#21 Hornby Class 20: Look-over, plus TTS Sound Bass Reflex Speaker & Custom Cab Wall Installation

In this video, I take a look at Hornby's Class 20 locomotive in Technical Services livery, install a TTS decoder with bass reflex speaker, and fit a custom-made wall between the cab and the engine compartment.

Hornby's Class 20 is mainly based on Lima's older model. It's got a decent can motor driving the front bogie (and no traction tyres - hooray!) and is a decent weight, but detailing is limited and there are no functional light.

There's a reasonable amount of room for fitting a DCC chip and speaker (unlike Bachmann's offering), and when paired with a speaker upgrade with better bass response, the TTS chip performs really rather well.

---

This is a 3-in-1 video: quick review, sound installation and custom cab wall. You can jump to different sections as follows:

00:14 – Taking a look at Hornby’s Class 20 locomotive
09:11 – Body removal and first look inside
15:00 – TTS chip & bass reflex speaker installation
29:12 – Cab wall installation

---

Specific items required for this project are:

Hornby TTS Class 20 Sound decoder
8ohm Bass Reflex Speaker
3D printed cab wall or plasticard

You can buy the bass reflex speaker here: http://s.aliexpress.com/JrAJBBfa

Various other tools and materials are required, including:

Soldering iron, solder & liquid flux
jeweller's screwdrivers
black tack
heat shrink
wire strippers
expo modelling saw
exacto knife
sandpaper
needle files, and
superglue

---

Download the cab wall 3D model STL file for free here: https://skfb.ly/6z8vx

If you don't have a 3D printer, you can buy a 3D printed version of the cab wall here: http://shpws.me/Qjr6

---

Thank you very much for watching.

Please comment, like, share and subscribe!

Visit us at: http://www.strathpefferjunction.com