldn't get it to work at all, any tips?

Make sure you write them right in Excel and have an example for checking.

[Duran 387]

I guess, where did you get it from?

The Subwoofer DIY Page - Port Calculations

huh, the ones I wrote are from the Loudspeaker Design Cookbook.

Thanks bromo I'll try those formulas.

Hey I tried to play with Excel and make it calculate using those formulas but I couldn't get it to work at all, any tips?

Make sure you write them right in Excel and have an example for checking.

I wrote them right, but it would be easier to see it done, I don't have any examples.

[Duran 387]

Okay I redid my Sd and Vd and came up with 52.7 in, that sounds much better Thanks bromo!

[Duran 387]

bromo with your formula is that for a round port or slot port? If it was for a round the conversion to a slot is Dv' = 2*((W*H)/pi)^0.5 right?

[Duran 387]

Damn...it's a lonely night!