After my experience with Blue Line dual-decoder installs and all of the problems it created, I wouldn't even consider doing anyting like this. A QSI Revolution decoder for an Athearn Genesis model is an exact replacement for the Athearn light board.and gives you both excellent sound and motor control all in one.
Probably not. And the obvious question - why? The top 3 sound decoders: QSI Revolution, Soundtraxx Tsunami, and Loksound - all have top-notch motor control to go with the sounds. And with only 1 decoder there will be more room for a larger speaker. You want to fit the largest speaker and enclosure you can for the best sound.
--Randy
Modeling the Reading Railroad in the 1950's
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I have an Athearn Loco that is DCC Ready. Can these loco's have one motor function only decoder with a JST plug plugged into the circuit board and a SEPERATE sound decoder plugged into the circuit board with a 8 pin-plug?