What size aeroport should I use and how long of a port

[Johnreid123]

I am building a sub enclosure for a skar EVL 18inch subwoofer. The enclosure dimensions are 38in long, 18inch high, 26inch deep. How should I aeroport this enclosure?

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[BOOMINGRANDPA 5,000+ posts]

@Jeffdachef or @shredder1 maybe able to help u.. even @My63bug just did one for 2 subs in a bug lol..

 

[Popwarhomie 5,000+ posts]

Box is too big. Recommended port area is 55 square inches. Google aero port calculators.

 

[kr15 5,000+ posts]

It actually might not be. Thats 8.5 before displacements.

Skars design recs for this sub are retarded. It needs a large enclosure. After sub and aero displacement it will be well below 8cu. Id use 1 8 or 10" aero

 

[Jeffdachef 5,000+ posts]

It actually might not be. Thats 8.5 before displacements. Skars design recs for this sub are retarded. It needs a large enclosure. After sub and aero displacement it will be well below 8cu. Id use 1 8 or 10" aero

this!!! the evl 18s model well in a 10 cube box. tuned to 31hz. That 4.5 cube manufacturer recommendation is garbage.

I'd do an 8 for low power and a 10 for very high power applications.

 

[Popwarhomie 5,000+ posts]

I figured 4.5 was way too small but 10 cubes? Jesus! I was guessing the average 6 cubes.

Pretty sad the company doesn't even know what size box to put their subs in.

10" (its actually 9") sono tube should work out pretty good. I used two of them with Soundqubed 2 18" wall.

 

[Boomin_tahoe 5,000+ posts]

I figured 4.5 was way too small but 10 cubes? Jesus! I was guessing the average 6 cubes.
Pretty sad the company doesn't even know what size box to put their subs in.

10" (its actually 9") sono tube should work out pretty good. I used two of them with Soundqubed 2 18" wall.

I would have to say someone copied/pasted on their website, w/o realizing it or just didn't care and no one has mentioned it to have them fix it.

 

[My63bug]

audible engineering sells adjustable 8 and 10 inch Aero ports pretty reasonable price

 

[kr15 5,000+ posts]

The evl is under motored imo. And look at the QTS...

No way will it be optimal in a compact box. 4.5 is very small for an 18

 

[Jeffdachef 5,000+ posts]

I figured 4.5 was way too small but 10 cubes? Jesus! I was guessing the average 6 cubes.
Pretty sad the company doesn't even know what size box to put their subs in.

10" (its actually 9") sono tube should work out pretty good. I used two of them with Soundqubed 2 18" wall.

brah its skar audio lmao.

He probably looked at the zv3 and said heeey lets just recommend slightly bigger than that woofer and make our sh*t look like it'll compete with that sh*t.

 

[Popwarhomie 5,000+ posts]

brah its skar audio lmao.
He probably looked at the zv3 and said heeey lets just recommend slightly bigger than that woofer and make our sh*t look like it'll compete with that sh*t.

That is true. Wonder if he still tells people he has a Lamborghini.

 

[THATpurpleKUSH 5,000+ posts]

I can't believe that people still buy Skar after Kevin's super sketchy past.

The evl is under motored imo. And look at the QTS...

I did the math for the motor force.... //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh://content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif:laugh:

 

[kr15 5,000+ posts]

I love the qts.....is it an IB sub?

 

[THATpurpleKUSH 5,000+ posts]

I've seen some Boss Audio subs with more desireable tsp parameters lol

Is it even worth it to use a ported box when qts is that high?

 

[kr15 5,000+ posts]

You can, but the box has to be huge when qts is that high... like someone said, the 18 models to need 10cu. Basically the motor isnt strong enough to compensate for a compact box.

Some locals out here just finished a build with 4 evl 18s walled on 5k. Awaiting to see #s because these guys dont understand ts specs and used skar specs for box. Im fully expecting it to do like 148 only