Author Topic: "letting the sound out" of an Atlas Trainman GP38-2  (Read 514 times)


  • Fireman
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  • Posts: 29
"letting the sound out" of an Atlas Trainman GP38-2
« on: March 19, 2019, 10:46:49 PM »
I love my atlas locomotive, it is such a smooth runner and has modest detail which makes handling much easier!  Installing a Railpro LM-3 appears straightforward in this locomotive.  I have found example installs and all show installing the speaker over the rear truck.  Since the fans are solid, the installers are boring a hole through the rear weight to provide sound access out through the bottom of the loco.  See photos 6 and 7 in the link below.

Are there any specifics I need to know relative to boring through the rear weight?  I am wondering if sound quality varies depending on the shape and dimensions of the hole?  I am leaning toward a single rectangular cube speaker.  A larger speaker may also fit. Thanks for any assistance!


  • Engineer
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  • Posts: 92
Re: "letting the sound out" of an Atlas Trainman GP38-2
« Reply #1 on: March 20, 2019, 07:55:17 AM »
There should be no problems boring through the weight that I can see. After seeing this post I think I might add some modules to my Atlas GP39-2s