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features four switches that afford you direct access to Channel 1 and Channel 2 in

combination with the two Gain Boost stages.

Alongside selecting channels, you can opt to control any other two switchable amp

functions such as

and

or

and

, and so forth.

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

One of the two switches enables or bypasses

, while the other switches

the Noise Gate on and off (Channel 2 with Gain Boost engaged only).

Note also: A footswitch may be equipped with LEDs indicating the given switching

status. Each of the two switches is provided with approx. 10 milliamperes current,

which suffices to power a standard LED. The jack's mono terminal controls

, while the stereo terminal controls

on

(for pin assignments, see

page 22).

Plugging a footswitch into this jack

disables onboard

(9) switching.

Note also: A footswitch may be equipped with LEDs indicating the given switching

status. Each of the two switches is provided with approx. 10 milliamperes current,

which suffices to power a standard LED. The jack's mono terminal selects

,

while the stereo terminal controls the Tone feature (for pin assignments, see page 22).

to connect a conventional footswitch with two

switching functions, for example, the ENGL Z-4 (2 x off/on - Single Pole Single Throw or

Tone

Master A/B FX Loop

Noise Gate

Noise Gate

Tone

22 Footswitch: FX Loop, Noise Gate Off - On

23 Footswitch: Master A/B, Tone

24 Footswitch: Channel 1 < > 2, Gain Boost

Another tremendous benefit of this microcontroller-driven footboard 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 using the ENGL Z11-S.A.C. MIDI Switcher. This won't render the Z-9

obsolete because it also serves as a simple MIDI footboard 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 footboard to this jack: The Z-9 and

the Z11-S.A.C. control the amp via a proprietary ENGL serial data protocol, and the

Serial Amp Control Port was developed exclusively for ENGL amps. No other footboard

will work and in fact is likely to damage the footboard or the amp's circuitry!

You can use the ENGL Z11-S.A.C. MIDI Switcher to integrate the amp straight into a

MIDI system. You can also opt to control two amps in parallel using the Z11-S.A.C.

MIDI Switcher and MIDI commands. The Z11-S.A.C. Switcher is equipped with six

switching loops (accessed via three stereo jacks) and the S.A.C. Out (stereo jack) for

precisely this purpose!

Use this ¼" (6.3 mm) stereo jack

on/off and

on/off.

on/off

/off

Use this ¼" (6.3 mm) 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

and

. One of

the two switches activates Master A or B, while the other selects the Tone control,

which boosts Channel 2's midrange frequencies.

Use this ¼" (6.3 mm) stereo jack

FX Loop

Noise Gate

FX Loop

FX Loop

Master A/B

Tone

Master A/B

12

Summary of Contents for Retro Tube

Page 1: ...Operator s Manual Full Tube Guitar Amplifier Please first read this manual carefully Retro Tube...

Page 2: ...Tube Amp Technology Tube Amp Technology...

Page 3: ...s Poweramp Output speaker options Power switch Mains connector AC Power Inlet Mains Fuse Amp remote control S A C Port for Z 9 Footswitch Ports Detailed Specifications and Ratings You ll find an ancil...

Page 4: ...vertone spectrum perfect for soaring leads The built in Noise Gate helps stifle the annoying hiss often generated when Gain Boost is engaged at very high gain levels Channel 2 s Tone button fattens up...

Page 5: ...g features of your choice Three 6 3 mm stereo jack plugs accept three dual footswitches that let you remotely control the two channels off on and the off on Activate it at the amp or via footswitch to...

Page 6: ...nd 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 cord...

Page 7: ...end response This is the preamp voicing section s passive low frequency EQ for This is the preamp voicing section s passive midrange frequency EQ This is the preamp voicing section s passive high freq...

Page 8: ...29 to largely suppress such noise Extremely high gain and volume levels in Lead mode can produce powerful feedback Avoid feedback squeals they can lead to hearing loss and damage speakers At higher vo...

Page 9: ...tton lights up to indicate is active The button 14 on the amp s front panel is disengaged when you switch via footswitch 21 24 may also be switched via an ENGL Z 9 Custom Footswitch connected to the S...

Page 10: ...ds over Channel 2 Beyond that you can also broaden the volume and tonal ranges by working your guitars volume knob If your arsenal includes MIDI gear for instance the Z 11 ENGL MIDI Switcher in combin...

Page 11: ...TION Make sure you use an intact mains line cord with a grounded plug Before you power the amp up ensure the voltage value printed the mains socket is the same as the current of the local power supply...

Page 12: ...ne 24 Footswitch Channel 1 2 Gain Boost Another tremendous benefit of this microcontroller driven footboard is that it connects to the amp via an easily obtained standard stereo cord But that s not th...

Page 13: ...ube V7 Retro Tube 100 The Power Tube Fuse LED 28 lights up to indicate that one or several of the four fuses has blown There is a replacement fuse in the front chamber of the fuse drawer Always make s...

Page 14: ...n the guitar signal and background noise 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 natur...

Page 15: ...ath located post preamp and pre the two power amp Master knobs FX mix control for the When the knob is set to the amp signal is routed through with no processed signal 0 wet balance added to the mix T...

Page 16: ...ut a sufficient load otherwise you may damage or destroy it Always check the connected cabinets impedance to confirm it matches the amp s output impedance For example if you are connecting a cabinet t...

Page 17: ...ing detergents to clean the amp s housing front or rear panels Use a soft damp cloth or sponge with diluted soapsuds or a standard brand of mild dishwashing liquid instead Never use solvents they can...

Page 18: ...ng stereo intact and wired properly Refer to page 22 for pin assignments Are the footboards or switching loops connected to the corresponding footswitch jacks 22 23 24 Are the cords you are using ster...

Page 19: ...nterference from powerful magnetic fields for example of nearby power transformers or electrical motors Reposition the amp and connector cables The amp or speaker cords may be picking up radio signals...

Page 20: ...VA max E765 2 AT L E762 1 25 AT L E765 4 AT L E762 2 5 AT L E765 4 x 160 mAM E762 2 x 160 mAM ECC83 selected ECC83 standard 71 x 27 x 27 cm approx 27 9 x 10 6 x 10 6 l x h x d approx 22 5 kg E765 appr...

Page 21: ...ed on _ _ _ _ _ _ _ 20 _ _ _ Replaced by _ _ _ _ _ _ _ _ _ _ _ _ _ _ Replaced tubes _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Reason _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

Page 22: ...button press the Channel 1 and the respective Function button simultaneously until the LED starts flashing Now use the buttons 1 to 4 to select the desired switching feature press 1x or 2x Store the s...

Page 23: ...cates the currently or newly selected configuration For example if LED 3 flashes when the Z 9 s Setup routine is activated then the Retro Tube Amp s switching feature is currently assigned to the corr...

Page 24: ...panel frame pull the front panel frame without the grille until the locking mechanism unlatches raise it slightly then remove it from front of the Amp A Phillips screws 8 pcs included 2 pcs required p...

Page 25: ...frame Fix the clasps on the front panel frame boreholes for the clasps place the first clasp attach this clasp with two screws tighten the screws carefully assemble the second clasp in the same way on...

Page 26: ...ront panel frame Install the front panel frame insert the bottom part of the front panel frame in the two milling grooves located at the base panel of the amp s housing Fit the front panel frame into...

Page 27: ...Space for User Notes 27...

Page 28: ...Tube Amp Technology Tube Amp Technology Ger tebau GmbH Germany Internet http www engl amps com R R Text design graphics Amp photo and layout by Horst Langer Amp Designer...

Page 29: ...GERMANY POWER TUBE V7 FUSE DO NOT OPEN FUSEHOLDER WHILE AMP IS SWITCHED ON REPLACE FUSES ONLY AGAINST SAME TYPE AND RATING CAUTION POWER TUBE V8 FUSE POWER TUBE V6 FUSE POWER TUBE V5 FUSE DO NOT OPEN...

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