I'll be no help on the stain, but I've always wondered if the fumes of volatile stain would attack any part of the speakers or networks? Is it advisable to carefully take the midrange, tweeter and networks out and store them elsewhere, while blocking off the pathways to the woofer while re--staining? Just a thought from OCD land.
Gary R Camp
Main room: 2- 1982 Klipschorns with K-401 fiberglass mid horn upgrade (1987), and AK-4 Klipschorn stock upgrade (2006), Belle Klipsch (2005) center channel, 2 NAD C- 2 72 ss 150 wpc stereo power amps (not bad), NAD T163 home theater type pre-amp (Achilles heel: no way to avoid transmitting slight hum to Khorns), Heresy II surround speakers driven by 1/2 NAD C-272 and a Yamaha 135 wt amp, NAD C-542 CD player, Magnavox DVD player, TV monitor. Klipsch RSW-15 subwoofer, for movies only.