EQ Frequencies

  • Thread starter Thread starter Major Tom
  • Start date Start date
M

Major Tom

New member
Does anyone know the EQ frequencies of actual guitar amps?? I get frustrated trying to get patches on my RP2000 (amp modeller) to sound right using the parametric EQ, not knowing what frequencies to add/subtract. If I knew the actual center EQ frequencies of the modelled amp (or any real amp) I would at least have a starting point. Much easier on my J-Station or Hotrod Deville, just turn the knobs...
 
Oh my.........

I don't understand the logic of what you're trying to do.........

Why are you using EQ at all at this point? Are you talking about EQ on-board this RP2000 as part of a patch??

If so, it really is no different than plugging into an amp and messing with the tone controls -- you play around until your EARS find something you like.

You don't use a spectrum analyzer to decide how your patches should sound - you use your EARS.........

Bruce
 
Thanks for your replies. Yes, the built in parametric EQ of the RP2000 as part of the patch. What I'm trying to accomplish is to get the EQ tweaked to where the patch sounds good/realistic to my ears, just like when I adjust the kobs on my real amps. With a real amp, its very simple: 3 or 4 knobs, boost/cut; not too many choices. With the parametric, you have to choose the frequency and the amount of boost/cut; infinitely adjustable. Also, the EQ editing on the RP is done with up/down/sideways buttons, a very time consuming and tedious procedure in its own right. It might not sound all that difficult, but you can spend HOURS experimenting until ear fatigue, confusion, and frustration set in, and I don't have that much time on this planet.
I'm assuming that amp manufacturers have spent countless hours researching and selecting 3 EQ points for their amps that work well for adjusting tone to different guitars and ears. I would like to use that information as a starting point to better simulate the actual tone controls of a real amp and simplify the process so I can spend more time spankin the Strat.
 
OK... I see what you mean now.... I think you're asking what a typical amp's tone control EQ freq is set around so you can emulate that....

Well.... the short answer is probably somewhere around bass -- 200hz, mid -- 800-1000hz, high -- 2-3KHz.... presence can be around 4Khz.

The long answer is -- this may not help much... many amp's controls are passive EQ circuits, which only cut frequencies, and respond differently than on-board EQ for a mixer or outboard.

Of course, these are only rough approximations -- there is no way to pinpoint something exact for your setup -- you really do need to use your ears to do this... once you find YOUR sweet spots, remember them and tag your other patches in a similar way.

Bruce
 
This is why I suggested the spectrum anylizer. You can SEE what your amp sounds like and tweek your RP2000 to match. It makes the whole job much faster and easier.
 
you're not going to get what you need just by looking at a Spectrum Analysis output.

you need a lot more to characterize the transfer function such as
Damping and Q. you'll be wasting your time.
 
The way I understand the question, Major Tom wants to get the same sound from his RP2000 as he is getting from his amp. If that is the case, he could record a sample of the amp and look at it with the anylizer. Then, he could see where he needs to make changes in his EQ.

I do this type of thing all the time and it works. This is the way I got my J-Station to sound like my 64 Fender Bassman.
 
Firebird, that's not a bad idea, if I run an output from my amp into the computer, turn up each EQ knob then look at what freq is affected, I would find the EQ points for my amp. I believe one of my audio programs has a spectrum thingie, I will give that a swing, thanks
 
You must log in or register to reply here.
Back
Top