Every case is different but here r some guide lines:

The room has a lot 2 do with the sax sound. 4 an open sound u'll need some space. Small rooms make the sax sound boxy.

In bigger rooms, let the musician walk about while playing. Let him find the spot where he ( and U) feel com4table with.

Start with a condenser mic pointing down at 45 degrees @ a point between the leaf (PIA) and the bell.

Let the player tilt the instrument while playing, so he'll understand the mic technique needed 4 his artistic expression. Horns r like vocals in that sense - playing of and on axis and changing the distance is an integral part of the color and dynamics.

That's y I don't use clip-on mics in the studio.

Pay special attention 2 the cue mix - again, as U would if U were recording vocals.

Peace,

Zooot