ESU 58429 LokSound 5 decoder
DCCSound Premium speaker for IDR DERM
First, the couplers must be removed in order to lift the body up and off from the chassis.
For DC factory models, the 21-MTC DC board is removed and the decoder fitted to the 21 pin plug on the model's lighting board.
For DCC models, which come with a LokSound 5 decoder, the next step is remove the factory speaker, which uses a 11x15mm driver.
The DCCSound speaker is positioned in place and sits o top of the lighting PCB.
The two wires are then soldered to either the speaker tabs on the decoder or to the speaker tabs on the lighting board.