Kone dust cap has turned concave

leen111 · May 11, 2024 at 12:03 PM

I have a Kone which has not been mounted in any cabinet for a while. I noticed the dust cap is concave but I think it should be convex. Does this affect the sound and if so is there anything one can do to make it convex again? It does not look damaged in any way. Thanks.

Antipodes · May 11, 2024 at 1:18 PM

Paper dustcaps can be made convex again with the aid of an old school vacuum cleaner. Just use the hose without any attachment and push it onto the middle of the paper cap and the suction will allow you to pull the cap back out to its original shape. You would need to get the fabric cover off the speaker to do it.

leen111 · May 11, 2024 at 8:25 PM

I gave it a go with the vacuum cleaner and it looks pretty good. The cap paper is a bit loose and slightly dented though so not sure if it is broken. Big thanks!

Antipodes · May 14, 2024 at 8:05 PM

Glad that worked for you. I had 58 on a mic stand tip over into the cap of my EV12L in a 1x12 and the vacuum cleaner popped out the dent and afterwards it was indistinguishable from new condition.