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A cone has been bent inwards. Is it possible to quickly repair? If so how?

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  • Chip
    Chip May 11, 2010

    Ive used a small suction cup before to press on the cone and have been able to pull it back into shape, but that was on a large 15 woofer.


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If you put your fingers gently on the rim or the edge of the cone and slowly bring your fingers together, the caved in part might pop out, but be very careful because this part of the speaker is very very fragile and sensitive.

Posted on Sep 05, 2009

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Hi duff i went into a big hole in the road hard then the next day my tire started to turn inward and yes my shocks are over do we look under and its just band so i think we need to make it stright

from your description you have bent a lower control arm of the suspension and possible other body mount damage as well ( axle broken and is now breaking further )
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It sounds like your speaker surround blew away and separated from the speaker cone and/or housing. I'm in the process of fixing one my speakers by replacing the surround.

Generally, when this happens, you'll want to completely replace the speaker surround (the outer ring that allows the speaker coil and cone to travel in and out, usually made of rubber or foam rubber). This isn't necessarily super difficult, it just takes some time, skill and patience, if you want to avoid messing up the speaker and sound from it.

Inspect and repair your existing speaker:

1) Measure:

a) the diameter of your speaker cone (outer edge of the angled piece that goes inward toward the center coil) and the

b) diameter of the speaker housing (the metal "frame" part the speaker surround glues to, which is usually where the speaker mounting holes are located).

whether the area on the speaker cone where the surround connects to is flat or angled.

2) Ordering: You'll want to purchase the new speaker surround to match the similar material you've already got, as close as possible to the exact dimensions you measured in either flat or angled for mounting to the speaker cone. tends to be a bit more expensive than others than can be found online, and they will normally have what you need. Their speaker surround repair kits normally come with instructions, surround, glue and a little brush. I found hunting around can save 50% or more.

3) Gluing: Get yourself some Aleene's Tacky Glue (online or in craft stores), and make sure you don't use too much or too little, applying in a uniform coat on one surface, then applying gentle pressure to get the surfaces to stick, and allow it to dry completely for 24 hours.

IMPORTANT: This can be tricky, so be patient, or you're buying a new speaker. If you don't feel comfortable, take it to be repaired properly.

Typically, you'll want to start gluing the new speaker surround to the outer portion of the speaker cone, either on the underside or inside, as it was with the prior surround. Make sure it's centered, applying just enough glue with a brush to insure it holds and you can still slide everything around slightly into proper position. Gently move the speaker in and out to make sure nothing is rubbing. Allow this to dry for a full 24 hours, and do NOT attempt to glue the surround to the housing until after the cone glue is completely dry.

Now, it's at least 24 hours later, you can do the same thing by applying an even layer of glue to the surround (or onto the frame) to complete the new surround replacement. Apply light pressure to make sure it's centered, again gently moving the speaker in and out to make sure nothing is rubbing. Allow this to dry for 24 hours, just like before.

I know, impatience makes this difficult, but then you don't want to be doing this all over again by trying to move too quickly. Worse yet, you can end up completely destroying your speaker cone.

The nice thing about that tacky glue is is holds well and allows you to position things for a while before it sets. Just remember to allow the proper drying time, which is always way longer than the dry glue you can see.

Remember to defer to a professional repairman if you do not feel comfortable doing these repairs yourself.

I hope this helps!

Feb 16, 2012 | Kicker S15L7 Car Subwoofer

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The right wheel is wobbly and tilts inward and outward - appears to be close to falling off... Is this a do-able repair? what parts might I need? Thanks!

Sounds like the baring has collapsed. I don't know your model but I can see from the picture it has a bicycle type hub. Check out your local owner operated bike shop. I'm sure they could help. A bicycle hub has ball bearings sitting in a channel in a inner hub and a cone shaped outer hub that is wound in to set the play. Your cone has wound out a bit, usually you wind of the outer lock nut, tighten the cone to get a free running wheel with no wobble then retighten the lock nut.

Jan 23, 2011 | InSTEP Safari TT Double AR265 Jogger

3 Answers

Speaker repair

Contact MMats Pro Audio at 561-842-0600. They can re-cone it for you, or sell you the re-cone kit. If that does not work for you, contact MWA Speaker Parts in Tuscon - 520-647-7193. They can sell you a re-cone kit, or they can direct you to a speaker repair center near you. A third option would be to contact Sundown Audio in Troutman, NC. They may be able to re-cone it for you.

Apr 18, 2009 | Mmats Juggernaut 15'' Car Subwoofer

1 Answer

Loss of power & clarity

Do they sound good at low level? If so i would suspect the drivers may be a bit smoked.Some drivers will still work after being overheated but exhibit a lowered impedance to the driving amp and do all sorts of bad things including possibly burning up the driving amp.If they are still under warranty,bring them back and tell them they better check them out again cause your 12 year old cousin can tell they are in distress and if they still can't find anyhting wrong maybe you can get him a job.But seriously,give them the smell test.Put your schnozz near the center of the woofer cone, then tweeter center to see if you detect any burnt smell at all.even a little bit can be a clue that there is a big prob.Next step is to remove the suspect from the case and give it a feel.while you are doing this,give the amp circuitry a quick visual for anything burnt or obviously dammaged.The smell test is really good for the amps as they get REALLY smelly when they are in trouble.Try to gently move the cone inward and then outward.NOT hard enough to damage it but what you are looking for is any slight drag or uneven cone movement like a slight scraping.If you have another decent speaker that is similar in size(not really necessary) and quality(i consider this very necessary),try the substitute to see if you are on the right track.What we are trying to do is narrow the prob down to the actives(amp/crossover circuitry) or passive(actual speaker mechanisms).Actives need a tech.Passives need you to get a replacement speaker and install it yourself.may be just a woof or maybe a woof and a tweet or whatever.remember,you need to listen closely(this is a mental process) to decide if what you hear(physical process) is good audio.Take it from there Sparky!This process is good for any active speaker.

Feb 25, 2009 | Mackie SRM-450 System

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