Habe irgendwoher folgende Tips gefunden (sind eigentlich recht gut):
Einige Tips zum EQ
20 Hz and below - impossible to detect, remove as it only adds unnecessary energy to the total sound, thereby most probably holding down the overall volume of the track 
60 Hz and below - sub [g=118]bass[/g] (kann man nur fühlen) 
80(-100) Hz - fühl und hörbarer [g=118]bass[/g] 
100-120 Hz - der "club sound system punch" liegt hier 
200 Hz und darunter - tiefe töne 
250 Hz - notch [g=43]filter[/g] hier gibt der kick drive 
150-400 Hz - boxiness 
200 Hz-1.5 KHz - punch, fatness, impact 
800 Hz-4 KHz - edge, clarity, harshness, defines timbre 
4500 Hz - extrem schlecht fürs ohr... leicht absenken 
5-7 KHz - de-essing is done here 
4-9 KHz - brightness, presence, definition, sibilance, high frequency [g=23]distortion[/g] 
6-15 KHz - air and presence 
9-15 KHz - adding will give sparkle, shimmer, bring out details - cutting will smooth out harshness and darken the mix 
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60Hz with a Q of 1.4 -- macht die kick voller. 
100Hz with a Q of 1.0 -- macht die [g=149]snare[/g] voller 
200Hz - 250Hz with a Q of 1.4 -- Adds wood to snares 
3Khz with a Q of 1.4 -- Adds atack to [g=149]snare[/g]. 
5Khz with a Q of 2.8 -- Adds attack to Kicks 
7Khz with a Q of 2.8 -- Adds Sharpness to snares and percussion 
10Khz with a Q of 1.0 -- Adds brightness to hats and cymbals 
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Bassdrum: 
EQ>Cut below 80Hz to remove rumble 
Boost between 80 -125 Hz for [g=118]bass[/g] 
Boost between 3 - 5kHz to get the slap 
PROCESSING> Compression 4:1/6:1 slow attack med release. 
Reverb: Tight room reverb (0.1-0.2ms) 
Snaredrum: 
EQ> Boost above 2kHz for that crisp edge 
Cut at 1kHz to get rid of the sharp peak 
Boost at 125Hz for a full [g=149]snare[/g] sound 
Cut at 80Hz to remove rumble 
PROCESSING> Compression 4:1 slow attack med release. 
Reverb: Tight room reverb (0.1-0.2ms) 
Hi-Hatz: 
EQ> Boost above 5kHz for sharp sparkle 
Cut at 1kHz to remove jangling 
PROCESSING> Compression use high ratio for high energy feel 
Reverb: Looser than [g=118]Bass[/g] n [g=149]Snare[/g] allow the hats and especially the Rides to ring a little 
[g=118]BASS[/g]:> 
Compressed, EQ'd with a full bottom end and some mids 
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EQ Reference: Frequencies 
50Hz 
Boost: To thicken up [g=118]bass[/g] drums and sub-[g=118]bass[/g] parts. 
Cut: Below this frequency on all vocal tracks. This should reduce the effect of any microphone 'pops'. 
70-100Hz 
Boost: For [g=118]bass[/g] lines and [g=118]bass[/g] drums. 
Cut: For vocals. 
General: Be wary of boosting the [g=118]bass[/g] of too many tracks. Low frequency sounds are particularly vulnerable to phase cancellation between sounds of similar frequency. This can result in a net`cut of the [g=118]bass[/g] frequencies. 
200-400Hz 
Boost: To add warmth to vocals or to thicken a guitar sound. 
Cut: To bring more clarity to vocals or to thin cymbals and higher frequency percussion. 
Boost or Cut: to control the 'woody' sound of a [g=149]snare[/g]. 
400-800Hz 
Boost: To add warmth to toms. 
Boost or Cut: To control [g=118]bass[/g] clarity, or to thicken or thin guitar sounds. 
General: In can be worthwhile applying cut to some of the instruments in the mix to bring more clarity to the [g=118]bass[/g] within the overall mix. 
800Hz-1KHz 
Boost: To thicken vocal tracks. At 1 KHz apply boost to add a knock to a [g=118]bass[/g] drum. 
1-3KHz 
Boost: To make a piano more aggressive. Applying boost between 1KHz and 5KHz will also make guitars and basslines more cutting. 
Cut: Apply cut between 2 KHz and 3KHz to smooth a harsh sounding vocal part. 
General: This frequency range is often used to make instruments stand out in a mix. 
3-6KHz 
Boost: For a more 'plucked' sounding [g=118]bass[/g] part. Apply boost at around 6KHz to add some definition to vocal parts and distorted guitars. 
Cut: Apply cut at about 3KHz to remove the hard edge of piercing vocals. Apply cut between 5KHZ and 6KHz to dull down some parts in a mix. 
6-10KHz 
Boost: To sweeten vocals. The higher the frequency you boost the more 'airy/breathy' the result will be. Also boost to add definition to the sound of acoustic guitars or to add edge to synth sounds or strings or to enhance the sound of a variety of percussion sounds. For example boost this range to: 
Bring out cymbals. 
Add ring to a [g=149]snare[/g]. 
Add edge to a [g=118]bass[/g] drum. 
10-16KHz 
Boost: To make vocals more 'airy' or for crisp cymbals and percussion. Also boost this frequency to add sparkle to pads, but only if the frequency is present in the original sound, otherwise you will just be adding hiss to the recording. 
Specific Instruments 
Vocals 
General: 
Roll off below 60Hz using a High Pass [g=43]Filter[/g]. This range is unlikely to contain anything useful, so you may as well reduce the noise the track contributes to the mix. 
Treat Harsh Vocals: 
To soften vocals apply cut in a narrow bandwidth somewhere in the 2.5KHz to 4KHz range. 
Get An Open Sound: 
Apply a gentle boost above 6KHz using a shelving [g=43]filter[/g]. 
Get Brightness, Not Harshness: 
Apply a gentle boost using a wide-band [g=186]Bandpass[/g] [g=43]Filter[/g] above 6KHz. Use the Sweep control to sweep the frequencies to get it right. 
Get Smoothness: 
Apply some cut in a narrow band in the 1KHz to 2KHz range. 
Bring Out The [g=118]Bass[/g]: 
Apply some boost in a reasonably narrow band somewhere in the 200Hz to 600Hz range. 
Radio Vocal Effect: 
Apply some cut at the High Frequencies, lots of boost about 1.5KHz and lots of cut below 700Hz. 
Telephone Effect: 
Apply lots of compression pre EQ, and a little analogue [g=23]distortion[/g] by turning up the input [g=105]gain[/g]. Apply some cut at the High Frequencies, lots of boost about 1.5KHz and lots of cut below 700Hz. 
Hi-Hats 
Get Definition: 
Roll off everything below 600Hz using a High Pass [g=43]Filter[/g]. 
Get Sizzle: 
Apply boost at 10KHz using a Band Pass [g=43]Filter[/g]. Adjust the bandwidth to get the sound right. 
Treat Clangy Hats: 
Apply some cut between 1KHz and 4KHz. 
[g=118]Bass[/g] Drum 
General: 
Apply a little cut at 300Hz and some boost between 40Hz and 80Hz. 
Control The Attack: 
Apply boost or cut around 4KHz to 6KHz. 
Treat Muddiness: 
Apply cut somewhere in the 100Hz to 500Hz range. 
Guitar 
Treat Unclear Vocals: 
Apply some cut to the guitar between 1KHz and 5KHz to bring the vocals to the front of the mix. 
General: 
Apply a little boost between 100Hz and 250Hz and again between 10KHz and 12KHz. 
Acoustic Guitar 
Add Sparkle: 
Try some gentle boost at 10KHz using a Band Pass [g=43]Filter[/g] with a medium bandwidth. 
General: 
Try applying some mid-range cut to the rhythm section to make vocals and other instruments more clearly heard.