Drivers and how to clean them: Notes from ScanSpeak

To clean the dust off of your woofers: Tchaikovsky 1812.

I've no need to dust speakers, since I don't give them a chance to collect such. :)
As for any other surface other than horizontal....

We live near a rail yard that services a concrete plant.  They regularly 'dust' the interior of hopper cars that deliver powder cement to said plant.

Previously, they applied buzzy 'vibrators' to the cars' sides to knock off what would 'stick' to the interiors of the hoppers.  Ran around 300hz, and somewhat annoying.  But only during the day...

Made sense....if left on and in the hoppers, and what with day/night temp and humidity changes concrete dust would 'glaze' the stainless interiors.

Not good product for commercial projects or your driveway, noooo...

A month ago or so, they switched to a 'shaker' that creates a 'bass vibe' (15hz?) that rattles windows an 1/8 mi. away.  All the local 'car bassers' have got to be jealous....but rail car hoppers are welded vs. car parts are bolted for the most part....

Nothing like having your ride have a Rapid Unplanned Disassembly on the interstate... ;)

I saw a interview with a Dynaudio engineer and he recommendsled treating speaker surrounds with a product called Sonax... It was like $15 on Amazon, I used it on my surrounds and it worked great, my speakers are pretty old and the rubber was getting a little dry, now they soft and shiny and very pliable, it did improve the sound too.

Sonax is from a German company, it’s for restoring dried out rubber on vehicle door seals I think, but it works great on speaker surrounds... I was just careful not to get it on the area where the rubber meets the woofer cone just in case it would cause the glue to fail, but I don’t think it would, I was just being extra careful. I cleaned the woofers first with a damp cloth and dried them.

Don't you put the grill covers on the speakers between uses?