Is my sub ALREADY blown or is it my box?

[ThatChevyGuy 5,000+ posts]

its probably bottoming out

A W7 BOTTOMING OUT???! NO WAI!

 

[AllenH427 10+ year member]

The best way I can see you guys measured it wrong, was you measured the front piece as 14", then you added the top and bottom pieces, so it actually would've been more around 15.5".

 

[nickolas_j_t 10+ year member]

its to long in width.

 

[Skip01 5,000+ posts]

Get a video of it doing it.

 

[SomeGuyDude 10+ year member]

It's possible you're hearing the sub unloading at high volume from being in such an oversize enclosure.
You're not screwed. You need to find out what the port displacement is and subtract that from 4.2 to find the net volume. JL recommends 2.375cf @ 34.59hz. You can glue some 2x4 blocks inside or wall off a portion of the box to reduce the volume, try to get down to around 2.5cf. Double check the tuning, it'll change when you reduce the volume.

The other option is to start over and use the rec'd box dimensions on JL's website.

It might be easier to just rebuild. The tuning is gonna be WAAAAAY off if he stuffs enough 2x4's in there to change the volume from 4.2 to 2.375, like if he tuned it to abotu 33Hz initially it'll be near 45. To fix that the only solution would be to start sticking wood into the port to make it thinner, but I think those calcs would be a nightare.

 

[nickolas_j_t 10+ year member]

Get a video of it doing it.

i will later.

I've decided to just make the width smaller. According to JL spec's thats the only thing wrong...//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[nickolas_j_t 10+ year member]

http://img29.imageshack.us/img29/733/25cubes32hz3125sqin0zp.png

That plan is NOT 2.5 cubic feet....

I built it exactly to that....

 

[kodak314 10+ year member]

//content.invisioncic.com/y282845/emoticons/wave.gif.002382ce7d7c19757ab945cc69819de1.gif

knew it was comin

 

[kodak314 10+ year member]

//content.invisioncic.com/y282845/emoticons/slap.gif.87520e8ca8e90076ac30e777c0de5331.gif and this is the same box u had the 10 in //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

 

[bagged97tacoma 10+ year member]

When I get to bumpin it makes this really bad noise. It just doesn't sound like bass at all. It's more of a rattle noise. Nothing is in the box. It's a 13W7 in a 2.5 Cubic Foot box tuned to 32 hz. It's less than 2 weeks old..

sounds like typical JL Audio to me...

 

[nickolas_j_t 10+ year member]

//content.invisioncic.com/y282845/emoticons/slap.gif.87520e8ca8e90076ac30e777c0de5331.gif and this is the same box u had the 10 in //content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

yeah.

I need to know how much to cut it down. I want to get a RIGHT box. How should I cut the width down. What should I cut it down to?

 

[nickolas_j_t 10+ year member]

cmon guys you know im right.

 

[southpoleman69 10+ year member]

cmon guys you know im right.

dude, i think what all the guys are trying to tell you, is that to brgin with, you shold have listened. if you would have, you wouldnt be in this position, AGAIN, and yet you still arent listening.

All i can say to you sir, is go ahead and do what you want, just throw your money away, for a second time

 

[nickolas_j_t 10+ year member]

WTF should i be listening to dude?

 

[southpoleman69 10+ year member]

from i understand, and have read, some of these guys have told you numerous times ur box was to big and thats your problem, and yet you ignored, and its still happening.

they also told you to get a vid of what you keep talking about, but you refused a few posts back, saying, you would do it later, and ended up never doing it.

Go through this thread, and the thread when you had the 10, and read over it