well the voltage actually across them each would only be +300. Teh are 1% carbon film units from this place:
http://www.tubedepot.com/resistors.htmlI buy from this place because they ship FED Ex and are located a few miles from the main Fed Ex hub in Memphis, TN.
so the shipping speed is like lighting. They literally just roll a van to the central FedEx hub each day.
I always use a bangstick..... I would have been dead long time ago if not. If they pop, they pop. I'll double it up, but thats what Yeasu had.