Fixing Tower Speaker: Restore Pressed-In Diaphragm for Improved Sound Quality

Please help me with my tower speaker. Namely, the convexity of my diaphragm is pressed inside. For this reason, the loudspeaker does not play any sounds well. Please help, thank you in advance

You know best if you replaced it, but you can still take a thin wire, make a puncture, then blunt it, bend it to the length of the membrane radius, insert it and try to gently pull it out by turning the needle, I do not know how useful it is, but I managed to be gentle. varnish
maybe it's funny, but it plays pretty well
I emphasize that it is best to replace.

Hello
Maybe it's a bit risky, but I dealt with it with a vacuum cleaner.

As for the convex on the speaker then ... NOT! Do not stab the membrane with needles! It is better for it and 100% effective!
Dampen this protrusion with some deodorant (NOT WATER!) In a sprat - it should be moist. Turn on the vacuum cleaner, reduce its power to a minimum (if possible), open this window on the suction pipe - the point is that the vacuum cleaner should have as little draft as possible!
When you start with a high thrust, goodbye to the speaker - it will tear the diaphragm out of the basket!
Yes "regulated" vacuum cleaner turn off . Put the end of the pipe to this lid and turn on the vacuum cleaner.
Once again: On the lightest thrust !!!
Hold the end of the pulling vacuum cleaner for a few seconds and turn it off without taking the pipe off the lid! If you tear off the pipe during the draft - you will tear the membrane When the vacuum cleaner stops - remove the end of the pipe from the membrane and see what it did. If not much, repeat it SLIGHTLY increasing the thrust of the vacuum cleaner. After a few tries, your speaker is like new. Let the membrane dry (several dozen minutes) and enjoy the repaired speaker.

I don't take responsibility for what you do with it! In this way, I have already repaired the mass of the speakers. This method is not suitable for tweeters!

I did without any slackening, etc .. nothing to do with me .. normally with a vacuum cleaner:] only know carefully that the head is the best and easiest way

Hello

I did not do without a vacuum cleaner and pricking or soaking the membrane (copolka) with the same principle a piece of pvc tube, put one end to the dome, one to the mouth and ... (it also worked on the delicate tweeter copolyers, although it is known that it is not always perfect )

greetings

I worked with a vacuum cleaner, but at my place I saved the old Milton loudspeaker 'TONSIL' and there is no sign after it ... Just do not use a washing vacuum cleaner sometimes greetings

There is a small problem the point is that either the vacuum cleaner is too weak or the membrane is pressed too much. Why not try to stick the chewing gum? somebody help me

Alternatively, you can try to peel off, shape it slightly moistened with a deodorant, or even replace the dome with a new one.
You can detach the dome with pure acetone by soaking the glue with a brush, or even pour a small bag of acetone into this channel around the dome and the glue should dissolve. If a little acetone gets into the coil, it will sink, you have to worry about it evaporating, so that no pieces of glue or dirt will fall into it.

Greetings Procekkk

As colleagues wrote before, the vacuum cleaner is the best !!! I have already "drained" a dozen or so speakers and they are all fine

..and I recently repaired the tonsila with my old vacuum cleaner .. it plays very nice until now - like tonsile

I managed to remove the dome with the dryer? It took 30 seconds of hot air directly on the dome for the dome to return to its shape and it was really pressed tightly by the 3-year-old son.
Previously, I tried a vacuum cleaner, but unfortunately it could not cope, maybe it was too weak.

I recommend a simple and quick method, only a dryer? is needed

I see that even though this topic is old, it has tens of thousands of views. The problem also affected me (of course, a responsible little citizen), so I was looking for solutions. The membrane is tightly pressed, plastic.
I tested both a vacuum cleaner and a hair dryer + vacuum cleaner. Without success. Probably because my speakers do not have a membrane made of paper or cardboard, but of plastic.
The solution was double-sided tape, and since I work professionally with industrial bonding (adhesive production), I will describe the method, maybe it will be useful to someone.
1. First, remove dust. I did not remove grease due to the sensitive glue in the membrane itself. Dust removal: clean cotton fabric + some ordinary single-sided tape to collect dust, pollen residues, etc.
2. I used double-sided rubber tape, not foam tape. Rubber, in this case Scotch, has a much better adhesive on the carrier. I cut out a piece larger than the one pressed with a piece of membrane and then pressed the tape lightly, especially in the center of the recess. Then I picked up the tape and gently pulled it evenly on all sides or even corners.
3. In one membrane, which was extremely resistant, time was needed. The thing about adhesive in single- and double-sided tapes is that the bond strength increases over time. In this case, I applied the tape and waited 15 minutes. The membrane came out without any problems, even the resistant one. I would not extend the time any longer (100% strength is reached after 24 hours) because it may hold so tightly that it will be impossible to remove the tape without destroying the membrane.

Regards.

Thank you very much for your advice. I had this problem with a speaker from VW. Pulling it out with a hoover helped.
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Duzy32 wrote:

Please help with my speaker from the tower speakers. Namely the convexity of my diaphragm is pushed inwards. Because of this, the speaker does not play any sound well. Please help in advance thank you

I would not play with any needle pricks, just replace with a new one.

>>2203610 .
The hoover worked great with my Sony paper low-midrange.
My only advice: instead of fiddling with the thrust, I opened the air bleed shifter on the handle, pressed it against the perimeter of this "convex" cap and used my finger to obscure the opening (increasing the suction ). When I heard a 'popping', I exposed the hole and removed the end of the handle from the speaker - the dome looks perfect, apart from the lighter 'veins' at the bends - it was badly dented.