thomann the t.amp TA-50 User manual

TA-50
Power Amplier
User Manual

Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: [phone]
Internet: www.thomann.de
05.09.2023, ID: 328775 (V2)

Table of contents
1 General information................................................................................................................................. 5
1.1 Symbols and signal words............................................................................................................... 5
2 Safety instructions..................................................................................................................................... 7
3 Features.......................................................................................................................................................... 9
4 Installation and starting up................................................................................................................ 10
5 Connections and controls................................................................................................................... 11
6 Technical specications....................................................................................................................... 13
7 Plug and connection assignment.................................................................................................... 15
8 Cleaning....................................................................................................................................................... 17
9 Protecting the environment.............................................................................................................. 18
Table of contents
TA-50 3
Power Amplier

4TA-50
Power Amplier

1 General information
This document contains important instructions for the safe operation of the product. Read and
follow the safety instructions and all other instructions. Keep the document for future refer‐
ence. Make sure that it is available to all those using the product. If you sell the product to
another user, be sure that they also receive this document.
Our products and documentation are subject to a process of continuous development. They
are therefore subject to change. Please refer to the latest version of the documentation, which
is ready for download under www.thomann.de.
1.1 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 document.
General information
TA-50 5
Power Amplier

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.
WARNING! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in death or serious
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.
Warning signs Type of danger
Warning – danger zone.
General information
6TA-50
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!
Risk of injury and choking hazard for children!
Children can suocate on packaging material and small parts. Children can injure themselves when handling the device. Never allow
children to play with the packaging material and the device. Always store packaging material out of the reach of babies and small
children. Always dispose of packaging material properly when it is not in use. Never allow children to use the device without supervi‐
sion. Keep small parts away from children and make sure that the device does not shed any small parts (such knobs) that children
could play with.
WARNING!
Possible hearing damage due to operating the device at a high volume!
The device can produce volume levels that, when operated at a high volume, may cause temporary or permanent hearing impair‐
ment. Over an extended period of time, even levels that seem to be uncritical can cause hearing damage. Avoid operating the device
at excessively high volumes over an extended period of time. Decrease the volume level immediately if you experience ringing in
your ears or hearing impairment. If this is not possible, keep a greater distance or use adequate ear-mus.
Intended use
Safety instructions
TA-50 7
Power Amplier

NOTICE!
Damage to the device if operated in unsuitable ambient conditions!
The device can be damaged if it is operated in unsuitable ambient conditions. Only operate the device indoors within the ambient
conditions specied in the “Technical specications” chapter of this user manual. Avoid operating it in environments with direct sun‐
light, heavy dirt and strong vibrations. Avoid operating it in environments with strong temperature uctuations. If temperature uc‐
tuations cannot be avoided (for example after transport in low outside temperatures), do not switch on the device immediately.
Never subject the device to liquids or moisture. Never move the device to another location while it is in operation. In environments
with increased dirt levels (for example due to dust, smoke, nicotine or mist): Have the device cleaned by qualied specialists at reg‐
ular intervals to prevent damage due to overheating and other malfunctions.
NOTICE!
Interference with nearby electrical devices due to magnetic elds!
The device generates strong magnetic elds that can interfere with the function of poorly shielded devices. The magnetic elds are
strongest directly above and below the Power Amplier. You should 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 placing the Power Amplier in a rack,
you should place it at the bottom thereof, and place any other equipment at the top of the rack.
NOTICE!
Damage to the external power supply due to high voltages!
The device is powered by an external power supply. The external power supply can be damaged if it is operated with the incorrect
voltage or if high voltage peaks occur. In the worst case, excess voltages can also cause a risk of injury and res. Make sure that the
voltage specication on the external power supply matches the local power grid before plugging in the power supply. Only operate
the external power supply from professionally installed mains sockets that are protected by a residual current circuit breaker (FI). As
a precaution, disconnect the power supply from the power grid when storms are approaching or it the device will not be used for a
longer period.
Safety instructions
8TA-50
Power Amplier

3 Features
nMinimal space requirement
nIdeal for mounting on at panel displays, in suspended ceilings,…
nOutput power: 2 × 17 W @ 4 Ω (2 × 20 W max.)
nIntegrated limiter
nSuitable DC 24 V power supply included
nStandby feature
Features
TA-50 9
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.
The device is suited for mounting on at panel displays, in suspended ceilings etc. Two suit‐
able mounting brackets are included.
Installation and starting up
10 TA-50
Power Amplier

5 Connections and controls
.
. . ..
.
..
.
..
0 10
VOLUME
POWER
LIMITER
OFF ON
STEREO BRIDGE
INPUT
DC 24V IN SPEAKER OUTPUT
R L
POWER
OFF
AUTO
ON
ö # $ % & ' ( )
Connections and controls
TA-50 11
Power Amplier

1[STEREO | BRIDGE] | Switch for the “STEREO” (channels operate independently of each other) and “BRIDGED” (channels
are interconnected to form one channel with double output) operating modes.
2[LIMITER OFF | ON] | On/o switch for the integrated limiter.
3[VOLUME] | Volume control.
4[POWER] | Power indicator. The power indicator lights up green in normal mode and red in standby mode.
5[POWER OFF | AUTO | ON] | OFF switch position: Device is switched o. AUTO switch position: Device is switched on.
The device automatically switches to standby mode when no input signal is received for 15 minutes. ON switch posi‐
tion: Device is switched on, standby function is disabled.
6[DC 24V IN] | Phoenix terminals to connect the supplied 24 V power adapter for power supply.
7[INPUT] | Input socket (3.5 mm jack) for connecting the signal source.
8[SPEAKER OUTPUT] | Phoenix terminals to connect speakers in bridged (one speaker with 8 Ω) or stereo mode (two
speakers, each with 4 Ω), see wiring diagram on the unit.
Connections and controls
12 TA-50
Power Amplier

6 Technical specications
Amplier class D
Input impedance 10 kΩ
Output power 2 x 20 W @ 4 Ω
Frequency response 35 Hz…50 kHz, -3 dB
Signal-to-noise ratio -95 dB (4 Ω, 1 K)
Total harmonic distortion (THD) 6.5%
Damping factor (1 kHz, 8 Ω) >20 dBu
Sensitivity 330 mV (17 W, 4 Ω)
Gain 0…10 dBu
Attack 2800 ms
Protection circuitry Limiter
Control indicator Power
Power consumption max. 36 W
Power adapter Secondary current 1500 mA
Secondary voltage 24 V
Technical specications
TA-50 13
Power Amplier

Dimensions (W × H × D) 145 mm × 95 mm × 45 mm
Weight 0.6 kg
Ambient conditions Temperature range 0 °C…40 °C
Relative humidity 20%…80% (non-condensing)
Technical specications
14 TA-50
Power Amplier

7 Plug and connection assignment
This chapter will help you select the right cables and plugs to connect your valuable equip‐
ment in such a way that a perfect sound experience is ensured.
Please note these advices, because especially in ‘Sound & Light’ caution is indicated: Even if a
plug ts into the socket, an incorrect connection may result in a destroyed power amp, a short
circuit or ‘just’ in poor transmission quality!
Unbalanced transmission is mainly used in semi-professional environment and in hi use.
Instrument cables with two conductors (one core plus shielding) are typical representatives of
the unbalanced transmission. One conductor is ground and shielding while the signal is trans‐
mitted through the core.
Unbalanced transmission is susceptible to electromagnetic interference, especially at low
levels, such as microphone signals and when using long cables.
In a professional environment, therefore, the balanced transmission is preferred, because this
enables an undisturbed transmission of signals over long distances. In addition to the conduc‐
tors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers
the signal, but phase-shifted by 180°.
Since the interference aects both cores equally, by subtracting the phase-shifted signals, the
interfering signal is completely neutralized. The result is a pure signal without any noise inter‐
ference.
Introduction
Balanced and unbalanced trans‐
mission
Plug and connection assignment
TA-50 15
Power Amplier

1 Signal
2 Ground
1 Signal (in phase, +)
2 Signal (out of phase, –)
3 Ground
1 Signal (left)
2 Signal (right)
3 Ground, shielding
1/4" TS phone plug (mono,
unbalanced)
3.5 mm TRS phone plug (mono,
balanced)
Three-pole 1/8" mini phone jack
(stereo, unbalanced)
Plug and connection assignment
16 TA-50
Power Amplier

8 Cleaning
The fan grids of the device must be cleaned of any contamination, such as dust, etc. on a reg‐
ular basis. Before cleaning, switch o the device and disconnect mains-operated devices from
the mains. Only use pH-neutral, solvent-free and non-abrasive cleaning agents. Clean the unit
with a slightly damp lint-free cloth.
Fan grids
Cleaning
TA-50 17
Power Amplier

9 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 product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE) in its currently valid version. Do not dispose with your normal household waste.
Dispose of this device through an approved waste disposal rm 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
18 TA-50
Power Amplier

Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de