Axe-Fx III Firmware 28.05 Public Beta

[tripulante.db]

I only had a short time to work with it, but I did get to test this beta with my two main user presets. The sound is brighter, and I needed to lower the treble a bit on one of them to make it more palatable to my ears. I still need to spend time on it, but this was my first impression.

 

[yek]

Post 68: It’s less bright!

Post 101: It’s more bright!

Fractal Audio: sigh

 

[biggness]

Post 68: It’s less bright!

Post 101: It’s more bright!

Fractal Audio: sigh

Could depend on if the respective posters are using cold clipping based amps or not to be fair

 

[BROCKSTAR]

Post 68: It’s less bright!

Post 101: It’s more bright!

Fractal Audio: sigh

Can't satisfy all the ears out there lol

 

[GuitarManiac32]

Yeah, but you can still try adjusting the knobs, maybe the tone turn out awesome and even better than before

 

[sprint]

Could depend on if the respective posters are using cold clipping based amps or not to be fair

Despite searching, I'm still confused about what specific amp model characteristics would identify it as a "cold clipping" amp? (as I understand it: a smooth / early breakup type tone, but what circuit attributes lead to that?).

 

[FractalAudio]

Could depend on if the respective posters are using cold clipping based amps or not to be fair

Or it could simply be that we hear things differently from day-to-day.

 

[FractalAudio]

Post 68: It’s less bright!

Post 101: It’s more bright!

Fractal Audio: sigh

It doesn't bother me. It happens every time. All that matters is that the amps test more accurate than before.

The output transformer improvement has eliminated something that has baffled me for years. Previously I would always measure a slight dip in the midrange response relative to the real amp. Not a lot, around 0.5 dB but still not perfect. I finally figured out what was causing this.

 

[biggness]

Or it could simply be that we hear things differently from day-to-day.

True, and even influenced by the previous day’s sounds, which position you slept in, pulsatile tinnitus, blood pressure, sinus pressure, and even just waking up on the wrong side of the bed that day lol

 

[FractalAudio]

Any Eye on the mesa Mark iv and iic+ triode plate frequency? They are set very different from the ones in the axe FX 2 and also compared to the jp2c..

I retested the Mark IV Lead models yesterday and the triode plate frequencies are wrong. They have been remastered for the next firmware and sound better than ever.

 

[FractalAudio]

True, and even influenced by the previous day’s sounds, which position you slept in, pulsatile tinnitus, blood pressure, sinus pressure, and even just waking up on the wrong side of the bed that day lol

Environmental factors too: humidity is a big one.

 

[biggness]

Despite searching, I'm still confused about what specific amp model characteristics would identify it as a "cold clipping" amp? (as I understand it: a smooth / early breakup type tone, but what circuit attributes lead to that?).

Rectos
Solodano
Some Mark series
5150s

Few off the top of my head IIRC

 

[Fab8040]

Thank you

I retested the Mark IV Lead models yesterday and the triode plate frequencies are wrong. They have been remastered for the next firmware and sound better than ever

 

[Fab8040]

I retested the Mark IV Lead models yesterday and the triode plate frequencies are wrong. They have been remastered for the next firmware and sound better than ever

A/b also with the iic++ or iic+ i dont Remember there was a differences... I ll check It out also that

 

[FractalAudio]

Despite searching, I'm still confused about what specific amp model characteristics would identify it as a "cold clipping" amp? (as I understand it: a smooth / early breakup type tone, but what circuit attributes lead to that?).

Usually it's the second-to-last gain stage is biased very positive. This is accomplished using a large cathode resistor.

The first amps to have a cold-clipping stage were the JCM800s with a 10K cathode resistor. Soldano took it a step further and increased the cathode resistor to 39K. Mesa copied the Soldano design for the Dual Rectifier.

The last stage in a Trainwreck is a cold-clipping stage with a 10K cathode resistor.

5150s have a cold-clipping stage with a 39K resistor but it's third-to-last.

Cold clipping achieves several things: It gives you a bit of dirt when turning down the volume. It reduces the bias excursion of the following stage. It increases the negative feedback on that stage so the clipping characteristics are different.

 

[drw1304]

Post 68: It’s less bright!

Post 101: It’s more bright!

Fractal Audio: sigh

 

[Adman103]

Environmental factors too: humidity is a big one.

This is a huge factor. Dry air is more dense than relatively moist air, so not only does humidity affect the speed of sound, but the level of attenuation of the air as well. Dry air has a greater attenuation coefficient than moist air.

 

[lscottk]

This is a huge factor. Dry air is more dense than relatively moist air, so not only does humidity affect the speed of sound, but the level of attenuation of the air as well. Dry air has a greater attenuation coefficient than moist air.

This is interesting. Intuitively, I would have assumed that humid air is heavier. It certainly feels heavier when I lived in a humid climate. However, according to the interwebs, your statement is correct:

"Dry air is indeed denser than humid air at the same temperature and pressure. This is because when humidity increases, some of the oxygen and nitrogen molecules in the air are displaced by water vapor, which has a lower molecular weight. As a result, the overall mass in a given volume decreases, leading to a lower density for humid air.

The misconception that humid air feels "thicker" or heavier can be attributed to the body's response to humidity. In humid conditions, the rate of evaporation from the skin decreases, making it harder for the body to cool down, which can create a sensation of discomfort or heaviness.

Density=Mass/volume

Since humid air has a lower mass for the same volume, its density is lower compared to dry air."

 

[painkiller]

This is interesting. Intuitively, I would have assumed that humid air is heavier. It certainly feels heavier when I lived in a humid climate. However, according to the interwebs, your statement is correct:

"Dry air is indeed denser than humid air at the same temperature and pressure. This is because when humidity increases, some of the oxygen and nitrogen molecules in the air are displaced by water vapor, which has a lower molecular weight. As a result, the overall mass in a given volume decreases, leading to a lower density for humid air.

The misconception that humid air feels "thicker" or heavier can be attributed to the body's response to humidity. In humid conditions, the rate of evaporation from the skin decreases, making it harder for the body to cool down, which can create a sensation of discomfort or heaviness.

Density=Mass/volume

Since humid air has a lower mass for the same volume, its density is lower compared to dry air."

Avogadro's law is to blame: Regardless of which gas is involved, a certain volume always contains the same number of gas molecules. The molar mass of air is larger than molar mass of water, which is why dry air is actually denser.

 

[BROCKSTAR]

Usually it's the second-to-last gain stage is biased very positive. This is accomplished using a large cathode resistor.

The first amps to have a cold-clipping stage were the JCM800s with a 10K cathode resistor. Soldano took it a step further and increased the cathode resistor to 39K. Mesa copied the Soldano design for the Dual Rectifier.

The last stage in a Trainwreck is a cold-clipping stage with a 10K cathode resistor.

5150s have a cold-clipping stage with a 39K resistor but it's third-to-last.

Cold clipping achieves several things: It gives you a bit of dirt when turning down the volume. It reduces the bias excursion of the following stage. It increases the negative feedback on that stage so the clipping characteristics are different.

I love your nerdy talk lol