Engl Ironball Operator'S Manual Download Page 4

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Rear Panel

14 Mains Connector (AC Power Inlet; IEC - C14 connector)

Plug the mains cord in here. For European models, use a standard non-heating equipment
connector cable.

CAUTION:

Make sure you use an intact mains line cord with a grounded plug!

Before you power the amp up, ensure the voltage value printed on the label above
the mains socket is the same as the current of the local power supply or wall outlet.
Please also heed the guidelines set forth in the separately included pamphlet,
Instructions for the Prevention of Fire, Electrical Shock and Injury.

15 Mains Fuse Box:

The rear chamber contains the mains fuse and in the front chamber, a spare fuse.

CAUTION:

ALWAYS make sure replacement fuses are of the same type and have the same ratings

as the original fuse! Please refer to the fuse ratings table.

16 Footswitch M.V.B. (Master Volume Boost); Reverb:

Use this ¼" Stereo 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 switch

Master Volume

Boost

and

Reverb

off or on.

One of the two switches controls the M.V.B. feature; the other engages the internal Reverb.

M.V.B.

and the Reverb system are activated by default if you do not connect a footswitch

to this jack. Note also that a footswitch may be equipped with LEDs indicating the given switching
status. Each of the two switches is provided with about 10 milliamperes of current, which suffices
to power a standard LED. The jack's mono terminal (the tip) switches the

M.V.B.

and the stereo terminal (the ring) switches

Reverb

off and on.

For pin assignments, see "Wiring of Principal Connectors".

17 Footswitch Clean/Lead; Gain Boost:

Use this ¼" Stereo 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 two channels and

Gain Boost

One of the two switches activates Clean or Lead; the other engages

Gain Boost

Plugging a footswitch into this jack disables onboard channel (11) and Gain Boost (10) switching.
Note also that a footswitch may be equipped with LEDs indicating the given switching status.
Each of the two switches is provided with about 10 milliamperes current, which suffices to power
a standard LED. The jack's mono terminal (the tip) selects Clean or Lead, while the stereo terminal
(the ring) switches

Gain Boost

. For pin assignments, see "Wiring of Principal Connectors".

A Tip from the designer:

If you want to control the amplifier via a MIDI system, use jacks 16, 17

and a looper or MIDI switcher (such as the ENGL Z-11). Use two stereo ¼" cords to connect the
optionally available ENGL MIDI Switcher Z-11. You can then preset the four switching functions

Clean/Lead

Gain Boost

M.V.B.

and

Reverb Off/On

via the switcher, store your custom switching

setups as different MIDI programs, and activate the presets via a MIDI board such as the
ENGL Z-12. For more details, see the remote control options on the last page.

18 FX Loop Send:

Connect the FX Loop output to a signal processor's input/return jack

using the shortest possible shielded cord equipped with ¼" plugs.

19 FX Loop Return:

Connect the FX Loop input to a signal processor's output/send jack

using the shortest possible shielded cord equipped with 1/4" plugs.
Remark: The FX Loop is located between the preamp and power amp in the signal path.
Inserting a ¼" jack plug into the Return port interrupts the circuit between the preamp
and power amp.

20 Reverb Level:

Reverb intensity knob. Twist it to adjust the amount of reverb in the preamp.

Turn the Reverb control knob clockwise to increase the effect's intensity.
The signal remains completely dry when the knob is set to the position "0" (7 o'clock) or
if Reverb is deactivated via a footswitch.
You can switch the reverb unit on and off using a footswitch connected to jack (16).
The reverb unit is always on if you do not plug a footswitch into jack (16).
Note: A digital processor generates the reverb effect.

Footswitch

Clean/Lead

Gain Boost

Balanced

Line Output

FX Loop

Poweramp Output

M.V.B.

Reverb

Head-

phones

Reverb