1. Use a dual footswitch such as the ENGL Z-4, connecting it to the amp via a stereo cord equipped
with ¼" jack plugs. You can switch channels and Mid Shape via the dual footswitch connected
to port 18, Reverb Off/On and FX Loop off/on via the dual footswitch connected to port 17.
2. Use a MIDI switcher such as the ENGL Z11-S.A.C., connecting it to the amp via two stereo cords
equipped with ¼" jack plugs. The buttons on the switcher can serve to control Clean/Lead, Mid
Shape, Reverb and FX Loop. You can also program all kinds of switching setups to the various MIDI
program locations. Here's just one example: You could configure MIDI Preset #1 so that the Clean
channel and Reverb are on, while Mid Shape and M.V.B., are off. Then you could set MIDI Preset #2 up
so that Lead channel, Mid Shape, and FX Loop are on, while Reverb is off.
Whatever setups you decide to program, you can easily activate the desired configuration directly
via a MIDI board such as the ENGL Z-9, Z-12, or Z-15.
This type of control option is extremely versatile; we recommend it highly if you intend to use
the amp in conjunction with any MIDI system, including MIDI effects devices.
or
1. 2.
Wiring of Principal Connectors: Footswitch (17, 18)
and Balanced Line Output (21)
Your options for controlling the ENGL RockMaster or MetalMaster amp remotely:
Technical specifications are subject to change without notice.
ENGL Gerätebau GmbH
Internet: www.engl-amps.com or www.engl-amps.de
Text, design, graphics and layout by
Horst Langer, ENGL Amp Designer
Stereo
1/4" jack
tip: refer to *3
ring: refer to *2
sleeve: Ground (Shield)
Use a stereo
plug only!
Stereo
1/4" (TRS) plug
ring *2
tip *3
sleeve
Footswitch jack (17):
*2: A switch connected to this terminal controls
FX Loop: off < > on;
*3: A switch connected to this terminal controls
Reverb: off < > on;
Footswitch jack (18):
*2: A switch connected to this terminal controls
Mid Shape: off < > on;
*3: A switch connected to this terminal controls
Channel switching: Clean < > Lead;
Balanced Line Out jack (21):
*2: the ring carries an
- inverted ("cold") signal;
*3: the tip carries
+ the ("hot") signal with normal polarity;
ON/OFF ON/OFF
Tube Amplifier
WRITE
MIDI
CHANNEL
SWITCH
LOOP 1
S
WITCH
LOOP 2
S
WITCH
LOOP 3
S
WITCH
LOOP 4
S
WITCH
LOOP 5
S
WITCH
LOOP 6
MIDI SWITCHER
Footswitch
Tube Guitar Amplifier
RockMaster
20
Combo: Type E302
Head: Type E307
MetalMaster 20
Combo: Type E304
Head: Type E309
Amp-Design by
Horst Langer
ENGL Amps
Made In Germany
CAUTION !
!
REPLACE FUSE
ONLY WITH SAME
TYPE AND RATING !
R
Clean
/
Lead
Mid Shape
DO NOT OPEN !
RISK OF ELECTRIC SHOCK !
DO NOT EXPOSE THIS
EQUIPMENT TO
RAIN OR MOISTURE !
FX Loop
Send Return
8 - 16
Ohms
full power
Frequency
Comp.
Line Out
Balanced
Reverb
FX Loop
off
/
on
8 Ohms
serial
to jack A
Poweramp Output
8 - 16
Ohms
Power Soak
A: connect one
8 or 16 ohms speaker
to this output jack for
full output power.
Output C is disabled
once a plug is connected
to output jack A.
B: connect an additional
8 ohms speaker to
a 8 ohms speaker
connected to output A.
C: connect one
8 or 16 ohms speaker
to this output jack when
employing the Power Soak.
A B C
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