Curious to know how others go about getting a female vocal to sound like a deep male voice.

I've tried the transpose -6 to -8 thing, but for me to get it closer to that "Tchami" style I have to use a plugin. For that I use Elastique Pitch. It doesn't work great all the time with every vocal sample but I've gotten it to sound better than the transpose thing.

So this is my method but I know there is a another way to do this. How do you do it?

Transpose it down -12 and then put your formants to 0 and put complex pro. It makes a really awesome pitched down vocal