Andre,
I only use the PFM speakers as they are very high quality and give the bass sounds. They are difficult to find now but can be found on ebay.
You can make your own sound boards. I go to radio shack and get 47UF capacitors (two go in series) and a 473J (green capacity) in series with the cam contact.
Another hard part to get is the PFM choke (RF trap) but they do show up on ebay.
I also get a bridge rectifier from radio shack for the 1.5 v bulbs (LEDS).
I have some extra cams if you need those ($3.50 each plus a buck for shipping). These cams came from Tenshodo and are what they used on their engines.
I put an X over one axle on a driver and pull the driver off and put the cam on and then, re-insert the driver. A wheel puller is best for doing this. You will also have to cut a slot in the retaining plate that holds the drivers to the frame to make room for the cam.
I've done so many of my engine that I'm low on speakers and chokes (RF traps) and will have to wait until I find them for sale on ebay.
Below are pictures of parts needed plus schematics. The one picture is of the instructions that come with a LTM kit so if you buy one of those, it actually shows the parts for a sound system.
The LTM doesn't include a speaker. You should be able to use a speaker for DCC.
Sam
