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Troubleshooting

Programmable features fail to respond when you change settings:

The amp fails to respond when you try to switch presets via MIDI foot board.

The amp is not providing an output signal / no sound is emanating from the
speaker.

-> Powerful static charges, strong radio signals or mains voltage spikes can affect

microcontroller-driven systems, setting them to an undefined status (commonly

called a hung chip). In this event, your only choice is to reset the system.

Simply switch the amp off and on again.

-> If a reset doesn't solve the problem that is, the chip is still hung there

is a defect in the control system (presumably on the logic board holding

the microcontroller). In this case, consult an authorized service center

or a professional specialist.

-> Is the MIDI foot board connected to the MIDI In port (44)?

-> Is the MIDI cord you are using intact and wired properly?

(Refer to page 35 for pin assignments.)

-> Is the amp set to the MIDI channel over which the MIDI foot board is sending

program change commands? You can set the DIP switch (46) to OMNI

reception to check if the preamp is actually receiving data.

-> Is another foot board (the ENGL Z-9 or a two-way footswitch) connected and

therefore blocking MIDI reception?

-> Is at least one speaker connected to the speaker outputs

(62, 63)

(64, 65) or

(66)?

-> Is the power amp activated (Standby switch to ON)?

Standby / power amp off => The Mute LED (36) on the front panel

indicates the Amp Mute status.

-> Are all cords (guitar, effect, and speaker) connected properly and are they

functional?

-> Unplug connected effectors and see if the preamp works fine without these

peripheral devices.

-> Is the

activated in one of the channels

and

the Threshold (49) knob set to a high value? Deactivate the

(17)

for a quick check.

-> Are the active Master knob and the Gain and Volume knobs set to a value

greater than 0? If any of these knobs is set to 0, no signal is routed

to the amp's outputs.

-> Did you select a MIDI preset programmed with

enabled?

The front panel Mute LED (36) lights up to indicate

is active.

-> Did you send via MIDI foot board a MIDI controller #7 (or #28) command

with a value more than or equal to 5? This activates A

, thereby

silencing the amp. The front panel Mute LED (36) lights up to indicate

is active.

4 Ohms

, 8 Ohms

16 Ohms

Noise Gate

CH2 CH3

CH4

Noise Gate

Amp Mute

mp Mute

Amp Mute

Содержание INVADER II

Страница 1: ...Operator s Manual Please first read this manual carefully 4 Channel Full Tube Guitar Amplifier with MIDI Control INVADER II...

Страница 2: ...IN OR MOISTURE CAUTION Footswitch Serial Amp Control Port CAUTION Connect Custom Footswitch Z 9 Only Midi Thru Midi In Midi Foot Controller Channel Up Down 1 3 2 4 Midi Channel Amp Mute Signal Outputs...

Страница 3: ...on Amp Mute and the P T M System Power Ground Lift Switch Low High Gain Volume Ratio Control CH 1 CH 2 CH 3 CH 4 Pre Out Line Out Poweramp Output speaker options Mains Mains Fuse MIDI Section and Foo...

Страница 4: ...hniques for instance Channel 4 for and an power chords Channel 3 for with an All four channels offer Low Gain High Gain switching as well as dedicated Gain and Volume knobs and a 3 band EQ for each ch...

Страница 5: ...al spectrum tremendously Separate Gain Volume 3 band EQ channels 1 2 3 and 4 128 MIDI presets INVADER II amp offers three different remote interface ports Programmable Noise Gate 5 an that s versatile...

Страница 6: ...the two and settings when using the ENGL Sound Wizard module optional The LED above the button lights up to indicate the Sound function is enabled It may also be switched via MIDI program change or th...

Страница 7: ...a few more words to an optional feature that extends the tonal capabilities of the Sound function on the INVADER II amp It caters to demanding players who want to sculpt their sound with the surgical...

Страница 8: ...cking or active jobs dial in settings between 10 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 freq...

Страница 9: ...determines the preamp s input sensitivity when Channel 3 is selected and by extension the preamp signal s saturation level Like Channel 4 Channel 3 s gain structures range from to extreme making it a...

Страница 10: ...of Channel3 spreampanddialinthedesiredbalancewiththeotherthreechannels levels Becausethisknobislocatedpreeffectsloop italsodeterminesthesendlevelsforbothFX loopswhen isselected TheredLEDtotherightofth...

Страница 11: ...te 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 cherish...

Страница 12: ...options are too numerous to mention so switch back and forth between Low and High Gain in each of the four channels and vary the Gain knob settings to get to know their tonal characteristics and make...

Страница 13: ...ected and by extension the preamp signal s saturation level hannel 4 has plenty of headroom so I recommend setting the Gain knob to somewhere between 8 and 1 o clock This will let you dial in impressi...

Страница 14: ...amp 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...

Страница 15: ...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 y...

Страница 16: ...sly programmed MIDI preset a MIDI controller 7 or 28 command see chapter 46 to learn more or by sending the appropriate Z 9 command to the Serial Amp Control Port 47 Deactivate by setting Standby 38 f...

Страница 17: ...6 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 syst...

Страница 18: ...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 wh...

Страница 19: ...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...

Страница 20: ...e MIDI channel 1 2 3 4 5 6 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...

Страница 21: ...eo 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 t...

Страница 22: ...erent 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 y...

Страница 23: ...connected effect device is patched to the power amp serial 100 wet Set this knob to when this loop is not in use This knob adjusts the balance of volume levels between in Low Gain mode and in High Gai...

Страница 24: ...or diverse cabinet options An electronic surveillance system constantly monitors if a plug is inserted into the speaker outputs 62 63 64 65 and 66 If a plug is not inserted into one of these 5 jacks t...

Страница 25: ...just this one channel The same goes for Channel 2 Its spectrum ranges from clean with the Gain knob set to around 1 o clock or lower again depending on the pickup to a touch of vintage style grit wit...

Страница 26: ...ure yet another gain stage in each channel if you happen to need a little more sonic firepower Beyond that I voiced Channels 3 and 4 differently Channel 4 s midrange is scooped and its hair trigger re...

Страница 27: ...ity to put that processor to even better use and employ it to power a couple of reassuring protection systems One is which checks every power tube individually the other is a speaker output surveillan...

Страница 28: ...dicate that is activated 3 Select the target preset via the MIDI foot board you have approx 30 seconds to do this The amp automatically quits Copy mode 30 seconds after it is activated 4 Press and hol...

Страница 29: ...fe Replace tubes with selected tubes that satisfy ENGL selection criteria to forestall microphonic properties undesirable noise and unbalanced power amp signals Because power tubes idle current bias m...

Страница 30: ...also extinguishes once the new setting has been stored 4 Copy process was activated by pressing the Write Copy button Indication LED lights up continuously What to do If desired cancel the Copy opera...

Страница 31: ...n to check if the preamp is actually receiving data Is another foot board the ENGL Z 9 or a two way footswitch connected and therefore blocking MIDI reception Is at least one speaker connected to the...

Страница 32: ...e problem try detaching the Sound Wizard module from the amplifier by unplugging the connection between the two To do this first disconnect the amp from the mains power let it cool down if it was powe...

Страница 33: ...al Programmer EEPROM 93C66 for data retention Asynchronous data protocol according to the MIDI standard Proprietary ENGL asynchronous data protocol approx l x h x d approx 27 95 x 11 x 11 4 in approx...

Страница 34: ..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Reason _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3 Replaced on _ _ _ _ _ _ _ 20 _ _ _ Replaced by _...

Страница 35: ...MIDI data wire Pin 5 MIDI data wire Pin 2 power supply approx 11 volts AC Pin 3 N C page 19 Stereo 1 4 jack Serial Amp Control Port 47 tip 5 volts ring Data sleeve Ground GND Very important use a ster...

Страница 36: ...MPN set switch loop status On or Off with 5 6 7 8 for the respective Loop store the setting with 0 Send controller value commands with 1 or 2 switch between the default controller value and the initi...

Страница 37: ...E COPY MUTE HIGH GAIN INVADER II S W M Amp Tube GAIN 2 GAIN I MIDDLE MIDDLE TREBLE TREBLE VOLUME 2 VOLUME I GAIN 4 GAIN 3 TREBLE TREBLE VOLUME 3 VOLUME 4 MASTER A PRESENCE MASTER B DEPTH PUNCH INPUT P...

Страница 38: ...ly or newly selected configuration For example if LED 3 flashes when the Z 9 s Setup routine is activated then the INVADER s switching feature is currently assigned to the corresponding S A C command...

Страница 39: ...AIN OR MOISTURE CAUTION Footswitch Serial Amp Control Port CAUTION Connect Custom Footswitch Z 9 Only Midi Thru Midi In Midi Foot Controller Channel Up Down 1 3 2 4 Midi Channel Amp Mute Signal Output...

Страница 40: ...ube Amp Technology Tube Amp Technology ENGL Ger tebau GmbH Germany Internet www engl amps com Text design graphics and layout by Horst Langer Amp Designer Photography INVADER II Amp Stefan Wibbeke R R...

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