The 4033 is a pretty decent mic. Its not quite flat, if I remember right it has a slight bump at 6 to 7k.
There are a number of reasons why vocal performances are as norm captured very close to a microphone:
- A vocal performance is something you want to capture as close as possible, to obtain an as direct as possible sound. The further away from the mic you record, the further away your vocal will sound, very simple. At three feet away, depending on the room, it will sound thin and cold (as compared to a close milked vocal)
- The further away from the mic, the more room acoustics and ambiance come into play.
- The further away from the mic, the more the effect of the slightest head movement of the singer on the sound.
I'd go even closer than atomic suggested, 4 to 6 inches. Depending on the vocalist, see if you can get away with recording flat. If this gives you a load of low pops, use the roll-off switch on the 4033. If after that you still have popping problems, you might need a pop filter. Rather than buying one, get a steel wire coat hanger, shape it so its round, tell the singer to wear stockings when she comes to the studio, then tell her you need to take them off - and put them over the coat hanger. Tape it to the mic stand so she sings through it into the mic and voila, problem fixed.