Can someone share "general" eq tips when setting up vocal mics?
"Vocal" mics "generally" have a low frequency proximity effect, an increased bass boost as distance (proximity) to the mic element is decreased.
The frequency of maximum boost varies with the microphone type, and may be a relatively narrow or wide peak ("Q"), and the center frequency of the peak may vary over a wide range from 250 Hz on down to below 100 Hz. The proximity peak may be as little as 2 dB to more than 10 dB depending on mic type and distance.
The difference in proximity effect requires drastically different EQ and LP settings dependant on the vocalist's distance to the microphone and it's type.
Some mics have the element closer to the wind screen, which can give more gain before feedback (inverse distance law) but also increases the proximity effect.
In addition, most "vocal" mics have an upper "presence" peak, which also varies in frequency and "Q", commonly from 3 kHz to 10 kHz, which may also vary with proximity.
Simply looking at the response curves of microphones will give you a good idea of where the two peaks are. The difference in the frequency, "Q" and amplitude of the peaks often causes people to love or hate particular microphones, though if they were simply aware of what causes the difference, could use them to advantage.
The two peaks may be complementary to a particular voice, or may make a voice sound like mud or an "icepick in the forehead".
There are some vocal mics available that have very little proximic effect (such as EV's "Variable D" mics) which can be useful for vocalists that like to "work the mic" at various distance without changing the sound.
Some voices have such different characteristics between loud and soft, upper and lower register, speaking and singing that two (or more) different EQ settings must be used to accommodate the different styles.
Some digital consoles have a "hat EQ" option (named for requiring a different EQ because of the resonances that occur when wearing a hat compared to without it) , so you can toggle between different EQ on the same channel.
I frequently use a general EQ on the vocal sub master to counteract the particular proximity effect of the microphones used and provide a global HP, which then allows simply engaging or disengaging the EQ and HP filter to effect three different options very quickly without requiring two separate channels or a "hat EQ".