Installing a Hornby TTS sound decoder into a Bachmann 4MT loco with a YouChoos sugar cube speaker 

We've installed a few sound decoders in various oo gauge model railway locomotives now, but this time we're trying something different and substituting the supplied speaker for a YouChoos sugar cube style speaker so that we can fit the speaker in the boiler rather than the tender. We filmed the process for your enjoyment.
Loco: Bachmann Standard Class 4MT 2-6-0 number 76058
Sound Decoder: Hornby TTS J36
Speaker: YouChoos Sugar Curve 7
0:00 Introduction
0:02 Installing a Hornby TTS sound decoder in a Bachmann BR Standard 4 locomotive
0:08 Introduction
0:56 What will we need?
1:27 Taking it apart
4:28 Swapping the decoders
4:44 Testing the new decoder
5:32 Swapping the speaker
7:31 Testing the replacement speaker
8:05 Soldering the replacement speaker 2
9:16 Reassembled test
10:11 Demo of some of the sounds
10:35 Let's give it a run