Engl TUBE PREAMP 570 Operator's Manual
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Engl TUBE PREAMP 570 Operator's Manual

Full tube guitar preamp with midi-control
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TUBE PREAMP 570
Full Tube Guitar Preamp
with MIDI-Control
Operator´s Manual
Please, first read this manual carefully!

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  • Page 1 TUBE PREAMP 570 Full Tube Guitar Preamp with MIDI-Control Operator´s Manual Please, first read this manual carefully!
  • Page 2 Tube Tube Technology Technology...

  • Page 3: Table Of Contents

    Table of Contents page Introduction Features and Functionality at a Glance Contents Front Panel Features: Preamp Defeat; Clean and Crunch Channel Control Features Modern/Classic, Mega Lo Punch,Stereo FX Loop Input; Lead I and Lead II Channel Control Features Noise Gate Write/Copy Power Rear Panel Features:...

  • Page 4: Features And Functionality At A Glance

    Gain, Four basic channels Treble and Volume knobs. -> This bypass circuit lets you combine the 570 preamp Preamp Defeat Function: with further preamps or multi-effect processors to extend the range of your 19" rack system's sound-shaping options.

  • Page 5: Contents

    Simply plug in, play and be inspired by the tube tone of your ENGL 570preamp! A few words of wisdom from the designer: Though this preamp is relatively easy to handle and you're probably raring to give it a...

  • Page 6: Front Panel Features

    This option comes in handy when you want to insert another preamp or an effect processor into a serial loop along with the ENGL Preamp 570. If the other preamp can also be bypassed, you can switch between the two preamps on the fly or even run them both at the same time.
  • Page 7 10 and 3 o'clock. Try settings between 9 and 1 o'clock for pickups with high- output humbuckers or active pickups. Bear in mind the Gain Boost 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.
  • Page 8 ). The green LED to the right of the Clean Volume knob (11) lights up to indicate the Clean channel is active. The Clean channel may also be activated via MIDI program change, the ENGL Custom Z-9 Footswitch, or a dual footswitch.

  • Page 9: Modern/Classic, Mega Lo Punch,Stereo Fx Loop

    ), The yellow LED to the right of the Crunch Volume knob (13) lights up to indicate the Crunch channel is active. The Crunch channel may also be activated via MIDI program change, the ENGL Custom Z-9 Footswitch or a dual footswitch.

  • Page 10: Input; Lead I And Lead Ii Channel Control Features

    In this case, use Preamp Defeat FX Active Loop to switch to and fro between the 570 preamp and the connected outboard preamp or combine the two devices. 18 INPUT ¼" unbalanced input jack. Plug your guitar in here using a shielded cord.
  • Page 11 (a setting in the 9-to-1 o'clock range is recommended). If your power amp - say, an ENGL tube power amp - features a Presence knob, you could turn up the preamp's Treble knob a bit and back off the power amp's Presence knob when in Lead mode.
  • Page 12 This sound-shaping tool addresses midrange frequencies by slightly lowering the Mid knob's frequency spectrum. The LED above the button lights up to indicate Mid Edge activated. This feature can also be switched via MIDI program change or the ENGL Custom Z-9 Footswitch. A tip from the designer:...

  • Page 13: Noise Gate

    Remote control via (MIDI) footswitch is a nifty little utility: If your arsenal includes MIDI gear - for instance, the ENGL Z-15 MIDI Footcontroller - you can use the preamp's master volume mute circuit to swiftly and conveniently set the preamp's output level to 0 during short breaks or when switching axes.

  • Page 14: Write/Copy

    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 Noise Gate activated: Before you approach the preamp or 19" racksystem 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! A tip from the designer:...

  • Page 15: Power

    IMPORTANT note; please read and heed MIDI preset 1 activates when the preamp 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 MIDI In port (55) and use this outboard device to select the desired MIDI preset on the preamp.

  • Page 16: Noise Gate: Mute Depth, Threshold Level

    (33). A tip from the designer: Crunch Soft Lead Heavy Lead generate different levels of noise, and I tuned the ENGL 570 preamp's Noise Gate accordingly. However, there is some minor matching variance between the three. Heavy Lead...

  • Page 17: Stereo Fx Loop: Send, Return Right & Left

    44 & 45 FREQUENCY COMPENSATED LINE OUT BALANCED These are the frequency-corrected (compensated) and balanced right and left channel line outputs. Pin 2 and 3 of the XLR jack carry the signal, pin 1 = N.C. or ground depending on the position of the Ground switch (46). The signal routed to this output limits the response of a guitar cabinet.

  • Page 18: Auxiliary Input

    MIDI device. 55 MIDI IN 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. 56 lets you activate the preamp's power supply if you have an ENGL MIDI foot controller connected to this port.
  • Page 19 Poly channel to OMNI mode and vice versa. 58 FOOTSWITCH: SERIAL AMP CONTROL PORT This serial data input accepts the Custom ENGL Z-9 Footswitch (optional), which lets you control various preamp functions remotely. Connect the Z-9 Footswitch to the...
  • Page 20 The Z-9 controls the preamp via a proprietary ENGL serial data protocol, and the Serial Amp Control Port was developed exclusively for ENGL amps. No other foot board will...
  • Page 21 A few words from the designer on your ENGL 570 Preamp's sounds and settings as well as some practical tips: On the Subject of Sounds and Settings A great deal of effort went into tuning this tremendously versatile tube preamp; I devoted particularly painstaking attention to the details: The Clean and Crunch channels are matched so that their Gain ranges overlap somewhat;...
  • Page 22 Despite being so easy to use, the ENGL 570 preamp puts into the hands of the innovative, creative guitarist an all but inexhaustible bonanza of sound-shaping resources. And I am convinced that guitarists...
  • Page 23 gain thing in Crunch or Soft Lead modes, dial in a lower Threshold knob setting (below 12 o'clock) to prevent the gate from throttling notes (that is, the musically useful sounds) as they decay particularly if you like to work the guitar's volume knob. Programming sounds (settings, actually) to MIDI presets: For reasons of convenience and handling ease, we made programming sounds to MIDI presets a piece of cake.

  • Page 24: Handling And Care

    Running the preamp at mains voltages exceeding the nominal mains input voltage over longer periods can also shorten component life. Replace tubes with selected tubes that satisfy ENGL selection criteria to forestall microphonic properties, undesirable noise and loss of Gain. Tube replacement is a job...

  • Page 25: Glossary

    This option lets you access the preamp's Master Volume Mute function via a suitable MIDI foot board. This foot board must like the ENGL Z-15 - be able to send MIDI controller 07 data. In order to afford access to Master Volume Mute, this function must be enabled using the corresponding encoding button on the back of the preamp.

  • Page 26: Troubleshooting

    You can set the encoding button S1(57) 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? The preamp is not providing an output signal / no sound is emanating from the speaker/s.
  • Page 27 silence, hello humming! In this case, the preamp will hum even without a guitar connected. -> Cords connected to the input, effect loops or to the power amp may not be shielded properly. Replace them to check if this is indeed the case. ->...

  • Page 28: Technical Data

    MIDI controller 7 (main volume), value 0-5 = Master Volume Mute, Mute, value > 5 = default Master Volume level; Proprietary ENGL asynchronous data protocol Serial Amp Control: 19" rack, 2 rack spaces, 360 mm overall depth, Dimensions: approximately 300 mm chassis depth;...
  • Page 29 Tube Map: Power Transformer internal Mains Fuses Tube replacement report: 1. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _ Replaced tube(s): _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 2.

  • Page 30: Wiring Of Principal Connectors

    Pin 2 - power supply page: 18 approx.11 volts AC * *: AC voltage is routed to pin 1 and 2 only when button 56 is set to ENGL MIDI Footcontroller. Dual Footswitch (59) Serial Amp Control Port (58) Stereo Stereo 1/4"...
  • Page 31 MPN or press 9 to quit the Setup. 1. MIDI foot board (for example, the ENGL Z-12 or ENGL Z-15 pictured above): Connect the foot board to the preamp using a standard 5-pin DIN cable. All 5 terminals of both connectors must be wired in a 1:1 configuration: MIDI data transmission requires two wires, and the ENGL MIDI foot board uses two more wires for purposes of power supply.
  • Page 32 Noting Settings: TUBE PREAMP 570 LEAN RUNCH REBLE REBLE LEAN RUNCH FX L REAMP ORMAL LTRA ODERN IDDLE LEAN RUNCH M.L.P. EFEAT OOST RIGHT RIGHT LASSIC CTIVE LEAN RUNCH OLUME OLUME Tube ASTER REBLE REBLE ONTOUR OISE RITE OWER IDDLE...
  • Page 33 <------ 6 ------> <------------------------------ 7 -----------------------------> <--------------- 8 ---------------> <----------- 9 -----------> > 10 < 9 10 15 16 17 TUBE PREAMP 570 LEAN RUNCH REBLE REBLE LEAN RUNCH FX L REAMP ORMAL LTRA ODERN IDDLE M.L.P. LEAN RUNCH...
  • Page 34 Tube Tube Technology Technology Gerätebau GmbH Germany Internet: http://www.engl-amps.com Text, design, graphics, photography and layout by Horst Langer, Amp Designer...

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