Remo key-tuned Djembes are generally tensioned to perform right out of the box. Some professional players will match the open/bass tone to the root note of an ensemble. In most cases, it's player preference based off desired response and pitch.
Note: the looser the head, the lower the tone/response...tighter the head, the higher response/pitch.
One suggestion would be on fine tuning...with your finger, open-tap the heads edge near each rod and try to match the pitch all the way around by slightly turning each rod. Play with it till you get a nice balance of high slaps and bass tone from your drum.