on some forum it was written Here's a sort of frequency guideline, which I'm just going off the top of my head to write up: lower sub-bass - 20hz - 50hz - adds the rumble to the bass sub-bass - 50hz - 80hz - adds more body to the bass (gives it that rounded thump) low-bass - 80hz - 200hz - thickens the bass sound. mid-bass - 200hz - 600hz - Adds more body to the overall sound of the music. low-mid - 600hz - 800hz - Adds more body to the mid-range mid - 800hz - 2500hz - Fundamental mid-range, 'colours' the music. Personal preference, but I usually see it turned down rather than up. Setting it too low makes the music sound 'thin' upper-mid - 2500 - 5500hz - Changes the timbre of things such as snare drums, guitar, vocals. Again, personal taste. lower-high - 5500hz - 8000hz - As above, but starts to affect the clarity of the music if it's set too low. high - 8000hz - 12000hz - Makes a very obvious impact on the clarity and 'cleanness' of the music. If it's set too high, it causes sibilance and a 'tinny' sound, if too low the music can sound dull. upper-high - 12000hz - 16000hz - Most non-professional EQ systems don't even have this range available, but if you've got this range, adjust to suit your preference. 16000hz and beyond - Most people can't even hear this, but rather than directly affecting what you hear, modifying this range can change the character of the overall sound as it changes the shape of the soundwaves. It's probably not the best guide, but I know what each range sounds like in my head. I had a really good chart somewhere which explained in much less detail and with much better words how each frequency range affects the sound. I'll have to find it.
