Understanding EQ / Everthing in its own space

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Okay when thinking about mixing and EQ never lose sight of the purpose--which is to create an intelligible mix with clarity and power. Myself I have an approach that may be a little bit more radical but has served me fairly well.

First off I'm a big believer in using shelf filters to nip and tuck sounds. I use a LOT of high pass filtering to roll off bass frequencies on almost every instrument. For all practical purposes I filter everything in some way or another.

I usually run a high pass filter to eliminate anything below 100hz on guitar, snare, toms and so forth. For cymbals I usually start the cutoff around 500hz. Vocals about 150hz or so. The reason I do this is I only want the bass and kick drum occupying the space below 100hz to allow for a powerful, yet uncluttered, low end.

Suprisingly this technique works really good for getting that low end down. When I am done with a mix I usually run another highpass filter over the whole mix around 55-60hz to eliminate a lot of frequencies that you can't really hear or feel--and aren't reproduced on most stereo systems. This low end mush can really sap a power amp and speaker of its ability to pump. Once cleaned up it is amazing how punchy your tracks will be, without any apparent loss of low end.

I do a similar thing with a low pass filter on most of the instruments as well to eliminate any extraneous high frequences. I usually start rolling off guitar around 8khz gently, the kick drum around 6khz, toms around 10khz and snare around 12khz. The only things I want to inhabit the area above 10khz are cymbals, high hats--and most importantly--the "air" of the vocals.

It is amazing how much vocals can cut thru a mix and still keeping a high sheen on the overall mix using this method. Your seperation is often enhanced as well. And you don't have to resort to awful harmonic exciters like BBE and Aphex... which are usually poorly used and can sound very sour to me.

After I have filtered my frequencies I actually begin to EQ things. Now I have a few rules of my own when it comes to using EQ that keep things under control. Once again, these are just guideline rules that I occasionally break but I have found that they are applicable for me 90% of the time:

1.) Always use a parametric EQ. Graphic EQ's are for wusses. :D

2.) When boosting Q must be wider (less than) than 2.

3.) When cutting Q should be narrow--from 1.5 or greater.

4.) No cut or boost may be greater than 6db +/- in any case (occasionally broken for cutting).

5.) 75% of my boosts are less than 2 db. 90% are less than 4 db of boost.

6.) Never cut more than 8db of anything unless notching out specific small frequencies.

7.) It is okay to occaionally "pile on" a wide Q boost or cut with another narrower boost/cut if you need a radical increase in that particular frequency (this makes it sound more natural and less like a resonant peak).

Okay, when I am using EQ--which I admit I do a lot of *subtle* EQing--I always aim at doing one of two things:

1.) Remove the 'bad' qualities of the sound such as rattles, hums, hiss, muddy frequency areas and so on.

2.) If there are no bad qualities that need to go, then accentuate the positive elements.

After I have taken care of those problems I then move on to actually mixing the instruments together. I always ask myself "where does this particular track live?" and aim towards cutting other tracks that intrude on that area by a few db's. The idea is to cut away parts of interfering signals to allow certain instruments to shine in particular bandwidths. This is my general schema (these are relative and only guidelines--individual mixes/use may vary):

80hz - rumble of the bass
100hz - thump of the kick
200hz - bottom of the guitar
250hz - warmth of the vocal
350hz - bang of the snare
400hz - body of the bass
500hz - clang of the high hat
600hz - clang of the cymbals
800hz - ping of ride cymbal
1000hz - meat of the guitar
1200hz - body of the snare
1400hz - meat of the vocal
1600hz - snap of the kick/plectrum on guitar (attack)
2500hz - wires and snap of snare
3000hz - presence of the vocal
4000hz - ring of ride cymbal/top end of bass guitar
6000hz - sizzle of the high hat
7000hz - sizzle of the cymbals
8000hz - top end of the kick
9000hz - brightness on snare and cymbals
10000hz - brightness on vocal
12000hz - air on vocal
14000hz - air on cymbals

Generally I want each listed element to be the "star" of that particular frequency range--anything that is near that range that is stealing the thunder of the instrument gets a gentle 1-3db cut across a fairly wide bandwidth. For example, almost universally you have to cut guitar at 3khz to make room for the vocal--especially at high gain settings with tons of harmonics. Lower the guitar a bit in that region and POP... the vocals come out.

I realize my method is a LONG one that takes some time, but results in superior mixes for me. I like to feel that the entire frequency spectrum is represented by something unique in each area to allow the full instrumentation to shine through. I also make ample use of panning to get clarity and seperation and sometimes take that into consideration--especially when two elements are in the same frequency band. It is good to have one or both panned differently from one another. A perfect example is the ride cymbal and top end of the bass: the bass will be coming at you down the center and the ride cymbal should be off a ways R or L--thus avoiding conflict.

Hopefully this helps. I didn't give away too many of my good secrets.
 
K,I actually pasted these EQ guidelines on the wall next to my autographed rudy ray moore picture.I looked at it when I was mixin and thought the guitar was buried.I moved some noisemakers down at 1000 and boom the guitar started singing
thanks
 
Tech, DAMN those were some awesome tips. I'm going to use a lot of what I read here. These were things that I've been looking for. Thanks and praises to everyone for the info.

Done211, you have an AUTOGRAPHED Rudy Ray Moore picture????? Damn I envy you right now.
 
This was very useful information! I will def put it to use. :D
Thanks for sharing your knowledge.
:cheers:
 
CR Perfection said:
Tech, DAMN those were some awesome tips. I'm going to use a lot of what I read here. These were things that I've been looking for. Thanks and praises to everyone for the info.

Done211, you have an AUTOGRAPHED Rudy Ray Moore picture????? Damn I envy you right now.

Glad to assist. I used to be a intercept operator for the navy and part of our training--a few MONTHS--was wholly based on frequency, radio wave propagation, reconstructing weak signals and a bunch of stuff that translated 100% to mixing.

In the early 90's I had the equivalent of a Wavelab program for reconstructing radio intercept... so I've been doing this for a long time.
 
I Love this stuff, lol, thanks for providing it ... i'm glad i ran into this website/forum today.
 
Pretty good tips, I tried out the high pass filter on some of my instruments and made an even cleaner sounding mix. I still have one last thing i'm still foggy about and that is the levels. I'm unsure as to where the levels of each instrument should be. Say If I start with the kick and bass. Should the levels of those instruments be cranked as high as I can get them then add compression for the peaks? or keep it at medium level and work that way? I'm not trying to master or anything just get a average sound level and not have it be too quiet. Hope it makes sense what i'm trying to ask...probably not :)
 
Sabane said:
I still have one last thing i'm still foggy about and that is the levels. I'm unsure as to where the levels of each instrument should be. Say If I start with the kick and bass. Should the levels of those instruments be cranked as high as I can get them then add compression for the peaks? or keep it at medium level and work that way? I'm not trying to master or anything just get a average sound level and not have it be too quiet. Hope it makes sense what i'm trying to ask...probably not :)

Every mix is different music wise as is every genre, but here are some "defaults" to get you pointed in the right direction. Note that this is where the solo'd signal level should be peaking at and all of these are negative values because I assume you are mixing on digital gear.

Snare: -2db
Kick: -3db
Toms: -3db to -5db depending on the use
Overheads: -6db
Room mics: -6 to -2db depending on amount of ambience
Bass guitar: -4 to -6db
Guitar: -4db to -2db (the louder the more 'metal' you sound imho)
Vocals: -1db to -0.5db
Foreground synth parts: -3 to -2db
Background synth parts: -6db to -8db
Backing vocals: -4db to -3db
Ambient sound effects/samples: -7db to -9db

Keep in mind that issue with levels is often an issue with EQ and panning amounts. Use EQ and panning to create seperation.

For example: I usually pan backing vocals in pairs off to each side and have the main vocal down the middle. Sometimes I will slightly pan the main vocal a bit to one side and pan the backing vocal to the opposite side fairly far out. Tricks like that will increase your seperation and help with those pesky level difficulties.

A little tip I use for myself is to inch the kick drum up a fraction of a db from where I think it should be and move the snare down a fraction of a db from where I think it should be. Usually ends up sounding more mixed that way.

Be careful with overheads--they can junk up your mix if they are too loud. I *NEVER* use compression on my overheads to contain this problem even more. Depends though, some guys use compression to 'gate' the cymbals but I don't like that sound.

Oh, I always compress FIRST then mix. I see where I have to adjust the fader to get my kick to hit at a fairly level -3db. Sometimes compression can really change the dynamics of a sound (well... duh!) so I make sure to solo it before setting the volume fader. I compress first to also control the tone of the drum and overall response to make sure I like it... adjusting the volume later is a much easier fix.
 
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So I'm assuming you guys are using external EQ units, or software EQs? I was toying with my synth and I couldn't find a way to do all of this. The EQ on my piece is a mfx in which you route channels through, so you can't EQ drums unless you have each drum sound on an individual channel.

And you can also only route a channel through one mfx at a time. So if you have ch.2 (bass) routed though the EQ mfx, you can't also have it going delay mfx.

What's my cheapest way around this? Buying an EQ rack unit, or is their a good (and cheaper) software option?
 
Software plugs... unless you want to spend 2400 bucks on 24 used dbx EQ's. Not really an option.
 
remember the GIGO & notch power

I think these EQ charts will be really helpful to the beginners, and even good for cats futher down the line.

I think one thing I didn't see was HOW to start putting this EQ on, and I wanted to chat about that.

Feel free to disagree, but I think a great technique is really learning about Q, and jacking notches to ID spots for EQ pushes. In my experience, if you are using a chart like this, or even better your EARS, using notches is the hot ****.

Say you are ****ing with a snare sound. Jack a tight Q in that area around 120-200 to find where you gotta add to hear some balls on it - TURN THE NOTCH UP ALL THE WAY AT FIRST TO ID AREA. Even a total beginner will hear certain spots where the sound sounds better, then pull back the level to where it blends naturally.

You can use the same techinque on the "REDUCTIONS". TURN UP THE NOTCHS ALL THE WAY at first to ID where it sounds like **** the most. **** these charts on some things, every sound is different. And as these are very good charts to get started, the best **** is to use your ears and good monitors to add to what sounds good, and pulls back what tastes like ****.

Generally, remember the GIGO rule. Garbage in, Garbage out. If you start with really crappy sounds, crappy vocalists, crappy bass sounds, bad A/Ds, etc, etc you'll generally end up with crap at the end of the day. A good engineer or good home studio ***** even can make a bad record sound a little better, but in the end starting with good **** generally is what makes something really hot.
 
Graphic vs. Parametric

What are the differences between graphic EQs and Parametric EQs (other than the obvious)? For instance, why should I have both? Are there specific instances in which one would prove more useful than the other? Or, is it just a matter of choice?
I'm justing fishing for opinions.
Thanks.
 
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Re: Graphic vs. Parametric

Smooth L said:
What are the differences between graphic EQs and Parametric EQs (other than the obvious)? For instance, why should I have both? Are there specific instances in which one would prove more useful than the other? Or, is it just a matter of choice?
I'm justing fishing for opinions.
Thanks.

The difference is huge:

Amatures use graphic EQ's

and

Pro's use parametric EQ's
 
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