Equalizing or tone shaping is clearly a very important tool in our
audio arsenal. By the way, wouldn’t Audio Arsenal be a good name for a
band? Of nerds?
Anyway… I believe that there are two reasons for using EQ. The first,
and perhaps most important in the overall scheme, is to properly tune
the system for the type of response that is wanted or needed.
Some frequencies that might excite the room too much can be reduced,
and tailor the low-frequency response to match the volume of the room,
etc.
Of course, don’t forget that there are acoustical problems that cannot be solved with electronics. I know, call me a heretic.
But the other kind of EQ I’m thinking of more is the “color” applied
to individual channels. A lot of this is already determined by
microphones and where they’re placed. Certainly a snare sounds different
when mic’ed with a dynamic vs. a condenser. And really, it does start
at the microphone.
But let’s say you’ve chosen the best mic for the source, and put it
in the right place, and now you need to do a bit of final tweaking on
the channel EQ for the sound to be “perfect.”
I forget who said it, but “people don’t go to the concert to hear the
kick drum.” Whoever it was has never been to a Metallica concert. I was
at one back in the mid-1990s (the “Black Album” tour). All three of the
opening bands had already played, and we were in the middle of the
break before the headliner came out. Anticipation was growing… And
growing.
And then at one point, the drum tech came out, sat down, and stomped
on the kick pedal, sending a thunderous sound through the audience. And
everyone went wild! Who would have thought that a single-note kick drum
solo would have brought the crowd to its feet!
But I digress.
My point is that each instrument may sound great on its own, but may not sit properly in the mix.
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