I have an Atlas Classic GP-7 in Ho that I would like to convert to DCC with sound. Has anyone attempted this and what would be the correct decoder & speaker to use for the project. I have a list from Digitrax that list several decoders for pre-2003 units (DJ123D) and 2003 & later units (DH123P & DZ123PS).
Any help or suggestions would be appreciated.
M.C. Richmond
Several companies make "drop-in" board replacement sound decoders. The advantage of the sound board replacement is it only takes up the same amount of space as the regular sound board, making it a little easier to fit in a speaker. I've found a 1/4" by 1/2" oval speaker and enclosure will fit the engine.
Also, for some reason the light board Tsunami is usually cheaper than a standard (9-pin / "hardwire") Tsunami.
I've done a couple of GPs with the now-discontinued Soundtraxx "LC" lightboard decoder. Sound isn't up to current standards, but it's good. I have a similar Atlas RS-11 that I installed a Tsunami in, that has really great sound. I haven't installed a QSI sound decoder but I have an NW-2 with a factory QSI sound and that sounds good to me too.