The best thing to do is always to choose your sounds well in the first place i.e. if you pick a very clicky kick drum with a very stringy sounding bass guitar then your going to have a clash and not obtain that desirable separation, where as if you have a clicky kick drum and choose an analogue bass patch with a soft attack and without that 2kHz beater thing then the sounds will marry up a treat and EQ won't be needed I'd apply this to all of your sounds choices - do they muddy everything up? do they clash? - check out he way DR DRE chooses his sounds quite amazing in my opinion.
However, the deliberate
use of EQ to add or takeaway when done properly sounds fantastic - the
easiest way to locate an offending frequency or a frequency you want to
boost is to put your EQ boost on full for the relevant band and the
sweep the frequencies till you find it will jump out of the speaker I
promise, you . I'd advise you to keep your monitors at a fairly low
level when doing this though! Not nice on the old ears!
Another
great trick I sourced form Tony Visconti is that it sometimes cool to
EQ the octave above where the sounds really is i.e. if you vocal is
really strong at 250Hz then try Eqing the octave above which would be
double the frequency in this case 500hz Also you can look up the key
that the song is in and it will tell you the dominant frequency of that
key, then muck about with the octaves.
KICK DRUM
The
punch component lies between about 80 and 100Hz - below this range you
will tend to feel rather than hear. Warmer kick sounds tend to go if in
the 200-300Hz region, then you have the click or the mallet up around
2.5 to 6kHz.
Roll off muddiness around 300Hz
Boost highs around 5-6kHz
Boosting around 10-12kHz tends to bring out hiss which can be cool if
used as an effect.
SNARE DRUM
The fatness of the snare tends to be around 120 and 400Hz. Boxy sounds
are full of high energy in the 800Hz-1.2kHz
HI HATS
High hats tend to live in and around the 12kHz
You can try boosting around 3-6db for extra sizzle.
BASS
Bass
gets most of it's energy from the 80-100Hz area, for a warmer sound the
100-300Hz region can be boosted. Moe attack can often be obtained by
tweaking the 50-1500Hx area. String and fret noise can be found around
2-5kHz.
Try boosting 40-60Hz for real big bottom end
Try cutting around 300Hz if it's a little stodgy
Boost around 5Khz for presence
VOCALS
Plosives
and handling noise can be can be reduced by cutting below 100Hz, though
this may need to be balanced against side effects. Nasal sounds can be
addressed around 1-3kHz while the 4-5kHz range ca be boosted for more
presence.
Also
Try a cut or boost around 300Hz
Cut irritating mid range and sibilance around 6/8kHz
Boost around 6kHz for clarity
PIANO
The piano bless it is far less of a pain when it comes to eq and string
noise hiss etc don't apply!
Try cutting stodge around 300Hz
Cut any honkiness around 1kHz
Boost around 6kHz for presence and clarity
ACOUSTIC GUITAR
Boosting
around the 80-120kHz range gives low end weight whereas you achieve a
little more boom around 200-300Hz boost around the 2.5khz is good for
clarity in rhythm parts as it brings out the strumming. 5-10kHz
emphasises sparkle.
Also
Cut 100-300Hz where muddiness and boominess is
Cut 1-3kHz to make image higher and more transparent
Boost around 6kHz for presence and clarity