My sons and I are just getting into O-Guage railways. We have a Lionel 2-8-4 Berkshire steam locomotive that my kids adore but it requires O72 curves to safely operate (with a 3 and 5 year old on control) so I have acquired a complete Amtrak train set but the horn in the MTH loco is horrible! I would like to know if it is possible to install a better sound board? The box states that it will accept "plug in Proto Sounds" but I cannot find any source for the PS1 system (we are operating with only a Z-4000 transformer). I don't want to get into remote control systems yet.
I found Electric Railroad.com and they have a Railsounds upgrade for a Dash 9 locomotive that sounds great. But is it possible to install a Lionel based upgrade in a MTH Rail King loco?
Thank you for any advice you can offer.