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Blackeunos

Sound in Heljan 128 oo gauge

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Hi,

please excuse if this has been covered elsewhere but being new to dcc I was just after a little reassurance that I was doing the correct thing. I have a Heljan 128 oo gauge parcel loco that I have fitted with a 21 pin sound chip Loksound 4 from Howes along with 2 sugar cube speakers wired correctly. Problem is it is very loud and I would like to reduce the volume. I have read the manual and it would appear that I need to adjust CV63 down from the default setting of 183 to probably 120-140. Am I correct?

I am sure one of you experts can assist please

regards

stewart

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If it is very loud, you may find that you have to reduce CV63 a lot more than seems logical to get the volume you'd like.

 

With a new sound project, I try it at 96 and then adjust up or down in steps of 8 until I'm happy.

 

John

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Hi Wiggy and John

thanks for the very speedy reply I will have a go, at least I now feel a bit more confident that I wouldn't blow the chip!!

Regards

stewart

Edited by Blackeunos

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If you haven't done it already record the following CVs before changing them.

 

CV3, 4, 5, 6, 54, 63, 64 & 65.

 

Always useful to know the original setting if you want to go back after changing one.

 

Dave.

 

 

 

  • Agree 1

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On 23/12/2019 at 17:29, Blackeunos said:

Hi Wiggy and John

thanks for the very speedy reply I will have a go, at least I now feel a bit more confident that I wouldn't blow the chip!!

Regards

stewart

 

It is very unlikely that you would "blow" a decoder by changing CVs.

 

Dave's suggestion of recording CVs is something really worth doing, especially if you are making a few changes.

 

If you get in a tangle with CVs, you can always reset a decoder. For example, writing a value of 8 into CV8 on a LokSound – and many other makes of decoder (but always check with the manufacturer's manual) – resets the decoder to the state it was blown by the supplier. You can then start over with CV changes. Contrary to things you may read elsewhere, doing a reset does not erase the sound.

 

John

 

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Thanks again for your advice and suggestions as I am still very much a beginner to dcc and model railways so any advice is always welcome and taken on board.

regards

stewart

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On 27/12/2019 at 12:44, Blackeunos said:

Thanks again for your advice and suggestions as I am still very much a beginner to dcc and model railways so any advice is always welcome and taken on board.

regards

stewart

I'd be interested to know what you think of the unit - especially running - and the sound you've installed?

Chris

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