Audioque and RE box calculator QUESTIONS

[Bass911 10+ year member]

you dont have tocalculate for where the port is just the port itself. posistion is pretty irrelevant.
bromo learn math or gtfo i do boxes for a living as well as alot of other shit and re calc is wrong period.

It will change the internal volume if I move the port to the middle instead of just keeping it on the left or right side? Something has to be adjusted because you're using 2 pieces of wood for the port instead of 1 piece?

 

[fasfocus00 5,000+ posts]

It will change the internal volume if I move the port to the middle instead of just keeping it on the left or right side? Something has to be adjusted because you're using 2 pieces of wood for the port instead of 1 piece?

the actual port volume does not change and the displacement of a 3/4" piece of mdf that is 16.5" long is not significant enough to change your tuning freq by more than 1hz.

 

[Bass911 10+ year member]

the actual port volume does not change and the displacement of a 3/4" piece of mdf that is 16.5" long is not significant enough to change your tuning freq by more than 1hz.

Are you telling me to move it to the middle by just throwing another piece mdf 16.5x16 and leaving the width the same?

 

[SicAudio 5,000+ posts]

^^^

Exactly

and no bromo i did not do the math because i have more than 20 times already for other posts similar to this. even times to know that it is off on anything but RE subs.

 

[fasfocus00 5,000+ posts]

Are you telling me to move it to the middle by just throwing another piece mdf 16.5x16 and leaving the width the same?

if you keep the port the same size with the same dimensions than yes that is exactly what I'm telling you. how else could this be accomplished?

 

[SicAudio 5,000+ posts]

Are you telling me to move it to the middle by just throwing another piece mdf 16.5x16 and leaving the width the same?

it is only .114cf for that 16.5x16x .75 port piece

 

[NB50 10+ year member]

What you guys are forgetting to do is account for the corner of the box as it becomes part of the port. Why don't you tell me the volume of this pic it is his dimensions all you have to do is multiply the area by internal height and you have internal volume.

924 X 16.5 = 15246

15246 / 1728 = 8.822916667

 

[Bass911 10+ year member]

if you keep the port the same size with the same dimensions than yes that is exactly what I'm telling you. how else could this be accomplished?

I know how to do it, but didn't know how much it would throw the tuning off? Aq says it will be at 40hz, but I'd rather it be 35hz. Adding that mdf will probably make it 41hz?

 

[fasfocus00 5,000+ posts]

What you guys are forgetting to do is account for the corner of the box as it becomes part of the port. Why don't you tell me the volume of this pic it is his dimensions all you have to do is multiply the area by internal height and you have internal volume.

924 X 16.5 = 15246

15246 / 1728 = 8.822916667

you just proved to the world that you don't know what you're talking about. so you telling me and this forum that the space behind the port is considered part of the port and should not be taken into account for the box's internal volume?

 

[SicAudio 5,000+ posts]

you account for the port after gross volume. vb of a box is after port and subs not before. so i didnt "forget" anything at all and i think fasfocus already said the measurement dimensions, i didnt verify it because I know he has been around long enough to do the simpl math required. if you want me to really do that i would be happy to

 

[fasfocus00 5,000+ posts]

I know how to do it, but didn't know how much it would throw the tuning off? Aq says it will be at 40hz, but I'd rather it be 35hz. Adding that mdf will probably make it 41hz?

okay, so we can get this thread finished. your max dimension are 18" tall, 49" width, 25.5" depth and you want to tuning around 38-40hz. where do you want your subs and port placed?

 

[Bass911 10+ year member]

What you guys are forgetting to do is account for the corner of the box as it becomes part of the port. Why don't you tell me the volume of this pic it is his dimensions all you have to do is multiply the area by internal height and you have internal volume.

924 X 16.5 = 15246

15246 / 1728 = 8.822916667

You might as well finish what you started and visually move it to the middle for me?//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[SicAudio 5,000+ posts]

I facepalmed and peed my pants i laughed so hard at Bromo and his "NEW IMPROVED BOX MATH" lulz.

 

[Bass911 10+ year member]

okay, so we can get this thread finished. your max dimension are 18" tall, 49" width, 25.5" depth and you want to tuning around 38-40hz. where do you want your subs and port placed?

Subs and port back, common chamber with port in the middle because it will help brace the box little better with the port in the middle.

 

[fasfocus00 5,000+ posts]

Subs and port back, common chamber with port in the middle because it will help brace the box little better with the port in the middle.

what subs you running?