a10driver Posted July 11, 2012 Share Posted July 11, 2012 hi i just got a esu sound decoder but no speaker how can i tell if it,s a 3.5 or v4 .i dont want to get the wrong speaker and blow the chip. cheers a10driver Link to post Share on other sites More sharing options...
Lady_Ava_Hay Posted July 11, 2012 Share Posted July 11, 2012 hi i just got a esu sound decoder but no speaker how can i tell if it,s a 3.5 or v4 .i dont want to get the wrong speaker and blow the chip. cheers a10driver You won't blow the chip if you fit a 100 ohm speaker a la V3.5. You won't hear much if it is a V4. I think you need to fit some sort of speaker and a motor or the chip won't read or write CV's. Link to post Share on other sites More sharing options...
SRman Posted July 12, 2012 Share Posted July 12, 2012 Plug it in but don't connect any speaker, then read the version number back to work out whether it is v3.5 or v4. It will need that connection to the motor but it should work without the speaker. Link to post Share on other sites More sharing options...
a10driver Posted July 13, 2012 Author Share Posted July 13, 2012 hi i carnt read what chip it is i have onley got a dynamis . so i tryed it on a 100 ohm and a 4ohm speaker .the 4ohm was the loudist. so i am taking it will be a v4. thanks for the help. cheers A10 Link to post Share on other sites More sharing options...
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