hello,
I bought an old phillips speaker from a trading site and bench tested it today to find it has a rubbing voice coil. it is the same type as in the photo. is it possible to remove the magnet, clean out the grooves it and re-position it to stop the rubbing or would this be a waste of time and should i just try get my $40 back and by another speaker? thanks
I bought an old phillips speaker from a trading site and bench tested it today to find it has a rubbing voice coil. it is the same type as in the photo. is it possible to remove the magnet, clean out the grooves it and re-position it to stop the rubbing or would this be a waste of time and should i just try get my $40 back and by another speaker? thanks
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The seller should refund most or all of your money, and let you keep it.
That way, he won't have to pay the return shipping on an item that's not salable.
The beauty of old Philips speakers (including your model, the 9762M) is that the magnet is removable.
Simply remove the three nuts you see in your photo, and pull the magnet straight away from the basket. You can then clean the gap and re-center the coil when you put the magnet back on.
Just be slow and methodical. You don't want to crush the coil when you put the magnet back on (the magnet is strong, and will be attracted to the basket). And there is no glue holding the magnet structure together, so any drops or jolts and you might end up with a closed gap.
Simply remove the three nuts you see in your photo, and pull the magnet straight away from the basket. You can then clean the gap and re-center the coil when you put the magnet back on.
Just be slow and methodical. You don't want to crush the coil when you put the magnet back on (the magnet is strong, and will be attracted to the basket). And there is no glue holding the magnet structure together, so any drops or jolts and you might end up with a closed gap.
I made it sound much harder than it is. Believe me, it's easy and well worth it. I clean the gap and re-center all my Philips speakers.
Wise. You've got nothing really to lose, so given that these units are relatively easy to work on, always worth a shot. 🙂
hi,
I repaired the speaker with out any problems before the voice coil got damaged, I had to cut a small groove in the top of the 3 bolts just above the nuts with a dremel so the bolts could be held with a small flat head screw driver to stop them turning.
Note....... you have to be careful because the bolts can contact the spider as they are loosened if you press down on them.
So once you have the bolts loosened several turns it is best to hold the bolts just below the nut lightly with some long nose pliers to finish removing the nuts.
The problem was a rust spot on the steel that sandwiches the magnet. it must have sat round not used for a while.
Also I was wondering if any one knows how these speakers were originally supported in the cabinets because the magnets seem extremely heavy for what the strength of the baskets appear to be. were the magnets supported as well to take some of the weight?
I repaired the speaker with out any problems before the voice coil got damaged, I had to cut a small groove in the top of the 3 bolts just above the nuts with a dremel so the bolts could be held with a small flat head screw driver to stop them turning.
Note....... you have to be careful because the bolts can contact the spider as they are loosened if you press down on them.
So once you have the bolts loosened several turns it is best to hold the bolts just below the nut lightly with some long nose pliers to finish removing the nuts.
The problem was a rust spot on the steel that sandwiches the magnet. it must have sat round not used for a while.
Also I was wondering if any one knows how these speakers were originally supported in the cabinets because the magnets seem extremely heavy for what the strength of the baskets appear to be. were the magnets supported as well to take some of the weight?
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I'm glad the repair worked! Well done adding the slots to the bolts.
To answer your question: I've never seen a pair of Philips speakers with a magnet support, and I've seen a lot of Philips speakers.
To answer your question: I've never seen a pair of Philips speakers with a magnet support, and I've seen a lot of Philips speakers.
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