Hello everyone! I have a pair of SDA1 Polk speakers. Bought them in 1987. They need a cleaning and I don't want to do without getting advise. There seems to be a white mold growing on the bass drivers, not a lot, but there's something there. What is the best solution to use for cleaning. I noticed an earlier post that said to use Windex. That seemed harsh and I didn't want to use it until I double checked.
Thanks for your help.