Axe-Fx III Firmware 29.00 Release

BTU said:
So I've made a proper backup with all cabs working and load it to device. No missing cabs but I see some strange behavior: couple of cabs have very high output levels (my speakers were about to blow :tearsofjoy:). After restarting device all is ok...

You can see strange curves on pics below: 1st - right after loading and 2nd - after restarting. It seems like there something wrong with normalization, sometimes it zeros IR, sometimes gives it random "amplification".

And yes, factory cabs too, similar to 29 beta thread.

Update:
Not related to fw ver, same problem, with 28.08. Probably I should contact the support.
Click to expand...
Did you try a RANF during all of this?
 
Domct203 said:
Did you try a RANF during all of this?
Click to expand...
Yes (did it after every update)

I've restarted axe couple times after loading fw 29 again and no issues with user cabs now (checking all my 250+ after each restart)... But I think there could be a couple in factory banks that not working at that time... Checking all 2000+ every restart could be tiring)) Since it's random, could be an old problem that I didn't notice earlier
 
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BTU said:
So I've made a proper backup with all cabs working and load it to device. No missing cabs but I see some strange behavior: couple of cabs have very high output levels (my speakers were about to blow :tearsofjoy:). After restarting device all is ok...

You can see strange curves on pics below: 1st - right after loading and 2nd - after restarting. It seems like there something wrong with normalization, sometimes it zeros IR, sometimes gives it random "amplification".

And yes, factory cabs too, similar to 29 beta thread.

Update:
Not related to fw ver, same problem, with 28.08. Probably I should contact the support.
Click to expand...

Yes, contact support. Good thing you documented those curves.
 
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BTU said:
So I've made a proper backup with all cabs working and load it to device. No missing cabs but I see some strange behavior: couple of cabs have very high output levels (my speakers were about to blow :tearsofjoy:). After restarting device all is ok...

You can see strange curves on pics below: 1st - right after loading and 2nd - after restarting. It seems like there something wrong with normalization, sometimes it zeros IR, sometimes gives it random "amplification".

And yes, factory cabs too, similar to 29 beta thread.

Update:
Not related to fw ver, same problem, with 28.08. Probably I should contact the support.
Click to expand...
I noticed one mic placement for a factory cab was extremely loud compared to the other mic placements of the same cab. If I come across it again, I'll post the specific cab, but I can attest to experiencing the same behavior. This was on the beta.
 
So I "know" that the Supro Magick was done correctly; however, it seems a bit dark tonewise on the #2 strat settings. Yes, I can turn up the treble and raise the capacitance setting. What I don't know, since I never owned one of these amps, is whether that's normal for the amp played with a Strat on the #2 setting. Or lol, is this just my old ears?
 
spikey said:
So I "know" that the Supro Magick was done correctly; however, it seems a bit dark tonewise on the #2 strat settings. Yes, I can turn up the treble and raise the capacitance setting. What I don't know, since I never owned one of these amps, is whether that's normal for the amp played with a Strat on the #2 setting. Or lol, is this just my old ears?
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The amp name was changed at the request of Supro to reflect the actual name of amp. I would say that is a pretty good indication that the amp behaves authentically and that is normal behavior.
 
I dialed Supro Magick eq for my taste in ideal settings: bass 2, middle 5, treble 7, cut switch on, also bright switch on, and fat switch on 😅 But seems like it is on the darker side... No idea about the real thing
 
eloygperez said:
Finally. I completely agree. It sounds like it did on 28.02 again, but even less choked on the palm mutes and more open. I'm going to compare it with my Block Letter shortly, but great job!

28.02


29.00 beta


29.00 release
Click to expand...

Cool tones! What does your preset look like for this? Are you using stock cabs or third party IRs? Any boosts? Curious about the guitar and pickups too!
 
eloygperez said:
Finally. I completely agree. It sounds like it did on 28.02 again, but even less choked on the palm mutes and more open. I'm going to compare it with my Block Letter shortly, but great job!

28.02


29.00 beta


29.00 release
Click to expand...

I thought I would jump in here and try to add something to the appreciation for the attention to detail that Fractal provides to us almost continuously. While Cliff certainly does not have the time to explain the details of everything that he pays attention to on a daily basis, it's worth mentioning that one simple line in the release notes about correcting a plate resistor value in the 6160 series does not do justice to how important these things are to how the result can affect the sound of the amplifier. He didn't mention WHICH plate resistor he was referring to and it really doesn't matter for this discussion. But suffice it to say that the "6160" has several 12AX7 triode gain stages in the preamp and most of the tone producing signal path uses stages configured with either with a 100k or a 220k plate (load) resistor.

Since at least one person has asked in this thread what a plate resistor even is... simply stated, it is the load resistance placed between the power supply for the stage and the plate structure inside the triode. As the tube draws variable current from the power supply (which is controlled by the input signal on the grid of the triode), the voltage drop/increase across the plate resistor (relative to its idle bias point) represents the amplified signal of the stage that is output to whatever next stage is in line in the design of the preamp. The value of the plate load resistor thus determines the path that the current vs. voltage traverses across the plate response curves for the triode stage. This response function is non-linear in a tube device meaning that an equal proportion of change in current does not necessarily mean an equal change in the resulting voltage. This non-linearity is all part of the sound of a tube that we all appreciate.

In any case, a simple... let's say a cut and past error in the model code, that accidentally uses a 100k plate load value when it should have been a 220k (or vice versa) can have quite an effect on the response of that stage and yes can be quite noticeable in the sound of the preamp. The reason for this can get quite complex, especially depending on which gain stage (or stages) we are talking about in any particular amplifier. If you would like to understand how to unravel this, I have attached a document that provides much of the gory detail. It uses as an example, the input stage as configured in Fender AB763 type amplifier. However, the principles are all the same for any 12AX7 stage. I apologize for the density of it all up front. But if you are really interested, you have to fight past that to really appreciate what Cliff and Fractal are really doing here to model this stuff. To quote the sardonic author of that old tune Don't Let It Bring You Down, "It sorta starts off real slow and then fizzles out altogether."
 

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tealtonerick said:
I thought I would jump in here and try to add something to the appreciation for the attention to detail that Fractal provides to us almost continuously. While Cliff certainly does not have the time to explain the details of everything that he pays attention to on a daily basis, it's worth mentioning that one simple line in the release notes about correcting a plate resistor value in the 6160 series does not do justice to how important these things are to how the result can affect the sound of the amplifier. He didn't mention WHICH plate resistor he was referring to and it really doesn't matter for this discussion. But suffice it to say that the "6160" has several 12AX7 triode gain stages in the preamp and most of the tone producing signal path uses stages configured with either with a 100k or a 220k plate (load) resister.

Since at least one person has asked in this thread what a plate resister even is... simply stated, it is the load resistance placed between the power supply for the stage and the plate structure inside the triode. As the tube draws variable current from the power supply (which is controlled by the input signal on the grid of the triode), the voltage drop/increase across the plate resister (relative to its idle bias point) represents the amplified signal of the stage that is output to whatever next stage is in line in the design of the preamp. The value of the plate load resistor thus determines the path that the current vs. voltage traverses across the plate response curves for the triode stage. This response function is non-linear in a tube device meaning that an equal proportion of change in current does not necessarily mean an equal change in the resulting voltage. This non-linearity is all part of the sound of a tube that we all appreciate.

In any case, a simple... let's say a cut and past error in the model code, that accidentally uses a 100k plate load value when it should have been a 220k (or vice versa) can have quite an effect on the response of that stage and yes can be quite noticeable in the sound of the preamp. The reason for this can get quite complex, especially depending on which gain stage (or stages) we are talking about in any particular amplifier. If you would like to understand how to unravel this, I have attached a document that provides much of the gory detail. It uses as an example, the input stage as configured in Fender AB763 type amplifier. However, the principles are all the same for any 12AX7 stage. I apologize for the density of it all up front. But if you are really interested, you have to fight past that to really appreciate what Cliff and Fractal are really doing here to model this stuff. To quote the sardonic author of that old tune Don't Let It Bring You Down, "It sorta starts off real slow and then fizzles out altogether."
Click to expand...
So... It acts like a Knock Sensor in automobiles? It actually response for giving the correct current when a signal arrives?
 
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