The VOLUME A/B switching feature can be used for the following applications:
1) In combination with one preamp, to activate two different volumes, for instance
one for rhythm work, the other for soloing.
2) In combination with two preamps, to define a separate volume level for each
preamp. In this case, set the button 32 to the VOLUME A/B mode, then VOLUME A
is assigned to INPUT A and VOLUME B is assigned to INPUT B automatically.
3) In combination with two preamps, to define separate volume levels than can be
assigned to either preamp. Set button 32 to the INPUT A/B mode so you can assign
the volume levels freely to the two inputs. In this case select inputs via the
INPUT A/B button(11).
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The PRESENCE A/B switching feature can be used for the following applications:
1) In combination with a two-channel preamp (Clean/Lead) a possible option could be
a setting of 1 to 4 o´clock for the two PRESENCE A controls and a setting of 8 to 12 o´clock
for the two PRESENCE B controls. Use PRESENCE A when the preamp is in the clean mode,
and PRESENCE B for lead tones.
2) In combination with two preamps, to define a separate PRESENCE setting for each
preamp, or
3) to assign the PRESENCE controls freely to the two preamps.
If you encounter a ground loop in your 19" rack (usually caused by a double connection
between grounded devices and the audio signal ground), you can sever the ground from
the housing by setting the GROUND LIFT switch to the GROUND FLOATED position.
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The ENGL MIDI INTERFACE offers even more comfortable handling features and loads of
interesting combinations. This interface allows you to switch the four defined functions via
a MIDI stage board. You can also save diverse sound combinations as presets in up to
99 MIDI memory locations, assign polychannels 1-8 via the interface and control another
ENGL device, equiped with the MIDI Interface Port.
The switching functions VOLUME A/B (3), PRESENCE A/B (8), INPUT A/B (11) and DEPTH BOOST
(12) can also be executed via a looper/switcher or other MIDI devices that feature four
freely-programmable (switching-)inputs. Depending on the type of MIDI device, you may have
to split the FOOTSWITCH stereo jacks into four mono jacks. Each switching function requires
the mono or stereo contact see 26 and 27 for assignments and the ground!
NOTE! If the switching and signal grounds are identical in the MIDI device, then you may
encounter a ground loop, especially if the amp and device (e.g. FX processor) exchange signals!
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The MASTER FX LOOP offers you the opportunity to run two preamps through an FX processor
without requiring a separate complex looping system!
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Choose only one of the following cabinet options for each channel:
A. One 4 ohm cabinet connected to a 4 ohm jack,
B. Two 8 ohm cabinets connected to the 4 ohm jacks,
C. One 8 ohm cabinet connected to a 8 ohm jack,
D. Two 16 ohm cabinets connected to the 8 ohm jacks,
E. One 16 ohm cabinet to the 16 ohm jack.
If you are using one stereo speaker cabinet for both channels, ensure it actually operates
in the stereo mode, otherwise you may damage the power amp!
