The is the first in a two-part series on upgrades and improvements that can be made to a Hornby Class 37 locomotive with TTS sound.
In the second video, we’ll look at adding stay-alive capabilities to help keep the running smooth and steady, but for now, we’re upgrading the stock speaker to something a little better…
The steps outlined in this video are applicable to all TTS sound decoders (and many others). The only differences being that in some locomotives – not least most steam locos – the space inside can be rather limited and you may not be able to fit such a large speaker into the body.
Remember that in all cases where a Hornby TTS decoder is used, you must also use a 8 Ohm speaker (or two 4 Ohm speakers in series, adding up to 8 Ohms). This is different to LokSound V4 decoders, which can use a 4 Ohm or 8 Ohm speaker.
Speaker impedance and decoder specifications for all common sound decoders are explained in more detail in our free guide, which you can download here:
Railway Modelling - Matching speaker impedance to DCC sound decoders 258.33 KB 517 downloads...
Getting components for this project
You can buy some of the components and consumables used in this video, and give a wee bit of support to the channel, using the affiliate links below:
Megabass speakers: https://ebay.to/2N4VMnf
‘No Clean’ Solder Flux: https://amzn.to/2E9oOmK
Selection box of heatshrink: https://amzn.to/2zTbhv5
Black tack: https://amzn.to/2OCYhCg
Please note: If you choose to follow any of the steps or suggestions outlined in the video, you do so at your own risk and any damage or injury to yourself, your models, your equipment or others is your own responsibility.