Cause is easy, trauma. From what noone can ever tell you.
Warranty??? Probably not. The good news is a new tweeter usuallly is only ~$100 or so depending on what tweeter they used.
Take a peice of tape and gentle try to pull out the indent. Masking tape is best. If you really feel brave, use a straight pin. Just barely prick the surface, but don't poke a hole through it, and gentle pull out the dent. I have used both techniques in the past on customers speakers that their kids have abused.
When you say that the tweeter has a "crater" in it, do you mean that it has been pushed in?? If so, have you tried pulling it out by using something like a peice of tape? If a tweeter dome gets pushed in, you can sometimes pull it out by placing something along the lines of tape in the center of the "crater" and gently pulling outward. I have a little one myself, I have had to do this before. Anyway, I know that this topic has been covered here on the discussion forums before, if you look it up in the archives, you may get other ideas from other Audiogon members.
Hey, you could also try a low power vac. to suck it out.
Take your vacuum and hook up the hose attachement. Turn it on and very carefully approach your tweeter with the hose. Do Not Get Too Close! The vac will pull the crater out of a soft dome easily, a metal dome may be tougher...
Peak's suggestion worked with mine. Had similar problem, and covering my tweeter with a smooth soft cotton cloth, I used my vacuum and it worked!
Just be careful..
Yes, it has been pushed in. It covers about 35-40% of the tweeter dome. Well, I will see what my dealer says then I will try one of the suggestions.
What I don't understand is why I didn't hear any discrepancies in the sound. If the tweeter dome is out of shape, should it not affect the sound? And can an overload cause this kind of damage?
Honestly, the dome is (as far as I understand it) just a dust cover for the working bits and largely cosmetic -- so it really shouldn't effect the sound either way. That said, it should be simple to pull out. I've pulled out metal domes on Thiels with scotch tape, no problem. I figure a fabric dome should be even easier. As for how it got that way, I have to agree with the folks above that the it could really only happen if someone bumped into it.
By the way, a longer post on the same issue can be found here
Thanks for the responses everyone.
I took my speaker to the dealer at lunch time and he replaced the tweeter assembly right there in the store, no questions asked, and no money either. I think I will opt to keep the metal mesh protectors on top of the tweeters for now.
you can remove the tweeter & disasemble it to push it back into place, sometimes you can get just a replacement dome with the voice call & replace just the damaged part if you don't have luck with the 1st proceedure.
These things can be fixed pretty easily. I've used the vacuum method (very carefully and moving toward the tweeter with hose VERY slowly until it pulls out). Make sure no one is in room to distract you. Easy fix.
Yes, the dome is cosmetic. Sound radiates from the cone. the dome just hides the center. That's why you didn't hear a difference.
Am I the only one to pop a dome back out with my lips? I suggest swabbing them with a bit of bourbon first to make sure there are no oils to transfer, then a friendly peck on the cheek of your tweeter and order is restored!
Hammy, he is talking about a tweeter, there is no cone, only the dome! (At least in any dome tweeter I have seen).
Whether the dome is able to be returned to the original shape will depend on the material from which it is constructed. Most Monitor Audio speaker use metal dome tweeters. Once a metal dome is damaged (pushed in or creased) it can never be reshaped to the original condition. A dome made of plastic or woven cloth can usually be returned to normal condition. As some have already suggested, a piece of tape can be adhered to the pushed in section of the dome and will allow you to gently pull it out. Other suggestions listed here that work are the vacuum cleaner (but be VERY careful!) or diassembling the dome from the magnet structure and reshaping it from the inside. Sucking it out with your mouth works most of the time as well but don't let your wife or girlfriend catch you!! Another method that works for a cloth diaphragm is to very carefully "catch" the center of the pushed in section with a very sharp needle and pull the dome back into shape (you should probably try some of the other methods first).
The dome of a tweeter IS the diaphragm. Its main purpose it to produce the acoustic output of the driver. It happens that it also keeps dust out of the magnet gap but that is not its main function. The rounded section in the center of most woofers and many cone midrange drivers is really just a dust cap. It is put in place to keep dust out of the magnet gap and motor assembly.
A pushed in dome is almost never covered by a manufacturer's warranty. You are lucky to have a good dealer that has taken care of you. When everyone here has the next discussion about the value of your local dealer, please remember this situation.
Disclaimer: I am speaker manufacturer.
No Mfkeleher, I posted something funny to this thread about that yesterday, but alas, the censors must have thought it was to racy. Or on second thought, maybe I was the only one who thought it was funny.
Janet Jackson has ruined all the fun and "it" wasnt all that anyway. I would have taken the bag of chips instead.
sorry jdcrox, you're right! Wasn't paying enough attention.