t.amp E-1500 User manual

E-400, E-800,
E-1200, E-1500
Power Amplier
User Manual

Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: [phone]
Internet: www.thomann.de
27.03.2023, ID: 173888, 173889, 460282, 460283 (V4)

Table of contents
1 General information................................................................................................................................. 5
1.1 Further information........................................................................................................................... 6
1.2 Notational conventions.................................................................................................................... 6
1.3 Symbols and signal words............................................................................................................... 7
2 Safety instructions..................................................................................................................................... 9
3 Features....................................................................................................................................................... 12
4 Installation and starting up................................................................................................................ 13
5 Connections and operating elements........................................................................................... 17
6 Technical specications....................................................................................................................... 25
7 Plug and connection assignment.................................................................................................... 31
8 Cleaning....................................................................................................................................................... 35
9 Protecting the environment.............................................................................................................. 36
Table of contents
E-400, E-800, E-1200, E-1500 3
Power Amplier

4E-400, E-800, E-1200, E-1500
Power Amplier

1 General information
This user manual contains important information on the 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 another user, be sure
that they also receive this manual.
Our products and user manuals are subject to a process of continuous development. We there‐
fore reserve the right to make changes without notice. Please refer to the latest version of the
user manual which is ready for download under www.thomann.de.
General information
E-400, E-800, E-1200, E-1500 5
Power Amplier

1.1 Further information
On our website (www.thomann.de) you will nd lots of further information and details on the
following points:
Download This manual is also available as PDF le for you to download.
Keyword search Use the search function in the electronic version to nd the topics of
interest for you quickly.
Online guides Our online guides provide detailed information on technical basics
and terms.
Personal consultation For personal consultation please contact our technical hotline.
Service If you have any problems with the device the customer service will
gladly assist you.
1.2 Notational conventions
This manual uses the following notational conventions:
General information
6E-400, E-800, E-1200, E-1500
Power Amplier

The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
1.3 Symbols and signal words
In this section you will nd an overview of the meaning of symbols and signal words that are
used in this manual.
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 pos‐
sible dangerous situation that can result in minor injury if it
is not avoided.
NOTICE! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in material and
environmental damage if it is not avoided.
Letterings
General information
E-400, E-800, E-1200, E-1500 7
Power Amplier

Warning signs Type of danger
Warning – high-voltage.
Warning – danger zone.
General information
8E-400, E-800, E-1200, E-1500
Power Amplier

2 Safety instructions
This device amplies electric audio frequency signals to operate passive speakers. Use the
device only as described in this user manual. Any other use or use under other operating con‐
ditions 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 sucient 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.
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.
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. Do not use the device if covers, protectors or optical components are missing or damaged.
Intended use
Safety instructions
E-400, E-800, E-1200, E-1500 9
Power Amplier

DANGER!
Electric shock caused by short-circuit
Always use proper ready-made insulated mains cabling (power cord) with a protective contact plug. Do not modify the mains cable
or the plug. Failure to do so could result in electric shock/death or re. If in doubt, seek advice from a registered electrician.
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 re
Do not block areas of ventilation. Do not install the device near any direct heat source. Keep the device away from naked ames.
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. Only operate the device within the ambient conditions specied in the chapter
‘Technical specications’ of this user manual. Avoid heavy temperature uctuations and do not switch the device on immediately
after it was exposed to temperature uctuations (for example after transport at low outside temperatures). Dust and dirt inside can
damage the unit. When operated in harmful ambient conditions (dust, smoke, nicotine, fog, etc.), the unit should be maintained by
qualied service personnel at regular intervals to prevent overheating and other malfunction.
Safety instructions
10 E-400, E-800, E-1200, E-1500
Power Amplier

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 re.
NOTICE!
Magnetic elds
The device generates strong magnetic elds that can interfere with the function of poorly shielded devices. The strongest magnetic
elds are directly above and below the power amplier. Therefore, never place sensitive devices such as pre-ampliers, radio trans‐
mission systems, or tape decks directly above or below the power amplier. When installing the power amplier into a rack, you
should place it in the lowest position, and further equipment such as pre-ampliers in the highest position.
NOTICE!
Possible damage due to installation of a wrong fuse
The use of dierent types of fuses can cause serious damage to the unit. Fire hazard! Only fuses of the same type may be used.
Safety instructions
E-400, E-800, E-1200, E-1500 11
Power Amplier

3 Features
nLow installation depth
n2 × 290 W @ 4 Ω, 2 × 170 W @ 8 Ω (item no. 173888)
n2 × 420 W @ 4 Ω, 2 × 300 W @ 8 Ω (item no. 173889)
n2 × 880 W @ 4 Ω, 2 × 540 W @ 8 Ω (item no. 460282)
n2 × 1050 W @ 4 Ω, 2 × 640 W @ 8 Ω (item no. 460283)
nInputs: XLR, phone jack (balanced) and RCA (only for item no. 173888)
nOutputs: Speaker Twist and terminal clamps for speakers
nProtection circuits: DC, short circuit, over-temperature, limiter
nDefeatable standby function (only with item no. 173888 and for item no. 173889)
Features
12 E-400, E-800, E-1200, E-1500
Power Amplier

4 Installation and starting up
Unpack and check carefully there is no transportation damage before using the unit. Keep the
equipment packaging. To fully protect the product against vibration, dust and moisture during
transportation or storage use the original packaging or your own packaging material suitable
for transport or storage, respectively.
Create all connections while the device is o. Use the shortest possible high-quality cables for
all connections. Take care when running the cables to prevent tripping hazards.
DANGER!
Electric shock caused by high voltages at the power amplier output
The output voltages of modern high-performance ampliers may result in death
or serious injury.
Never touch the bare ends of loudspeaker cables when the amplier is on.
Installation and starting up
E-400, E-800, E-1200, E-1500 13
Power Amplier

NOTICE!
Magnetic elds
The device generates strong magnetic elds that can interfere with the function
of poorly shielded devices. The strongest magnetic elds are directly above and
below the power amplier. Therefore, never place sensitive devices such as pre-
ampliers, radio transmission systems, or tape decks directly above or below the
power amplier. When installing the power amplier into a rack, you should place
it in the lowest position, and further equipment such as pre-ampliers in the
highest position.
Installation and starting up
14 E-400, E-800, E-1200, E-1500
Power Amplier

Depending on the individual application, the amplier can be used in dierent operation
modes:
Stereo mode
The two amplier channels operate independently of one another, either
channel (A and B) is amplied and connected to loudspeakers, the volume can
be controlled separately for the two outputs.
Parallel mode
The two amplier channels receive the same input signal from channel A and
loudspeakers are connected to each amplier, the volume is controlled via the
control knob for channel A.
Bridged mode
The two amplier channels are internally connected in such a way that twice
the output power is available. Only the input signal from channel A is amplied
and loudspeakers are connected only to the correspondingly marked output.
The volume is controlled via the control knob for channel A.
For each output of the amplier, the total impedance resulting from the loudspeakers con‐
nected to it must not be below the allowed minimal impedance of the amplier output. If you
connect more than one loudspeaker to an amplier output, please note the following:
nIf the loudspeakers are connected in a series, the individual impedances will be added up.
Possible operation modes
Installation and starting up
E-400, E-800, E-1200, E-1500 15
Power Amplier

nIf 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 starting up
16 E-400, E-800, E-1200, E-1500
Power Amplier

5 Connections and operating elements
$ %
#
1[POWER] | Mains switch. Turns the device on and o.
2 LED panel
[SIG] | Indicates the presence of an input signal.
Front panel
Connections and operating elements
E-400, E-800, E-1200, E-1500 17
Power Amplier

[CLIP] | Lights under the following conditions:
nChannel overload
Reduce in this case the volume until the LED goes out.
nOutput short circuit
Turn o the device immediately, correct the short circuit and turn on the device again.
[PRO] | Lights under the following conditions:
nThree to ve seconds after switching on or o when the device is in an unstable condition.
nThe temperature of the amplier blocks has reached 85°C.
nOne or more protection circuits have been triggered, or the device is faulty.
[POWER] | Lights up green when the device is turned on.
In standby mode, the LED lights red. As soon as the unit receives a signal, it switches back to normal mode and the LED
will light up green again.
[PAR] | Lights when the device is operated in parallel mode.
[BR] | Lights when the device is operated in bridged mode.
3, 4 [CHANNEL A], [CHANNEL B] | Volume control for the respective channel
Connections and operating elements
18 E-400, E-800, E-1200, E-1500
Power Amplier

STANDBY
& ( ) * + , -
'
. /
5 IEC chassis plug with fuse holder
6[ON] [OFF] [STANDBY] | On / o switch for standby function. If the standby function is enabled, the device automati‐
cally switches to standby mode after fteen minutes without any input signal.
Rear panel E-400
Connections and operating elements
E-400, E-800, E-1200, E-1500 19
Power Amplier

7, 8 [OUTPUT] | Output channel B, A
nSpeaker Twist chassis connector for speaker output (1+, 2+: positive; 1–, 2–: negative)
nScrew terminals
9[GROUND] [LIFT] | Ground / lift switch. If hum is caused by a ground loop, you can use this switch to disconnect the
connection between the earth pin of the device and the signal ground of the device.
10 [LIMITER] | Limits the output level so that the maximum distortion is 5%.
11 Selector switch for operating mode
n[PAR]: Parallel mode
n[STE]: Stereo mode
n[BR]: Bridged mode
12 Selector switch for input sensitivity
13, 14 [INPUT] | Input channel B, A
nXLR chassis socket
n¼-inch (6.35-mm) jack (balanced or unbalanced)
nRCA socket
Connections and operating elements
20 E-400, E-800, E-1200, E-1500
Power Amplier