getting dents out of dust caps!
Moderator: Dave Mudgett
- Dave Stagner
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- Location: Minnesota, USA
getting dents out of dust caps!
Last night, while setting up for a gig, my bandmate managed to drop something on my JBL K120 dust cap while loading in,, putting a second dent in it. Does anybody have a way of getting dents out, short of replacing the dust cap or reconing? I still have the original cone and am loathe to recone it, and changing the dust cap seems scary. I have it in a Jerry-style 1x12 cab, so the dents are visible.
It's not the end of the world and I can live with the dents, but it'd be nice to fix them if I can without major surgery to my favorite speaker!
It's not the end of the world and I can live with the dents, but it'd be nice to fix them if I can without major surgery to my favorite speaker!
I don’t believe in pixie dust, but I believe in magic.
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- Larry Dering
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I don't know if your's is vented in the back of the magnet but if so I have done it. There are some who just use tape to stick on the center and slowly lift it. I seen others use a shop vac with a rubber end and suction. Gotta be careful with that. I used the blower side and a hose carefully blowing on the hole through the magnet. No need to get a tight fit or you may blow it out too far.
- Larry Dering
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- Dave Stagner
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Re: Here's a couple ideas
Thanks! I might try that paper towel tube method. I’ve tried tape already and it didn’t work, and I’m afraid of using the vacuum trick.Larry Dering wrote:/viewtopic.php?t=208982&highlight=speak ... entre+dent
I don’t believe in pixie dust, but I believe in magic.
2019 Excel Superb S-11
1967 ZB D-10
1990 OMI Dobro
Recording King lap steel with Certano benders
2019 Excel Superb S-11
1967 ZB D-10
1990 OMI Dobro
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- Larry Dering
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- Ken Jameson
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Dents
I have had good luck with
Using tape.put it over the dent
and slowly pull it upward.
I have fixed my own D 130 that way.
Using tape.put it over the dent
and slowly pull it upward.
I have fixed my own D 130 that way.
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- Stuart Tindall
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The simplest and best fix?
Since almost nobody's really impressed with aluminum dust caps anymore (they're kinda like those fake portholes and little air diverters people stick on their cars), mask the cone and spray the dust cap with flat-black spray paint. That way, nobody will be able to see that it's dented.
Since almost nobody's really impressed with aluminum dust caps anymore (they're kinda like those fake portholes and little air diverters people stick on their cars), mask the cone and spray the dust cap with flat-black spray paint. That way, nobody will be able to see that it's dented.

- Jerry Overstreet
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Pretty thin stuff. If it's just a mild dimple, masking tape, frog tape, painter's tape usually does a fair job. If there's a crease, it's nearly impossible to get it back to perfect.
I've not had much luck with the vacuum and just fair with tape.
Mine have all been BWs where the magnet can be removed and just gently push the dent out from behind with your finger, but I believe that's not practical with JBLs.
FWIW, www.simplyspeakers.com or perhaps others, sells a replacement dust cap. It's pretty easy to replace if you're careful and handy with a hobby knife as it's not necessary to recone the entire speaker just to replace the dust cap... They also have the adhesive and offer a youtube video tute on the installation
That's probably what I'd do if it were of great distraction, annoyance to me.
I've not had much luck with the vacuum and just fair with tape.
Mine have all been BWs where the magnet can be removed and just gently push the dent out from behind with your finger, but I believe that's not practical with JBLs.
FWIW, www.simplyspeakers.com or perhaps others, sells a replacement dust cap. It's pretty easy to replace if you're careful and handy with a hobby knife as it's not necessary to recone the entire speaker just to replace the dust cap... They also have the adhesive and offer a youtube video tute on the installation
That's probably what I'd do if it were of great distraction, annoyance to me.
- Dave Grafe
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Quality gaff tape carefully pressed into the dent and then quickly pulled back has fixed many a dust cover. It's nondestructive so can be repeated to get a complete fix unless the aluminum is badly creased. If the tape method doesn't work the dome can be carefully cut out and a new one glued in place.
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- Brian Lenherr
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Dent
I’ve had luck with a toothpick and hot glue. Break the toothpick clean so one tip is flat (not sharp) but you have plenty of length. Put some hot glue on that flat part - a decent little glob. Put that in the middle of the dent. Let it dry and cool. Pull gently.
Works for me every time.
I wouldn’t do this on a paper cone - just aluminum.
Best of luck!
Works for me every time.
I wouldn’t do this on a paper cone - just aluminum.
Best of luck!
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Dust Cover
I used my shop vac to suck the dent out of one of my speakers! works well!
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