ESU 50337 LokSound XL 50mm (1.96") 8 Ohm Speaker

These speakers are the identical units to the Visaton FRS5 series of loudspeakers. The design is so unique that it does not seem to matter much whether or not you mount them within an enclosed cab or down-firing through the bottom of the locomotive or trailing car. Absolutely crystalline sound and perfect response for steam, diesel, or electric loco applications. The only speaker I will ever buy for my G scale applications.