Thanks a lot guys for the Information, I changed the decoder for a ESU 82885 V4 Micro DCC Sound Decoder 8 pin which when i tried worked fine. I was wondering why they supply a rectangular speaker, when the hole underneath is for a circular 20mm speaker ?. I also have a Bachmann 03 which I would like to convert to DCC sound and wondered If anyone had done it. Heres a photo for anyone interested.