What do you mean by calm? Lots of dogs don't tend to be hyper even when young, but a young dog is never going to be as calm as an adult.
Well I had an Alaskan Malamute. It definitely could have been the lack of training on my part, but he was distracted by everything it seemed like. And if he wanted to check something out, we usually did.
Could you mention a few med to large breeds that are known to be less hyper, even when young?