Port sealed double 15" subs

[XxAndreaxX]

love the car but dude that box no...

bro, its impossible to fit anything in that car. that was the only option, in front of the passenger seat.

 

[XxAndreaxX]

Nice... a non answer

if you mean the sub, its an 8" sundown X8 750RMS

 

[tymoto21 10+ year member]

That enclosure is very small for that X8

You should put a X6.5 and see if it’s louder that is right about the correct size for a 6.5”

 

[shredder2]

if you mean the sub, its an 8" sundown X8 750RMS

What's the port diameter?.. in inches... lol

 

[BOOMINGRANDPA 5,000+ posts]

looks like 2" port

 

[shredder2]

So a .35ft3 enclosure without displacements? A 2" round on a high excursion driver (Sa-X8)?... it whistled at high volume... wonder why?

Sounded good though OP...

?

 

[XxAndreaxX]

So a .35ft3 enclosure without displacements? A 2" round on a high excursion driver (Sa-X8)?... it whistled at high volume... wonder why?
Sounded good though OP...

?

yeah the port is around 2". it was a first test, i could have done a bigger port, but the lenght would have been a nightmare.

I'll try to fit a second port, anyways, I prefer a Little bit of whistle, than a flat sound like when its sealed.

question, is there any difference between a round and a square port???

ah, and how do I calculate the volume of a square irregular box like mine??? thanks!!

 

[tymoto21 10+ year member]

You can use packing peanuts and stuff then in the box

Then take them out and put them in a square box and measure how much area they take up

 

[XxAndreaxX]

You can use packing peanuts and stuff then in the boxThen take them out and put them in a square box and measure how much area they take up

hey, i did find a simple form.

I measure the base 3d square and get V1 (Volume 1)

I measure the top 3d square and get a smaller V2

I calculate the bigger V1-V2 and I get the V3.

then I divide V3/2 and get the difference volume V4

I take V1-V4 and get my desired V5

 

[XxAndreaxX]

Hi all, just calculated the internal volume, its 71L, just good for 1 of these to port.

how should look the port like???

thanks!

 

[XxAndreaxX]

the calculator reports for 2,50ft3 that I need for a 5inch diameter port, 20inch lenght tuned at 30hz

is that correct?

 

[Buck 5,000+ posts]

If you work with me I will get you sounding good. You'll need to throw all that **** away though.

 

---------- Post added at 10:11 AM ---------- Previous post was at 10:10 AM ----------

 

You need to do like a single 12 or something ported. single 12 ported in a PROPER box will be louder than you probably think.

 

[XxAndreaxX]

If you work with me I will get you sounding good. You'll need to throw all that **** away though. 

---------- Post added at 10:11 AM ---------- Previous post was at 10:10 AM ----------

 

You need to do like a single 12 or something ported. single 12 ported in a PROPER box will be louder than you probably think.

bro, i have limited possibilities. If I had unlimited space, it would be different.

I don't think 1 198$ 12" ported in a sealed 2.5ft3 box would sound louder than 2 15" sealed.

now I have to do the best with what I have.

i'll try to fit a 5.5" port with the right lenght. i'll also try to seal the best as posible the gap between seats and enclosure to minimize cancelation.

the end result will look like some kind of 4th order, using the rest of the trunk as a sealed enclosure

 

[kcr357 10+ year member]

Everyone stop being a **** to the op and tell him how to get loud with 2 12's in a .25cu ft sealed box already

 

[Buck 5,000+ posts]

bro, i have limited possibilities. If I had unlimited space, it would be different.I don't think 1 198$ 12" ported in a sealed 2.5ft3 box would sound louder than 2 15" sealed.

now I have to do the best with what I have.

i'll try to fit a 5.5" port with the right lenght. i'll also try to seal the best as posible the gap between seats and enclosure to minimize cancelation.

the end result will look like some kind of 4th order, using the rest of the trunk as a sealed enclosure

Want to bet? You audio knowledge is not that great. No offense, but truth is truth. I've had one 1200 10 that s h i t t e d on people's 2 15's because people don't know what they are doing. I was 17 pissing people off with my boxes. Now I'm 26, I know A LOT more.

 

---------- Post added at 11:47 AM ---------- Previous post was at 11:47 AM ----------

 

OP check this out, I'm not trying to be a d i c k, I'm trying to help as are many other members:

https://www.facebook.com/groups/606969149465644/

 

---------- Post added at 11:47 AM ---------- Previous post was at 11:47 AM ----------

 

If you think I don't know what I'm talking about.