Kit: Zimo MX649N and Zimo SugarCube speaker
A floating 6pin DCC socket is provided in the boiler, similar to other DJM steam models...
However, in the J94, there is enough length behind the boiler door for a direct plugin sound decoder, the MX649N.
A standard Zimo 9mm SugarCube speaker also fits in the boiler, with the decoder just slotting in above it.
Photos courtesy of Paul Rogers.