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Sure-Fire Method for EQing?

The fundamental method (if you have the time) is to boost the mid-range gain and sweep the frequency control until you find the worst, most dominant frequency and then simply reduce the gain to taste. There are dozens of other tricks and preferences but it really comes down to your ears, the band, the gear you have to work with, and the amount of time you have to work things out.
 
The last time I saw Rush, Geddy Lee was obviously having some sort of bass issue. He was cutting in and out during the performance. The lights weren't down all the way and I saw him switch basses between songs. The band was silent and Geddy let off a quick "test run" of the new bass. It sounded terrible. Very "trebley." They launched into "Fly By Night" and he sounded great. His bass was EQ'd to the band... not to itself.

In my livingroom/studio... I leave my EQ flat. I add or subtract as needed when playing in the venue or rehearsal room. Most of the time I make very small adjustments. Usually I am cutting bottom end.
 
I get all that about practice room vs live with a band settings and trusting your ears. Here's what I'm looking for in response to my question:

Yes I do have a systematic approach to EQing in unfamiliar venues or new band settings. Here's what I do...
 
The fundamental method (if you have the time) is to boost the mid-range gain and sweep the frequency control until you find the worst, most dominant frequency.

This. While there are a LOT of additional points to consider with EQ, really dialing in a bass rig onstage is generally made easier with a parametric EQ. The steps are as follows:

1) Set the width of the band to the narrowest setting (peak).

2) Boost the "level" control all the way up.

3) Slowly turn the frequency select knob. You'll hear a kind of "whorl" sound as various frequencies are highlighted as you sweep through them.

4) Eventually, as you turn the select knob, a terrible heinous-sounding frequency will be pinpointed and singe your face.
Stop turning the knob.

6) Turn the "level" control down instead of up.

Lonnybass
 
I get all that about practice room vs live with a band settings and trusting your ears. Here's what I'm looking for in response to my question:

Yes I do have a systematic approach to EQing in unfamiliar venues or new band settings. Here's what I do...

Are you talking about just your bass rig or do you have house support?
 
When it comes to EQ, I always just boost the crap out of my 800-900hz (whatever the amp supports, or just the Mids control) and if I have the control for it, I also boost my 250hz (Low-Mids). And keep in mind I've been working in 6-piece heavy metal bands with 2 guitars, 1 vox, drums, a keyboard (or two or three) and then there's me. And here's why:
<100 hz - kick drum territory (can be up to 120 hz depending on drum and drummer) no need to fight against that and muddy everything up.

27 hz - average fundamental of the Low B on a bass guitar

83 hz - average fundamental of the E on a bass guitar

100 hz - Low B on a 7-string guitar

120 hz - E string on a guitar

240 hz - Mid-range on the guitar, most metal guitarists cut this range to sound more Uber so I'm going to boost my signal here to cut through

400 hz - kick drum attack (It's the T of the Toom) normally boosted in studio recordings

800-900 hz - the Clack of my bass (sounds ugly in the room, but emphasizes your attack in the mix)

1000 hz - male vocals begin here, not my space

1200 hz - Guitar solo territory and also female vox begin - also not my space

2khz and up - cymbals and overtones, your bass doesn't go this high

Keep in mind these are general guidelines, and my reasons to approach EQ in the way that I do.

Also, the heavier the guitars get (Mesa or Marshall on 10), the cleaner you need to keep your bass to be heard, and vice versa. If you like to have a lot of gain on your front end like I do for sensitivity you may want to invest in a "cleaner" sounding amp like a GK or a Hartke - if the guitars are more laid back (Fender or Vox on a reasonable gain) then by all means - drive your Ampeg or Mesa Big Block like you stole it :)

Peace,
Greg
 
My main bass (single pickup) has a naturally strong presence between 200-500 Hz. It is difficult to hide in a mix. When recording direct, it sounds best to me when the lows are boosted slightly @80Hz. Live, I found that things are better off set flat and I make minor adjustments to fit into the ensemble mix.
 
I try to go through a DI and I'll ask the soundmen to cut some highs around 10k-16k since they can be overbearing through a tweeter, through an amp I listen and adjust the knobs until I'm as close as I can get to a clean and transparent sound, it usually involves heavily contouring the midrange.