My first thought here is that the echo is on the original tape.
Have you checked that?
Thanks Jim for the suggestion. Unforunately this is not the problem as I have already played back this tape on a number of VCR's and it always plays OK. I have also edited this tape before, using Premiere Pro 1.5.1 which was of course an analogue system and Premiere Pro 1.5.1 coped with it OK. I no longer have Premiere Pro 1.5.1 and have no longer got the edited version which is why I want to re-edit and burn to DVD. Thanks for the response, it could well have been the problem. Any other suggestions or things to check would be greatly appreciated.
Try recording the VHS to a DV tape first. Listen to that. If it sounds OK, then capture the recorded DV tape. If it sounds funky, then one of your decks is adding the echo.