Old Box.. How do I find out what it's tuned at?

[juukno 10+ year member]

I have been using this sealed box for my 2 eho152's and i am beginning to wonder if it is out of tune due to the recent problems i have been having. i calculated that the box is 3.8 cu feet each seperated (7.6 cu combined) not calculating in driver displacement.

How do I find out what it's tuned to? And, is this box too bog/small for these subs? It seems like they are bottoming out at 60-75%.

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[Toone 10+ year member]

You cant tune a sealed box //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[jdawg 5,000+ posts]

sealed boxes dont have a tune

 

[marcotheclepto 10+ year member]

... sealed boxes dont get tuned, by sealed you mean no port(hole) in it?

 

[PatFitz9 10+ year member]

I calculated it out, it's a bit high at 43.6 hz.

 

[gotparts90 10+ year member]

If you think it is to big make some little sealed boxes to put inside them. Even some boards just to take up some airspace.

 

[juukno 10+ year member]

haha didn't know about that.. would this cause them to bottom out and crack spiders/dust caps though??

 

[skmfkr 5,000+ posts]

yeah if they are 3.8net sealed thats pretty big for a 15.

 

[ThatChevyGuy 5,000+ posts]

Sealed boxes CAN be tuned. The reason they are bottoming is the large enclosure, 7+ cubes sealed is rediculous for 2 12's, thus mechanical limits are reached at lower power than rated Pe.

fuckin' noobs.

 

[thevic24 5,000+ posts]

Sealed boxes CAN be tuned. The reason they are bottoming is the large enclosure, 7+ cubes sealed is rediculous for 2 12's, thus mechanical limits are reached at lower power than rated Pe.
fuckin' noobs.

^^^this

the larger you make a sealed box for a given sub,(in general) you will loose power handling and the sub will have a lower overall responce.

the smaller you make it, the more power it will take/use and will have a higher roll-off.

you can "tune" a smaller than normal sealed box by usning polyfil to stuff in the box. it helps make the sub act as if it were in a larger bax then it is in.

 

[juukno 10+ year member]

good info bro.. i was figuring that the box had a major role.. it came with the subs so i decided to roll with it.. time to get-a-cuttin' //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

how do you set your amp gain with a dmm by the way?

 

[juukno 10+ year member]

figured it out