Question about Infinity 1250w Car Subwoofer

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My infinity is blown and i know u can fix them i just dnt no how to get to the coil without taking the cone how u do it?????

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Re: My infinity is blown and i know u can fix them i just...

You see that black round on the middle, ussually they put name print (infinity). You have to take that to access the voice coil. You can use a soldering iron to heat up the adhesive but make sure you dont burn it. Use a low wattage soldering iron.

Posted on Sep 01, 2007

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Throw it away, usually there will be some damage to the voice coil if the excursion has exceeded the design specs

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Sub repair

Well actually you can repair it your self with geat ease i may add,,

actuall all that can go in the speaker is the coil.. Yep the coil thats all

You will need a coil for it, a dust cap and the cone.
1.) using a knife, cut the cone off
2.) ulsolder the coil from the speaker
3.) resolder the new coil
4.) firmly fit and glue the coil to the new cone
5.) glue the cone to the metal edges of the speaker
6.) glue on the dust cap..
7.) have a beer your done..

You can get the parts at any local electronisc shop, I'd recommend you cut the cone and the coil off and take it with you when buying parts.

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My subwoofer distorts/rattles. the amp isnt the problem and the wiring was done correctly. maybe the sub is blown? can anyone help me? does anyone know how to fix it? if so can the walk me through it or...

If it distorts and rattles, chances are high that the woofer has blown, which usually means the wiring around the cone overheated or the cone itself hyper-extended. In either case, it would have caused irrepairable damage.

To my knowledge, it cannot be repaired. In this case, I hope I'm wrong...

Best of luck!

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Speaker lesson here. For space and time, I'll not get into certain nomenclature. Working from top to bottom, you have the cone, rubber surround, basket, spider, voic coil former, voice coil, and the magnet. The binding posts are connected to the tensil leads which connect to the spider and the voice coil. As the woofer is positively + and negatively - charged, it creates a magnetic field which moves the woofer up and down. There is a small gap between the magnet and the voice coil and former that's called a magnetic gap. This gap is what helps the speaker to move up and down, and creates the Xmax. The Xmax of the woofer is the maximum linear excursion the woofer can travel without causing permanent damage. With a blown speaker, normally the voice coil and voice coil former have been pushed out of the correct magnetic gap, usually around the top of the magnet. That means that the only way to fix it is to take the woofer completely apart. My suggestion is to just go and spend the money. A blown speaker is a sign of abuse, and voids warranties from the majority of companies out there to include Kicker.

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1 Answer

My basslink worked great, son blew fuse, replaced, now sounds lik

If the speaker has been overdriven, it may have damaged the cone surround or damaged the speaker coil, causing it to 'rub' inside the magnet. To check for rubbing, you need to move the speaker cone backwards and forwards by hand and listen where the speaker coil/cone goes into the magnet. It should be silent if ok. If you can heara rubbing or grating noise, then the speaker is damaged. If the output driver on the amp is damaged it can give a distorted sound, which could easily happen if it tries to provide too much current.

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Just had a response on a problem ive got with my sub thank you to '' etirbynnor '' but im being thick now haha what is a sub voice coil thank you

Hello again empsglen,

"If the sub voice coil is open, you will get exactly no sound. No crackling, nothing.

Use a multimeter to check the sub voice coil. If the meter reads infinity, the coil is open and to the amp, it's as if there's no sub connected, and you will need to replace it."

Sorry about that.

OK, my clarification assumes that you know how to set a volt-ohm-milliamp (VOM), or multimeter up to measure ohms, and that you have such a meter or have access to one.

The voice coil is the part of your sub that connects to the amp output and causes the cone to move in and out in response to electrical signals. If it is open (broken, burned) there will be no electrical flow and the cone will not move. A good voice coil will read a resistance (impedance) on the multimeter. If the coil is open, the meter reads as if it wasn't even connected (infinity) and if the coil is shorted, the meter reads zero (dead short). Simply put the meter across the speaker terminals and read the results.

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if you use a right channel on one coil and a left on the other different frequencies are going in different directions in each channel thus blowing a coil or badly damaging it-z

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Agree with Kev. Even if the woven lead wire looks ok, it can still be bad. I unsoldered it, clipped a lil from both ends, and re-soldered it. Works great now.

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ive had that happen to me with 2 12in infinity subs . (my first system) haha  i dont knwo what it is but it sounds like a piece of solder weld has broken off in there where the voice coils conect to the cone..  its a manufacture defect  nothin you can really do about it without taking it totally apart ... then the hard part is putn it back together .. specially if it wasnt suposed to ba taken apart lol     

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