Tts sound in lima locos

[Kirkfish]

Hi I've recently retro fitted my lima class 47 with a tts chip.trouble is the volume as standard is very low I've tried adjusting cv161 and 182 volume cvs but no look.ive previously done the same to my hornby 37s and both I can adjust the volume settings with my select controller which is running version 1.6.any help much appreciated 

[Chrissaf]

Are you using the factory supplied speaker or an after market one?

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If after market, could it be a speaker with an Impedance higher than 8 Ohms, say 40 Ohms or 100 Ohms for example.

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If it's a factory supplied speaker, then maybe the speaker is faulty or the Amp output of the decoder is faulty.

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[96RAF]

when running sound on the main does the sound actually change when adjusted e.g. apply value zero to ensure it turns off and then value 8 which should be noticably louder. Is there any response at all. 

 

There was a small batch of tts diesels where the master volume was offset upwards so try CV184. Regardless of that the individual volume setting CVs should work.

 

If not read the value of CV7 and I can pass the decoder ID back to Hornby for comment.

[Kirkfish]

Hi the decoder is as it came from the factory.i will try adjusting cv 184 and see if that helps I'm unable to read cv7 as the select can only write the cvs not read them.thanks will inform you how I get on

[ColinB]

As you have a lot of room in the loco, change the speaker to an Iphone one. You will be amazed at the difference. It is also an awful lot easier to insulate.

[Kirkfish]

Solved it by fitting a spare hornby speaker I had removed from 1 of my 37s sounds great now trouble is I've a class 20 exactly the same.im going to try a different speaker in that and see if it cures it.