Question about Alesis M1-Active MkII Main / Stereo Speaker

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Busted cone (i think)

Hi, my left speaker is distorting, i think that i may have a small tear or loose glue somewhere on the cone. how should i fix it?

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  • nomdecodenik Aug 21, 2012

    Did you get this fixed, is the problem solved?



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First try swapping the leads on your source, powering the left speaker with the right channel, and the right speaker with the left, if the problem follows, then the issue is with your source, and not the speaker.
If the cone is torn, then try to patch it, using some basic glue and several layers of tissue paper. White Glue, embed tissue paper in the glue, more glue,embed tissue paper in the glue, do this several times building up several layers. Guessing this is a standard paper cone...
Now if you are still having the issue, could be that the woofer is damaged. Look for a replacement.


Posted on Aug 20, 2008


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Posted on Jan 02, 2017


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1 Answer

Fix a torn speaker cone?

If it is a woofer, you would probably fix it quite easy. If the speaker driver is used for both bass and midrange, you have a problem.
Fixing a speaker cone is depending on the material. If it is paper cone, it is very easy by using paper that you glue with wood glue (White water based glue) on to the cones rear side (for estetic reasons).
A midrange or bass/midrange driver is operating in frequencies where the cone starts to break up. Not torn apart, but the break up frequency is the frequency where the inner and outer part of the cone not longer follow each other in the same direction. These properties of a cone determine the sound of the speaker which is that type of speaker drivers "identity". Messing that identity up, you end up with a speaker that does not sound as the original one.
Remember that cross over network used to split up frequency ranges, not only are lowpass, bandpass, and highpass filter, but they also filter irregularities where the speaker driver is not longer providing a linear frequency response (Its characteristic sound).

If the cone is polypropylene, there isn't much glue that bite on that material.

May 02, 2016 | Audio Players & Recorders

1 Answer

My 3 month old subwoofer just started rattling and distorting badly (Busted speaker I assume). I emailed tech support 3 days ago but no answer. What am I up against getting it fixed under warranty?

It could be anything from a damaged speaker cone to a loose / rattling glued joint, screw, etc. If it's under warranty (after only 90 days I would hope so) let the manufacturer handle it for you. Otherwise, I'd crack it open and see what it needs and decide how to proceed after getting prices for replacement parts.

Oct 23, 2015 | Audio Players & Recorders

1 Answer

My lg bh7420p surround sound system is distorting through the front speaker on dvd playback

Check if the speaker cone paper is teared off or got some hole on it. Or may be the outer ring of cone/cap is loose ,

Apr 13, 2013 | Entertainment Lg Bh7420P 3D Blu Ray 5.1...

1 Answer

Can I repair/replace the cone on my PSB Alpha Sub Sonic 1?

Repairing a loudspeaker's torn paper cone can be cheap and effective. You'll need some water-soluble glue and a paper tissue. Some people use part of a paper coffee filter. Others prefer a paper towel.

First experiment with a small strip of thin tissue paper. Apply some glue, diluted with a little water so that it soaks into the tissue easily, and leave it to dry. The glued strip will now be stiffer, but it needs to be flexible, not brittle. If necessary, try making the glue more dilute, or try other glues if the first type seems unsuitable.

Carefully smooth out any distortions in the damaged cone with your fingers. Tear out a piece of thin paper tissue to cover the tear in the cone. Then thoroughly soak the tissue with dilute glue and apply it over the tear and smooth it down using a small smooth spoon. The torn edges of the tissue should ensure that there is no sudden change in thickness of the repaired cone. Leave to dry for 24 hours.

For a relatively powerful speaker such as this one, the repair process should be repeated on the other side of the cone for added strength. For cosmetic purposes, the repair can be disguised using a very light spray of matt black paint.

Jan 08, 2018 | PSB Alpha Sub Sonic 1 Speaker

1 Answer


If the tear is large, or the speaker cone is brittle because of age, you might be best off having the speaker completely reconed. There are companies that offer the service, or you can buy replacement cones and do it yourself.

For small tears (an inch or so long), you can glue a patch in place. I have used a piece of a paper coffee filter as a patch, and plain white Elmer's glue slightly thinned with water. Put the patch over the tear and use a small brush to spread a thin layer of glue over it. Give it a day to thoroughly dry and you should be set.

I have found this repair to be more effective on smaller speakers than on large woofers, though. The woofer cones are more mechanically active. But I patched a couple of 15-inch cones that had been punctured for a friend, and they are still playing after a year. So it can't hurt to try.

Jan 30, 2011 | Audio Players & Recorders

1 Answer

I have a mirage ps12 180 subwoofer and the convex ring around the cone (feels like foam) has a tear in it. Can I use the Elmer's glue and tissue paper procedure to fix it?

Do not use any glues over the foam, it makes the foam get harder and probality of further damage leading speaker replacement. If you have a masking paper tape try to stick on torn area atleast to avoid further damage. But, all this attempts will give a loss on speaker's audio response. If you are not a big audio phile , you can manage doing it.

Dec 15, 2010 | Audio Players & Recorders

1 Answer

I have a 15'' Yamaha MSR800W powered sub speaker with a torn cone. Can I replace this myself or should I send back to be repaired?

If you have a warranty on it send it back, if you don't you can do several things. It depends on how bad the tear is. If its a small less than 2 in or so tear, a beed of hot melt glue on both sides of the cone is a sturdy but not permanent fix. If its a large tear you'll need a new cone. I looked a bit online for recone kits for that model but i couldn't find anything. So my advice would be to find a speaker service in your area, or send it back to yamaha for repair. If you want you can do a more thourough search for a recone kit, you might find something... hope you get it workin.

Sep 15, 2009 | Yamaha Music

1 Answer

Fixing the middle piece of the sub

Hello stoge52,

Many people do their own speaker repairs and it is many times perfectly satisfactory. The folks who do a lot of it are musicians who seem to bang their equipment around quite frequently.

The problem with your JL sounds like the dust cover and not the cone itself, so you are lucky in that respect. Repairing the cone is more involved and it's rather tricky to duplicate the thickness, rigidity, and original elasticity of the cone. It's usually best to simply replace the cone, a process called "reconing". But gluing the dust cover is perfectly acceptable and not much of a job at all. Don't try super glue. It won't work. I'm not sure about rubber cement, though, but I've never heard of anyone using it. Many pros use silicone sealant. Either black or clear looks best for speaker repair. A somewhat better product is a tennis shoe repair product called "Shoe Goo". It's a little lighter and remains more pliable than silicone sealant, making it a better choice for lighter speakers. You can usually find "Shoe Goo" at larger sporting goods stores. If you want to use something that is made especially for gluing speakers, here's a link to a product called "Prosound Loudspeaker Recone Adhesive" and is advertised as the same black adhesive as that used by many major speaker manufacturers. It's $19.99 for 8 fl oz, more expensive than silicone sealant. Is it better? I don't know. But if it were MY JL, I'd probably spring for it.

You may want to gently remove the dust cover entirely from the speaker and make sure that there are not any tears in the cone itself. If there are, you should repair them first.

Also, when you reglue the dust cover, wait a MINIMUM of 24 hours for the glue/sealant to set up and cure properly. If you start the sub thumping before the glue has fully cured, you'll have the same problem again. One other thing, use just enough glue/sealant to do the job. Don't think that more is better. A consistent thin layer on the entire surfaces being joined is best. A gob here and there will not hold for very long.

The alternative is to send it out for repair. And since it is a JL, I would not send it anywhere but JL. Be advised that is not going to be cheap. And it's going to be time consuming. Probably at least 25-50% of the cost of a new sub and probably a minimum of 3-4 weeks, sometimes longer. And don't forget, you'll pay shipping both ways.

Hope this helps.

Apr 18, 2009 | Jl Audio 12W3 Car Subwoofer

1 Answer

What kinda glue do you use on a blown speaker?

A blown speaker needs the windings replaced and re-coned. If you have deteriorating foam\cardboard type edges you an use clear silicone caulk from any home improvement store to fix small tears or detererioration. Tears and such on a large scale will require re-building.

Oct 03, 2008 | Audio Players & Recorders

1 Answer

BX8A studiophile monitors distortion problem

it could be a loose connection or the cone is cracked inside , the only way to find out is to open and take a look inside ,check the connections , the 2 wires from box to speaker, ALSO CHECK where the cone meets with the magnet , hope this helps AJ

May 14, 2008 | M-Audio Studiophile BX8a Speaker

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