Hello. I'm currently planning on installing a digitrax sound decoder into my Atlas U-33C. Does anyone know how to install this decoder and where and how to mount the speaker in the engine?
Freelancer with an interest in N&W, SCL, and other 70s railroads
It's been a while since I did my C 30-7, but I think it shold be similar. I replaced the OEM board with the Soundtraxx board making sure to get the right format I wanted for easy install. I put a 1.06" round HB speaker in the radiator area pointing up. I drilled out many holes for the speaker and weathered it so things blended. It sounds great. I did have to cut the speaker down in some areas.
The first thing I always do is remove the shell and check out what room is available and how things can be modified. Then compare to available speakers and board types.
Richard
I would recommend Soundtraxx for that loco over digitrax hands down.
They have a decoder available for that loco found here:
http://www.soundtraxx.com/choose/step3.php?t=ho&s=Atlas
They also have a installation guide for the B23-7 which should be similar to yours.
http://www.soundtraxx.com/documents/appnotes/Atlas%20B23-7.pdf
Springfield PA
Is the below your loco? If it is, then the light board decoder would work.
http://www.hoseeker.net/assemblyexplosionAtlas/Assembly%20Explosion%20Atlas%20U33C%2036C.jpg
I have a new Atlas GP40-2 with on board sound that has a different frame configuration and would not allow a lightboard type decoder. I would have to use a shrink wrapped decoder.
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.
According to Soundtraxx the Atlas board they make simply replaces the existing light board.