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Interesting concept. Two things immediately concern me. First, is that I wouldn't want "room filling sound", and second, for steam engines, I even dislike speakers in the tender as the sound in a steam engine comes from the front of a real locomotive. Installing the sound in a car behind the engine makes the sound even more disconnected - especially when viewed up close.
Not putting down your efforts .... just not my cup-o-tea ....
Mark.
¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ
Thanks, Mark. Guess you have to be there (here). Stop by some time when you are out on the west coast and I will try to convince you. Or if you have the chance, stand beside a real steam loco pounding by and try to imagine a model of it in a room....how much sound would be real? Take a look at my other videos on this topic if you wish. But you are right in one respect. When I put the diesels through the subwoofers my wife doesn't like having to straighten all the pictures back on the walls upstairs.