thomann the t.ampt E-800 User Manual

E-800

power amplifier

user manual

Musikhaus Thomann e.K.
Treppendorf 30
96138 Burgebrach
Germany
Telephone: [phone]
E-mail: [e-mail]
Internet: www.thomann.de

16.07.2012

Table of contents

1 General notes............................................................................................................................................... 4

2 Safety notes.................................................................................................................................................. 7

3 Installation and operation.................................................................................................................. 12

4 Connectors and controls...................................................................................................................... 18

5 Technical data........................................................................................................................................... 22

6 Protecting the environment.............................................................................................................. 24

Table of contents

E-800

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1

General notes

This user manual contains important information on safe operation of the device. Read and
follow all safety notes and all instructions. Save this manual for future reference. Make sure
that it is available to all persons using this device. If you sell the device to other users, be sure
that they also receive this manual.

Our products are subject to a process of continuous development. We therefore reserve the
right to make changes without notice.

This section provides an overview of the symbols and signal words used in this user manual.Symbols and signal words

General notes

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4

Signal word Meaning
DANGER! This combination of symbol and signal word

indicates an immediate dangerous situation
that will result in death or serious injury if it is
not avoided.

CAUTION! This combination of symbol and signal word

indicates a possible dangerous situation that
can result in minor injury if it is not avoided.

NOTICE! This combination of symbol and signal word

indicates a possible dangerous situation that
can result in material and environmental
damage if it is not avoided.

Warning signs Type of danger

Warning – high-voltage.

General notes

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Warning signs Type of danger

Warning – danger zone.

General notes

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2

Safety notes

Use the device only as described in this user manual. Any other use or use under other oper‐
ating conditions is considered to be improper and may result in personal injury or property
damage. No liability will be assumed for damages resulting from improper use.

This device may be used only by persons with sufficient physical, sensorial, and intellectual
abilities and having corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is responsible for their safety.

DANGER!
Danger for children

Ensure that plastic bags, packaging, etc. are disposed of properly and are not
within reach of babies and young children. Choking hazard!

Ensure that children do not detach any small parts (e.g. knobs or the like) from
the unit. They could swallow the pieces and choke!

Never let children unattended use electrical devices.

Intended use

Safety

Safety notes

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DANGER!
Electric shock caused by high voltages inside

Within the device there are areas where high voltages may be present. Never
remove any covers.

There are no user-serviceable parts inside.

DANGER!
Electric shock caused by short-circuit

Always use proper ready-made insulated mains cabling (power cord) with a pro‐
tective contact plug. Do not modify the mains cable or the plug. Failure to do so
could result in electric shock/death or fire. If in doubt, seek advice from a regis‐
tered electrician.

Safety notes

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8

CAUTION!
Possible hearing damage

With loudspeakers or headphones connected, the device can produce volume
levels that may cause temporary or permanent hearing impairment.

Do not operate the device permanently at a high volume level. Decrease the
volume level immediately if you experience ringing in your ears or hearing
impairment.

NOTICE!
Risk of fire

Do not block areas of ventilation. Do not install the device near any direct heat
source. Keep the device away from naked flames.

Safety notes

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9

NOTICE!
Operating conditions

This device has been designed for indoor use only. To prevent damage, never
expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and
strong vibrations.

NOTICE!
Power supply

Before connecting the device, ensure that the input voltage (AC outlet) matches
the voltage rating of the device and that the AC outlet is protected by a residual
current circuit breaker. Failure to do so could result in damage to the device and
possibly injure the user.

Unplug the device before electrical storms occur and when it is unused for long
periods of time to reduce the risk of electric shock or fire.

Safety notes

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10

NOTICE!
Magnetic fields

The device generates strong magnetic fields that can interfere with the function
of poorly shielded devices. The strongest magnetic fields are directly above and
below the power amplifier. Therefore, never place sensitive devices such as pre­amplifiers, radio transmission systems, or tape decks directly above or below the
power amplifier. When installing the power amplifier into a rack, you should place
it in the lowest position, and further equipment such as pre-amplifiers in the
highest position.

Safety notes

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3

Installation and operation

Unpack and check carefully there is no transportation damage before using the unit. Keep the
equipment packaging. To fully protect the device against vibration, dust and moisture during
transportation or storage use the original packaging or your own packaging material suitable
for transport or storage, respectively.

Establish all connections as long as the unit is switched off. Use the shortest possible high­quality cables for all connections.

DANGER!
Electric shock caused by high voltages at the power amplifier output

The output voltages of modern high-performance amplifiers may result in death
or serious injury.

Never touch the bare ends of loudspeaker cables when the amplifier is on.

Installation and operation

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12

NOTICE!
Magnetic fields

The device generates strong magnetic fields that can interfere with the function
of poorly shielded devices. The strongest magnetic fields are directly above and
below the power amplifier. Therefore, never place sensitive devices such as pre­amplifiers, radio transmission systems, or tape decks directly above or below the
power amplifier. When installing the power amplifier into a rack, you should place
it in the lowest position, and further equipment such as pre-amplifiers in the
highest position.

Installation and operation

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13

Balanced female XLR panel connectors are used for the signal inputs. Male XLR panel connec‐
tors are used for the signal outputs The figure and the table show the XLR pin assignment.

1 Ground
2 Signal (+)
3 Signal (–)

The figure and the table show the pin assignment of the ¼-inch (6.35-mm) jack plugs (unbal‐
anced and balanced).

1 Signal
2 Ground

1 Signal (+)
2 Signal (–)
3 Ground

XLR connectors for signal inputs
and outputs

Jack plug for signal inputs and
outputs

Installation and operation

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The following figure shows the pin assignment of the lockable speakON panel connector.speakON connector for loud‐

speaker connections

Installation and operation

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Depending on the individual application, the amplifier can be used in different operation
modes:

Stereo mode

The two amplifier channels operate independently of one another, either
channel (A and B) is amplified and connected to loudspeakers, the volume can
be controlled separately for the two outputs.

Parallel mode

The two amplifier channels receive the same input signal from channel A and
loudspeakers are connected to each amplifier, the volume is controlled via the
control knob for channel A.

Bridged mode

The two amplifier channels are internally connected in such a way that twice
the output power is available. Only the input signal from channel A is amplified
and loudspeakers are connected only to the correspondingly marked output.
The volume is controlled via the control knob for channel A.

Possible operation modes

Installation and operation

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For each output of the amplifier, the total impedance resulting from the loudspeakers con‐
nected to it must not be below the allowed minimal impedance of the amplifier output. If you
connect more than one loudspeaker to an amplifier output, please note the following:

n If the loudspeakers are connected in a series, the individual impedances will be added up.
n If the loudspeakers are connected in parallel, the reciprocal of the total impedance equals

the sum of the reciprocals of the individual impedances.

Example: If you have two loudspeakers with the same impedance, their impedance doubles if
they are connected in a series, their impedance halves if they are connected in parallel.

For detailed information related to this topic please refer to our Online Guide ‘PA Speakers’
(

www.thomann.de).

The device has been designed for rack mounting in a standard 19-inch rack; it occupies two
rack units.

Rack mounting

Installation and operation

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4

Connectors and controls

1 POWER

Power on/off switch. Switches the device on and off.

2 LED panel

SIG Indicates the presence of an input signal.

Front panel

Connectors and controls

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CLIP Lights under the following conditions:

n Channel overdrive.

In this case, reduce the volume until the LED turns off.

n Short-circuit at the output.

Immediately turn off the device, fix the short-circuit and turn on the device again.

PRO Lights under the following conditions:

n Three to five seconds after turning on or off when the device is in an unstable state.
n There is no loudspeaker connected.
n The temperature of the amplifier blocks has reached 85°C.
n One or more protection circuits have been triggered or the device is defective.

POWER This LED shows that the device is turned on.
PAR Lights when the device is operated in parallel mode.
BRI Lights when the device is operated in bridged mode.

3, 4 CHANNEL A,

CHANNEL B

Volume control for the respective channels.

Connectors and controls

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5 Power cord

6, 7 OUTPUT

Output channel B, A

n speakON panel connector as loudspeaker output (1+, 2+:positive; 1–, 2–: negative)
n Screw terminals

8 Ground/Lift switch

If there are hums due to a ground loop, you can use this switch to disconnect the protective earth connector from the
signal ground of the device.

Rear panel

Connectors and controls

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9 LIMITER

Limits the output level such that maximum distortion is 5 %.
10 Selector switch for input sensitivity
11 Fan
12 Selector switch for operating mode

n Parallel mode

n Stereo mode

n Bridged mode

13, 14 INPUT

Input channel B, A

n Female XLR panel connector

n ¼-inch (6.35-mm) jack (balanced or unbalanced)

15 BREAKER

Resettable fuse. The fuse disconnects the amplifier when the power consumption is too high, for example due to a

short-circuit. As soon as the problem is solved, the fuse will automatically be reset, the device will work again. Using

the switch, the reset can be enforced.

Connectors and controls

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5

Technical data

Power output (RMS)

Stereo, 8 Ω: 2 × 350 W
Stereo, 4 Ω: 2 × 500 W

Frequency response, –1 dB

20 Hz…20 kHz
Input sensitivity 0.77 V / 26 dB / 1.4 dB
Class H, 2 steps
Signal-to-noise ratio > 100 dB (A-weighted)
Total harmonic distortion, 50 % of maximum

power output

< 0.03 %

Inputs Female XLR panel connectors, ¼-inch (6.35-mm) jacks
Input impedance

20 kΩ (balanced), 10 kΩ (unbalanced)
Outputs speakON panel connector, screw terminals
Mains power supply

220 – 240 V (AC), 50 Hz

Technical data

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Power consumption 1500 W
Dimensions (W × D × H) 482 mm × 375 mm × 88 mm
Weight 11.3 kg

Technical data

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6

Protecting the environment

For the transport and protective packaging, environmentally friendly materials have been
chosen that can be supplied to normal recycling.

Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose of these materials with your normal household waste, but make sure that

they are collected for recycling. Please follow the notes and markings on the packaging.

This device is subject to the European directive 2002/96/EC.
Do not dispose of the device with your normal household waste.
Dispose of this device through an approved waste disposal firm or through your local waste

facility. When discarding the device, comply with the rules and regulations that apply in your
country. If in doubt, consult your local waste disposal facility.

Disposal of the packaging mate‐
rial

Disposal of your old device

Protecting the environment

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Notes

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Notes

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Musikhaus Thomann e.K. · Treppendorf 30 · 96138 Burgebrach · Germany · www.thomann.de