EXO Needs YOU! 18" Subwoofer Enclosure Design - Ascendant Audio Mayhem

[CaptainzPlanetz]

You would be correct sir, Flared aero ports requre slightly less port area, as they are more efficient. Slot ports however would require 12-16.

[EXOcontralto]

Only custom made Aero ports are harder to tune, the advantage of a custom made port is mainly you get to have a large port area with out running multiple ports, however if you do presicion ports they already have a range of tuning frequencies available, and are changed by extending or retracting the length of the port, the only thing with precision ports is you may have to run multiples to get the proper port area for the size of your box, the general rule of thumb is 12-16 square inches of port per cubic foot of your box.

With that comes the actualy ports - Where could I find correct ports for this application?

No on has yet answered if this way is the "best" way to go.

- Slotted Ports facing rear v.s. Aeroports facing upwards?

[CaptainzPlanetz]

You can get AeroPorts off of Parts Express give me a sec I will get you a link.

Ha even though you posted the link before me I can still Ninja you.

http://www.parts-express.com/pe/showdetl.c...tnumber=268-354

They arent exactly cheap, but they will give you a little DB gain.

[Guest]

With that comes the actualy ports - Where could I find correct ports for this application?

No on has yet answered if this way is the "best" way to go.

- Slotted Ports facing rear v.s. Aeroports facing upwards?

i was stuck on slot's for a long while till i learned how much more efficient aero ports are. you can use less port area for aeros = saved space. but that doesnt really matter for you .

you can buy them at www.partsexpress.com

http://www.parts-express.com/wizards/searc...amp;x=0&y=0

for a random box, lets say 6cuft, you can use three 6" flared ports (gives 14sqin of port area per cuft). tuning the box to 32hz would mean each port would have to be 33.8" long. 38hz would be 23" long.

[EXOcontralto]

i was stuck on slot's for a long while till i learned how much more efficient aero ports are. you can use less port area for aeros = saved space. but that doesnt really matter for you .

you can buy them at www.partsexpress.com

http://www.parts-express.com/wizards/searc...amp;x=0&y=0

for a random box, lets say 6cuft, you can use three 6" flared ports (gives 14sqin of port area per cuft). tuning the box to 32hz would mean each port would have to be 33.8" long. 38hz would be 23" long.

Is all this true even with all this info? Only 6 cubes? - check this out

Subwoofer - Ascendant Mayhem 18

ported enclorsure - 5to8c cf

mouting depth - 10.75in

driver cutout dia. - 16.750

driver overall dia - 18.500

driver displacement - 0.26 cf

Fs - 33.7

Qms - 6.52

Qes - 0.29

Mms - 307g

Sd - 1210cm^2

Vas - 148.9l

SPL - 94.8

Bl - 17.7

Xmax - 30mm one way

RMS - 2500w

Qts - 0.28

With all that, is 6 cubes with what you explained probably the best case scenerio?

[Guest]

Is all this true even with all this info? Only 6 cubes? - check this out

Subwoofer - Ascendant Mayhem 18

ported enclorsure - 5to8c cf

mouting depth - 10.75in

driver cutout dia. - 16.750

driver overall dia - 18.500

driver displacement - 0.26 cf

Fs - 33.7

Qms - 6.52

Qes - 0.29

Mms - 307g

Sd - 1210cm^2

Vas - 148.9l

SPL - 94.8

Bl - 17.7

Xmax - 30mm one way

RMS - 2500w

Qts - 0.28

With all that, is 6 cubes with what you explained probably the best case scenerio?

i just threw a random box size out there but it can work yes. if you choose to bump it up a bit, lets say 7cuft. (i have no experience with that woofer so i dont know what it likes besides what AA gives)

7cuft, 32hz, three 6" aero circle ports, each would be 28.5" long

same with 40hz is 17" long each port.

38hz is 19"

35hz is ~23"

[CaptainzPlanetz]

Actually it might be easier to make a slot port, as the aero ports only can extend to 17" long, so you would have to glue a PVC pipe or something in between in order to the the length you need for the tuning you want.

[DUBIE]

for you brotha sub(s) up port back will get deff loud...

mostly in vehicles like suv's and vans get louder that way..

and for trucks subs up port up..

correct me if im wrong..

and about the slot ports those also get hella loud..

those would also work for you..

im sure pioneer saturn would hook you up with a design..

hit him up and see whats up!..hes the person i go to for box designs!!

[EXOcontralto]

Actually it might be easier to make a slot port, as the aero ports only can extend to 17" long, so you would have to glue a PVC pipe or something in between in order to the the length you need for the tuning you want.

So screw the aeroports? - Slotted port will be just fine? - I need a design!!

[CaptainzPlanetz]

The slot port will work fine, and will be much more cost efficient, however about your design I cant really help you with that, I am decent at designing but I would much rather you get a design from a more so experieced builder than I.