Sub sounds like its rattling or burping? (Video)

[REDz28 10+ year member]

Here is the free air you can still kinda hear that noise. Now I played the test tone 32hz both free air and in box. I have a lot of air leaks I'm going to seal those up but around my subs rubber seal are about 3 leaks. How can I like put a special silicone seal that won't seal my sub to the box?

 

[REDz28 10+ year member]

 

[mylows10 5,000+ posts]

you'd need to replaced the frt of the box for that .you might wanna try to look at the bottom of the coil to see if there is any issues there to. have a friend push up on the woofer while you take a look at it as best you can . something still sounds weird tho.i'd also pop the coils separately with a small battery to make sure they are in phase correctly too.

 

[hispls 5,000+ posts]

So much bad advice on this thread. That horrible noise in the first video is your poorly built box. Sub outside the box would be buzzing if it where mechanical issue with the woofer. Off chance you were bottoming it out in the first video, but it pretty much sounded like **** on every note so my suspect is the box. If coils were out of phase it wouldn't move at all.

Free air sounds like normal mechanical noises, with sub in box you shouldn't notice that.

 

[mylows10 5,000+ posts]

i suggested the box in one of the first replies.cuz i thought it sounded like bottoming out too.but as you know that will cause damage to the voice coil too and can cause the coil to unravel .he's had a bunch of guys telling him to check the coils but no one has said to pop them to make sure that they are still in phase from the sub itself.i still also think its a bad box and too small of a port for the sub.personally.

 

[REDz28 10+ year member]

I will go pop them now so I connect a let's say D or C battery to the negative / positive post and see how each side reacts? As a test could I put like maybe weather stripping around the hole for the sub? It's pretty hard to just pull the top off like its sealed down to my box

 

[REDz28 10+ year member]

Both sides move up when put to a D battery checked each side individually

 

[REDz28 10+ year member]

Resealing box at every last spot. And putting weather stripping around my baffle. I'll test it again after its done drying. Now when you say poorly built box... Which it is lol do you mean like space wise it's screwed? Or air leaks?

 

[09civic 5,000+ posts]

Resealing box at every last spot. And putting weather stripping around my baffle. I'll test it again after its done drying. Now when you say poorly built box... Which it is lol do you mean like space wise it's screwed? Or air leaks?

Not build to spec, not sealed correctly, incorrect measurements, bad cuts.

 

[REDz28 10+ year member]

Hahaha so pretty much total **** up. Well this is why I don't build things.

 

[mylows10 5,000+ posts]

you gotta start some where

 

[REDz28 10+ year member]

Ok so now I have to ask if my sub needs 2.5 cubic feet and I want a port tuned to 36hz the box would be 36" by 15" by 11" can anyone direct me to a proper set up?

 

[mylows10 5,000+ posts]

port needs to be 4" x 43" long .i can design you a compression box with cut sheet for $20

 

[goingdef 10+ year member]

well the sub sounds fine and BTW I would pull those other vids down off youtube if I where you!

 

[REDz28 10+ year member]

I'm a legal medical card holder all Good in the mitten state. Anyway sealed that box up and sounds a **** ton better I pretty much don't hear any of that sound at all I'm going to let the rest of the seals dry, reinstall, and get another video!