ENGL E810/20 ENGL E810/20 Tube Poweramp Manual

Tube

Amp

TUBE POWERAMP

810

Operator´s Manual

Please, first read this manual carefully!

Tube

Tube

Amp

Amp

Technology

Technology

In addition to delivering with that , the
compact, offers a number of in
a potent 2 x 20-watt package:

-> An to adjust the amp's input sensitivity and
to and . At the higher setting, the input is

sensitive enough pickups on guitars

-> Each Left and Right stereo channel features that let
you dial in . Volume A/B may be selected via a
footswitch or an external MIDI Switcher (e.g. ENGL Z11-S.A.C.).
You're sure to find that comes in very handy, especially when
playing .

-> The , yet another .
It offers with controls
for and controls for .
You can dial in and with a

clean and a lead configuration achieve excellent
tonal results

MIDI Switcher (e.g. the ENGL Z11-S.A.C.).

-> The power amp is equipped with

outputs

Dedicated Standby switches

-> for the power amp's left and right channels
enable single-sided operation.

Two safety systems:

-> Four power tube fuses protect the amp from damage
brought on by power tube defects/failure and ensure the amp does not shut
down. It continues to function on both channels, though the defective channel
operates at a perceptibly reduced output level. LEDs indicate which channel's
tube fuse has triggered. In addition, a thermal overload protector powers the
amp down if the it overheats because of a problem with the fan.

all-tube ENGL 810 Power Amp practical features

Input Gain switch match gain levels

various preamps FX processors

different volume settings

alternating rhythm and lead parts

Sound Set circuit trademark ENGL innovation

two independent EQ systems Presence A and Depth A

Sound Set A Presence B and Depth B Sound Set B

. Sound Set A/B is selected via a footswitch or an external

each channel.

top-notch tone typical EL84-driven flavor

for signals sent from the .

A and B volume controls

Volume A/B

two different power amp setups match them up

on the connected preamp to

impedance-matched 8 and 16-ohm speaker

This power amp's hallmarks include intelligent design features, superior
craftsmanship, impeccable finishing and highest quality components. Bear in mind,
though, that a few precautions will dramatically extend tube life (see handling
and care guide). The ENGL team would like

our product

and hope the brings you just as

satisfaction.
PLEASE NOTE:

guidelines on care and maintenance of tube amps on page 9 and 10.
Avoid operating errors and potential damage to the Power Amp by heeding the
guidelines and cautionary remarks in this manual. Under the heading Tips from the
designer, you'll come across practical tips on the aforementioned features
throughout the manual.
All critical information concerning the operation of this Power Amp is preceded by

NOTE CAUTION Read and heed

" ", " ", " " or some other eye-catching comment. We're
calling your attention to these remarks for reasons of safety or other compelling
motives, so please give them due consideration.

. We certainly enjoyed engineering this fine work of audio art for you,

ENGL TUBE POWER AMP 810 much joy and

Read the Operator's Manual carefully and thoroughly! You'll find

to thank you for your confidence in

3

CAUTION! Please read and heed the following:

You'll find an ancillary pamphlet accompanying this owner's manual entitled
Instructions for the Prevention of Fire, Electrical Shock and Injury. Be sure to read it
before you plug in and power up the Power Amp!

Contents:

1. ENGL Power Amp 810, 19" stereo rack power amp;

2. mains cord;

3. this manual;

4. a pamphlet entitled

Electrical Shock and Injury

Instructions for the Prevention of Fire,

.

FrontPanelFeatures

Onpage15ofthemanual,you'llfinddiagramsofthefrontandrearpanels.

1 GAIN P.A.

This button's setting determines the input sensitivity for both the left and right
channels of the power amp;
"on position" (button engaged): .

Atipfromthedesigner:

The 810 Power Amp offers quite a lot of gain, so you can plug a guitar straight into
it. If you set the Volume controls to 12 o'clock or higher and select High Gain mode
by pressing the Gain P.A. button (1), you will be able to push the power amp into
the overdrive zone, with plenty of saturation for certain styles such as snarling rock
riffs.
Use the Presence and Depth tone controls in combination with the Volume A and B
knobs to dial in four different sounds on the power amp and then access them via
footswitch. For example, you could configure a clean sound for single-coil pickups
by setting the Volume knobs (2 & 5) to around 12 o'clock, (7) in the 1­to-4 o'clock range, and (8) to somewhere between 11 and 3 o'clock. You
can coax vintage sounds with that typical EL84 flavor and moderate overdrive out
of the amp by setting (3 & 6) to somewhere between 1 and 3 o'clock in
combination with (10) and (11) set anywhere from 8 to 12
o'clock. If you add the guitar's volume knob to the sonic equation, you get a vast
spectrum of fine tonal distinctions. If you want to hit the input section a little
harder to strike a more aggressive note, set the L & R channels' Volume controls
between 3 and 5 o'clock. In combination with humbuckers, this should give you
enough juice for a lower gain lead sound. Be sure to dial back the activated Depth
knob to a position lower than 10 o'clock so the bottom end doesn't get muddy. If
you're aiming for a pristine clean sound with humbucking pickups, you will have to
back off the Volume knobs to a relatively low setting or select Low Gain mode on
the Gain P.A. This is done by ensuring the button is not pressed in.

Depth A

Volume B

Presence B Depth B

Input Gain High

Presence A

2 VOLUME LEFT A

Volume control A for the left power amp channel.

4

3 VOLUME LEFT B

Volume control B for the left power amp channel.

4 VOLUME A/B

switches between Volume A controls and Volume B controls,

"off position" (button not engaged): Volume A controls activated, red LED off;

"on position" (button engaged): Volume B controls activated, red LED lights up;
This feature can also be remote-controlled via a footswitch or a MIDI Switcher
connected to jack 20; the Volume A/B pushbutton is deactivated once a footswitch
is connected.

A tip from the designer:

Volume A/B switching serves to activate two different volumes:
In combination with a preamp, you can dial in one level for rhythm work,
and the other for leads, or even two different levels for soloing.

5 VOLUME RIGHT A

Volume control A for the right power amp channel.

6 VOLUME RIGHT B

Volume control B for the right power amp channel.

7 PRESENCE A

Power amp treble control A; affects both left and right channels.

8 DEPTH A

Power amp bass control A; affects both left and right channels.

9 SOUND SET A/B

Switches between (Presence A control and Depth A control)

Sound Set B

and (Presence B control and Depth B control);

"off position" (button not engaged): active, red LED off;

"on position" (button engaged): active, red LED lights up;
This feature can also be remote-controlled via a footswitch or a MIDI Switcher
connected to jack 20; the Sound Set A/B pushbutton is deactivated once
a footswitch is connected.

Atipfromthedesigner:

Benefits and practical application of Sound Set A/B switching:
This unique feature lets you combine various preamp configurations with the two
power amp EQ setups and , easily and conveniently. You
can tweak the power amp to shape the tone in different ways using the two
Sound Set EQs, thereby considerably extending your sonic spectrum.
The two power amp EQs let you sculpt different basic sounds, say clean and lead,
with great precision, so you can dial in exactly the sound you wish to hear. Let's
look at a typical example using a multi-channel preamp (that is, a dual clean/lead­channel device):

Sound Set A

Sound Set A

Sound Set B

Sound Set A Sound Set B

5

SoundSetA

PresenceAknobsettingbetween1and4o'clock;
DepthAknobsettingaround12o'clock;

SoundSetB

PresenceBknobsettingbetween9and1o'clock;

DepthBknobsettingsomewhereinthe12-to-3o'clockrange;
Activate the preamp's clean channel and : Lots of high end and a
moderate amount of low end yield crisp clean tone. Activate for the
preamp's lead channel (that is, overdriven preamp). Reduced treble and plenty of
low-end punch yield warm, assertive lead tone.

10PRESENCEB

PoweramptreblecontrolB;affectsbothleftandrightchannels.

11DEPTHB

PowerampbasscontrolB;affectsbothleftandrightchannels.

12 LEFT Ch. V4 & V5

This LED lights up as soon as the amp's left channel is activated via the Standby
switch (14). This tells you the left channel is ready to go. A flashing LED indicates
that a power tube fuse has triggered because of an overload or a defect in either
the V4 or V5 power tubes. See the tube map on page 13 for the positions of the
two tubes and their fuses in the chassis.

13 RIGHT Ch. V6 & V7

This LED lights up as soon as the amp's right channel is activated via the Standby
button (15). This tells you the right channel is ready to go. A flashing LED indicates
that a power tube fuse has tripped because of an overload or a defect in either the
V6 or V7 power tubes. See the tube map on page 13 for the positions of the two
tubes and their fuses in the chassis.

:

:

Sound Set A

Sound Set B

14 STAND BY LEFT

Left channel standby switch. Use this switch to silence ("0" indicated) the left
channel when you take a longer break. The power amp's tubes stay nice and
toasty, and the channel is ready to roll immediately when you ramp it back up to
full power. If you wish to use the right channel only, you must deactivate the left
channel with the Standby switch (14).

15 STAND BY RIGHT

Right channel standby switch. Use this switch to silence ("0" indicated) the right
channel when you take a longer break. The power amp's tubes stay nice and
toasty, and the channel is ready to roll immediately when you ramp it back up to
full power. If you wish to use the left channel only, you must deactivate the right
channel with the Standby switch (15).

6

A tip from the designer:

I suggest you get into the habit of using standby 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 power amp is
ready to run when you flip the Standby switch because the tubes are already warm
and don't require time to heat up. For breaks of 20 minutes and longer,
I recommend that you switch the amp off in order to conserve energy.

16 POWER

Mains power on/off.
Please note: ensure that the Stand By switches (14, 15) are both set to Stand By
(0 position) before you switch the power amp on. Let the tubes heat up for about
30 seconds before you activate the power amp channels. This procedure spares
the tubes.

CAUTION:

temperatures the amps's chassis can become very hot, therefore avoid
touching the topside and the rear panel surface!

After an extended period of operation and higher ambient

Rear Panel Features

On page 15 of the manual, you'll find diagrams of the front and rear panels.

17 Mains Connector

Plug the mains cord in here.

CAUTION:

Before you power the power 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 Prevention of Fire, Electrical Shock and Injury.

18 Mains Fuse Box:

The rear chamber contains the mains fuse and the front chamber a spare fuse.

CAUTION:

the same ratings as the original fuse! To this end, please refer to the fuse ratings
shown on the type panel.

19 GROUND LIFT SWITCH

This switch severs the circuit connecting the amp's internal ground to the wall
receptacle's ground terminal. You can set the switch to when you
have connected a signal processor and want to prevent the two
devices' grounds from forming a ground loop that manifests in annoying humming.

Please note:

circumstances, ensure the rocker switch is set to to earth the amp
to the mains ground, thereby preventing ungrounded line noise!

Make sure you use an intact mains line cord with a grounded plug!

ALWAYS make sure replacement fuses are of the same type and have

A ground loop is an extraordinary condition. Under ordinary

(AC Power Inlet, IEC - C14 connector)

Ground Floated

preamp or a

Ground

7

20 FOOTSWITCH: VOLUME A/B, SOUND SET A/B

Use this 1/4" stereo jack to connect a conventional footswitch with two switching
functions (for example, the ENGL Z-4, see page 15 for additional information) to

1. Switch between and (Mono contact).

2. Switch between and (Stereo contact).

A tip from the designer:

The switching functions and can also be executed via
a looper/switcher or other MIDI devices that feature two freely-programmable
(switching-) inputs. Depending on the type of MIDI device, you may have to split
the Footswitch stereo jack into two mono jacks. Each switching function requires
the mono or stereo contact (see page 15 for assignments) and the ground!

NOTE!

you may encounter a ground loop, especially if the amp and device (e.g. FX
processor) exchange signals!

21 INPUT RIGHT

This is the right power amp channel's signal input as well as the master input for the
rightandleftchannels.

A tip from the designer:

Input Right

both the right and left channels. The signal routed into (21) is
automatically patched to the left channel when there is no plug inserted in the
Input Left (22) jack. This lets you do things like plug a guitar straight into the
power amp and use both channels without having to fuss with Y cables and the
like.

If the switching and signal grounds are identical in the MIDI device, then

also serves as a master input when you want to feed a mono signal to

Volume A Volume B
Sound Set A Sound Set B

Volume A/B Sound Set A/B

Input Right

22 INPUT LEFT

Thisistheleftpowerampchannel'ssignalinput

23 Ventilation Duct / Fan

An ultra-quiet fan keeps your power amp cool inside the enclosure by channeling
hot air out.

ATTENTION:

air circulation is not impeded. Do not block or cover the V ,
the side and the top venting slots.

24 SPEAKER OUTPUT: 16 OHM RIGHT

16-ohm right channel speaker output jack for connecting one 16-ohm cabinet.

25 SPEAKER OUTPUT: 8 OHM RIGHT

8-ohm right channel speaker output jack for connecting one 8-ohm cabinet.

26 SPEAKER OUTPUT: 16 OHM LEFT

16-ohm left channel speaker output jack for connecting one 16-ohm cabinet.

27 SPEAKER OUTPUT: 8 OHM LEFT

8-ohm left channel speaker output jack for connecting one 8-ohm cabinet.

Install the Poweramp in a 19" rack in such a manner as to ensure

entilation Duct

8

A tip from the designer:

You can connect the following combinations of speakers or cabinets:

-> An 8-ohm cabinet to the 8-ohm jack of each channel;

-> A 16-ohm cabinet to the 16-ohm jack of each channel;

-> Two 16-ohm cabinets connected in parallel to the 8-ohm jack of each channel;
In theory, you could also connect two 8-ohm speakers or cabinets to each channel.
These two speaker systems would have to be wired externally in a serial circuit,
which would then need to be connected to one stereo channel's 16-ohm jack.
If you opt to use one stereo cabinet for both channels, make sure it is wired and
connected to work in stereo, otherwise the amplifier could be damaged!

IMPORTANT NOTE:

switch the other channel's STANDBY switch off. Never operate an active stereo
channel without a connected speaker, you may destroy the power amp!
Ensure your cabinet's specifications match the respective output's specs!

If you choose to use just one power amp channel, ensure you

Handling and Care:

Keep the Power Amp 810 safe from hard knocks and shocks. Tubes are fragile and
tendtosufferwhenexposedtomechanicalstress!
Let the power amp cool down before you transport it. Ten 10 minutes or so will do to
sparethetubes.

Tubes take some 20 seconds to warm up after you switch the power on, and about
two to three minutes before they are able to pump out full power. Make a habit of
giving your Power Amp 810 plenty of time to get toasty and of flipping the
Standby switches for short breaks.

Inordertosparethepowertubes and prolong their lifetime,werecommendtosetthe
Stand By switch to Stand By (0 ) before you switch the Power Amp 810 on.
Aftera period of 30 seconds you mayactivate thepower ampchannels by flipping the
StandByswitches.

Avoid storing the power amp in damp or dusty rooms to spare jacks, switches and
potentiometers.

position

Never use caustic or scouring detergents to clean the power 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 dissolve the
Poweramp's front and rear panel labels. Keep liquids well away from the power amp,
particularlytheinteriorofthehousing.

Makesureaircancirculateatthe rear panel (Ventilation Duct/Fan)andattheventing
slotson the topand onthe right sideof the power amp toallow for adequate cooling,
whichincreasescomponentlife.

9

Never operate an active stereo channel without an adequate load (a speaker, cabinet
orsuitableterminatingresistor).

High ambient temperatures place an additional strain on diverse components; so if at
allpossible, avoid operating the PowerAmp 810at temperatures far higher than30°C
for longer periods. Running the amp at mains voltages exceeding the nominal mains
inputvoltageoverlongerperiodscanalsoshortencomponentlife.

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) must checked and possibly adjusted when
replacingtubes,thisisajobbestlefttoexperiencedandauthorizedspecialists.

Troubleshooting

The Power Amp 810 will not switch on.

-> Does the necessary voltage level exist at the receptacle?

-> Is the power cord o.k.? Test it through exchanging it.

-> The mains fuse may have blown. Check the fuse and replace it with a fuse

of the same type and rating. If necessary; you'll find a spare fuse in the
mains fuse box's (18) front chamber

-> The temperature within the power amp may have spiked, perhaps because

ventilation ducts are obstructed, the fan malfunctioned, or ambient
temperatures are extremely high, all of which can trigger the internal thermal
cutoff. Set both Standby switches to "0" and allow the power amp to cool down.
See the chapter "Over-temperature protection" on page 11.

The Power Amp 810 is not providing an output signal / no sound is emanating
from the speaker.

-> Is at least one speaker connected to the speaker outputs Right and/or Left 8

or 16 ohms (24, 25, 26, 27)?

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

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

functional ? (-> Is there a break or short circuit in a cord?)

-> Unplug connected preamps and effectors and see if the Power Amp 810 works

fine without these peripheral devices. Plug in your guitar to the respective Input
jack (21 or 22) and set the Gain P.A. (1) option to .

-> Are the active Volume knobs of the given power amp channel set to a value

greater than 0? If any of these knobs is set to 0, no signal is routed to the
power amp's outputs.

-> The temperature within the power amp may have spiked, perhaps because

ventilation ducts are obstructed, the fan malfunctioned, or ambient
temperatures are extremely high, all of which can trigger the internal thermal
cutoff. Set both Standby switches to "0" and allow the power amp to cool down.
See the chapter "Over-temperature protection" on page 11.

Input Gain High

10

->Atube,internalfuseorothercomponentmaybedefective.Besuretotakethe

PowerAmp810toanauthorizedservicecenter.

Onechannelisprovidingfarlesspowerthanitshould.

->Adefectivepowertubetriggeredoneofthefuses(thepowertubefusehasblown).

OncethecorrespondingpowerampchannelisactivatedviatheStandbyswitch,the

twoLEDs (12)and (13) indicate this status by

flashing.

Haveaprofessionaltechniciancheckandreplacetheinternalpowertubefuse(s).

Thesamegoesforthetube(s)protectedbythefuse(s).Theymustalsobetested

andreplaced,ifnecessary,topreventfusesfromtriggeringagain.

Thespeakerisemittinghummingnoises:

-

> Is the Ground Lift switch (19) set to ? If you are operating the

power amp with other grounded gear (preamp, effect devices) connected,
this switch must be set to the Ground Floated position in order to prevent
ground loop hum. You may even hear humming even without a guitar
connected to your rig. Set the Ground Lift switch to the Ground position if the
other connected devices are not grounded (this is usually the case with external
power supply units and mains plugs lacking a ground terminal).

-> The two patch cords connecting the two L & R preamp outputs to the L & R

power amp inputs are another potential noise source. The duplicate ground
circuits can cause hum, depending on the type of cords and their routing. You
can possibly solve this problem by severing one of the two patch cords' ground
circuits, either by detaching the ground wire from one of the two patch cords
or by masking the ground terminal on one jack plug using insulating tape.

-> The amp and mains grounds are not connected properly or are altogether

disconnected. Have an experienced specialist check this.

-> Cords connected to the input may not be shielded properly. Replace them to

check if this is indeed the case.

-> The poweramp, signal or speaker cords or another unit in the setup may be

picking up interference from powerful magnetic fields (for example, of nearby
power transformers or electrical motors). Reposition the amp and connector
cables.

-> The power amp, signal or speaker cords or another unit in the setup may be

picking up radio signals, for example, from activated mobile telephones or
powerful local transmitting stations nearby. Switch off mobile phones while
troubleshooting noise problems.

LEFTCh.V4&V5 RIGHT Ch. V6 & V7

Ground

Over-temperature protection:

If the temperature within the power amp rises sharply, a thermal cutoff is triggered
to shut down the power amp to protect the components.
Overheating can be caused by insufficient ventilation, when both channels are
operated at peak loads for lengthy periods at very high ambient temperatures, or if
the built-in fan malfunctions. The thermal cutoff will automatically switch the amp
back on after it has cooled down to the point where the temperature in the
housing drops below a certain threshold.

11

Technical Data

Output power:
Input sensitivity

P.A: Low Gain:
P.A. High Gain:

approx. 20 watts max per channel.;
adjusted accordingly to 8 and 16 ohms;

0 dB nominal, max. 10 dB

-20 dB nominal, max. -10 dB

Power consumption:
Fuses:

Mains fuse:
at 220/230/240 mains voltage
at 100/115/120 mains voltage

power tube fuses:

Important:
Tubes:

V1:
V2, V3:
V4, V5:
V6, V7:
Consult Tube Map
to view tube array on page13!

Dimensions:
Weight:

approx. 120 watts max.;

0.63 ATL

1.25 ATL

4 x 80 mAM (0.08 amps medium blow);

Replace these with fuses of the same type
and rating only!

E

CC83/12AX7 F.Q., input tube;

ECC83 selected;

EL84, matched set;
EL84, matched set;
Replace tubes with selected sets only!

19", 1 rack space, depth: 235 mm (9.25");
approx. 5.6 kg

(0.63 amps slo-blo);
(1.25 amps slo-blo);

/12AX7

, 12.35 lb;

CAUTION! Please read and heed the following:

You'll find an ancillary pamphlet accompanying this owner's manual entitled
Instructions for the Prevention of Fire, Electrical Shock and Injury. Be sure to read it
before you plug in and power up the amp!

Note:

Technical specifications are subject to change without notice.

12

Tube Map Power Amp 810:

Output

Fan

Transformer

LEFT RIGHT

LEFT

RIGHT

V4 V5 V6 V7

r

r

e

e

w

w

o

o

P

P

e

b

u

T

EL84

Mains

RIGHT

Transformer

T

V1

u

ECC83

e

b

r

e

w

o

P

r

e

w

o

P

e

b

u

T

T

ECC83

ECC83

V2 V3

r

r

e

e

w

w

o

o

P

P

e

e

T

b

u

EL84

e

b

u

T

EL84

RIGHT

b

u

T

EL84

r

e

w

o

P

e

b

u

LEFT

BIAS

V4 V5 V6 V7

LEFT

Power Tube Fuses

the tubes and their function:

V1 - ECC83 (12AX7): input stage, left & right channel; grade: FQ selected;
V2 - ECC83 (12AX7): phase splitter left channel; grade: selected;
V3 - ECC83 (12AX7): phase splitter right channel; grade: selected;
V4, V5 - EL84: power tubes, left channel, matches set;
V6, V7 - EL84: power tubes, right channel, matches sets;

Tube replacement report:

1. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _

Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

2. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _

Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

3. Replaced on: _ _ _ _ _ _ _ 20 _ _ _ Replaced by: _ _ _ _ _ _ _ _ _ _ _ _ _ _

Replaced tubes: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Reason: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

13

Space for User Notes

14

Front panel layout

TUBE POWERAMP 810

GAIN

V

OLUME

V

P.

A.

OLUME

L

EFT

A

L

EFT

B

V

OLUME

V

OLUME

A / B

R

IGHT

A

P

RESENCE

V

OLUME

L&R

R

IGHT

B

A / B

A

D

EPTH

A

P

RESENCE

B

D

EPTH

S

OUND SET

L&R

B

L&R

L&R

R

Tube

V4

V6

&

&

Amp

V

5

V7

LEFT

RIGHT

C

H.

C

H.

2 31 4 5 6 7 8 9 10 11 1213 14 15 16

Rear panel layout

G

ROUND

L

REPLACE FUSE

ONLY WITH SAME

TYPE AND RATING !

IFT

GROUND
F

LOATED

G

ROUND

F

OOTSWITCHINPUT

RIGHT LEFT

V

OLUME

A / B

OUND SET

S

A / B

CAUTION !
KEEP THE FAN
AIRFLOW PATH

CLEAR !

17 18 19 20 21 22 23 24 25 26 27

Footswitch (20)

Stereo

1/4" jack

ring: SOUND SET A/B

Use a stereo

plug only!

tip: VOLUME A/B

sleeve: Ground, GND

page: 8

R

Tube Guitar Poweramp

TY

PE E810/20

Design by Horst Langer

MADE IN GERMANY

CAUTION !

DO NOT OPEN !

RISK OF ELECTRIC SHOCK !

DO NOT EXPOSE THIS EQUIPMENT

TO RAIN OR MOISTURE !

1/4" plug

Tube

Amp

!

Stereo

16 O

HM

SPEAKER OUTPUT

RIGHT

8 O

tip
ring

sleeve

HM

S

TAND BY

L

EFTRIGHT

16 OHM8 O

P

OWER

L

EFT

HM

IMPORTANT ADVICE:

NEVER OPERATE

AN ACTIVE

POWER AMP CHANNEL

WITHOUT AN

ADEQUATE LOAD !

Options for controlling the Power Amp 810 remotely:

Two-way footswitch (e.g. ENGL Z-4): Connect two-way

footswitches to the amp by plugging a stereo ¼ " cord
into jack no. 20.
Functions:

1. Volume A/B (4)

2. Sound Set A/B (9)
see page 5 and page 8 for more details.
As an alternative to a two-way footswitch, you can connect
a MIDI switcher (the ENGL Z11-S.A.C. or the ENGL MIDI
Footcontroller Z-15 will do nicely) to this jack (20)
to control the two switching functions.

20

Tube

Amp

FOOTPEDAL

Z-4

R

ON/OFFON/OFF

15

Tube

Tube

Amp

Amp

Technology

Technology

R

R

Gerätebau GmbH

Internet: www.engl-amps.com

Text, design, graphics and layout by

Horst Langer, Amp Designer

Germany