could the DM6SE have corrosion problems if installed in an indoor swimming pool?
Sorry for the delayed reply, but I needed to verify something first before providing you the information.
The DM6SE has stainless steel part (part of the bracket).
Over time stainless steel can be affected by choline and can even break.
During this ISE (2020) we introduced 5 new FreeSpace FS loudspeaker and in these loudspeaker no stainless steel is used. For swimming pool areas we advise to use the aluminium grills as the original grill can be affected (cosmetic) by the choline.