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View Full Version : Help With Aero Ports Please



atlninja82
08-04-2009, 08:51 PM
alright guys. so im pretty pissed right now. finally finished the box, went to go pick up my subs, and got my 4 inch aero ports, carpet , and speaker wire in. well i didnt think the 4 inch aero ports would be 7 1/4 " in diameter so now im having problems with where im going to mount them. so i have a few questions i need answered and id really appreciate it if someone helped me out with this.

1. the psp's site says this "Determine proper speaker & port placement before cutting any holes. The Precision Port™ should be placed at least one port diameter away from any inside walls, if possible. " well i think about the only place i can put it is facing the same way my subs are facing. what does it mean by one port diameter away? how far is that? i have about 2-3 inches away from my seats for the ports. will this sound any different if i had it mounted on top?

2. psp's port calculator says i need 8 inches of port required. does that mean 8 inches of pipe plus the flares or 8 inches from flare end to flare end?

3. what would you do if you were in my situation. please help. i want this in by tomorrow.

thanks guys,
-eric

atlninja82
08-04-2009, 08:52 PM
pic of the box.

http://i165.photobucket.com/albums/u48/atlninja82/IMG_1811.jpg

atlninja82
08-04-2009, 09:04 PM
should i do eight 2 inch aeros? would that take up more airspace than these 2 4 inch ports? the port area on two 4 inch aeros and eight 2 inch aeros are the same.

iamamp3pimp
08-04-2009, 09:09 PM
They have the same surface area but its easier to go with 2 4"s and i dont design based on what PSP says so i dont have a clue what that means.

-Robin

atlninja82
08-04-2009, 09:14 PM
trust me i know itd be easier to go with two 4's considering they are sitting in my room right now but i dont think you read what i said.i cant fit them. they are 7 1/4" wide. the question was can i have them firing into my seat with like 3 inches of clearance? and can how much room should i leave for the port on the inside wall of the box? since it will be at an angle can i just put it up against the back wall?

thanks again

Vermithrax
08-04-2009, 09:18 PM
It'd probably be better if you had a little more clearance (4" at least) between the ports and the seats. If you cant mount them on top or on the side maybe look at putting them on the front face between the seats. You may have to use 90's inside the box to have adequate port clearance inside.

IIRC, each flare gives you 1.5" of port legnth, so the straight pipe would need to be 5" to get 8" total. If you have to use 90's, measure the centerline of the 90 and subtract that from the straight pipe.

atlninja82
08-04-2009, 09:20 PM
It'd probably be better if you had a little more clearance (4" at least) between the ports and the seats. If you cant mount them on top or on the side maybe look at putting them on the front face between the seats. You may have to use 90's inside the box to have adequate port clearance inside.

IIRC, each flare gives you 1.5" of port legnth, so the straight pipe would need to be 5" to get 8" total. If you have to use 90's, measure the centerline of the 90 and subtract that from the straight pipe.

thanks a lot man. that helped out a lot. where can i get the 90's you speak of? and what do you think about if i did 8 two inch aero ports on the top? 4 on on each side and then the two subs in the middle. i think itd be pretty ******.

Vermithrax
08-04-2009, 09:25 PM
I was mistaken. Just checked the PSP site, the flares account for 5", so the straight pipe would need to be 3".

You can get PVC 90's from HD or Lowe's or any hardware store that carries plumbing supplies. You'd be better with the sewer pipe fittings as schedule 40 water line fittings have a bigger I.D. They may not be a tight fit, so you may need to wrap the pipe to increase the O.D. for a snug fitment.

Vermithrax
08-04-2009, 09:29 PM
The 2" aeros would work, they would just have to be a bit longer and are more prone to chuffing. Another option is to use regular 4" PVC thin wall sewer pipe and use a router to put a roundover on the MDF. You can make some port baffles and round them over for the inside. Next best option if you don't want a slot port.

atlninja82
08-04-2009, 09:31 PM
ok thanks a lot for the quick replies. i think im gonna do eight 2 inch aero ports just because that way i will have enough room for the ports to breath and i wont have to ghetto rig anything.


anyone know the diameter of the outside flare of the 2 inch ports? and can i order the parts from psp directly because parts express doesnt have everything i need. or another site that carries them? this is what i need

16- connection rings

8- inside flares

8- outside flare

3- 2x7 plastic tubes

thanks,
-eric

atlninja82
08-04-2009, 09:33 PM
The 2" aeros would work, they would just have to be a bit longer and are more prone to chuffing. Another option is to use regular 4" PVC thin wall sewer pipe and use a router to put a roundover on the MDF. You can make some port baffles and round them over for the inside. Next best option if you don't want a slot port.

thought about it but the box is already glued and screwed all up :(

and why would i be more prone to port noise? its just as much port area as two 4 inch aeros.

Vermithrax
08-04-2009, 09:42 PM
Yeah, I know it's the same port area and you may not have a problem. I've never used multiple ports so I can't speak from experience, just trying to speculate whether the multiple ports side by side would create turbulence between them. IDK for sure.

atlninja82
08-04-2009, 09:44 PM
I was mistaken. Just checked the PSP site, the flares account for 5", so the straight pipe would need to be 3".

wait are you 100% sure about that? if so i may just stick with the 4 inch aeros

atlninja82
08-04-2009, 09:44 PM
Yeah, I know it's the same port area and you may not have a problem. I've never used multiple ports so I can't speak from experience, just trying to speculate whether the multiple ports side by side would create turbulence between them. IDK for sure.

oh ok . gotchya. you know where i could get those parts? or should i just try and call psp?

atlninja82
08-04-2009, 10:21 PM
anyone?

atlninja82
08-05-2009, 12:15 AM
ok ran into another problem guys. **** everything is going not in my favor. haha. ok well an inside and outside port put together is 5 inches long but only 4 inches is usable port and psp's port calc says only like 2 inches for each port or somethin like that. what do i do now?

Vermithrax
08-05-2009, 12:37 AM
Sorry I left you hangin', I was doing some more on an enclosure myself. What is the box size and desired tuning?

atlninja82
08-05-2009, 12:38 AM
ha its cool man. box size is 3 cubes gross and 36-38. anywhere in there.

Vermithrax
08-05-2009, 12:50 AM
I think you may have accidentally entered 30cf instead of 3.0cf. I just ran the numbers on it using 2.15cf net (2.5cf internal volume -.15cf for drivers and -.2cf for port displacement) and for 2 x 4" ports @ 36hz the PSP calculator says 22.38" each.

Do you have the box dimensions handy?

atlninja82
08-05-2009, 12:58 AM
wait a sec. the box should be 2.5 net. sorry i said it wrong. 3.0 is net just without any other displacements. so 2.5 net after displacements. but yea the dimensions are
Height- 16
width-61
top depth-6
bottom depth- 9

and doesnt it mean that its 22.38 between the two?

Nut Hair Trick
08-05-2009, 01:00 AM
FYI, I've seen the 90 degree elbows at parts express.
I ordered the 3" precision ports from PE when I built my enclosure, not thinking. When they got here, the inside flares where too wide and wouldnt fit inside the box in the only viable spot to port. So, I decided that I had to go with a slot port. Good luck figuring this out.

eutechnyx
08-05-2009, 01:03 AM
If u dont use those ports want to sell them?

atlninja82
08-05-2009, 01:03 AM
thanks man. i hope so too. i spent too much **** time on this box to not have this work

atlninja82
08-05-2009, 01:04 AM
If u dont use those ports want to sell them?

yea actually thats what i was gonna try to do

Vermithrax
08-05-2009, 01:07 AM
FYI, I've seen the 90 degree elbows at parts express.
I ordered the 3" precision ports from PE when I built my enclosure, not thinking. When they got here, the inside flares where too wide and wouldnt fit inside the box in the only viable spot to port. So, I decided that I had to go with a slot port. Good luck figuring this out.

The only 90's at PE I've seen are made by Dayton. I was told by PE that they aren't compatible with the PSP tubes.

I'm 99% sure that the legnth is for each port. To be sure, I ran the numbers for a single sub. 1.25cf @ 36hz. with one 4" port returned 18.98". Then I used 2.5cf @ 36hz. with two 4" ports and it returned 18.98".

tommyk90
08-05-2009, 01:11 AM
wait a sec. the box should be 2.5 net. sorry i said it wrong. 3.0 is net just without any other displacements. so 2.5 net after displacements. but yea the dimensions are
Height- 16
width-61
top depth-6
bottom depth- 9

and doesnt it mean that its 22.38 between the two?

NO, that is the length for EACH port.

Nut Hair Trick
08-05-2009, 01:14 AM
The only 90's at PE I've seen are made by Dayton. I was told by PE that they aren't compatible with the PSP tubes.

I'm 99% sure that the legnth is for each port. To be sure, I ran the numbers for a single sub. 1.25cf @ 36hz. with one 4" port returned 18.98". Then I used 2.5cf @ 36hz. with two 4" ports and it returned 18.98".
Oh my bad, I just saw them listed on the side of the page and figured if they had a 90s, then they would have them for all or most of the ports.

Vermithrax
08-05-2009, 01:15 AM
Oh my bad, I just saw them listed on the side of the page and figured if they had a 90s, then they would have them for all or most of the ports.

Yeah, so did I, but I always like to ask before spending the money.

atlninja82
08-05-2009, 01:23 AM
The only 90's at PE I've seen are made by Dayton. I was told by PE that they aren't compatible with the PSP tubes.

I'm 99% sure that the legnth is for each port. To be sure, I ran the numbers for a single sub. 1.25cf @ 36hz. with one 4" port returned 18.98". Then I used 2.5cf @ 36hz. with two 4" ports and it returned 18.98".

****... so what should i do

eutechnyx
08-05-2009, 01:27 AM
PM me with a reasonable price shipped to 32808 :)

atlninja82
08-05-2009, 01:28 AM
if i dont end up using them i will

atlninja82
08-05-2009, 01:30 AM
if i can find some 90's compatible with psp tubes then i might be able to get this to work

Vermithrax
08-05-2009, 01:33 AM
Well, you could put the ports towards the bottom of the box, use 2-90's and turn the pipes towards either side, then 2 more 90's and turn the inside flares up. Measure the centerlines of the 90's, subtract to get the straight pipe length.

Either that or cut the bottom of the box out and put in a 7.5 x 3" side-firing slot port. You'd have to model the enclosure in WinISD or other to get the port length.

atlninja82
08-05-2009, 01:38 AM
Well, you could put the ports towards the bottom of the box, use 2-90's and turn the pipes towards either side, then 2 more 90's and turn the inside flares up. Measure the centerlines of the 90's, subtract to get the straight pipe length.

thats what i was thinkin. what do you mean by centerlines to get straight pipe length? where should i get those 90's?

Vermithrax
08-05-2009, 01:44 AM
I was mistaken. Just checked the PSP site, the flares account for 5", so the straight pipe would need to be 3".

You can get PVC 90's from HD or Lowe's or any hardware store that carries plumbing supplies. You'd be better with the sewer pipe fittings as schedule 40 water line fittings have a bigger I.D. They may not be a tight fit, so you may need to wrap the pipe to increase the O.D. for a snug fitment.

^^^ Here.

By centerline I mean hold the 90 so that you looking at it like an L. There's usually a seam where it was molded. Measure along that seam and you'll get the centerline distance of the 90. Don't include the part of the 90 that the pipe will fit into or you'll end up measuring too long.

atlninja82
08-05-2009, 01:47 AM
gotchya. so get the 90's at home depot?

Vermithrax
08-05-2009, 01:56 AM
Yep, the sewer line fittings should be on the same aisle but in a separate section from the schedule 40 water line fittings.