That's called intermodulation distortion (IM). It occurs whenever you have multiple tones through a nonlinearity. Real amps do the same thing.
Thanks, Cliff, sincerely, for weighing in on this. This explanation does ring true (no pun intended). It makes perfect sense that, in that we have a very damn-near exact virtual re-creation of real-world amplifiers in the AxeFx, some of their inherent "foibles," such as IM, naturally emerge. Yet, being that we have the benefit here of having, at our disposal, a myriad of virtual world parameters, the depth of which is absolutely unparalleled, are there any we can tweak that would reduce or eliminate IM, if desired?That's called intermodulation distortion (IM). It occurs whenever you have multiple tones through a nonlinearity. Real amps do the same thing.
As I said on page 1, the clip sounds normal. It sounds like a real amp. Kinda odd reading through this thread.
Also, you guys realize that this isn't just an amp thing, right? You can get IMD (never knew the technical name for it) from an acoustic guitar.
Let's just suck all the idiosyncrasies out of guitar playing. Yeah, that sounds fun.
Whenever you have nonlinear distortion, you get intermodulation between signals. The only way to eliminate it is to reduce the gain until there is no distortion. That only works for clean tones....being that we have the benefit here of having, at our disposal, a myriad of virtual world parameters, the depth of which is absolutely unparalleled, are there any we can tweak that would reduce or eliminate IM, if desired?
This isn't normal...Try real amp with lighter touch and volume pot.You will see what I'm talking about.This reduces dynamics and sustain.I know that real amp does it but Its not "loud buzz" and whey you roll off volume pot or playing with lighter touch it disapears.My mesa lonestar dont have this problem...As I said on page 1, the clip sounds normal. It sounds like a real amp. Kinda odd reading through this thread.
Also, you guys realize that this isn't just an amp thing, right? You can get IMD (never knew the technical name for it) from an acoustic guitar.
Let's just suck all the idiosyncrasies out of guitar playing. Yeah, that sounds fun.
I hear exactly what you're talking about, and it it the one (and only) thing that bothers me about the AxeFx; it's like, on a medium or higher gain setting, there is an artifact---an unnatural buzz---that creeps in just as a sustained note begins to trail off.
I would love to have a way to dial this out.
+1 --- I've used nearly every modeler there is, including the 'K' toaster box, finally ending up with the ultimate (the AxeFx). Most if not all of them offer the advantage of amp-like realism without drawbacks like loud hum and even IM distortion.Good luck swimming against this particular tide. ;-)
I think this probably is normal for some amps. I know my regular amps don't do what I heard in the clip, either. When I have brought this up before, I have been told that all amps do that.
My reaction is kind of "So what?" This is a modeler, where we have "ideal" pentodes, preamp compression, and so forth. We can put drive pedals between the amp and a cabinet. So in many ways, already, we have flexibility that goes way beyond authenticity. Yet the stock line seems to be to adhere strictly to this particular authenticity.
I would love to have a way to dial this out. For now, best just to try to find an amp model that does it less. There are some.
Yep!Thanks for answer!Good luck swimming against this particular tide. ;-)
I think this probably is normal for some amps. I know my regular amps don't do what I heard in the clip, either. When I have brought this up before, I have been told that all amps do that.
My reaction is kind of "So what?" This is a modeler, where we have "ideal" pentodes, preamp compression, and so forth. We can put drive pedals between the amp and a cabinet. So in many ways, already, we have flexibility that goes way beyond authenticity. Yet the stock line seems to be to adhere strictly to this particular authenticity.
I would love to have a way to dial this out. For now, best just to try to find an amp model that does it less. There are some.
Actualy this preset is Jr.Blues.But any amp example from Jr. Blues to ODS-100 factory presets.The "buzziness" of IM is a function of the "hardness" of the clipping circuit. The first thing you need to do is determine what is distorting: preamp or power amp. Power amp distortion is typically harder than preamp distortion due to global negative feedback. If you are using a modern amp model, i.e. something with a Master Volume, then there is a very good chance you might be overdriving the virtual power amp. In this case simply lowering the Master Volume will reduce IM.
If it's preamp distortion then you can reduce Preamp Hardness or experiment with the Preamp Bias to change the distortion character.
The Axe-Fx II is extremely accurate. Understanding how real amps work will allow you to adjust things to achieve your ultimate tone.
To the OP: what amp model are you using? I will post a clip of the actual amp vs. the model and prove that the real amp does the same thing.
Also have preset with mix of ac20 and asf100 where is more expressed.My ODS 100 "lead" also have this "marshall rice" symptoms...Btw. I'm on q2.04 fw.Actualy this preset is Jr.Blues.But any amp example from Jr. Blues to ODS-100 factory presets.
You've been elected spokesperson? BTW, Cliff noted it is already controllable with existing parameters and gave a detailed explanation on doing so; doesn't sound like any change is necessary.MANY users will be thankfull if its possible to have parameter in amp block that decreases-incerases IM distortion.Is this possible?!?