background image

ON/OFF

ON/OFF

R

Amp

Tube

FOOTPEDAL

Z-4

Your Options for controlling the ENGL Retro Tube amp remotely:

#1  ENGL Z-9 Custom Footswitch:

 This specialized footboard connects to the amp 

via a 6.3 mm (¼ ”)  stereo cord plugged into the Serial Amp Port - S.A.C. (21). 
The Z-9 affords you direct access to the amp's two Channels in combination with 

Gain Boost

 simply by tapping the four channel switching buttons, and lets you 

control two special functions, for example, 

Tone

 and 

FX Loop

.

As an alternative to the Z-9 footswitch, you can also connect the ENGL Z11-S.A.C. 
MIDI Switcher (S.A.C. Out) to the amp's S.A.C. Port for use as a MIDI interface.

#2 A two-way footswitch such as the ENGL Z-4: 

Connect 

dual footswitches to the amp by plugging stereo 6.3 mm 
(¼ ”)  cords into jack nos. 24, 23, and 22.

 

-> 

Channel 1< >2 

and

 Gain Boost 

(1 x Z-4);

-> 

Master A/B

 and 

Tone

  (1 x Z-4);

-> 

FX Loop

 and 

Noise Gate

  (1 x Z-4);

As an alternative to dual footswitches, you can connect 
a MIDI switcher (the ENGL Z-11 will do nicely) to these
three jacks to control the six switching functions.

#2

#1

R

Amp

Technology

Tube

Custom

Footswitch

Z-9

Ser.Cnt.:

Channel 1

Ser.Cnt.:

Channel 2

Ser.Cnt.:

Channel 3

Ser.Cnt.:

Channel 4

Ser.Cnt.:

Function 1

Ser.Cnt.:

Function 2

MIDI:

Patch 1/6

MIDI:

Patch 2/7

MIDI:

Patch 3/8

MIDI:

Patch 4/9

MIDI:

Patch 5/10

MIDI:

Bank A/B

Power Supply In

7-14 Volts AC
9-20 Volts DC

approx. 100 mA

MIDI

Out

Serial Amp

Control Out

Caution !

Connect To

       Amplifier

Only!

Design by

Horst Langer

To assign Amp switching

features to the Function

1 and 2 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 selected 

switching feature by 

pressing the opposite

Function button

for approx. 1 second.

Wiring of Principal Connectors

Stereo

1/4" jack

Serial Amp Control Port (21)

tip

: + 5 volts

ring

: Data

sleeve

: Ground, GND

Very important:
use a stereo
plug only!
Connect ENGL 
Custom Z-9 
Footswitch only!

Stereo

1/4" jack

Dual Footswitch (22, 23, 24)

tip

:  refer to 

*T

ring

: refer to 

*R

sleeve

: Ground, GND

Use a stereo

plug only!

page: 12

Stereo

1/4" plug

ring

tip

sleeve

Here you'll find at a glance the technical details 
of the Retro Tube Amp's various remote switching capabilities:

A switch connected to this terminal 

*R

 controls

  

Noise Gate;

 off <-> on via jack 22;

  

Tone;

 passive <-> active via jack 23;

  

Gain Boost

; passive <-> active via jack via jack 24.

A switch connected to this terminal 

*T

 controls

  

FX Loop

; off (bypassed) <-> on (enabled) via jack 22;

  

Master A/B; 

Master A <-> Master B via jack 23;

  

Channel 1< >2

; Channel 1 <-> 2 via jack 24.

page: 11

22

#1

#2

#2

#2

Footswitch connectors
(4 x stereo jack sockets)
located at the rear panel 
of the amp.

(21)

(22)

(23)

(24)

SERIAL AMP

CONTROL PORT

CAUTION:

CONNECT        CUSTOM

FOOTSWITCH Z-9 ONLY!

CHANNEL

1       2

GAIN BOOST

FOOTSWITCH

MASTER

A/B

TONE

FX LOOP

NOISE GATE

OFF-ON

S.A.C. PORT

#1

S.A.C. Out

The ENGL Z11-S.A.C. 
MIDI Switcher's rear panel

ENGL Z-9 
Custom Footswitch

ENGL Z-4 
dual footswitch

MIDI THRU

MIDI IN

LOOP 1 & 2

COM.  L2 L1

SERIAL AMP

CONTROL OUT

(S.A.C.)

MIDI SWITCHER / TYPE: Z11-S.A.C.

POWER
SUPPLY

             

ENGL M

IDI

F

OOTCONTROLLER

Z9, Z12, Z15

x

LOOP 3 & 4

COM.  L4 L3

12 Volts AC
12 Volts DC

300 mA

LOOP 5 & 6

COM.  L6 L5

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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