sd40 sound compatible MTH

Gary, All Lionel and MTH with sounds can run in conventional with sounds.  The bell and whistle can be activated.  There are more specific sounds that can only be played in command.

I am not sure what sound compatible means.  If a system has Lionel controls inside and is upgradeable, that normally means that command control and command control sounds (RailSounds) can be added via Lionel add on parts.  For MTH a PS-1 bell or whistle only system could be upgrade to QSI sounds back in the day, but that system is obsolete though some parts are still available.

If your buying new or recent MTH it either is PS-2 or PS-3 full command, or a LocoSounds conventional engine with sounds, or in some cases a Basic Reverse Unit model with bell and whistle.   G

G

 So if I'm reading this correct a ps-2 or 3 rail sounds can only be activated through command and ps-1 rail sounds can be activated conventionally.

Many of the effects on MTH PS2/3 locomotives will run from a conventional transformer.

For instance, from one of the manuals...

gunrunnerjohn

Thanks this was very helpful, Now I can look for a Santa Fe MTH SD40 with PS2 or 3, can't wait 

There are typically some good deals that occasionally come along on MTH stuff, good luck in your quest.   Keep checking the for-sale forum here.

Thanks, always do and have a table in Wheaton in October so eventually I'll be putting one on the layout before to long and thanks again for all the help.