Just purchased and plugged together a Bachmann HO turntable. Seems like a lot of whirring and gear noise before the deck actually starts moving. Is that normal? Don't want to burn up my new toy. Also, it appears that I need about 40 - 60% power on the speed controller. Can I use a 6 volt wall wart to run the turntable? Again, don't want to ruin the unit.

Thanks for responses
Bob