Engl INVADER II Operator's Manual page 13

A tip from the designer:
To help you get acquainted with the amp's fundamental sounds, I recommend that
you set all tone controls to about the center or 12 o'clock position. For higher-gain,
high-volume lead sounds, your best bet is to turn the Treble knob down to prevent the
pickups and speakers from generating feedback (a setting in the 10-to-1 o'clock range
is recommended).
Each channel is equipped with a dedicated EQ so you can tweak its sound separately to
suit your taste and the given sonic scenario. Bear in mind that you also have the Sound
(1) button, as well as the two power amp Presence (14) and Depth Punch (15) knobs,
at your disposal for shaping the frequency range.
Though this passive voicing section's controls range is narrower than that of a
comparable active system, its EQ curve is tweaked specifically for its designated
purpose, and will give you satisfying results.
24 Volume 2
Volume control for Channel 2's preamp section. Use this knob to adjust the volume of
Channel 2's preamp and dial in the desired balance with the other three channels'
levels. Because this knob is located pre effects loop, it also determines the send levels
for both FX loops when Channel 2 is selected. The yellow LED to the right of the knob
lights up to indicate Channel 2 is on. Use the knob (57) on the amp's rear panel to
balance out the relative volumes of High Gain and Low Gain modes.
25 CH 2
Press this button to activate the preamp's Channel 2 at the amp. The yellow LED to the
right of the Channel 2 Volume knob (24) lights up to indicate Channel 2 is active.
Channel 2 may also be activated via MIDI program change, the ENGL Custom Z-9
Footswitch, or a dual footswitch.
26 Gain 4
Gain control for Channel 4's preamp section. This knob determines the preamp's input
sensitivity when Channel 4 is selected and, by extension, the preamp signal's saturation
level.
A tip from the designer:
Depending on Gain knob, Gain option (19) and Sound option (1) settings, Channel 4's
gain ranges from massive to borderline ridiculous, which translates to big power
chords and mean leads. Note that Channel 4's midrange is scooped - that is, not as
dominant as Channel 3's - lending Channel 4 a distinctive tone quite unlike the other.
C hannel 4 has plenty of headroom, so I recommend setting the Gain knob to
somewhere between 8 and 1 o'clock. This will let you dial in impressive sounds with
preamp saturation figuring prominently in the tone. The High Gain function comes in
especially handy in conjunction with Gain settings below 12 o'clock because you can
use it to shape and access two distinctly different tones.
Extremely high gain and volume levels in Channel 4 can produce powerful
CAUTION:
feedback. Avoid feedback squeals; they can lead to hearing loss and damage
speakers! At higher volumes, back off the Gain, Treble and Presence levels in order to
prevent unchecked feedback!
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