Hello
A few ,months back i opened my SL-6 box, to check on the driver as it was rubbing, anyway to my shock there was a lot of fuzz white stuff around , initially thought it was the box stuffing as its white and dusty. I cleaned them up and boxed the drivers, and the tweeter magnets were the same.
They dont look as bad today, however i see some rusts spots ( as per photos). I hear of products like CorrosionX etc. I thought a clean up and paint would be enough? I have no idea. Some anti paints out there, or plain non water based.
Upon removing the copper domes, i was shocked there was corrosion there, up to the tweeter itself. I was afraid to mess with the cotton pad or whatever it is. I clean it up the best i could.
I have oil based paints, and water based on hand at home right now., as i said early, not sure if that would help in the long run. Very humid here in summer and there is no a/c,, and thinking the celestion were a close speaker system it would be immune to such a problem. Part of the old gaskets for the drivers has worn in places and its possible the cabinet might have some leak, i am thinking to use some desiccant to keep it in there?
woofer - was worse than fhis the first time i saw it
This is how the woofer and tweeter backs looked but worse, when first saw them, this is the front of the tweeter
scraping it off, and a protective cup over tweeter.
A few ,months back i opened my SL-6 box, to check on the driver as it was rubbing, anyway to my shock there was a lot of fuzz white stuff around , initially thought it was the box stuffing as its white and dusty. I cleaned them up and boxed the drivers, and the tweeter magnets were the same.
They dont look as bad today, however i see some rusts spots ( as per photos). I hear of products like CorrosionX etc. I thought a clean up and paint would be enough? I have no idea. Some anti paints out there, or plain non water based.
Upon removing the copper domes, i was shocked there was corrosion there, up to the tweeter itself. I was afraid to mess with the cotton pad or whatever it is. I clean it up the best i could.
I have oil based paints, and water based on hand at home right now., as i said early, not sure if that would help in the long run. Very humid here in summer and there is no a/c,, and thinking the celestion were a close speaker system it would be immune to such a problem. Part of the old gaskets for the drivers has worn in places and its possible the cabinet might have some leak, i am thinking to use some desiccant to keep it in there?
woofer - was worse than fhis the first time i saw it
This is how the woofer and tweeter backs looked but worse, when first saw them, this is the front of the tweeter
scraping it off, and a protective cup over tweeter.
FYI/FWIW/YMMV: Combining cleaning vinegar and baking soda is the best homemade rust remover and in some cases I've found that adding a fine mist sprayer to a bottle of hydrogen peroxide is a great general purpose cleaner, especially with baking soda.
Hey Macc, I acquired a pair of KEF Reference 103.2's about a year ago and they also had that white deposit on the back of the drivers. I gathered it was something to do with zinc plated parts, but I don't know for sure. I just wiped then with Inox MX3 and left them as they were.
These are also sealed box speakers, so maybe it is from some kind of reaction from chemicals inside the box...like outgassing from the materials and glues etc. Or as you suggest, just humidity, although it's not that humid here in Perth.
These are also sealed box speakers, so maybe it is from some kind of reaction from chemicals inside the box...like outgassing from the materials and glues etc. Or as you suggest, just humidity, although it's not that humid here in Perth.
@GM
Thank you, i have vinegar, from what ive read cleaning is 1% more. I have a bottle of hydrogen peroxide 3%. I run the paste on the speaker drivers and then? wipe off with a damp cloth and any paint or just some oil as Stuey mentioned afterwards
@Stuey Thank you, Same sort of speaker , being KEF, so i assume the same backing. Its not a nice side the white deposits. You got as much as the corrosion stuff off? then wiped with Inox MX3. Maybe over time they react to something in the box,, the old inductors maybe, the caps I replaced with neutral sounding ones - reference was Humble Capacitor website reviews.
I am from the Gold Coast, so summer can be humid, especially since windows are opened due to no air con. I store them on top of my Coral CX5 speakers ( maybe should check them also) with a cotton sheet over them.
Thank you, i have vinegar, from what ive read cleaning is 1% more. I have a bottle of hydrogen peroxide 3%. I run the paste on the speaker drivers and then? wipe off with a damp cloth and any paint or just some oil as Stuey mentioned afterwards
@Stuey Thank you, Same sort of speaker , being KEF, so i assume the same backing. Its not a nice side the white deposits. You got as much as the corrosion stuff off? then wiped with Inox MX3. Maybe over time they react to something in the box,, the old inductors maybe, the caps I replaced with neutral sounding ones - reference was Humble Capacitor website reviews.
I am from the Gold Coast, so summer can be humid, especially since windows are opened due to no air con. I store them on top of my Coral CX5 speakers ( maybe should check them also) with a cotton sheet over them.
I didn't bother too much about the white dust as I've seen that on zinc plated parts before (not speaker parts). I think it's zinc hydroxide, the zinc version of rust on iron and steel, iron oxide. It shouldn't affect their operation. I just used the Inox to put a bit of an anti-corrosion coating on them. That Inox product is like a better version of WD40, with the benefit of not smelling horrible.
Thanks Stuey. They are zinc coted, least its not Cadmium, which ive read in another forum is quite bad for us. The speaker gaskets have worn, so to be more airtight will get some PE foam from Bunnings. The brand is below. As for the boxes? wonder if i should put some pva glue or silcone to seal them more, though probably are fine?
Inox with just a rag gently applied around tweeter and backs of both woofer and tweeter. Yes WD40 is smelly as is 2-26 CRC which i use to lube the amps pots.
https://www.bunnings.com.au/moroday-24-x-3mm-x-10m-grey-pe-foam-tape_p0077670
Inox with just a rag gently applied around tweeter and backs of both woofer and tweeter. Yes WD40 is smelly as is 2-26 CRC which i use to lube the amps pots.
https://www.bunnings.com.au/moroday-24-x-3mm-x-10m-grey-pe-foam-tape_p0077670