How to clean or maintain the speaker outer surfaces ?

[soamz]

Can we simply use a vacuum cleaner and throw mild watery sprinkle and then use a micro fiber cloth ?

 

[kanwar]

How about Grease and Tar oil to lick the dirt off

 

[denom]

I use this:

 

[ghatgepatil]

Provide the air pressure rating too ! Else the woofers 'might' get perforated. Air pressure of 50 psig would be sufficient. Don't exceed that please.