Differences between the Fender Tonestack Types at the AMP block

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Axe-Master
I am trying to understand the differences between the Fender Tonestacks at the Axe-FX.

I have identified six, and I have made the following assumptions:

65 Bassman Bass
Axe-FX Amp: 65 Bassguy
Real name: Bassman 1965
Schematic: Bassman AB165
Bassman-AB165.png


Bassguy
Axe-FX Amp: 59 Bassguy?
Real name: Tweed Bassman, 5F6-A
Schematic name: Bassman 5F6-A
Bassman-5-F6-A.png


Brownface
Axe-FX Amp: PrinceTone Reverb?
Real name: Princeton Reverb
Schematic: Princeton Reverb AA164
Princeton-Reverb-AA164.png


Vibrato-King
Axe-FX Amp: Vibra King
RealName: Vibro-King
Schematic: Vibro-King D041253
Vibro-King.png


Vibrato-Lux
Axe-FX Amp: Vibrato Lux
RealName: Vibrolux, 6G11
Schematic: Vibrolux AA270
Vibrolux-AA270.png


Vibroverb AA
Axe-FX Amp: Vibrato Verb AA
RealName: Vibroverb Blackface
Schematic: Vibroverb AA763
Vibroverb-AA763.gif


They all have identical topology. Component values are similar, except for the Vibro-King and the 1M pot at the Bass of the 59 Bassguy. The Mid fixed resistor is 6k8 with the Axe-FX Mid knob at noon, and the Deep/Bright switches are supposed to be the Fat and Bright switches at the Axe-FX.

I did not notice differences from a quick audition.
 
Last edited:
Download the Duncan Tone Stack Calculator. http://www.duncanamps.com/tsc/

You can enter in the different component values and see the differences in the EQ curve between the different versions as you move the controls. Many of the component changes are fairly subtle.
 
I don't know if the Axe FX FAT is the same as the DEEP on those amps. The Fat switch came from the Mesa Mark series amps to my knowledge, (which had separate bass shift and deep switches).

Fat shifts the treble frequency down into the midrange some on the Axe, it doesn't extend the bass response. Unless I'm mistaken.

1600099446413.png
 
I am trying to understand the differences between the Fender Tonestacks at the Axe-FX.

I have identified six, and I have made the following assumptions:

65 Bassman Bass
Axe-FX Amp: 65 Bassguy
Real name: Bassman 1965
Schematic: Bassman AB165
Bassman-AB165.png


Bassguy
Axe-FX Amp: 59 Bassguy?
Real name: Tweed Bassman, 5F6-A
Schematic name: Bassman 5F6-A
Bassman-5-F6-A.png


Brownface
Axe-FX Amp: PrinceTone Reverb?
Real name: Princeton Reverb
Schematic: Princeton Reverb AA164
Princeton-Reverb-AA164.png


Vibrato-King
Axe-FX Amp: Vibra King
RealName: Vibro-King
Schematic: Vibro-King D041253
Vibro-King.png


Vibrato-Lux
Axe-FX Amp: Vibrato Lux
RealName: Vibrolux, 6G11
Schematic: Vibrolux AA270
Vibrolux-AA270.png


Vibroverb AA
Axe-FX Amp: Vibrato Verb AA
RealName: Vibroverb Blackface
Schematic: Vibroverb AA763
Vibroverb-AA763.gif


They all have identical topology. Component values are similar, except for the Vibro-King and the 1M pot at the Bass of the 59 Bassguy. The Mid fixed resistor is 6k8 with the Axe-FX Mid knob at noon, and the Deep/Bright switches are supposed to be the Fat and Bright switches at the Axe-FX.

I did not notice differences from a quick audition.
Different component values and/or pot tapers.

The following are the Fender tonestacks:
Brownface: Brownface Vibroverb
Blackface: Blackface Twin Reverb
Bassguy: 59 Bassman
Jr. Blues: Blues Junior
Super Verb: Super Reverb
BF Fixed Mid: Blackface with fixed mid resistor (6.8K)
Vibrato-King: Vibro-king
Vibrato-Lux: VibroLux
Vibroverb AA: AA763 Vibroverb
Super 6G4: Super Amp 6G4
65 Bassman Bass: Bass channel of 65 Bassman
Band-Commander: Blackface Bandmaster
 
Different component values and/or pot tapers.

The following are the Fender tonestacks:
Brownface: Brownface Vibroverb
Blackface: Blackface Twin Reverb
Bassguy: 59 Bassman
Jr. Blues: Blues Junior
Super Verb: Super Reverb
BF Fixed Mid: Blackface with fixed mid resistor (6.8K)
Vibrato-King: Vibro-king
Vibrato-Lux: VibroLux
Vibroverb AA: AA763 Vibroverb
Super 6G4: Super Amp 6G4
65 Bassman Bass: Bass channel of 65 Bassman
Band-Commander: Blackface Bandmaster

Thank you for the clarification :)
 
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