Aeroports can decrease port size by 50%???

[mjf 10+ year member]

http://www.caraudio.com/forum/showthread.php?t=267080
post 6 has the link.

then check out the very last post in that thread.

thankyou

 

[bonesninja 5,000+ posts]

The termlab is the only proof that you need.

and not everyone does SPL either

 

[Mr Cabinetry 10+ year member]

Well, then, someone explain to me what this gomer is getting at:

http://www.realmofexcursion.com/forum/showthread.php?t=37750

I don't understand how a 6 in aero port can have more spl than a slot port with 50 sq.in. area while at the same time reducing vent mach.

 

[PSturmer 10+ year member]

Well, then, someone explain to me what this gomer is getting at:http://www.realmofexcursion.com/forum/showthread.php?t=37750

I don't understand how a 6 in aero port can have more spl than a slot port with 50 sq.in. area while at the same time reducing vent mach.

1. flared ends.

2. maximum port area compared to perimeter.

3. there sexy

 

[IgnoreMe 5,000+ posts]

here is a nice little post i found by "doctorbass" from termpro. this describes a test he did between a regular round port that causes excessive turbelance, and a flared port where the flare, as shown earlier, decreases vent velocity.

Originally posted by Doctorbass:I did some test last night...

Very surprizing!

I measured the difference between aeroport and normal tube without flare...

And got 7 dB diff //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif

I toke account of the tuning frequency.. (i calculate the lenght of each to keep the same frequency) because flared port have virtual lenght longer than a normal tube..

my peak frequency was the same in both tube.. but not dB !!!

Turbulence decrease alot dB on the normal tube!!!

Note that i tried with external port.. the tube output end was not flush to the box, but exterior..

Maybe i will try same test with internal port (flush to the box)... I guess that the diff dB will be less cause the angle at end will be 90 degre and not 180 for the air flow in and out..

Doc

you might have seen this post on ROE...i go by explorer on there. decided to post the response over here as well.

 

[twisztdauthorit 10+ year member]

here is a nice little post i found by "doctorbass" from termpro. this describes a test he did between a regular round port that causes excessive turbelance, and a flared port where the flare, as shown earlier, decreases vent velocity.



you might have seen this post on ROE...i go by explorer on there. decided to post the response over here as well.

7db??? thats quite a gain...

 

[IgnoreMe 5,000+ posts]

7db??? thats quite a gain...

thats what he claims. basically said all he did was change to a flared round port from a regular round port.

kept tuning the same, peaked at the same tone, everything. just a direct drop in supposedly.

 

[IgnoreMe 5,000+ posts]

It's a easy 1-3 db gain from slot to aeroports.
tuan

amen //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

polecat and toxic agree there should be quite a gain as well.

i didnt expect 7dbs out of Doctorbass' setup, but that of course will vary from setup to setup. maybe the round port was too close to the back wall, and when he added a flare, it reduced pressure on the back side of the port and basically "un-choked" it.

 

[bonesninja 5,000+ posts]

Originally Posted by Toxic Tuan

It's a easy 1-3 db gain from slot to aeroports.

tuan

is that swapping sq in for sq in? or is that decrease in port area as well?

 

[iamamp3pimp 5,000+ posts]

slot port = less bracing

 

[IgnoreMe 5,000+ posts]

Originally Posted by Toxic Tuan It's a easy 1-3 db gain from slot to aeroports.

tuan

is that swapping sq in for sq in? or is that decrease in port area as well?

i really dont know, youd probably have to ask him.

imanmp3pimp: hell yea. there are times you can get away with no bracing other than the port walls //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Goldtaz1 10+ year member]

I gained 1.6 Db going from a slot ported enclosure to 2 6" aeroports. I was using roughly 40 square inches of port more on the slot ported enclosure rather than the aeroport enclosure. Same volume and same tuning frequency.

 

[duece212 5,000+ posts]

This is good news, might be able to fit a ported box where I didn't think it would before //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[PSturmer 10+ year member]

i have been testing lately and i dont see any where near 7 db's. complete bs. yes they improve, but not that much. that is saying if you cut your port area in half you lose 7db's. on a daily system i dont see it. even on a spl system thats hard to say. a box with a 4'' port = 145 db's. same box with port plugged and same everything 141 db's. 4 db's with having a port and then no port.

 

[IgnoreMe 5,000+ posts]

i have been testing lately and i dont see any where near 7 db's. complete bs. yes they improve, but not that much. that is saying if you cut your port area in half you lose 7db's. on a daily system i dont see it. even on a spl system thats hard to say. a box with a 4'' port = 145 db's. same box with port plugged and same everything 141 db's. 4 db's with having a port and then no port.

i dont see what he has to gain by making false claims. hes not even selling aero ports, he actually made a DIY tutorial on how to do them at home for yourself.

hes got quite a few accomplishments in the competition field as well. dont know why he would want to taint his, or his teams name with false statements.

i will agree, that is quite a gain, but like i said i have no reason to not believe him. but i also dont expect the same gain for my system either.