These DIESEL LOCOMOTIVE SOUND SYSTEM's were designed for the model railroader utilizing magnetic trips of the Horn and Bell. Each activation of the Horn triggers a different prototypical play pattern of the Diesel Locomotive's Horn. The Bell activates by tripping the Bell to play. The second trip will signal the Bell to turn off. Horn triggers can occur during Bell triggers as well. This system can operate from track power and/or battery power. It will automatically adjust the diesel prime mover rpm with changes in track or motor voltage. Sounds produced are explained for the standard DC diesel sound systems, Dallee Catalog, page 10. These systems can be mounted in the engine or car (with track pickups) or they can be utilized in a stationary mode with the Horn and Bell being triggered by either the train carrying a magnet or other momentary switch input. The sound systems are packaged with two reed switches. Appropriate speakers can be found on the Speaker page of this site. To make life easier, we made available the more appropriate Diesel Horns with the various prime movers. All item 9xx type sound systems listed operate via the automated Horn play patterns. Diesel and Electric systems available are listed below as well as our price schedule. They have the same physical appearance as the standard DC sound systems.