Engl Screamer 50 II Combo E330II User manual
E330II
Screamer 50 II
Operator´s Manual
A FEW WORDS FROM THE AMP DESIGNER
„Back in the mid of the nineties I designed the very rst Screamer amp and since then this very popular
amp obtained a several smaller updates including sound tuning and additional features.
Within this brand new fantastic combo amplier, the Screamer 50 Mark II, I have packed some clever
and useful ideas that offers you a broader spectrum of tonal palettes like the “Mid Boost Plusex” switch
matrix. And last but not least I spent many hours in some further sound tuning sessions, my favourite
labour that is at ENGL Amps.
I hope you will enjoy the results of all my efforts.“
Horst Langer
INTRODUCTION
The Screamer 50 Mark II delivers the sonic goods – tons of tone and palette of hip sounds from squeaky
clean to hi-gain shred and everything in between. This all-tube beast is your rst choice for many different
sound styles! With a host of practical features and a clearly-arranged control panel, handling this amp is
a piece of cake. The Screamer‘s opulent visuals are certainly arresting, but its unique, creamy tube tone
and silky spring reverb truly set this amplier apart. The Screamer comes complete with a bit of technical
wizardry which you‘ll nd useful where it counts most – out there in the real world of rehearsing and
gigging. Among these features are a Lo/Hi Gain switch, which in effect doubles your choice of channels
from two – Clean and Lead – to four – the afore-mentioned, plus Crunch and Heavy Lead. The built-in Noise
Gate helps stie the annoying hiss often generated when Gain Hi is engaged at very high gain levels. Other
trademark ENGL features include a second master volume (Master A/B), and an adjustable, switchable FX
loop (parallel/serial).
There are few more handy features to rave about: The Screamer amp sports our Serial Amp Control Port,
or S.A.C. Port for short. Plug an ENGL Z9 into it and get hip to some very convenient remote control options.
This footboard lets you activate the two channels directly in combination with Gain Lo/Hi and Master A/B
switching simply by tapping its four footswitches. And that affords you instant access to four sound varia-
tions at two different volume levels each. Moreover you can access further prominent features like Master
A/B, FX Loop off/on and Reverb off/on; the built-in Noise Gate is switchable via footswitch, too. In addition,
the amp comes with three stereo jacks designed to accept dual footswitches like the ENGL Z4 or a MIDI
switching system (e.g. ENGL Z11) for selecting the channels and other crucial Amp features.
Old world craftsmanship and highest quality components are part of what makes ENGL amps so special,
and the Screamer 50 Mark II is no exception. On that note, please read and heed the guidelines on handling
all-tube amps. The ENGL team is convinced that this amp will delight and inspire you.
Input
Input ¼“ (6,3mm) unbalanced input. Plug your guitar in here using a shielded cord.
Clean
Gain control for the Clean and the Crunch channel.
(Clean: set the Gain-button to the Lo position, Crunch: set the Gain-button to the Hi position).
Bright switch
Alters the EQ by boosting the upper treble range; effectiveness decreases at higher Gain settings; the
Bright feature affects all channels.
Lead
Gain control for the Soft Lead and the Heavy Lead channel. This knob determines the preamp´s input sen-
sitivity when the Soft Lead and the Heavy Lead channel is selected and, by extension, the preamp signal´s
saturation.
(Soft Lead: Gain Lo/Hi button disengaged; Heavy Lead: Gain Lo/Hi button engaged.)
CAUTION: Extremely high gain and volume levels in the Lead channels can produce powerful feedback. Avoid
feedback squeals, they lead to hearing loss and damaged speakers!
Bass
Bottom end voicing control of the preamp´s passive EQ.
Middle
Mid-range voicing control of the preamp´s passive EQ.
Treble
Upper range voicing control of the preamp´s passive EQ.
Lead Presence
This control denes the Treble response in the poweramp stage for the Lead channel.
Reverb
This controls adjusts the portion of the reverb signal and increases reverb intensity if you rotate it clock-
wise; the reverb can be switched on/off via the respective footswitch.
Lead Volume
Volume control for the Lead channel (pre-FX Loop, inuences the send level). Use this knob to dial in the
desired balance of levels between the Lead and Clean channels.
Gain Lo/Hi
When you press this button, the input sensitivity of both channels is increased. The Hi-Gain function actually
turns Clean into a „Crunch“ channel, and Lead into a „Heavy Lead“ channel. It can also be activated via a
suitable footswitch; the Gain Lo/Hi button is automatically disabled when you connect a footswitch. The
yellow LED illuminates to indicate „Hi-Gain“ mode is active.
Clean/Lead
Channel selector push-button for Clean and Lead modes, red LED indicate Lead mode; This function can also
be activated via the respective footswitch connected. Once a footswitch is connected, the channel selector
push-button is deactivated.
Master A
Master A volume knob. Located post effect loop, it controls power amp output. The red LED to the right of
the knob lights up to indicate Master A is enabled and determining the master level.
You can switch between and using a ENGL Z9 connected to the S.A.C. Port or a footswitch connected to the
TRS footswitch inputs.
Master B
Master B volume knob. Located post effect loop, it controls power amp output. The green LED to the right of
the knob lights up to indicate Master B is enabled and determining the master level.
Stand By
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. The standby switch is also well-suited for muting the amp for brief breaks, for instance when
you‘re switching guitars.
Power
Mains power on/off.
Please note: ensure that the Stand By switch is set to Stand By (0 position) before you switch the amp
on. Let the tubes heat up for about 30 seconds before you activate the power amp. This procedure spares
the tubes.
Main Supply Connector (AC Power Inlet, IEC – C14 connector)
Plug the mains cord in here.
CAUTION! 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, Instructions for the Preven-
tion of Fire, Electrical Shock and Injury.
Mains Fuse Box
The rear chamber contains the mains fuse and the front chamber a spare fuse.
NOTE: Ensure replacement fuses bear identical ratings (refer to the table)!
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.
Footswitch: Serial Amp Control Port (S.A.C.)
This serial data input accepts the optional ENGL Z9, which lets you control various amp functions remotely.
Connect the ENGL Z9 to the amp using a cord equipped with stereo 6.3 mm (¼“) jack plugs. This MIDI-ena-
bled footcontroller is a custom tool designed to switch every amp feature designated as foot switchable in
this manual. To learn if a given feature may be controlled remotely, refer to its description herein.
Heads up: Plugging a jack plug into the S.A.C. Port disables the Channel switching functions on the amp‘s
front panel. What‘s more, it also disables the standard 6.3mm (¼“) TRS footswitch remote-control capabi-
lity. In other words, when a ENGL Z9‘s board is plugged in, it has priority over the amp‘s Channel switching
controls as well as Channel switching via a standard 6.3mm (¼“) TRS footswitch.
CAUTION! Connect only the ENGL Z9 to this 6.3 mm (¼“) stereo jack!
Connecting any other switching device may damage it and/or the amp‘s circuitry!
Insert and remove the ENGL Z9 cable to and from the S.A.C. Port only when the amp is switched off!
Please note! Never link two S.A.C. Ports of ENGL amps via an Y-adaptor to a ENGL Z9! This can cause ground
humming noise and damage the internal circuits!
Footswitch: FX Loop, Noise Gate (conventional 6.3mm (¼“) TRS)
Use this jack to connect a conventional footswitch with two switching functions, for example, the ENGL Z4 (2
x off/on – Single Pole Single Throw or SPST for short).
Tip: switching the FX Loop on and off.
Sleeve: switching the Noise Gate on and off.
Footswitch Master A/B, Reverb (conventional 6.3mm (¼“) TRS)
Use this jack to connect a conventional footswitch with two switching functions, for example, the ENGL Z4
(2 x off/on – Single Pole Single Throw or SPST for short).
Tip: switching between Master A and Master B.
Sleeve: switching the Reverb on and off.
Footswitch Clean/Lead, Gain Lo/Hi (conventional 6.3mm (¼“) TRS)
Use this jack to connect a conventional footswitch with two switching functions, for example, the ENGL Z4
(2 x off/on – Single Pole Single Throw or SPST for short).
Tip: switching between Clean and Lead channels
Sleeve: switching between Clean and Crunch (in the Clean channel)
switching from Soft Lead to Heavy Lead (in the Lead channel)
Mid Boost Plusex
The sound function „Mid Boost Plusex“ is newly designed for the Screamer 50 Mark II Amp. It can be
activated via a selector switch located on the back panel of the amplier. With this function, you can create
your own individual sound, and thus expand the entire sound spectrum. It can be paired with either Gain
Lo/Hi or Master A/B.
There are four options to enable or automatically assign the Mid Boost feature:
1. Mid Boost off
for all settings of the amp (channels, gain levels, master)
- the Mid Boost sound function is generally disabled (off)
2. Mid Boost Plusex Hi Gain
- Mid Boost is automatically activated on „Gain Hi“
3. Mid Boost Plusex Master B
- Mid Boost is automatically activated on „Master B“
4. Mid Boost on
for all settings (channels, gain levels, master) of the amp
- the Mid Boost sound function is generally activated (on)
Noise Gate Threshold Level
This control activates the onboard Noise Gate serving to suppress any excess noise generated when the
Lead Channel or Lead Channel and Gain Hi are active. To this end, twist the knob clockwise, near or just
beyond the 9 or 10 o‘clock position. In addition the Noise Gate can be controlled remotely (on/off) via a
footswitch connected to the responsible footswitch jack or via the ENGL Z9 connected to the S.A.C. port. If
you want to control the Noise Gate remotely via footswitch, you must set the Threshold knob to 10 o‘clock
or beyond. Use this knob to set a threshold value (that is, the noise level) at which the Noise Gate activates
to suppress the signal within the 9 to 5 o‘clock range. The further you twist the knob to the right, the higher
the signal level at which the Noise Gate kicks in. If you set the knob to the 5 o‘clock position, the Noise Gate
reacts to extremely high noise levels, meaning that there‘s not much of a margin between the guitar signal
and background noise.
FX Loop
The FX Loop can be controlled remotely via a conventional footswitch connected to the responsible foots-
witch jack or via the ENGL Z9 connected to the S.A.C. port. In the signal path, the FX loop is located post
preamp and pre the two power amp Master knobs.
FX Loop Send
Connect the FX-Loop Send output to a signal processor‘s or an effect pedal´s input/return jack using the
shortest possible shielded cord equipped with 6.3mm (¼“) plugs.
FX Loop Return
Connect the input to a signal processor‘s or an effect pedal´s output/send jack using the shortest possible
shielded cord equipped with 6.3mm (¼“) plugs.
FX Loop Balance
FX mix control for the FX Loop. When the knob is set to Dry, 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).
Note: Set this knob to Dry when the FX Loop is not in use! Settings between 9 and 3 o‘clock position reduce
the signal level. In the event of contact corrosion of the FX Return socket, volume uctuations may occur.
Line Output – 0 dB Poweramp Signal
This port taps the power amp‘s output to provide a line out signal congured at a level of about 0 dB. The
frequency response is identical to that of the power amp output signal. In other words, its frequency res-
ponse is not compensated or corrected. You can feed this signal to another linear power amp. Another op-
tion is to patch it through an outboard lter to emulate a speaker, or for example into the ENGL CABLOADER
IR-Loader with an integrated microphone and poweramp simulation), and feed this externally processed
signal to a recording device or PA system.
Poweramp Output, 4 Ohms Parallel
4 ohms speaker output jacks, internal connected parallel.
Poweramp Output, 8 Ohms Parallel
8 ohms speaker output jacks, internal connected parallel.
Poweramp Output, 16 Ohms
16 ohms speaker output jack.
Cabinet options
1. One 4 Ohm cabinet connected to a 4 Ohm jack
Summary: 4 Z, --> connected to 4 Ohm output
2. Two 8 Ohm cabinets connected to the 4 Ohm jacks
Summary: 8 Z + 8 Z, --> connected to 4 Ohm + 4 Ohm output
3. One 8 Ohm cabinet connected to an 8 Ohm jack
Summary: 8 Z, --> connected to 8 Ohm output
4. Two 16 Ohm cabinets connected to the 8 Ohm jacks
Summary: 16 Z + 16 Z --> connected to 8-ohm + 8-ohm output.
5. One 16 Ohm cabinet connected to the 16 Ohm jack
Summary: 16 Z --> connected to 16 Ohm output
6. An 8 Ohm cabinet connected to one of the 4 Ohm jacks in combination
with a 16 Ohm cabinet connected to one of the 8 Ohm jacks
Summary: 8 Z + 16 Z --> connected to 4-ohm + 8-ohm output
Important Note:
Never operate the power amp without a sufcient load, otherwise you may damage or destroy it! Always
check the connected cabinets‘ impedance to conrm it matches the amp‘s output impedance! For example,
if you are connecting a cabinet to one of the two 8-ohms output, make sure the speaker system is indeed
rated for 8 ohms. You‘ll nd the various speaker and cabinet options listed in the section above. I cannot
stress enough the importance of proper impedance matching when connecting one or more cabinets to
your amp. Impedance mismatching can damage the power amp!
TECHNICAL DATA:
Output power: approx. 50 watts; adjusted accordingly to 4, 8 and 16 Ohm
Input sensitivity
Input: from -20 dB, nominal, max. 0 dB
Effect Return: from -20 dB, nominal, max. 0 dB
Output level
SEND, level range: from -20 dB to approx. 0 dB max.
Line Out: approx. 0 dB at nominal power output
Power consumption: approx. 220 Watt (260 VA) max.
Fuses:
220 / 230 / 240 supply voltage 1,25 AT L (T: slow-blow)
100 / 115 / 120 supply voltage 2,5 AT L (T: slow-blow)
Power Tube Fuses: 2 x 0,16 AM (M: medium-blow)
Important: Replace these with fuses oft he same type and rating only!
Tubes:
V1: ENGL ECC83 First Quality (FQ)
V2 / V3 / V4: ENGL ECC83 Selected
V5 / V6: ENGL 6L6GC Hand-matched duet
S.A.C.: Proprietary ENGL asynchronous data protocol
Dimension: 57,5cm x 48cm x 27cm
Weight: approx. 23kg
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