This loudspeaker module is suitable for large tenders of gauge H0 or OO or models of gauge 0. Its built-in passive radiator, in conjunction with the built-in broadband loudspeaker, results in good bass reproduction without neglecting the highs and mids. Especially for diesel or steam locomotives, this module is a real alternative for those who like deep bass but are not dependent on extreme volume. The speaker fits perfectly with our LokSound 5 or LokSound 5 L decoders.