The rubber membrane between the paper cone and the edge of the speaker that attached to the cabinet is falling apart. Can this rubber material be replaced to repair the speaker?

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.

I assume you speak of the loudspeaker or drive unit which is fitted with a thick gasket material around the edge of the cone where it is bonded to the outer flange of the speaker chassis.

The gasket material and the outer edge of the cone will be clamped when the speaker is mounted to the baffle and screwed down tightly.

The clamping force greatly reinforces the bonding of the cone to the speaker chassis.



The gasket material is important to provide an air-tight seal which is especially important when used in an infinite baffle enclosure.



With extreme care the gasket can be removed and replaced with fibreboard (the traditional material), closed cell foam or cushioned vinyl.

Water based adhesives must be used with care so wetting of the cardboard or paper cone is avoided. The finished gasket should be the same dimensions as the original so it doesn't restrict the travel of the cone and speech coil. A uniform thickness is also important so the chassis is not twisted or distorted when mounted to the baffle board.



It is possible to have a loudspeaker drive unit repaired or overhauled and it might even be possible to obtain spare parts. The process requires much experience. The cost of mass-produced drive units is so low professional repairs are uneconomic and so such a service is only suitable for special, high performance, high quality, hand-built units.

Dear Rob,
Really Thankful for the detailed description for the Speaker Repair.
It really helped me a lot. I have a unusual situation here with me. I have dissected the whole console and found the outer band of the speaker has just come off....have attached photos to make it clear. does the outer speaker cone will make a difference or i will have to replace the speakers itself.....when i checked pressing the speaker down and played the distortion had gone....but while playing without holding the distortion would come back....Hope you can help me in this situation....Thanks in Advance.....

Remove the protecting grill in front. Check if the cone is still connected to the rubber band. If not, remove the screws around the speaker. Open the casing itself. Do not forget the screw in the middle of the battery compartment. Remove the bottom cover. Disconnect the 2 wires on the speaker and take out the speaker. It will come out with the plastic protection around it. Looking at the cone now, push up the Carton cone and keep it in place by putting some tissue paper or small cloth underneath. Clean the cone first. Use some rubber cement on the outer edges of the cone and press the rubber back on the cone. Let it dry for an hour and then remove the tissue / cloth, so the cone goes back to its normal position.You can use some extra rubber (those pre-glued strips that you would use to fix a bicycle tire) to make it extra strong. Remount everything back in place and voila....it works again!If your cone is not damaged, the casing most probably does not seal good anymore. Tighten all screws a little more and use plastic electrical tape all around to seal all joints. The bass is produced inside the casing itself and pushed out via a horn. If it is not closed off well, your bass sounds grumpy.

Hello
Your speakers' lead wire has a break in it. Lead wire is one that goes to the speker paper cone, from the connection point. It is a brided copper wire, very thin and flexible. If you be carefull, you can repair it. Speaker lead wire can be bought from electronic spare part shops. Just find out the size use in your speaker, buy a short lenth of it, say half a meter or so [even though it needs a few centimeters]. Look on the spekares leadwire fittings; you can compare the fittings of the other leadwire, and replace it. It is a very keen and sensitive work. After replacing the wire, fix it with some sort of rubber based gum. That is all. OK.

having only one speaker that sounds scracthy tells me that one or more of your drivers are blown, the tweeter, midrange or full range drivers (speakers). have you swapped the leads @ the amplifier to see if the scratchy sound moves to the other speaker? if it does, your problem starts before in the pre-amp stage. if it is the same speaker you can isolate the problem by swapping indiviual drivers with the good speaker, or you can cover individual drivers to determine where the scratcy sound is coming from. it could be the surround ( the rubber or butyl material that attaches the cone to the frame) is rotted from age. which can be replaced

Hi, Jr.

I'm sorry, but glue will not fix this problem. When the rubber or foam edge of a speaker breaks down or deteriorates because of age, it becomes almost like dust, which is why it cracks and then breaks apart and falls away from the speaker. The only way to fix it (besides replacing the speaker) is to replace the edge, or "surround". At this link, http://www.simplyspeakers.com/All-Foam-Kits_c_118-1-3.html, you will find a kit that you can buy to repair your speaker for about $30. The standard 12" repair kit will work if you have an 'angle cone edge attach' type speaker (see the bottom of the page for a picture of what this means). This page, http://www.simplyspeakers.com/speaker-repair-foam-edge-replacement-instructions.html, will show you step by step how to use the kit to repair your speaker.

Good luck, and please remember to rate my help.
Thank you for the opportunity to help you.

Search for "speaker re-coning" to find a repair shop.

First pry off the rubber gasket. Then take a razor and cut out the cone, cut as close to the outer edge of the surround as you can. Then snip the tinsel leads connecting the cone to the spider. Then take your knife and cut out the spider. The cone and voice coil should now slide out. The rest of the speaker can be takin apart with a screwdriver and hammer.

Now hide from the owner of the speaker, he will probably want to hurt you.

Guy