ESU LokSound 5 DCC 21-MTC decoder
DCCSound Premium speakers (S/42/GM)
DC model as received:
Equipped with a LokSound 5 decoder and DCCSound's Premium speakers:
First, the factory speakers are removed along with the DC dummy plug. Then an ESU LokSound 21-MTC V5 decoder with GM12 sounds is plugged in.
The twin speakers are soldered to the speaker outputs on the decoder.
Below is a similar installation, this time in a Trainorama S class model. The 21 pin version's motor connections seem to have been wired opposite to one another, such that the value of CV29 needs to change.
WCR S class with latest speakers, featuring larger enclosures:
4201 with an 8 pin decoder: