Speaker dust cap loose.

[thiswaythatway]

I bought a Redback off of Reverb and after installing the speaker had a nasty high pitched rattle. I took it out of the cab and laid it down facing up and when I hit some low notes I can see the dust cap has a separation where it should be glued. Is that something a tech needs to do? What kind of glue is used on speakers?

 

[Six Stringer]

Some say superglue. I would use the gel sparingly.

Others say Aleene's tacky glue. It's an all purpose craft glue.

 

[paulyc]

There are speaker recone places online that sell exactly the right glue (and dustcaps if you need one) for various brands of speakers, I fixed a few Greenbacks I bought this way. Super easy.

 

[Exo-metal]

I used a glue gun and have had no issues.

 

[thiswaythatway]

The dust cap is still on pretty tight, only comes loose with some volume and bottom end. Do I use a razor blade to lift the cap so I can get some glue in?

 

[Six Stringer]

I would not use a razor blade. Use a toothpick, an index or business card. Bend a corner or carefully break the toothpick end and use either to gently lift.

 

[Scumback Speakers]

Easy fix. Get some white Elmer's glue, and two toothpicks. Lift the dust cap where it's separated with one, then put a small drop of glue on the end of the other toothpick and place it on the old glue line where it's loose. After that place a couple of heavy metal washers or some heavy coins on the top the dust cap to hold it down in the glue. After 5-6 hours of drying you should be good to go.

Yes, I've done this several times to old Celestions to fix this exact problem. Good luck!

 

[thiswaythatway]

Just regular Elmers Glue?

 

[psychodave]

Just regular Elmers Glue?

Yes, simple Elmers white glue.

 

[Markedman]

Put a shot glass upside down on the cap with the speaker facing up after gluing.

 

[thiswaythatway]

Thanks all!

 

[Scumback Speakers]

Put a shot glass upside down on the cap with the speaker facing up after gluing.

Do not do this.

It will distort the dust cap out of round if it's too heavy. All you need is 3-4 quarters placed on the lip of the dust cap where it came loose.

 

[Markedman]

I got my information here - http://www.soundspeakerrepair.com/mm5/m ... _Code=INST

You're the expert for sure but I watched some other videos and, well this guy uses a large metal nut, I mean huge - https://www.simplyspeakers.com/speaker- ... tions.html

Dust caps are sometimes frail (1968 greenback) and sometimes robust (EVM12L) so just be mindful of the material.

 

[Scumback Speakers]

Here's how I weight down a new large dust cap. Small dust caps are the same. If you repair yours with the toothpick/Elmer's glue method, you can weight down the loose edges on the dust cap lip by leaning them towards the dust cap so they stick up almost vertical.