Alpine Type - R "Rattle Fart"

[Kargo 10+ year member]

I have 2 SWR-1222D with a MRP-M1000 amp wired for 2 Ohm. My subs seem to have this rattling fart noise comming from them. I had them in a sealed box and at first thought my box had a leak. I removed the subs and played them in open air and they still make the rattling. It looks as if the "spider ?" ( the brown fabric looking thing ) is slapping the cone. I get the noise no matter what my gain is set at and only at a medium-low Hz. The volume doesn't have to be that loud either.

One of my friends said that since I dont have a capacitor and I get light dimming my amp is getting "dirty power" causing clipping. Would this be the case or could it just be a possible defect with BOTH subs? Any one have a similar experience?

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[crunktimes.com 5,000+ posts]

Its probably just a sub queef bro no biggie

 

[G0NGSHOW 10+ year member]

don't get a cap man, they screw with your electrical, search around and you will find a ton of info about why they are horrible

 

[Kargo 10+ year member]

You sure its no big deal? Its annoying as hell and embarasing when your showing off your system to a buddy. Its not like it dose it once and a while, it has always done it since I got the subs. Is this typical of Alpine subs?

 

[smiley2186 10+ year member]

isnt these subs dvc, because i use to own 2 of them, if it is dvc, u can only wire them 4ohm or 1 ohm, i think that alpine mrpm1000 isnt rated at 1ohm, u can only wire it at 2 ohm with a 2 channel amp or so, wire one sub to one channel then u will get the 2 ohm load. try wire the sub at 4 ohm because that amp takes 500watt at 4ohm. see how it sounds.

yes 2 ohm will take much power from the stock electric, i ran it at 1 ohm when i had them and it dime like crazy but no clipping noise, but later i pick up a 2channle bridgeable at 4ohm, and my lights wasnt diming at much. u should look for an amp that pushing between 1000-1500 watt 4ohm bridge or 1200-1700 1ohm

 

[Kargo 10+ year member]

isnt these subs dvc, because i use to own 2 of them, if it is dvc, u can only wire them 4ohm or 1 ohm, i think that alpine mrpm1000 isnt rated at 1ohm, u can only wire it at 2 ohm with a 2 channel amp or so, wire one sub to one channel then u will get the 2 ohm load. try wire the sub at 4 ohm because that amp takes 500watt at 4ohm. see how it sounds.
yes 2 ohm will take much power from the stock electric, i ran it at 1 ohm when i had them and it dime like crazy but no clipping noise, but later i pick up a 2channle bridgeable at 4ohm, and my lights wasnt diming at much. u should look for an amp that pushing between 1000-1500 watt 4ohm bridge or 1200-1700 1ohm

I have them wired like this

 

[Linkz 10+ year member]

You probably blew your subs.......

Edit:

Saw your post after I made mine. If they always did that they must be defective.

 

[Blinkrazy 10+ year member]

dont listen to your friend

amp clips only if the gains aren't set correctly

spider shouldn't be hitting cone

check wiring

that is all...

 

[Kargo 10+ year member]

Theres no way I could have blown them. Right from the start they sounded like that and when I hear that rattling I turn it down.

They sound great, its just that rattling is annoying and scares the hell out of me.

 

[Kargo 10+ year member]

dont listen to your friendamp clips only if the gains aren't set correctly

spider shouldn't be hitting cone

check wiring

that is all...

I have them wired like the picture a few posts above. Here is a diagram of my setup.

 

[Kargo 10+ year member]

i have the same problem with mine, so i think its just an alpine thing
you can only hear the rattling when you open your trunk right?

Well I have a Toyota Highlander ( SUV ) so I can really hear it good from up front. However when I go in the back and open the door it is very audible.

 

[shaneb 10+ year member]

Ground?

Wiring?

I have heard on the forums, that you are to let your subs "break in" after you install them new, is this a possible outcome from not "breaking in" the subs properly?

Edit, and it's not likely, that with the amount of people using Alpine, that they are typically functioning improperly.

Do either of you still have warranty?

 

[nauc 10+ year member]

tinsel lead slap?????????

 

[nauc 10+ year member]

how could the spider hit the cone, the cone would have to be bending backwards

 

[shaneb 10+ year member]

tinsel lead slap?????????

hmmm...maybe? but would it be THAT loud inside the box? I guess maybe if it were long enough tinsel leads to slap the cone...but he said it happens at any gain setting, assuming the speakers don't motor a lot at low gains, that would make his problem go away.