Iron filings in a speaker

plasticene has worked for me once or twice. also vaseline on a card followed by alcohol to get the grease out

its possble that compressed gas/air might blow it out as well.

I assume the spider is still intact?

A neomibium (sp?) (rare earth) magnet on a stick might be of some use to get out the more accessible bits.

In message , "Dave Plowman (News)" writes

If you have access, try a conventional sewing needle. The metal particles may prefer the induced magnetism at the needle point.

Never tried it with a speaker magnet but it used to work with moving coil instruments when I was an apprentice:-)

regards

Neodymium?

Something like that!

in a nut shell. IF its stronger than the speaker magnet ..

If it's a good speaker with a very powerful magnet it might be time for a new speaker.

OO0oo I wouldn't put them in a nut shell, someone might swallow them. One wouldn't be so bad, but two might cause a nasty obstruction.

I have visions of a rare earth magnet getting ripped through the cone on its way to sticking forcefully to the speaker magnet ;-)

Or squashing a finger.

Agreed, and just put it down to experience, unless you're prepared to muck around with a pair of sharp tweezers for a fortnight or so...

Fortunately modern speakers seem to have a sort of protection of the voice coil at the front by way of a sort of mini dome.

Coincidentally (and tangentially) I attended a very interesting talk yesterday, presented by a young man who has just completed his PhD at MIT. His topic was the design of small powerful linear motors using permanent magnets - effectively, they use sophisticated voice coils. the magnets are stacked with four different orientations in a way that traps the magnetic field, and the current in the coils is controlled to preserve the right phase relation with the magnetic field. The big issue is getting rid of the heat generated in the voice coil, and to facilitate this his little motors have close tolerances - he aims for 10 microns at operating temperature. You wouldn't want any swarf in there.

An aspirin sized one is strong, but not that strong.

You cannot, its buggered I'm afraid. The mereest sniff will rub it away, and damage it. it cannot be recentred once this has occured. Brian

rubbish

Rather stupidly, I left the rear speaker in place when the old Rover was

Was the work done by a pro body shop? If so take it back and make it their problem.

Mike

Not possible with this construction - common on car speakers - where the tweeters are mounted on a central post.

I would normally agree - but the quote involved me removing and replacing any necessary trim. For some reason I forgot the speaker even although it was exposed by my removal of the other trim and very easy to remove at that point.

The EU will solve that according to the other thread, by requiring you to remove your unapproved aftermarket speaker anyway. Was the new wing approved by Rover? What about the paint?

;-)