As I needed to repair one of the bass/mid drivers from my recently aquired Philips DSS930, I wondered if anyone tried to create diy shorting rings. I'll try it with silver paint, typically used to repair car rear window heating.
I've tried to cover only the portion of the pole piece above the air gap...
Just curious if there's any experiences already.
I've tried to cover only the portion of the pole piece above the air gap...
Just curious if there's any experiences already.
Attachments
A couple of turns of copper wire wound on glue with silver paint over the top? How was the silver paint, the reviews on amazon are mixed to say the least.
I would use conductive shielding paint that guitar builders use to shield the control cavities of electric guitars:
Conductive paint
Conductive paint
The silver paint itself is undisputed (if applied correctly - in multilayer paintings) but not measured myself. I'm not able to perform milliohm meaurements...
I own those slug repellant copper tapes, but I doubt the result will be any better than the multilayer silver paint, given that one need to securely connect that copper tape with solder - and that adds other problems...
I own those slug repellant copper tapes, but I doubt the result will be any better than the multilayer silver paint, given that one need to securely connect that copper tape with solder - and that adds other problems...
> copper "washers" - those are in fact sealings. Yeah, I had those in mind too as they come in handy with inch ratings, but I'm not sure about the metrics, as I thought the shorting rings should cover the area beneath (no able to do without taking the whole magnet assembly apart) and above the T-pole structure. With the silver painting I'm able to do that. I've taken apart some speaker chassis factory equipped with shorting rings (some Audax and Sica), and they all had the complete area covered above the T-ring.
Last edited:
Just keep in mind that the iron used in the magnetic circuit does also have some shorting properties by itself already. So whatever you are going to use must have much better conductivity than iron to be of any use. Therefore I doubt that conduictive paint for instance would help a lot.
A single loop of copper wire in- and outside of the loop couuld be tried. Or a washer like boswald mentioned.
Have a look at this one (you can click the picture to enlarge):
Flex Units Loudspeaker Drivers
To be honest it is not just a ring above the pole-piece it is actually a copper cap. The closer to the gap the more it helps.
Regards
Charles
A single loop of copper wire in- and outside of the loop couuld be tried. Or a washer like boswald mentioned.
Have a look at this one (you can click the picture to enlarge):
Flex Units Loudspeaker Drivers
To be honest it is not just a ring above the pole-piece it is actually a copper cap. The closer to the gap the more it helps.
Regards
Charles
Last edited: