Hornby Class 31 TTS & Loksound DCC sound speaker upgrade EM1 & 25x25x7
Channel: Woodbury Road TMD
Date: 24/08/2020

Hi Guys 

So we have upgraded the speakers in a Hornby class 31. 

For this video we've used the Railfreight class 31 which is 21pin model, 31 tts sound chip, a bachmann 21 pin to 8 pin adapter but you won't need if you have the 8 pin model
an EM1 and 25x25x7 speaker, you can get these from
https://www.roads-and-rails.co.uk
Highly recommended them

You need to connect the speakers in parallel for both TTS and loksound chips 

If you have the TTS you will to change the following CVs.. 
CV151 to 255, CV152 to 1
if still not smooth then
CV 150 to 1, CV 153 to 255 and CV 154 to 1

Also changed CV3 to 30 and CV4 to 25, these two are the acceleration and deceleration so you can adjust how you wish
volume CV you can change how like but for the TTS I recommend not to go over volume 6 as this can put more strain on the chip and TTS can get hot! 

Music by
Don't look now - Hold it Down