Operator`s manual

switches activates , while the other selects the control (19) or
(20) in the Lead channels; it alters the mid range frequency response
during Clean and Crunch modes. Plugging a footswitch into this jack disables onboard
(24) switching.
Note also: A footswitch may be equipped with LEDs indicating the given switching
status. Each of the two switches is provided with approx. 10 milliamperes current,
which suffices to power a standard LED. The jack's mono terminal selects ,
while the stereo terminal controls the Middle-voiced feature (for pin assignments, see
page ).
Use this jack to connect a conventional footswitch with two switching functions, for
example, the ENGL Z-4 (2 x off/on - Single Pole Single Throw or SPST for short). This
type of footswitch lets you access the four channels. One of the two switches
, while the other switch
. Plugging a footswitch into this jack disables onboard channel
(25, 26) switching.
Note also: A footswitch may be equipped with LEDs indicating the given switching
status. Each of the two switches is provided with approx. 10 milliamperes current,
which suffices to power a standard LED. The jack's mono terminal selects channel
Up/Down switching, while the stereo terminal controls Clean/Crunch and Lead Ch 3/
Lead Ch 4 feature (for pin assignments, see page ).
This control knob activates an onboard Noise Gate serving to suppress excess noise in
the two Lead channels and when you twist it to the right, near or
just beyond the 9 o'clock position.
In addition the Noise Gate can be controlled remotely (on/off) via a footswitch
connected to jack 34 (for details refer to chapter 34) or via the ENGL Custom
Footswitch Z-9 (refer to chapter 33 for details). The precondition for a Noise Gate
remote control via footswitch is a setting at the Threshold knob beyond the 9 o'clock
position (primary activation).
Use this knob to set a threshold value (that is, the noise level) at which the Noise Gate
activates to suppress the signal within the 9 to 5 o'clock range. The further you twist
the knob to the right, the higher the signal level at which the Noise Gate kicks in. If you
set the knob to the 5 o'clock position, the Noise Gate reacts to extremely high noise
levels, meaning that there's not much of a margin between the guitar signal and
background noise.
Noise is a definite no-no in many situations. For example, studio etiquette demands
that you keep a lid on extraneous noise during short breaks. It's in the nature of high-
gain rigs to generate undesirable peripheral noise in overdriven (high gain) channels.
This is attributable to the physical properties of an amp's constituent components, in
particular its active components. That's right; those cherished tubes are the culprits.
The Noise Gate is a tool that lets you silence this noise during breaks by way of signal
mute circuit. Note that electric guitars pick up interference signals, and these are
Middle
Middle-voiced
Middle-voiced
Lead Ch 3 Lead Ch 4
36 Footswitch: Channel Up/Down, 1/2 - 3/4
37 NOISE GATE THRESHOLD LEVEL
A tip from the designer:
Master A or B
Master A/B
23
selects
between the upper arranged channels and the channels arranged in the control row
below selects between and or it selects between
and
23
Clean Crunch
Lead Ch 3 Lead Ch 4
15