Panama wrote: Why do you say it looks male? There really is no way to tell from a photograph, but at that size I would say female!

Looking at the size and colouration, I would also guess female.

The next molt will confirm it for you!

Males of the Psalmopoeus species starts Mature from 14cm up and in 18 months, not sure fire way to guess but it gives you more or less an Idea.
At that size the next molt will confirm it for you, should be able to see it with the naked eye.

From what I know P. pulcher is one of the smaller species in the Psalmopoeus genus.

If the spider shown in the picture was not sexed by looking at the molt I think it can still go both ways.

I have a male that was just over 12+cm on its previous instar and he matured a few days ago, he's nice and big now.

From what I have seen, is that its difficult to tell a male and a female apart just by color and size until the male has his ultimate molt.

All the Psalmopoeus species males are Sexual dimorphism.
They all look fairly similar when they mature, like hairy balls of fluff.

So would look like your MM P. cambridgei you have.

here is a link to pictures of a Psalmopoeus pulcher