I undertake DCC sound fitting, generally using Zimo decoders and my own speaker enclosures but also smaller proprietary speakers if the situation dictates it.
I have a YouTube channel called 'Jinty's Videos' where a lot of my finished articles can be heard.
Please consider subscribing to my channel to receive updates when I post videos.

---

Heljan Class 37/4, 37413 "Loch Eil Outward Bound"

This is a Heljan class 37/4 locomotive fitted with a Zimo MX696KS sound decoder and a large stay alive capacitor. I have fitted two 36mm speakers in the tanks making the tanks themselves a speaker chamber. I've also fitted a reflex tube from the tank to the inside of the body to enhance the bass properties.
Lighting is F0 for directional markers and headlights and F10 for directional tail lights. Therefore the tail lights can be extinguished prototypically whilst pulling a train.
All that's needed now is a decent video camera and cameraman!!!