Popping out dents in dust- dome. Can metal dome..


The day I got my new Klipsch RF7s, I noticed one of the domes had a small indentation. I had a friend help me unpack and position them or someone hit it with something. The indentation can be clearly seen in my system pics. I have been reseaching these forums and the web for a fix for 'metal' domes. I have found the fix for 'soft'domes, but have not found any info for the metal dome that I have on my RF7s. It is purely a cosmetic woe as it dose not affect sonic performance. Incase your interested, a better way of fixing a soft dome than the widely used 'sticky tape/adhesive' is very carefully, without any contact, use a vacuum hose. Holding it very close directly in front causes a difference in air pressure (lowers i think) in front of dome causeing the air pressure in back of the dome to increase. This gentily pops the dome dent out.

If anyone has a better way or can offer info on fixing metal domes, please enlighten. Thanks.
alburger
Ya! I like that. It really sounds like the best approch. It should be simple thanks to your instructions. I will try it out when I get the proper materials later. I will practice on something else first. For now, and always (except to show off)grill will be used. Thanks again, guys.
I must say, the ppl on these forums are as pleasant to hear as the hi-fis they adore.
If all else fails, and your're willing to take the risk of a small discoloration in lieu of the large dent. I have not done this on a dust cap, but I have used this technique with 100% success in other applications. There's no reason it shouldn't work - but use your own judgement based on the dust cap material and stiffness. Also - it's very likely that even if you pull the dent out, there will be light "wrinkles" remaining in the cap that are impossible to remove:

With the speaker on it's back, drivers facing up,

1. Place a dab of "5 minute" epoxy (NOT superglue!) on the head of a light construction nail. Make sure to "wrap" the epoxy around the top of the head AND the behind the head so that once the glue cures it surrounds the entire head in a ball. The reason for this is you will be sticking it to the cap's dent, and then using it to pull the dent out - you don't want the nail to pull off and leave the glue on the dust cap.

2. Allow the glue to cure enough so that it is still sticky but formed enough that when you hold the nail head (very lightly) onto the center of the indentation in the dustcover it won't run. This also ensures enough holding power after cure, but not TOO much. You don't want it stuck on there like you're planning on towing a boat with it :)

3. Place the sticky nail into the center of the dent, and hold it there for a couple of minutes - until the glue has cured a little more. If the speaker is placed on it's back, you should be able to "balance" the nail there so you don't have to physically hold it for the next 10 minutes.

4. When the glue has cured enough (probably about 15 minutes after mix - not to rock hard), carefully pull the dent out and place the speaker back in it's normal upright position.

5. The nail and glue are removed by heating the middle or even opposite end of the nail with a cigarette lighter or candle until the whole nail gets hot enough that the glue on the end becomes very soft. It should then just pop or peel off pretty easily. (Now you can see why you want the glue "balled" around the head.)

6. Any trace amount of glue left on the cap should be removed with Goo Gone, Goof Off, or acetone, etc. IMMEDIATELY - but test the cap for "colorfastness" first in a very small spot.

I would recommend practicing this technique once or twice on something else to get your timing down beforehand.

Hope this helps - or at least provides fodd for thought.
I would call Bill at Miller sound and have Him rebuild them . I had the # once but can not seem to find it now . He does great work and they would be better than new when He is done. Marc
Have you tried the vacuum / sticky tape approaches? Many metal domes seem to be a very thin foil, that is quite flexible.