Dome tweets can be 'sucked' back into shape with a common vacuum cleaner.
You do have to be careful as you bring the open (vacuum on) hose end up to the dome. Do NOT place it directly against the dome. Just bring the hose sucking end up toward the dome. Keep a few fingers between the flat around the dome, and the hose end. When the hose is in around a quarter inch or so away the dome will pop out and back into shape.
The crease line may still be visible, but the domes should work just fine.
I have done this a few times over the years.
The last was for my B&W 805s.
Great job, Elizabeth. I could not have explained it better.
You can be sure tthis will work fine and your speakers will be restoreed to good health.
Vacuum cleaner suction can be tricky, placed too close and the strength of the suction could displace the voice coil. I suggest getting a cardboard tube from an empty paper towel roll, placing one end over the dimpled driver, and placing your lips inside the other end, and then gently suck. Works like a charm most of the time.
Unsound got it right! Or skip the tube tube altogether, and simply put your lips gently around the tweeter's dome and suck gently ;-)
Unsound and Frogman need to hook-up sometime. LMFAO
Tpreaves, they don't make a tube long enough!:-)
Those Dynaudio tweeters must look like clown noses to young kids. A friend's 3-year old poked my Dynaudio Contour 3.0 tweeter. He saw it, extended his index finger, and made a beeline from ten feet. Irresistible! But he was the only one laughing. I fixed it by bending a right angle with needlenose pliers in very tip of a pin, barely snagging the fabric in the deepest point of the dent, and gently pulling. The dent popped right out with no damage. Good luck!
Voice coil assembly can be dis-assembled from the back of the tweeter - VERY carefully these are fragile parts. You can then access the dome from the back and push it back into shape- if they have been sitting with dimples for a long time creases may have developed - and they can be very hard to get rid of - sometimes impossible.
Above only of course if your "smooching" suggested above fails to elicit the correct results :-)
It seems the first questions should be - is it audible?
If only one was dented, is there any sonic difference between it and the undamaged tweeter.
I used the bent (L shaped) straight pin once with a fabric dome tweeter, then applied a speck of glue over the tiny hole. But I've not had any success with the suction method. Perhaps I was being overly cautious.
I have a small dent in a stiff paper cone (Fostex) that I can't remove with mild suction. But I don't hear any difference from the other channel so I live with it.
I have repaired hundreds of speakers, Peters suggestion is the only tried and true method.
Please post pics if you decide to go with the direct-lips-on-tweeter procedure. Of the process, not the result. I promise not to post them on youtube.
will try the SUCKING.. hehe
yup, there is a difference in overall sound..
I called dynaudio, they do not recommend vacuum cleaners, too much suction. They recommended a combination of scotch tape and suctioning with your mouth. Worked perfectly for me on a pair of audience 40's
I've had good luck with clear, 3m type tape...not the heavy duty packaging type...the kind found in offices, etc...or in severe cases...you can use the eraser end of a pencil from the back side...
Thanks elizabeth-- it worked.. I used the vac technique, smooching didn't work for me:)
Damn...I was hoping you would get a cold sore...speakers tend to get around....ha
been running music on the SE and I found that something is amiss with the sound (can only hear though on some recordings-- crakling like sound :( ).. Does anybody have any idea what are the chances of damaging the tweeter or how are tweeters arranged in sequence..
The question I had was once you're able to pop it back is the tweeter damaged even though visually the tweeter looks ok
Are sonics effected once the tweeter is pushed in
Once a soft dome is deformed with a crease, it no longer behaves the same way under operation. What likely occurs are deviations from the original frequency response above 7000Hz where the dome typically starts entering resonance modes. The deformations and creases that might be in the dome now will alter those modes and change the way the tweeter radiates.
If you can quickly correct a poked in dome so that there are no creases, you stand a better chance at an unaffected speaker. If it hasn't been corrected for a length of time and creases permanently establish themselves, your best bet is to replace the dome assembly, which in the case of Dynaudio, an expensive proposition.
You won't know until you listen to the popped back tweeter (driver).
My buddy's tweeter was pushed in and then immediately came out on it's own there is still a crease but not sure if any damage was done
I think these things are really delicate
He's debating whether to change his tweeter as a result
What do you guys think ?