M
mrgodin
Guest
Ich hab die jeweiligen Fragen mal weggelassen.
Kann man ggf. im Forum nachlesen.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439816
You'll never get the knobs to correspond exactly. Commercial quality potentiometers are terrible. They vary widely in both end-to-end resistance and resistance at midpoint. Variations of /- 20% are common (that's 40% total!!!). The Axe-Fx always assumes an ideal potentiometer, i.e. a pot where the end-to-end and midpoint resistances are exactly the specified value. Furthermore commercial "audio taper" pots are not truly logarithmic. They use a crude piecewise approximation. The virtual pots in the Axe-Fx are true log.
This is the #1 reason for the whole "no two amps sound the same". In fact they probably do sound the same but you need to adjust the pots on one (and possibly quite a bit) to make it sound like the other. For example if a tone control is at noon (5.00) on one amp you may need to set the other amp to anywhere from 3.00 to 7.00. This applies to any product that uses potentiometers, including drive pedals.
This also means when matching any virtual amp/drive/etc. in the Axe-Fx to a real-world counterpart that you may need to deviate significantly to get the same sound. For example, to get our reference Dual Rectifier's orange channel to match the model I need to set the model's treble control to around 4.0 (with the amp's treble at noon). This is because the pot in the amp has a significant deviation from the intended resistance at the midpoint. It's a 250K linear taper pot but it reads around 100K/150K when set to the midpoint. This is quite typical of commercial quality pots.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439868
The models match the aggregate of the real amps and match what the designer originally intended.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439875
I don't think you understand.
Let's say the taper of a treble pot is linear. The biggest variation is midpoint resistance, which can vary /- 20%. On one amp it might be -10%, on the next one off the assembly line it might be 10%. The Axe-Fx assumes 0%. Simple as that. That's what the aggregate is and what the designer originally intended.
When we match to our reference amps we adjust the knobs on the Axe-Fx to compensate for these things. IOW, if our reference amp's treble pot is -10% at the midpoint we reduce the treble knob accordingly on the model when checking the model's accuracy.
Kann man ggf. im Forum nachlesen.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439816
You'll never get the knobs to correspond exactly. Commercial quality potentiometers are terrible. They vary widely in both end-to-end resistance and resistance at midpoint. Variations of /- 20% are common (that's 40% total!!!). The Axe-Fx always assumes an ideal potentiometer, i.e. a pot where the end-to-end and midpoint resistances are exactly the specified value. Furthermore commercial "audio taper" pots are not truly logarithmic. They use a crude piecewise approximation. The virtual pots in the Axe-Fx are true log.
This is the #1 reason for the whole "no two amps sound the same". In fact they probably do sound the same but you need to adjust the pots on one (and possibly quite a bit) to make it sound like the other. For example if a tone control is at noon (5.00) on one amp you may need to set the other amp to anywhere from 3.00 to 7.00. This applies to any product that uses potentiometers, including drive pedals.
This also means when matching any virtual amp/drive/etc. in the Axe-Fx to a real-world counterpart that you may need to deviate significantly to get the same sound. For example, to get our reference Dual Rectifier's orange channel to match the model I need to set the model's treble control to around 4.0 (with the amp's treble at noon). This is because the pot in the amp has a significant deviation from the intended resistance at the midpoint. It's a 250K linear taper pot but it reads around 100K/150K when set to the midpoint. This is quite typical of commercial quality pots.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439868
The models match the aggregate of the real amps and match what the designer originally intended.
http://forum.fractalaudio.com/threads/so-about-that-new-si-diode-clipping-in-q5-xx-drive-block.120955/page-2#post-1439875
I don't think you understand.
Let's say the taper of a treble pot is linear. The biggest variation is midpoint resistance, which can vary /- 20%. On one amp it might be -10%, on the next one off the assembly line it might be 10%. The Axe-Fx assumes 0%. Simple as that. That's what the aggregate is and what the designer originally intended.
When we match to our reference amps we adjust the knobs on the Axe-Fx to compensate for these things. IOW, if our reference amp's treble pot is -10% at the midpoint we reduce the treble knob accordingly on the model when checking the model's accuracy.
Zuletzt bearbeitet von einem Moderator:
Was is'n da los, der ist jetzt viel leiser