two 8" AERO's or one 12" AERO????

[dcole18]

as the titile states... im trying to port two 15" 3hp's in the trunk of a 1995 caddilac seville, the trunk is like a **** tank and im trying to figure out a way to get sound into the cabin... i think ive decide to port through the rear deck

ive been thinking i can do

two 8" aero's = 100in of port area and 31" long (34hz)

or

a single 12" aero = 113.5" of port area and 33" long (34hz)


any opinions?

[groundpound4200]

where are you getting 8" and 12" aeros? I would do the 12" personally...

[dcole18]

where are you getting 8" and 12" aeros? I would do the 12" personally...

i would make them... i gots teh Glazzin skilz :p:

[CRXBMPN]

i have 10" pvc pipe here, we did a birch box with four L7 12's and the 10" port :) pix anyone?

[dcole18]

i have 10" pvc pipe here, we did a birch box with four L7 12's and the 10" port :) pix anyone?

lets see it... but i would have a flared aero

[Andrizzle]

dcole. any pics of aeros you've made before?

[dcole18]

dcole. any pics of aeros you've made before?

never made anything bigger than 6"... but its a pretty straight foward process

[Andrizzle]

I wanna see a 12" aero :[

[dcole18]

I wanna see a 12" aero :[

depending on the outcome of this thread you just might ;)

[dcole18]

what if i went with the 12" from the deck down into the box and split the 12" into two 8"s inside the box making a T shape...


say the 12" is 16" long before the split and each 8" is 16" long heading towards the sides of the box


there is a 13" port area difference between the two 8"s and a single 12"... how much would this affect tuning?

[AudioXtremes]

what if i went with the 12" from the deck down into the box and split the 12" into two 8"s inside the box making a T shape...


say the 12" is 16" long before the split and each 8" is 16" long heading towards the sides of the box


there is a 13" port area difference between the two 8"s and a single 12"... how much would this affect tuning?

NO!

Just do a single 12". The lower the number of ports the better. Plus more square inches than 2 8".


BTW if you need flares bigger than 6" this is the place to go.
http://www.spiralfittings.net/standard%20bellmouth.htm

[Zeuslicious]

^^^Just like he said, I have a single 11" Aero and works perpect in my daily box. I'll try it in the comp box too.

[BrianChia]

what about 2 12" aeros?

[twisztdauthorit]

im in the process of making an 8" aero also..
what method are you using?

[dcole18]

what about 2 12" aeros?

thats a shitload of port area and each one would have to be 73" long for 34hz tuning :(

[dcole18]

^^^Just like he said, I have a single 11" Aero and works perpect in my daily box. I'll try it in the comp box too.

so your running a single 11" on those two 15" 4hps?

do i need a 12" then?

[MikeyB]

Do the 12 and get pics. I would looovvveee to see how to make one :)

I almost attempted but then decided to give up

[dcole18]

Do the 12 and get pics. I would looovvveee to see how to make one :)

I almost attempted but then decided to give up

i make a form out of staggered circles of mdf/bondo and then use that to make the flair out of glass... ive seen your worklogs, this would be a cakewalk for you


buuut go look at the link posted in here with the flared ends... i think i might just buy some of those

[snfsh79077]

a guy on here has two ssx 15s with a 12" aero

[dcole18]

a guy on here has two ssx 15s with a 12" aero

who?

[MikeyB]

i make a form out of staggered circles of mdf/bondo and then use that to make the flair out of glass... ive seen your worklogs, this would be a cakewalk for you


buuut go look at the link posted in here with the flared ends... i think i might just buy some of those

Yeah Ive seen some tutorials on it, I ended up ditchin the whole round port idea as I would need a bend in it :(

However, Im lovin the rectangular flared ends from that link. I might have to order two. Would work out perfect for my port setup and I was gonna make it out of mdf :eek:

Anyone have any idea on the pricing of those? Couldnt imagine its too bad since its just duct work tubing.....

[Unholysavage]

Acoupower also makes big aeroports for home theater.
IIRC, they have 7" and 10" aluminum aeroports, but they aren't cheap (~$130 each).

[snfsh79077]

his name on here is GnFnRs

[Mitch86]

Hm, never saw a 12" aero...I was thinking of using 8" quick-krete tubes and making a fiberglass flare for my next build...maybe I'll do a 12" though. :D My vote goes to 12"..just cause I wanna see how it turns out.

[snfsh79077]

do it big and go 12"

[bluelceii]

Do the 12 and get pics. I would looovvveee to see how to make one :)

x2... I vote they add a "how-to" for stuff like this...

[twisztdauthorit]

anyone have a link to the tutorials?
cant seem to find em. i used a large styrophoam block and carved it out.. came out alright but a little lopsided

[AudioXtremes]

Those metal flares are less than 40 a pair.

[MikeyB]

anyone have a link to the tutorials?
cant seem to find em. i used a large styrophoam block and carved it out.. came out alright but a little lopsided

I can find it when I get home tonight, off to school and work though :(

[Wkbdkid]

I made a thread on how to make flared aeros. BrianChia posted a pretty koo link. Im gonna try this within the next couple of weeks.

Check this out:

http://www.subwoofer-builder.com/port-flares/Flare36mm.jpg

http://www.subwoofer-builder.com/flares-25mm.htm

[Wkbdkid]

NO!

Just do a single 12". The lower the number of ports the better. Plus more square inches than 2 8".


BTW if you need flares bigger than 6" this is the place to go.
http://www.spiralfittings.net/standard%20bellmouth.htm
I jus sent them an email on how much pricing a 6" bellmouth would be, but would you happen to know how much 1 of them cost?

[CRXBMPN]

http://i48.photobucket.com/albums/f242/crxbmpn/100_1452.jpg

http://i48.photobucket.com/albums/f242/crxbmpn/100_1453.jpg

and this is the same port in another vehicle

my buddy built it so its sloppy as all ****

http://i48.photobucket.com/albums/f242/crxbmpn/101_0605.jpg

http://i48.photobucket.com/albums/f242/crxbmpn/headport.jpg

[Kenneth10483]

what kind of numbers the 4 L7s did with that port?

[CRXBMPN]

we dont know yet, my buddy blew his MA 4000D before we metered it and I had to pull out the JBL he was using to send to DB_DRAG_SPL for my new Wii :) so now I have two PA A3000D's coming for him. He is going to go to the show this saturday in Mass I think, so I'll know then.

[WOT]

how big is that freaking port? where would you get something that big? Thats perfect for my setup, I gonna port 4 15's in 14 cubes, need about 240sq/in of port and only have about 20" depth to give up......

[JBLCAMRY]

http://i228.photobucket.com/albums/ee174/kirbycamry/000_0009-1.jpg

[WOT]

That box is a beast, complete double baffle...... wow

Where do you get such a huge port? I dont have ALOT of depth to give up, maybe 20" tops, and I need alot of sq /in of port to let 4 15's breathe....

[dcole18]

lol... i cant belive this thread got brought back to life

[delvryboy]

you need to flare that focker

[JBLCAMRY]

you need to flare that focker

me?

[Hintzyboy]

That box is a beast, complete double baffle...... wow

Where do you get such a huge port? I dont have ALOT of depth to give up, maybe 20" tops, and I need alot of sq /in of port to let 4 15's breathe....

If you only have 20" of depth, you won't be able to run that big of a port. The larger the port, the longer it has to be to get the same tuning

[twisztdauthorit]

me?

Im quite surprised that it wasnt flared, especially with that double baffle. Just get a nice large roundover bit, im sure even that would help.

[JBLCAMRY]

Im quite surprised that it wasnt flared, especially with that double baffle. Just get a nice large roundover bit, im sure even that would help.

i did. i just did not take pictures of the finished enclosure.

i will early next week.:D

it is accualy tripple baffle just for that reason.

http://i228.photobucket.com/albums/ee174/kirbycamry/000_0007-1.jpg

[twisztdauthorit]

i did. i just did not take pictures of the finished enclosure.

i will early next week.:D

it is accualy tripple baffle just for that reason.

http://i228.photobucket.com/albums/ee174/kirbycamry/000_0007-1.jpg


ok now where did you get pvc that big? or would one of those round concrete forms work too?

[gotparts90]

model rocket builders use cardboard as an inner form then after the carbon fiber sets up the cardboard it soaked in water and peeled out. I think the same technique would work nice for custom ports. I might try it out.

[WOT]

If you only have 20" of depth, you won't be able to run that big of a port. The larger the port, the longer it has to be to get the same tuning

So what port would I need if I only had 20" or less? Ive got a 37" wide box, so I can fit a few PVC ports side by side as my port. Probably can get ahold of some 6" PVC easily, will this make for shorter ports? Im gonna need alotta sp/in of port though..... dont know how that calculated with a round port..

[twisztdauthorit]

yes but buying a cement form(made out of thick paper) sounds so much easier.. I think it would bond well with wood glue too being that they are made out of the same resource.???

[mazdakid]

go to construction sites. thats where i got my 12" pvc

[JBLCAMRY]

ok now where did you get pvc that big? or would one of those round concrete forms work too?

side of the road. :up2somet:





















but i think they sell it at the local Plumbing supply store.