Engl Invader 100 User manual

Operator´s Manual

Please, first read this manual carefully!

4 Channel Full Tube

Guitar Amplifier

with MIDI-Control

INV

DER

Tube

Amp

Technology

Tube

Amp

Technology

Table of Contents

page

Introduction

Features and Functionality at a Glance

Contents

Front Panel Features:

Rear Panel Features:

Practical Info and Tips

Glossary

Troubleshooting

Technical Data,

Tube Map, Tube Exchange Service

Wiring of Principal Connectors

Remote Control Options

Front Panel Diagrams for Noting Settings

Note:

Handling and Care

Bright

Channel 1: Gain 1, Bass, Middle, Treble, Volume 1, CH 1

Channel 2: Gain 2, Bass, Middle, Treble, Volume 2, CH 2

Power Amp EQ: Presence A/B, Depth Boost

FX Loop I/II, Noise Gate

Input, Hi Gain

Channel 3: Gain 3, Bass, Middle, Treble, Volume 3, CH 3

Channel 4: Gain 4, Bass, Middle, Treble, Volume 4, CH 4

Power Amp section: Master A/B

Write/Copy, Amp Mute

Stand By, Power

Ground Lift Switch

Pre Out, Line Out

Poweramp Output: speaker options

Mains, Mains Fuse,

MIDI Section and Footswitch Ports

Detailed Specifications and Ratings

You'll find an ancillary pamphlet accompanying this owner's manual entitled

Instructions for the Prevention of Fire, Electrical Shock and Injury. Be sure to read it

before you plug in and power up the amp!

Technical specifications are subject to change without notice.

Noise Gate: Threshold Level

FX Loops I and FX Loop II: Send, Return, and Balance

Power Amp Output, 4, 8, 16 Ohms

Configuration table for Z-9 settings

CAUTION! Please read and heed the following:

Status-LED: Indications

6, 7

7, 8

10, 11

11, 12

12, 13

13, 14

14, 15

16 - 19

19, 20

21 - 24

24, 25

27, 28

Congratulations InVader tube-powered head

extraordinarily versatile state-of-the-art design

packing a powerful punch contemporary traditional vintage

tones finest tube flavors

on your choice! With the , you

now own an guitar amp. Featuring a

and , it delivers both and

in the and quality!

This marries the unrivalled tone of to

the awesome sound-shaping might of control features powered by

. This elegant combination puts at your fingertips

and an all but inexhaustible reservoir of compelling

variations all of which may be .

1. a logical control feature array, utmost and

;

2. and courtesy of the many

voicing options and special features, and 128 MIDI presets offering a bevy of

programming options;

sophisticated guitar amp all-tube technology

state-of-the-art

microchip circuitry a vast range of

great fundamental tones

controlled remotely via MIDI

ease of use remarkably intuitive

handling

excellent sound-shaping options greatest flexibility

The InVader amp offers - tweaked to

for various styles and playing techniques, for instance, Channel 3 for

and an power chords; Channel 4 for with an

. All four channels offer Lo Gain / Hi Gain switching, as well as

dedicated Gain and Volume knobs and a 3-band EQ for each channel that give you an

even greater range of sound-sculpting options. The tonal palette ranges from

to , and from with

to the kind of it takes to cut through in

What's more, the amp boasts a host of hip & practical features:

is a powerful option that has proven its merits in countless

ENGL amps (it has featured in E920 power amps since the late '80s and in the

legendary SAVAGE 120 head since '93!). Your head also sports

and a .

As an alternative to operating the amp remotely via a such as the

ENGL Z-15, you can also plug in an ENGL and manipulate

key functions directly. What's more, the amp comes with a stereo jack designed to take

an or a switching system for selecting the four channels. And

the certainly match the interior's impressive

appointments. This amp's elegant and stylish look is sure to turn heads wherever you

play.

3. in : , , and .

in every channel the count of .

and affords access to a wide range of

sounds. (that is, automatic frequency response adaptation to suit

the selected Gain stage and activated channel) fine-tunes two Gain stages to

give you a much wider range of sounds.

4. and knobs in each of the four channels and a

for let you dial in distinct tones with surgical precision.

four independent channels deliver different

tonal spectrums

fast & heavy riffs punchy lead tone

assertive midrange kick

vintage

clean classic grind creamy rock lead tone thick, lush tube overdrive

aggressive hi-gain lead sound contemporary

heavy styles

A/B Master switching

InVader Amp two

switchable effect loops programmable Amp Mute

MIDI foot controller

ENGL Z-4 dual footswitch

exterior's compelling visuals

fundamental sounds excellent tube quality Two

Gain stages double instant-access sounds Remote

MIDI Channel Gain Lo/Hi switching

EQ adapting

Separate Gain Volume 3-band EQ

channels 1, 2, 3 and 4

Z-9 Custom Foot Controller

Clean Crunch Lead

This affords you:

5. an that will give you years of

and .

-> : , , and with

separate Gain and Volume knobs.

-> for each of the basic channels: The Hi Gain feature

lets you activate directly two different gain settings for every channel.

> : one EQ for each Channel featuring

Bass, Middle and Treble.

-> for and : tuned to match

the given channels' tonal characteristics.

-> and are variable, switchable effect

loops. Each effect loop may be activated for each channel.

-> The power amp's and knobs are .

MIDI controller 7 accesses , and in addition

. These choices come in handy if you wish to use

the signal to .

ultra-advanced tone-generating machine

playing pleasure value to boot

Four basic channels

Two Gain variants

Four voicing sections

sound-shaping button

Two effect loops:

A B Master accessible via MIDI

MIDI-programmable

Pre Output tune your guitar

Features and Functionality at a Glance

Channel 1 Channel 2 Channel 3 Channel 4

Channel 1 Channel 2

FX Loop I FX Loop II

Amp Mute Amp Mute

Bright

-> and ports serve to integrate the amp into a MIDI system.

-> , accessible via 16 MIDI channels.

-> The InVader

The Serial Amp Control Port accepts the Custom Z-9 Footswitch (optional); use it

as a conventional switcher to select channels and two sound-shaping functions

directly. Then there's the MIDI In, which accepts the Z-9 for use as a simple MIDI

footcontroller or any other MIDI footcontroller. Finally, the amp is equipped with

a stereo jack that takes a dual footswitch, allowing you to switch the four

channels remotely.

-> for suppressing noise in ,

and .

Among the hallmarks of this fine amp are painstaking workmanship and finishing as

well as rigorously tested and carefully selected quality components. You'll find

guidelines on care and maintenance of tube amps on page 24. Under the heading Tips

from the designer, you'll come across practical tips on the aforementioned features

throughout the manual. All critical information concerning the operation of this amp

is preceded by "NOTE", "CAUTION", "Read and heed" or some other eye-catching

comment. We're calling your attention to these remarks for reasons of safety or other

compelling motives, so please give them due consideration.

Everyone at ENGL is confident that the

and are sure to delight you:

Though this amp head is relatively easy to handle and you're probably raring to give it

a go, I recommend that you read the owner's manual thoroughly before you power it

up. It is equipped with several safety features that require further explanation to

prevent malfunctions.

MIDI In Thru

Channel 2 Channel 3

Channel 4

128 MIDI presets

amp offers three different remote interface ports:

Programmable Noise Gate

InVader tube amp's extraordinary versatility

outstanding features Simply plug in, play and be inspired

by the tone of your new ENGL amp!

A few words of wisdom from the designer:

Contents:

1. ENGL InVader Tube Amp Head;

2. mains cord;

3. this manual;

4. a pamphlet entitled

At the back of the manual, you'll find fold-out diagrams of the front and rear panels.

As you're reading the descriptions of the amp's features, you'll gain a better

understanding of the topic of discussion if you unfold and refer to them as we go!

Channel 1 Gain control. This knob determines the preamp's input sensitivity for

Channel 1; use it to set the desired input level.

The amount of distortion depends on your guitar's pickups and the Gain (19) setting.

In Channel 1, single-coil pickups may begin saturating the preamp when the knob is set

to about the two o'clock position; pickups with very high output levels (humbuckers or

active pickups) will evoke mild overdrive at even lower settings. If you want squeaky

clean tone, simply back off the Gain knob accordingly.

If your guitar sports single-coils and you want to add some grit to your tone and bite to

your riffs, set the knob somewhere between 11 and 3 o'clock. For higher output pick-

Instructions for the Prevention of Fire,

Electrical Shock and Injury

Front Panel Features

A tip from the designer:

1 Bright

2 Gain 1

This feature boosts the upper end of the high frequency range in Channel 1 and

Channel 2. The red LED above this button lights up to indicate the Bright function is on.

This feature can also be switched via MIDI program change or Custom Z-9 Footswitch.

For a very crisp or glassy tone, activate the Bright feature. This setting brightens the

sound of humbucking or muddy pickups.

I matched to suit the two channels' Gain characteristics, which is why you get

different sounds when you activate it. Its effect is strongest in Channel 1's Lo Gain

range. As the name would indicate, the amp's gain level is lowest at this setting, so you

can activate to conjure sparkling clean sounds with Treble and Presence settings

as low as the 12 o'clock position.

This voicing option ups the twang factor inherent in certain types of guitars, and lets

you put a set of sonic cow horns on those that lack it.

is not nearly as aggressive in Channel 1's Hi Gain range. I toned it down to

prevent saturated sounds from growing too cutting or harsh, and tweaked it to deliver

a rich, pleasing overtone spectrum in finest tube-approved quality.

I also matched to Channel 2's tonal structure: Deactivate it for a more

pronounced midrange; activate it – particularly in Lo Gain mode – for a sweet, riff-

approved sound with a distinctively vintage tone!

The Bright functions in Channels 1 and 2, in combination with the two Gain choices Lo

and Hi, give you eight markedly different sounds, all accessible via MIDI!

A tip from the designer:

Bright

ups such as humbucking or active jobs, dial in settings between 9 and 1 o'clock and

activate .

This is the preamp voicing section's passive low-frequency EQ for .

This is the preamp voicing section's passive midrange frequency EQ for .

This is the preamp voicing section's passive high-frequency EQ for .

Determines the level for . Use this knob to adjust the volume of and

dial in the desired balance in comparison with the other channels' levels. Because this

knob is located pre effects loop, it also determines the effects send level for .

The green LED to the right of the knob lights up to indicate is on.

Gain control for . This knob determines the input sensitivity in Channel 2

mode; use it to dial in the desired amount of preamp distortion.

Single-coil pickups will evoke mildly overdriven sounds at settings somewhere

between 9 and 2 o'clock. Try settings between 8 and 12 o'clock for pickups with high-

output humbuckers or active pickups. Bear in mind the Hi Gain function. You can

activate it via an ENGL Custom Z-9 Footswitch or a preprogrammed MIDI preset to get

an even bigger, beefier crunch tone on the fly.

Extremely high gain and volume levels in Channel 2 can produce powerful

Hi Gain

Channel 1

Channel 1 Channel 1

Channel 1

Channel 2

A tip from the designer:

CAUTION:

3 Bass

4 Middle

5 Treble

6 Volume 1

7CH1

8 Gain 2

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 or slightly higher than the center or 12 o'clock position. For

higher-gain preamp 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). You will find that grittier tones generally sound better with a

touch less treble because preamp saturation makes higher frequencies figure more

prominently in the signal. Bear in mind that you also have the Bright (1) button, as well

as the power amp (14) an (15) knobs, at your disposal for

shaping the frequency range. I suggest you get into the habit of dialing in lower Treble

settings. That way, you can program various MIDI presets with the Bright option

remotely and have plenty of tonal variations at your fingertips.

Push this button to activate preamp Channel 1 directly (in reciprocation with ,

, ). The green LED to the right of the Channel 1 Volume knob (6)

lights up to indicate is active. may also be activated via MIDI

program change, the ENGL Custom Z-9 Footswitch, or a dual footswitch.

Presence Depth Punch

Channel 2

Channel 3 Channel 4

Channel 1 Channel 1

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!

This is the preamp voicing section's passive low-frequency EQ for .

This is the preamp voicing section's passive midrange frequency EQ for .

This is the preamp voicing section's passive high-frequency EQ for .

Determines the level for . Use this knob to adjust the volume of and

dial in the desired balance in comparison with the other channels' levels. Because this

knob is located pre effects loop, it also determines the effects send level for .

TheyellowLEDtotherightoftheknoblightsuptoindicate ison.

Channel 2

Channel 2 Channel 2

Channel 2

Channel2

A tip from the designer:

12Volume2

9 Bass

10 Middle

11 Treble

13 CH 2

14 Presence

15 Depth Punch

To help you get acquainted with the amp's fundamental sounds, I recommend that

you set all tone controls to or slightly higher than the center or 12 o'clock position. For

higher-gain sounds in , 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 Bright

(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.

Press this button to activate preamp directly (in reciprocation with ,

, ). The yellow LED to the right of the Channel 2 Volume knob (12)

lights up to indicate is active. may also be activated via MIDI

program change, the ENGL Custom Z-9 Footswitch, or a dual footswitch.

Power amp Presence knob. This knob determines the power amp's high frequency

response.

This control shapes the lo frequency response in the power amp stage and affects all

channels.

Channel 2

Channel 2 Chanel 1

Channel 3 Channel 4

Channel 2 Channel 2

16 FX LOOP I/II

17 Noise Gate

This button switches to and fro between and . The red LED above

the button lights up to indicate is on. You can also select loops via MIDI

program change or the ENGL Custom Z-9 Footswitch.

Both effect loops can be configured in series (that is, 100% processed signal when

is set to ) or in parallel (1% to 99% mix of preamp and effect signal when

is set somewhere between and ), or be bypassed altogether (0 % wet

balance when is set to ). You can connect an effect device to each of the

effect loops and switch from one effect device to the other using the FX Loop I/II

function, or employ just one of the two effect loops (for example, FX II Loop) and use

to activate the effect. In the latter case, serves as a bypass (set

its knob to the position). Note that in the signal path, and

controls are post and pre the power amp.

Press this button to activate an onboard and suppress excess noise in

channel 2, 3 or 4. Control the using the Level Threshold (48) knob on the

back of the amp. The LED above the button lights up to indicate the is

activated. This feature can also be switched via MIDI program change or the ENGL

Custom Z-9 Footswitch.

: The may open up inadvertently

when the is activated, a high-gain channel is selected, and the volume

exceeds the Threshold knob setting. At very high volume and gain settings, this may

generate instant feedback, particularly if your guitar is facing the speakers. Rather

than musical and controlled, this is the shrill, unpleasant and potentially harmful

variety of feedback squealing that sends your audience and fellow musicians packing.

Though the amp is not more susceptible to feedback when the is activated,

the fact that it suppresses extraneous noise means you can't hear those telltale signs

that feedback is swelling and consequently can't take measures to suppress it. For this

reason, make an extra effort to be careful when the is activated: Before

you approach the amp and speaker cabinet with your guitar in hand, turn the guitar's

volume knob to the far left position (to 0 so that no signal is audible) to prevent the

pickups and speakers from interacting!

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 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

amplified tremendously at high gain levels in Hi Gain mode. The most common source

of noise is 50 or 60 hertz mains hum, particularly when the guitar is positioned near

transformers and power units. Because in worst-case scenarios this humming can

attain extremely high levels, the Noise Gate can hardly distinguish between the

musical signal and noise. This makes it hard to find the right Threshold setting. It is

FX Loop I FX Loop II

FX Loop II

Balance wet

Balance dry wet

Balance dry

FX Loop I/II FX Loop I

Balance dry Master A

Master B FX Loop Return

Noise Gate

A tip from the designer:

IMPORTANT note; please read and heed

A tip from the designer:

entirely possible for this humming and other noise to rise to a level that deactivates the

and therefore becomes audible. My advice is to stay as far away from

transformers and power units as space allows.

¼" unbalanced input jack. Plug your guitar in here using a shielded cord.

Depending on the type of cord and its shielding, you may occasionally encounter

interference from sources such as radio stations or powerful magnetic fields. When

this occurs, try connecting your guitar to the amp using different cords. What's more,

to minimize signal degradation due to high-frequency loss, use the shortest cords

feasible (as a rule, the shorter the cord, the less susceptible it is to high-frequency

attenuation).

Pressing this button ups input sensitivity, thereby increasing the amplification factor

and the amount of distortion in all four preamp channels , , and . The

LED above this button lights up to indicate is active. This feature can also be

switched via MIDI program change or Custom Z-9 Footswitch.

Obviously, the difference between Lo and High Gain is the latter gives you more

preamp juice. But I also tuned frequency response to suit each channel's gain structure,

which is a long-winded way of saying the four channels give you eight great sonic

choices. Depending on the selected channel and Gain knob setting, the spectrum

ranges from pristine clean to ultra saturated lead tone, rich in overtones and gain

reserves for screaming solos and crashing power chords. Whatever tones your style,

genre and whims may demand, you'll find it between these two extremes. The options

are too numerous to mention, so switch back and forth between Lo and High Gain in

each of the four channels to get to know their tonal characteristics and make the most

of these eight fundamental sounds.

Gain control for Channel 3. This knob determines Channel 3's input sensitivity; use it to

dial in the desired amount of saturation level.

This is the preamp voicing section's passive low-frequency EQ for .

Noise Gate

CH1 CH2 CH3 CH4

Hi Gain

Channel 3

A tip from the designer:

20 Gain 3

18 Input

19 Hi Gain

21 Bass

Depending on Gain knob and Gain option (19) settings, Channel 3's gain ranges from

middling to extreme, which translates to big power chords and mean leads. Note that

Channel 3's midrange is scooped - that is, not as dominant as Channel 4's - lending

Channel 3 a distinctive tone quite unlike the other.

Extremely high gain and volume levels in Channel 3 can produce powerful

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!

CAUTION:

22 Middle

23 Treble

25 CH 3

26 Gain 4

27 Bass

Press this button to activate the preamp's directly (in reciprocation with

, , ). The red LED to the right of the Channel 3 Volume

knob (24) lights up to indicate Channel 3 is active. Channel 3 may also be activated via

MIDI program change, the ENGL Custom Z-9 Footswitch, or a dual footswitch.

Gain control for . This knob determines Channel 4's input sensitivity; use it to

dial in the desired amount of saturation level.

Like , Channel 4's gain sweeps from middling to extreme. Unlike ,

its midrange is boosted, making this a great choice for leads.

Extremely high gain and volume levels in Channel 4 can produce powerful

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!

This is the preamp voicing section's passive low-frequency EQ for .

Channel 3

Channel 1 Channel 2 Channel 4

Channel 4

Channel 3 Channel 3

A tip from the designer:

CAUTION:

Channel 4

This is the preamp voicing section's passive midrange EQ for .

This is the preamp voicing section's passive high-frequency EQ for 3.

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 9-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 two

power amp (14) and (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.

Determines the level for . Use this knob to adjust the volume of

and dial in the desired balance in comparison with the other channels' levels. Because

this knob is located pre effects loop, it also determines the effects send level in

Channnel 3 mode. The red LED to the right of the knob lights up to indicate the

is on.

Channel 3

Channel

Presence Depth Punch

Channel 3 Channel 3

Channel 3

A tip from the designer:

24 Volume 3

28 Middle

29 Treble

30 Volume 4

31 CH 4

32 Master A

33 Master B

This is the preamp voicing section's passive midrange EQ for .

This is the preamp voicing section's passive high-frequency EQ for .

To help you get acquainted with the amp's fundamental sounds, I recommend that

you set all tone controls to or slightly higher than 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 two

power amp (14) and (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.

Determines the level for . Use this knob to adjust the volume of

and dial in the desired balance in comparison with the other channels' levels. Because

this knob is located pre effects loop, it also determines the effects send level in

. The red LED to the right of the knob lights up to indicate is on.

Press this button to activate preamp directly (in reciprocation with

, , ). The red LED to the right of the Channel 4 Volume

knob (30) lights up to indicate Channel 4 is active. Channel 4 may also be activated

via MIDI program change, the ENGL Custom Z-9 Footswitch, or a dual footswitch.

Channel 4

Presence Depth Punch

Channel 4 Channel 4

Channel 4

Channel 1 Channel 2 Channel 3

A tip from the designer:

Master A volume knob. Located post effect loops, it controls power amp output. The

red LED to the right of the knob lights up to indicate is enabled and

determining the master level. You can also set the master level to 0 ( via

MIDI or the Z-9. To learn how to do this, see section 36 and section 45, page 17 in the

chapter.

Master B volume knob. Located post effect loops, it controls power amp output. The

green LED to the right of the knob lights up to indicate is enabled and

determining the master level. You can also set the master level to 0 ( via

MIDI or the Z-9. To learn how to do this, see section 36 and section 45, page 17 in the

chapter.

Master A

Amp Mute)

Rear Panel Features

Master B

Amp Mute)

Rear Panel Features

34 Master A/B

Switches back and forth between the Master A and Master B knobs. The LEDs next to

the knobs light up to indicate which Master knob is active the red LED for , the

green LED for . can also be switched via MIDI program change

or the ENGL .

Here's a nifty option: Use and to set two different power amp levels and

access these as you wish in tandem with the preamp's eight channel and Gain

combinations. You can easily program combinations of different ,

to and Low or High Gain (19) settings to different MIDI presets. Then you

can conveniently access these configurations on stage using a MIDI footboard (for

example, the ENGL Z-9, Z-12 or Z-15). This gives you many variations of the

fundamental sounds for different playing techniques and musical situations.

is your first choice for clean and even grittier rhythm and lead work. Take

advantage of the preamp saturation in Channels 2 to 4 for power chords and leads at

diverse gain and volume levels. Try working your guitar's volume knob to extend your

range of tones and musical expression. If a MIDI control unit and controller

commands are available (for example, the ENGL MIDI Footcontroller Z-15) you can

use the to silence the power amp quickly and conveniently for short

breaks or to swap guitars.

Master A

Master B MASTER A/B

Custom Z-9 Footswitch

Master A B

Master A/B

Channel 1 4

Channel 1

Amp Mute

A tip from the designer:

35 Write/Copy

Press this button to store the modified setting of a programmable feature to a MIDI

memory slot (generally called a preset). Here's how to distinguish between and

: with the former you're actually programming or writing a new MIDI preset, with

the latter you're making an exact duplicate of an existing preset.

The system will select a Write operation whenever you edit a MIDI preset, that is, when

you have modified a programmable feature. You'll know that this is the case because

the Status LED flashes steadily when you edit one or several programmable features. If

you press the button and did not edit a MIDI preset, the system will select . This

means that the given preset becomes the source, and its contents are dumped to

another preset and stored there.

The system quits mode autonomously

if you do not select a new MIDI preset within about 30 seconds.

The preset programming process -- the Write command, that is -- is not carried out as

soon as you press the button. Pressing the button merely initiates the process. You

must hold it down for about a second until the Status LED flashes three times in rapid

succession. This mechanism is designed to prevent inadvertent programming. You can

cancel the programming process at any time before the Status LED first illuminates by

releasing the Write button. Again, the preset will only be programmed successfully if

you press and hold the button until the Status LED flashes three times.

Write

Copy

When you press this button, the Status LED lights up

continuously to indicate is activated.

You'll have to go through a similar routine to copy a preset once you select a target

preset: When the Status LED extinguishes, the copy operation is underway and can no

longer be cancelled. The LED flashes three times to indicate the preset was copied

successfully. You can cancel the copy operation by releasing the key, but only for as

long as the LED lights up continuously.

Copy

IMPORTANT note; please read and heed

More good-to-know info:

MIDI preset 1 activates when the amp is powered up. If you want to edit and/or store

other MIDI presets, you must connect a MIDI foot board or another MIDI send device

to the port (43) and use this outboard device to select the desired MIDI preset

on the amp.

Note that the Status LED also indicates the status of components unrelated to

and . The microcontroller runs a short system check after you switch the amp on.

Should it find a defect in the memory chip (EEPROM), the LED

Press the Write/Copy copy button to confirm that you got the message. Once you have

done this, the system will be ready to run, although you may encounter problems

when attempting to select or store MIDI preset.

The Status LED serves a third display function. As described in section 37, it indicates

that no speaker is connected to the power amp outputs.

MIDI In

Write

Copy

36 Amp Mute

37 Stand By

This red LED lights up to show is engaged, that is, the power amp is

silenced. Activate this mode via (set it to 0), a previously programmed MIDI

preset, a MIDI controller #7 command (see chapter45 to learn more) or by sending the

appropriate Z-9 command to the Serial Amp Control Port (46). Deactivate

by setting Standby (37) from to or sending the appropriate MIDI

command to the MIDI In port (43) or via the respective Z-9 command (setting )

send to the Serial Amp Control Port (46).

When programming MIDI presets,

ensure Standby switch is set to (that is, the power amp is active) if you want this

preset to disable and enable the power amp so the speaker renders your

sound. If the Standby switch is set to 0 during programming, the amp will be muted

when you select this MIDI presets precisely because the function was

enabled during programming. Therefore the power amp will not boost the signal and

the sound will not be audible over the speaker.

You cannot deactivate to activate the amp via appropriate

programmed MIDI presets, MIDI controller #7 commands or via the Z-9 when

is engaged to switch the power amp off. You must first flip the Standby switch.

Power amp standby switch: Use this switch to silence (0 position) the amp when you

take longer break. The amp's tubes stay nice and toasty, and the amp is ready to roll

immediately when you ramp it back up to full power.

activates as soon as you set the Standby switch to the 0 position and the

Amp Mute LED (36) shows this status by lighting up. You can easily program the Amp

Mute function to MIDI presets to mute the amp using a simple MIDI footboard. To do

this, set the Standby switch to 0 and start the programming process with the Write

button (35).

When programming MIDI presets, ensure

Amp Mute

Standby

Amp Mute

0 Power Amp On

F2-4

Amp Mute

Standby

Amp Mute

A very IMPORTANT note; please read and heed:

Note:

IMPORTANT note; please read and heed:

will flash in a pattern of

five short bursts.

Further indicator functions: ; description in section 37.Power Tube Monitor

Standby is set to (that is, the power amp is active) if you want this preset to disable

and enable the power amp so the speaker renders your sound. If the

Standby switch is set to during programming, the amp will be muted when you select

this MIDI presets precisely because the function was enabled during

programming. Therefore the power amp will not boost the signal and the sound will

not be audible over the speaker.

Do not engage the Standby switch when copying with the Write/Copy (35) button, as

this launches a write operation. The control system treats the Standby switch much like

a function button. If you use it to edit the stored settings, the Status LED will flash.

To learn more about this, see section 35 and

in the appendix on page 23.

If the amp is in Standby mode, deactivating the Amp Mute function via the Amp Mute

Z-9 command will not activate it. The same goes for sending MIDI controller #7

commands and selecting MIDI presets programmed with deactivated. You

must first flip the Standby switch.

On the one hand, the amp's surveillance system monitors if speaker cords are plugged

into (57, 58), (59, 60), and (61). If none

of these ports is in use, flipping the Standby switch will not activate the power amp.

This ensures the amp is not operated without a connected load.

In addition, an electronic surveillance system monitors the power tubes. The Status

LED flashes to alert you to a defective power tube, blinking in different patterns to

identify the given tube. Specifically, it lights up briefly at regular intervals - once for V1,

twice for V2, thrice for V3, and four times for V4, five times for V5 and six times for V6

(V5, V6: Invader 150 amp). Because the tube monitoring system only works when the

power tubes are up and running, this indicator is not enabled until you activate the

power amp by flipping the Standby switch. To reset the power tube monitoring

circuitry, press the standby switch briefly.

I suggest you get into the habit of using standby during short breaks. In this mode,

current is not piped through the power tubes, so they don't get as hot (due to the lack

of anode dissipation) and are spared considerable wear. The amp is ready to run when

you flip the Standby switch because the tubes are already warm and don't require time

to heat up. For breaks of 30 minutes and longer, I recommend that you switch the amp

off in order to conserve energy.

Mains power on/off.

Amp Mute

Write/Copy Programming sounds

(Settings) to MIDI presents in individual steps

Amp Mute

Poweramp Outputs 4 Ohms 8 Ohms 16 Ohms

If you want the power amp to be enabled in a MIDI preset, you must program it

with Standby set to !

Note:

More good-to-know info:

A tip from the designer:

38 Power

If the amp is powered

up and the Standby switch is set to On, the Standby circuit is deactivated internally

and the Status LED shows this by flashing rapidly.

Rear Panel Features

At the back of the manual you'll find a folded page offering diagrams of the front and

rear panels. Please unfold and refer to it as you read through the descriptions of

features and functions!

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

equipment connector cable.

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

you power the amp up, ensure the voltage value printed alongside the mains port 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,

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

This switch severs the circuit connecting the amp's internal ground to the wall

receptacle's ground terminal. You can set the switch to when you

have connected a signal processor or power amp and want to prevent the two devices'

grounds from forming a ground loop that manifests in annoying humming.

A ground loop is an extraordinary condition. Under ordinary

circumstances, ensure the button is set to to earth the amp to the mains

ground, thereby preventing ungrounded line noise!

This 5-pin DIN port patches incoming MIDI data from the (43) to any other

connected MIDI device.

This 5-pin DIN port accepts data sent by a MIDI sender (for example, the ENGL MIDI

Z-12, Z-15, or Z-9 foot controllers) or from or routed through another MIDI device.

Switch no. 44 lets you activate the amp's power supply if you have an ENGL

connected to this port.

Before you connect any other MIDI footswitch or effects device, always

make sure that switch no. 44 is set to the right to avoid damaging the device.

This selector activates a MIDI In port power supply for connected ENGL MIDI foot

boards. Power is fed to the board via the MIDI circuit. When the switch is set to the left

position, power is routed to the MIDI In port's pin 1 and pin 2 (refer to page31 for pin

assignments). If you choose to use another MIDI foot board, be sure to set the switch

Mains Connector (

40 Mains Fuse Box:

41 Ground Lift Switch

42 Midi Thru

43 Midi In

44 Power Supply For The ENGL Midi Footcontroller

CAUTION:

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

same ratings as the original fuse! To this end, please refer to the fuse ratings shown

on the type panel.

Please note:

CAUTION:

Instructions for the Prevention of Fire, Electrical Shock and Injury

Ground Floated

Ground

MIDI In

MIDI foot

controller

39 AC Power Inlet)

to the right to avoid damaging it. If the foot board you are using is designed to handle

phantom power, consult its operating manual to learn how it is wired (that is, which

pins carry its power supply) and what its voltage and current specifications are. If the

voltage and current specifications and wiring match, you may set the switch to the left

to power this foot board via the MIDI cable.

Note that a MIDI foot board may not draw more than 200

milliamperes of current if you want to power it via this port. You must also check and

verify if this MIDI foot board is able to handle 11 volts of alternating current (AC)! If

you are in any doubt, be sure to consult a specialist, meaning an amp technician or

electronics engineer who earns a living with a screwdriver!

Use this set of encoding buttons (1, 2, 3, 4 and 5) to assign the MIDI channel. This tells

the amp's MIDI system over which channel it will receive MIDI program change

commands. Your choices are the standard 16 MIDI channels (numbered from 00 to

15), as well as OMNI mode (whereby all MIDI data is received regardless of the MIDI

send channel). The encoding button settings for a specific channel and OMNI mode

are listed in the following table.

Encoding button number 6 lets you program the amp so that it is muted when it

receives a MIDI controller #7 command. When this command has a value of 0 (and less

than and equal to 5), the amp's master volume is muted ( active). At values

greater than or equal to 5, the amp is back on line at the volume level determined by

the currently active Master knob ( deactivated).

Setting the encoding button 6 to ON enables the MIDI controller #7

access capability.

Setting the encoding button 6 to OFF disables the MIDI controller #7

access capability.

You cannot deactivate to activate the amp via an appropriate MIDI

controller #7 command when is engaged to switch the power amp off.

You must first flip the Standby switch.

MIDI-channel: S 1 S 2 S 3 S 4 S5 S6

OMNI OFF XX XX XX XX XX

CH 1 ON OFF OFF OFF OFF XX

CH 2 ON OFF OFF OFF ON XX

CH 3 ON OFF OFF ON OFF XX

CH 4 ON OFF OFF ON ON XX

CH 5 ON OFF ON OFF OFF XX

CH 6 ON OFF ON OFF ON XX

CH 7 ON OFF ON ON OFF XX

CH 8 ON OFF ON ON ON XX

Please read and heed:

MIDI controller #7 assignment to encoding button number 6:

Note:

MIDI channel assignment using the encoding buttons:

45 Midi Channel & Amp Mute

Amp Mute

Standby

CH 9 ON ON OFF OFF OFF XX

CH 10 ON ON OFF OFF ON XX

CH 11 ON ON OFF ON OFF XX

CH 12 ON ON OFF ON ON XX

CH 13 ON ON ON OFF OFF XX

CH 14 ON ON ON OFF ON XX

CH 15 ON ON ON ON OFF XX

CH 16 ON ON ON ON ON XX

As the table indicates, encoding button 1 switches between Poly and OMNI mode.

Bear this in mind for practical applications, because this is a fast way to go from a

preset Poly channel to OMNI mode and vice versa.

This serial data input accepts the Custom ENGL Z-9 Footswitch (optional), which lets

you control various amp functions remotely. Connect the Z-9 Footswitch to the amp

port using a cord equipped with stereo ¼" jack plugs. This MIDI-enabled foot board is a

custom design that switches every amp feature designated as footswitchable in this

manual. To learn if a given feature may be controlled remotely, refer to its description

herein. The MIDI In port is disabled when the Z-9 Footswitch is connected. A

configuration table for the functions of the InVader amp is printed on page 34.

Connect only the ENGL Z-9 Footswitch to this 6.3 mm (1/4") stereo jack!

Connecting any other switching device may damage it and/or the amp's circuitry!

The Custom Z-9 Footswitch was designed with the non-MIDI guitarist in mind. It's sure

to delight if you don't or won't use MIDI systems. Based on a rather nifty switching

concept, it provides direct access to the four channels. It also lets you control any other

two switchable amp functions, for example, , , , etc.

Another tremendous benefit of this microcontroller-driven foot board is that it

connects to the amp via an easily obtained, standard stereo cord. But that's not the last

of the Z-9's advantages: At some point, you may decide to ramp up or connect to a

MIDI system. This won't render the Z-9 obsolete because it also serves as a simple MIDI

foot board with a MIDI OUT (5-pin DIN connector) that selects 10 MIDI patches (or

presets, if you prefer). Again, I want to emphasize that you should never connect

another foot board to this jack: The Z-9 controls the amp via a proprietary ENGL serial

data protocol, and the was developed exclusively for ENGL

amps. No other foot board will work and in fact is likely to damage the foot board or

amp's circuitry!

Use this jack to connect a conventional footswitch with two switching functions (for

example, the ENGL Z-4) that let you access the four channels , ,

und . Read and to mean switching among channels

arrayed at the top and bottom of the amp's front panel. One button switches between

the top (-> and ) and bottom (-> and ) channels, while the

A tip from the designer:

CAUTION:

A tip from the designer:

46 Footswitch: Serial Amp Control Port

47 Footswitch: Channel Up / Down, 1--3 / 2-4

Master A/B FX Loop Hi Gain

Serial Amp Control Port

Channel 1 Channel 2

Channel 3 Channel 4 Up Down

Channels 1 2 Channels 3 4

other activates or (-> the top channels) and or (-> the bottom

channels). The onboard channel switching facility, is disabled when you plug a

footswitch into this jack. The MIDI In port (43) and the Z-9 Port (46) are both disabled

when a plug is connected to this jack.

A footswitch may be equipped with LEDs indicating the given switching

status. Each of the two switches is provided with 15 milliamperes current, which

suffices to power a standard LED. The stereo jack plug's mono contact ( ) controls up

and down channel selection (CH1-CH2 / CH3-CH4), while the other contact ( )

accesses channels 1/2 - 3/4 (: CH1/CH2 - CH3/CH4) controlled. For details on wiring, see

Pin Assignments on page 31.

Use this knob to set a threshold value (that is, the noise level) at which the

activates to suppress the signal. The further you twist the knob to the right, the higher

the signal level at which the kicks in. The can be activated and

deactivated as required for , and by pushing the front

panel button (17).

The Lo and Hi Gain options generate different levels of noise, and I tuned the ENGL

InVader's Noise Gate accordingly. However, there is some minor matching variance

between the two. stands to benefit most from the Noise Gate, so I suggest that

you tweak its two knobs for this mode.

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

shortest possible shielded cord equipped with 1/4" plugs. Activate and deactivate it via

the FX Loop I/II (16) button, which switches between these two loops. In the signal

path, is located post preamp and pre the two power amp Master knobs.

Connect this FX Loop I input to a signal processor's output/send jack using the shortest

possible shielded cord equipped with 1/4" plugs. Activate and deactivate it via the FX

Loop I/II (16) button, which switches between these two loops. In the signal path,

is located post preamp and pre the two power amp Master knobs.

FX mix control for . When the knob is set to , the amp signal is routed

through with no processed signal (0% wet balance) added to the mix. Twist the knob

clockwise to blend in the processed signal (parallel/passive, wet balance 1-99%,

depending on knob position). When the knob arrives at the Effect position, only the

wet signal (that is, the processed signal generated by the connected effect device) is

patched to the power amp (serial, 100% wet).

Set this knob to when this loop is not in use!

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

Channel 1 2 Channels 3 4

tip

ring

Noise Gate

Noise Gate Noise Gate

Channel 2 Channel 3 Channel 4

Hi Gain

FX Loop I

Loop I

FX Loop I Dry

Dry

Note also:

A tip from the designer:

NOTE:

48 Threshold Level

49 FX Loop I Send

50 FX Loop I Return

51 Balance

52 FX Loop II Send

shortest possible shielded cord equipped with 1/4" plugs. Activate and deactivate it via

the FX Loop I/II (16) button, which switches between these two loops. In the signal

path, is located post preamp and pre the two power amp Master knobs.

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