Is my sub ALREADY blown or is it my box?

[hornedfrog1985 5,000+ posts]

hi

 

[nickolas_j_t 10+ year member]

I'm just going to buy one on ebay... Just to be safe... My sub isn't blown correct? I just unhooked the positive so I don't do anymore damage...

 

[nickolas_j_t 10+ year member]

http://cgi.ebay.com/JL-Audio-13W7-13-W7-Ported-Sub-Enclosures-Box-MDF-1x13_W0QQitemZ250483618603QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3a51fcb32b&_trksid=p3286.c0.m14

http://cgi.ebay.com/VENTED-MDF-SUB-BOX-ENCLOSURE-for-a-JL-AUDIO-13W7-13-W7_W0QQitemZ180392032628QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2a0033f974&_trksid=p3286.c0.m14

which one for loudness?

 

[Ferendon 10+ year member]

A Slash series 1000/1 and 13w7 is a good combo, but very particular. Take out your owner's manual, and it will show you exactly how set the amp for that sub.

Sounds like the input sensitivity is too high to me. Should also have infrasonic at 25Hz, and JL recommends a 30Hz tune for that sub. Tune shouldn't be a big deal, but input sensitivity makes all kinds of a difference on those amps. It's not a volume knob.

I like this part...

Built to JL Audio's EXACT specs for a 13W7 woofer

Double-Faced Front Baffle (for added woofer support)

Net Int. Volume: 2.375 cu. ft.

Tuned @ 34.59Hz for MAXIMUM "SQL"!

Gold-Plated Speaker Terminals

Show-Quality Custom Carpet

Dimensions (W x H x D): 25.25" x 17.25" x 16.5"

JL specs are for 30Hz.

 

[Vermithrax 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.

 

[nickolas_j_t 10+ year member]

ok so what i'm hearing is the woofer just working so hard and nothing to stop it from doing that? How come it didn't do that 2 weeks ago?

 

[nickolas_j_t 10+ year member]

A Slash series 1000/1 and 13w7 is a good combo, but very particular. Take out your owner's manual, and it will show you exactly how set the amp for that sub. Sounds like the input sensitivity is too high to me. Should also have infrasonic at 25Hz, and JL recommends a 30Hz tune for that sub. Tune shouldn't be a big deal, but input sensitivity makes all kinds of a difference on those amps. It's not a volume knob.

I like this part...

Built to JL Audio's EXACT specs for a 13W7 woofer

Double-Faced Front Baffle (for added woofer support)

Net Int. Volume: 2.375 cu. ft.

Tuned @ 34.59Hz for MAXIMUM "SQL"!

Gold-Plated Speaker Terminals

Show-Quality Custom Carpet

Dimensions (W x H x D): 25.25" x 17.25" x 16.5"

JL specs are for 30Hz.

http://mobile.jlaudio.com/products_subs_enclusure.php?series_id=10

what does that say then?//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[westman995 10+ year member]

No man that was your sub most likely bottoming out. DO NOT run it anymore in that box. I had a good feeling that box was too big. You measured wrong or something when you built it. If you want, im sure you can still build it to that size with the box you have, you just need to take it apart and trim it and put it back together. Id trim the parts with the glue as much as you can to make it easier to put the box back together. The sub is more than likely still good if its not making noise all the time, its good. Dont worry about it. DO NOT buy a box on ebay.. Resize your current box and you will be happier.

Just use the dimensions from that plan you linked. That will make it alot easier. And remember, measure twice, cut once.

EDIT: By the way, it may not be quite 4 cubes if you didnt subract the port area. But either way, the box is too big and that was the problem. I strongly suggest just resizing the box to the plan you linked.

 

[chardy85 10+ year member]

Shit dude that sucks. You should have double checked that box.

So is that the box that the 10 was in?!

For now instead of ordering a new box just take that bish apart and use the wood to throw together a diff ported box or even a Sealed box. That would be one way to see if the sub still makes the sound at high volume. Also, check those VC's and make sure each one still reads 1.5. Another thing, do you have that sub wired in series at 3ohm? Because if you have it in parallel it could be at .75 and you could have the gain high enough to clip that thing.

 

[nickolas_j_t 10+ year member]

LOL i thought we had it right.... My step dad is teh one who built it. He recently retired from being a carpenter for 35-40 years and eventually worked his way up to a superintendent of a big name building company before retiring. We used those dimensions, i just don't know how it got messed up. I will tell you guys with the updates. How will i get it apart with the glue? I glued the sides, and not the top.

 

[chardy85 10+ year member]

No man that was your sub most likely bottoming out. DO NOT run it anymore in that box. I had a good feeling that box was too big. You measured wrong or something when you built it. If you want, im sure you can still build it to that size with the box you have, you just need to take it apart and trim it and put it back together. Id trim the parts with the glue as much as you can to make it easier to put the box back together. The sub is more than likely still good if its not making noise all the time, its good. Dont worry about it. DO NOT buy a box on ebay.. Resize your current box and you will be happier.
Just use the dimensions from that plan you linked. That will make it alot easier. And remember, measure twice, cut once.

EDIT: By the way, it may not be quite 4 cubes if you didnt subract the port area. But either way, the box is too big and that was the problem. I strongly suggest just resizing the box to the plan you linked.

lol, you beat me to it

 

[nickolas_j_t 10+ year member]

Shit dude that sucks. You should have double checked that box.

So is that the box that the 10 was in?!

For now instead of ordering a new box just take that bish apart and use the wood to throw together a diff ported box or even a Sealed box. That would be one way to see if the sub still makes the sound at high volume. Also, check those VC's and make sure each one still reads 1.5. Another thing, do you have that sub wired in series at 3ohm? Because if you have it in parallel it could be at .75 and you could have the gain high enough to clip that thing.

its wired at 3 ohm. And I will measure when I work on box.

 

[Skip01 5,000+ posts]

Id bet 50 bucks it is ur box coming apart....mine had tons of screws and no glue and the top came up a good 1/2 and made a crazyyyy noise:

http://s63.photobucket.com/albums/h136/DatDudeBL/Vidz/?action=view&current=Boxapart.flv

 

[nickolas_j_t 10+ year member]

I don't think it is. I think its the sub bottoming out.

 

[SPLaudio 5,000+ posts]

u need ur sub alot closer to ur hatch to get loud...