Preshape Switch
The PRESHAPE filter lowers a certain mid range spectrum thus the lower end and the upper frequency
range gets emphasized stronger when this function is activated.
The Preshape sound option can also be switched via MIDI program change, MIDI Controller #21, or the ENGL
Z9. The red LED above the button lights up to indicate when PRESHAPE is activated.
A TIP FROM THE DESIGNER:
this pecisely tuned preshape filter system is ideally suited to influence the
fundamental tonal response in the preamp circuit in order to get different favoured sound results. In con-
junction with the CONTOUR feature and the two Mid control knobs MID LEAN and MID BOLD you get mighty
control over a broad mid range spectrum which greatly enlarges the tonal flexibility for the two Channels
Clean and Crunch I.
Crunch I Gain
Gain control for the Crunch I Channel. This knob determines the preamp‘s input sensitivity when Crunch I
Channel is selected and, by extension, the preamp signal´s saturation level.
Contour Switch
The CONTOUR feature alters some parameters and the efficiency of the EQ system in Clean / Crunch I and
mainly becomes audible in the lower mid range area between 300 and 700 Hz and to some degree in the
upper frequency range between 1.5 and 3 KHz. Activate CONTOUR for a pronounced mid range spectrum.
The Contour sound option can also be switched via MIDI program change, MIDI Controller #27, or the ENGL
Z9. The red LED above the button lights up to indicate when CONTOUR is activated.
A TIP FROM THE DESIGNER:
in a certain acoustical way, the CONTOUR feature inverses the job of PRESHAPE
but it influences different mid frequencies compared to the preshape filter. From the technical aspect the
coutour function influences the operation mode of the EQ system, mainly the mid control range. If you desi-
re to get a strong mid frequency notch with a massive but defined bottom end and focused treble activate
PRESHAPE and leave CONTOUR off and at the same time use the MID LEAN control to adjust the amount of
mid frequecy portions in the tonal mix. For a pronounced mid frequency range leave PRESHAPE off, activate
CONTOUR and the MID BOLD control knob.
Bass
This is the preamp voicing section´s passive low-frequency EQ for Clean and Crunch I.
Mid Lean
This mid control of the passive EQ in Clean and Crunch I - can be selected via the MID LE./BO. button, at
setting „off“. The MID LEAN control inluences a different accentuated mid frequency range compared to the
MID BOLD control thus the tonal results are unequal at identical control knob settings.
Mid Bold
This mid control of the passive EQ in Clean and Crunch I - can be selected via the MID LE./BO. button, setting
„on“. The MID BOLD control inluences a different accentuated mid frequency range compared to the MID
LEAN control thus the tonal results are unequal at identical control knob settings.
