Under the reference ESU 50336, here is a Visaton SC4.7ND loudspeaker measuring 41x70 mm, for lokSound scale G 1/22.5th., with a power 2 - 4 watts.
Introduction to the manufacturer ESU:
Model train manufacturer ESU specialises in designing products derived from model railways. The brand offers a wide range of electronic accessories for digital systems (adapters, power supplies, decoders, cables, digital control units, etc.). ESU also designs some railway equipment (locomotives, carriages, wagons, etc.) in HO 1/87, N 1/160, TT 1/120 and other scales.
