Tecware TDA Series User manual

Keep these important operatin instructions.
Check www.tecnare.com for updates
Operation Manual
TDA Series
Digital Advanced Amplifier

General Information
TDA Series Operation Manual
Ver.: 1.0_UK 12/2022
©EXEL ACOUSTICS SL; all right reserved
The information contained in this manual has been carefully
checked for accuracy, at the time of going to press, however
no guarantee is given with respect to the correctness.
Exel Acoustics SL accepts no responsibility for any errors or
inaccuracies that may appear in this manual or the products
and software described in it. Technical specications, dimen-
sions, weights and properties do not represent guaranteed
qualities. As manufacturers we reserve the right to make
alterations and modications within the framework of legal
provisions, as well as changes aimed at improving quality.
EXEL ACOUSTICS SL
CL Encinar, 282 – Pol. Ind. Monte Boyal
45950 Casarrubios del Monte (Toledo) Spain
Phone: [phone] Fax:
e-mail: [email protected] www.tecnare.com

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Operation Manual
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IMPORTANT SAFE INSTRUCTIONS
Before using our product, be sure to carefully read the manual and safe Instructions. Keep this document with the device
all time.
1. Read these instructions
2. Keep these instructions.
3. Heed all warnings.
4. Follow all SAFETY INSTRUCTIONS as well DAN-
GER and OBLIGATION warnings.
5. Only use attachments / accessories specied by Exel
Acoustics SL.
6. Do not use this apparatus near water.
7. Clean only with dry cloth.
8. Do not block any ventilation openings. Install in ac-
cordance with Exel Acoustics’ instructions.
9. Do not install near any heat sources such as radia-
tors, heat registers, stoves or other apparatus (includ-
ing ampliers) that produces heat.
10. Do not defeat the safety purpose of the polarized or
grounding type plug. A polarized plug has two blades
with one wide than the other. A grounding type plug
has two blades and a third pin are provided for your
safety. If the provided plug does not t into your out-
let, consult an electrician for replacement of the ob-
solete outlet.
11. Protect the power cord from being walked on or
pinched, particularly at plugs, convenience recepta-
cles and the point where they exit from the appara-
tus.
12. Unplug this apparatus during lightning storms or
when unused for long periods of time.
13. Refer all servicing to qualied service personnel.
Service is required when the apparatus has been
damaged in any way, such as power-supply cord or
plug damaged, liquid has been spilled or objects have
fallen into the apparatus, this apparatus has been ex-
posed to rain or moisture, does not operate normally,
or has been dropped.
14. Use the mains plug to disconnect the device from
mains.
15. Do not expose this equipment to dripping or splash-
ing and ensure that no objects lled with liquids, such
as vases, are placed on the equipment.
16. The mains plug of the power supply cord shall remain
readily operable.
17. Do not connect the unit’s output to any other voltage
source, such as battery, main source, or power sup-
ply, regardless of whether the unit is turned on or o󰀨.
18. Do not remove the top (or bottom) cover. Removal
of the cover will expose hazardous voltages. There
are no user serviceable parts inside and removal may
void warranty.
19. If the equipment is used in a manner not specied by
the Exel Acoustics, the protection of the equipment
may be impaired.
CAUTION: To reduce the risk of re of electric
shock, do not expose this device to rain or mois-
ture.
CAUTION: Do not remove any covers, loosen any
xings or allow items to enter any aperture.
CAUTION: The rear of the product may get hot.
Avoid direct skin contact during operation and for
at least 5 minutes after power has been isolated.
CAUTION: The product must only be positioned at
oor level when operated in a horizontal position.

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Operation Manual
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PRECAUCIÓN:Para reducir el riesgo de incendio
por desgarga eléctrica, no exponga este aparato a
la lluvia o a la humedad.
PRECAUCIÓN: No retire la cubierta, aoje torni-
llos o permita la entrada de elementos por ninguna
abertura.
PRECAUCIÓN: La parte trasera del equipo puede
calentarse. Evite el contacto directo con la piel du-
rante su funcionamiento y durante, al menos, 5 mi-
nutos después de que se haya apagado.
PRECAUCIÓN: El equipo solo debe colocarse en el
suelo cuando se opera en posición horizontal.
Antes de usar este producto, asegúrese de leer cuidadosamente el manual y las instrucciones de seguridad.
1. Lea estas instrucciones.
2. Conserve estas instrucciones.
3. Respete y siga todas las advertencias.
4. Siga todas las INSTRUCCIONES DE SEGURIDAD,
así como las advertencias de PELIGRO y OBLIGA-
CIÓN.
5. Utilice solo accesorios autorizados por Exel Acous-
tics SL.
6. No use este aparato cerca del agua.
7. Limpiar solo con un paño seco.
8. No bloquee las aberturas de ventilación e instalar de
acuerdo con las instrucciones de Exel Acoustics.
9. No instale el aparato cerca de fuentes de calor tales
como radiadores, calefactores estufas u otros apara-
tos que produzcan calor.
10. Esta unidad debe ser conectada mediante un cable
de alimentación de 3 hilos. Por razones de seguri-
dad, LA CONEXIÓN A TIERRA NO DEBE DESCO-
NECTARSE EN NINGUNA CIRCUNSTANCIA.
11. Proteja el cable de alimentación de ser pisado o
aplastado, especialmente los enchufes, receptáculos
y en el punto en el que salen del aparato.
12. Desconecte este aparato durante tormentas eléctri-
cas, terremotos o cuando no vaya a emplearse du-
rante largos periodos.
13. Confíe las reparaciones a personal cualicado. Se
equiere servicio cuando el aparato ha sido dañado
de alguna manera como por ejemplo si el cable de
alimentación o el enchufe está dañado, se ha derra-
mado líquido o han caido objetos dentro del aparato,
el aparato ha sido expuesto a lluvia o a la humedad,
no funciona con normalidad o se ha caído.
14. Desconecte completamente este aparato de la red
eléctrica desconectando el cable de alimentación.
15. No exponga este equipo a salpicaduras ni coloque
sobre él objetos que contengan líquidos, tales como
vasos o botellas. Equipo IP20.
16. El enchufe o la conexión a red debe ser facilmente
accesible.
17. No conecte la salida de la unidad a ninguna otra fuen-
te de voltaje, como batería o fuente de alimentación
independientemente de si la unidad está encendida
o apagada.
18. No retire la cubierta superior (o inferior). La retirada
de la cubierta lo expondrá a voltajes peligroso. No
hay piezas reparables por el usuario en el interior y
su extracción podría anular la garantía.
19. Si el equipo se utiliza de la forma no especicada por
Exel Acoustics, la protección del equipo puede verse
afectada.
IMPORTANTES INSTRUCCIONES DE SEGURIDAD

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Operation Manual
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SYMBOL USED
AVERTISSEMENT DE SECURITE
Pour déconnecter l’appareil de l’alimentation principale de façon permanente, débranchez le connecteur du câble fourni à l’arrière
de l’appareil.
Ne retirez pas les couvercles, ne desserrez pas les xations et ne laissez aucune pièce s’introduire dans les ouvertures.
Ne placez pas d’objets contenant du liquide à proximité de l’appareil.
Ne remplacez le fusible de réseau principal que par un fusible du même type.
Le radiateur arrière de cet appareil devient chaud. Evitez tout contact direct avec la peau pendant le fonctionnement et au moins
5 minutes après la mise hors tension de l’appareil.
Warning
Caution
Notice
tip or pointer
This simbol indicate Risk of injury. It is essential to observe this warning. Non-compliance can lead to serious
injury or death.
Este símbolo indica Riesgo de lesiones. Es fundamental observar esta advertencia. Su incumplimiento puede
provocar lesiones graves o la muerte.
This simbol indicate Personal injuries. It is essential to observe this warning. Non-compliance can lead to minor
or slight injury.
Este símbolo indica Lesiones personales.Es fundamental observar esta advertencia. Su incumplimiento puede
provocar lesiones leves.
This simbol indicate Damage to the devices or environment. It is essential to observe this warning. Non-compli-
ance can lead to damage to property or equipment or environmental damage.
Este símbolo indica Daños a los dispositivos o al medio ambiente. Es fundamental observar esta advertencia.
Su incumplimiento puede provocar daños al equipo o daños al medio ambiente.
This simbol indicate information that contributes to better understanding.
Este símbolo indica Información que contribuye a una mejor comprensión del producto.

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Operation Manual
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STANDARDS
FOR CUSTOMERS IN EUROPE
This product complies with both the LVD (electrical safety) 73/23/EEC and EMC (electromag-
netic compatibility) 89/336/EEC directives issues by the commission of the European com-
munity.
Compliance with these directives implies conformity with the following European standards:
EN60065 Product safety
EN55103-1 EMC emissions
EN55103-2 EMC immunity
This product is intended for the following electromagnetic environments: E1, E2; E3 & E4.
THIS PRODUCT MUST BE EARTHED. Use only a exible cable or cord with a green and yellow core which
must be connected to the protective earthing terminal of a suitable mains plug or the earthing terminal of the
installation. The cord must be a maximum of 2m long, have a 2.5mm2 CSA, a 300/500V rating and comply with
EN50525-2-11 / H05W-F.
THIS PRODUCT IS DESIGNED FOR PERMANENT INSTALLATION. It must be tted in to a 19” rack enclo-
sure and not operated unless so installed. The rack enclosure should be open at the front and back to allow free
ventilation and movement of air through the product.
FOR CUSTOMERS IN THE USA
This product has been tested for electrical safety and complies with UL60065 7th edition.
THIS PRODUCT MUST BE EARTHED. Use only a exible cable or cord with a green or green / yellow core which
must be connected to the protective earthing terminal of a suitable mains plug or the earthing terminal of the in-
stallation. The cord must be a maximum of 6’ long, be 14AWG, have a rating SJ, SJT, SJE or 300/500V H05W-F
and be marked VW-1.
THIS PRODUCT IS DESIGNED FOR PERMANENT INSTALLATION. It must be tted in to a 19” rack enclosure
and not operated unless so installed. The rack enclosure should be open at the front and back to allow free ven-
tilation and movement of air through the product.
DECLARATION OF CONFORMITY WITH FCC RULES
We, EXELAcoustics SL, CL Encinar 282, Pol. Ind. Monte Boya, 45950 - Casarrubios del Monte (Toledo), España,
declare under our sole responsibility that this family of devices, complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
FEDERAL COMMUNICATIONS COMMISSION NOTICE
An example of this equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential and commercial installation.
This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accord-
ance with the instructions, may cause harmful interference to radio communications. However, there is no guaran-
tee that interference will not occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment o󰀨 and on, the user is encouraged
to try and correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the distance between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit di󰀨erent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

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Operation Manual
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FCC Caution: Any changes or modications not expressly approved by the party responsible for compliance could
void the user’s authority to operate this equipment.
FOR CUSTOMERS IN THE CANADA
This product complies with CA /CSA C22.2 No.60065-03
Ce produit est conforme avec CA /CSA C22.2 No.60065-03
THIS PRODUCT MUST BE EARTHED. Use only a exible cable or cord with a green or green / yellow core which
must be connected to the protective earthing terminal of a suitable mains plug or the earthing terminal of the instal-
lation. The cord must be a maximum of 6’ long, be 14AWG, have a rating SJ, SJT, SJE or 300/500V H05W-F and be
marked VW-1.
CE PRODUIT DOIT ÊTRE MIS À LA TERRE. Utilisez uniquement un câble souple avec un noyau vert ou vert / jaune
qui doit être relié à la borne de terre de connecteur d’alimentation ou la borne de terre de l’installation. Le cordon
doit être un maximum de 6’ (2m) de long, 14 AWG (2.5mm2 CSA), être classé SJ, SJT, SJE ou 300/500V H05W-F
et être marquée VW-1.
THIS PRODUCT IS DESIGNED FOR PERMANENT INSTALLATION. It must be tted in to a 19” rack enclosure and
not operated unless so installed. The rack enclosure should be open at the front and back to allow free ventilation
and movement of air through the product.
CE PRODUIT EST CONÇU POUR UNE INSTALLATION PERMANENTE. Il doit être installé dans un boîtier rack
19-in. Le rack devrait être ouvert à l’avant et l’arrière pour permettre la ventilation et le mouvement d’air libre à travers
le produit .
DECLARATION OF CONFORMITY WITH CANADIAN ICES-003
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

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Operation Manual
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EXEL ACOUSTICS SL
CL Encinar, 282. Polígono Industrial Monte Boyal. 45950 – Casarrubios del Monte (Toledo), España (Spain).
Declara que la serie de amplicadores TDA y sus respectivas opciones, cumple con los objetivos de las Directivas:
Declare under our sole responsibility that the TDA Series amplier products comply with relating Directives:
(1) Directiva de Baja Tensión - 2014/35/UE
(2) Directiva de Compatibilidad Electromagnética - 2014/30/UE
(3) Directiva RoHS - 2011/65/UE
(4) Directiva RAEE - 2012/19/UE
(1) Low Voltage Directive 2014/35/EU
(2) EMC 2014/130/EU
(3) RoHS Directive 2011/65/EU
(4) WEEE Directive 2012/19/EU
Y es conforme a las siguientes Normas Armonizadas Europeas:
In compliance with these Harmonized European Norms:
(1) EN60065 8th. Audio, video and similar electronic apparatus. Safety requirements.
(2) EN55032:2012. EMC emissions & immunity.
(3) EN55035-2017
DECLARACIÓN DE CONFORMIDAD
DECLARATION OF CONFORMITY

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Table of Contents
www.tecnare.com TDA Series Amplifier | rev.:1.0
TDA Series
Table of Contents
IMPORTANT SAFE INSTRUCTIONS ______________________________ 4
IMPORTANTES INSTRUCCIONES DE SEGURIDAD _________________ 5
SYMBOL USED_______________________________________________ 6
STANDARDS_________________________________________________ 7
DECLARACIÓN DE CONFORMIDAD _____________________________ 9
DECLARATION OF CONFORMITY _______________________________ 9
1. Welcome and unpacking ______________________________________ 11
1.1. Welcome to Tecnare_________________________________ 11
1.2. Unpacking ________________________________________ 11
1.3. The User Guide ____________________________________ 11
2. Installation Instructions _______________________________________ 12
2.1. Mechanical Installations ______________________________ 12
2.2. AC Power Connection _______________________________ 13
2.3. Audio Connections _________________________________ 13
2.4. Cooling___________________________________________ 15
3. Technologies and Key features _________________________________ 16
3.1. Main Features _____________________________________ 16
4. Panel Interface User Guide ____________________________________ 17
4.1. Front Panel________________________________________ 17
4.2. The Rear Panel ____________________________________ 18
5. Technical Specications ______________________________________ 19

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Welcome
www.tecnare.comTDA Series Amplifier | rev.:1.0
TDA Series
1. Welcome and unpacking
1.1. Welcome to Tecnare
Thank you for choosing a Tecnare®TDA Series Digital Advanced Amplier for your application.
Please spare a little time to study the contents of this manual, so that you obtain the best possible
performance from this unit.
All Tecnare®products are carefully engineered for world-class performance and reliability.
If you would like further information about this or any other Tecnare®product, please contact us. We
look forward to helping you in the near future.
As part of a continuous evolution of techniques and standards, Exel Acoustics SL as manufacturer
of Tecnare® products reserve the right to change the specications of its products and the content of its docu-
ments without prior notice.
Updates and supplementary information are available on the Tecnare®website:
http://www.tecnare.com
Tecnare Technical Support is available at:
• (T): [phone] - [phone]
• (e-mail): [email protected]
Thank you again for placing your condence in Tecnare®products.
1.2. Unpacking
After unpacking the unit, please check carefully for damage. Every Tecnare product is tested and
inspected before leaving the factory and should arrive in perfect condition. If damage is found, please notify the
carrier concerned at once. You, the consignee, must instigate any claim. Please retain all packaging in case of
future re-shipment.
1.3. The User Guide
This user manual gives a progressively more detailed description of the functions of the Tecnare TDA
Series Digital Advanced Amplier. A detailed explanation of the front and rear panel controls, in conjunction
with Installation section, contains the basic information needed to safety install the amplier and place it in
service.
To complete the manual a reference section is included, describing the technical performance and
mechanical drawing of the device.

12
Installation
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TDA Series
2. Installation Instructions
2.1. Mechanical Installations
The TDA Series Amplier system is designed to be mounted in a standard 19” rack enclosure
Where the amplier is used in a xed installation, as long as the bottom unit is supported and there
are no gaps between units, it is acceptable to use only the front panel 19” rack holes when tting it in a standard
rack enclosure. If the amplier is mounted in a mobile rack it is important that the rear is supported with a rear rack
mounting kit (part number TDK-TS). Damage caused by insu󰀩cient support is not covered by the warranty.
To prevent damage to the front panel it is recommended that plastic cups or washers are tted under-
neath the rack mounting bolt heads.
It is possible to mount multiple TDA Series ampliers without ventilation gaps between them, but it is
essential that an unobstructed ow of clean air is available from the front of the unit to the rear (cooling mode of the
TDA Ampliers, also see “2.4. Cooling” on Page 15). It is important that neither the air intakes on the front of the
unit or the exhaust vents at the rear are covered. Steps must be taken to ensure that hot air does not continually
circulate through the amplier from the back of the rack to the front.
The amplier should never be exposed to rain or moisture during operation or storage. If the unit does
come into contact with moisture, disconnect the AC power cord immediately and leave it in a dry and warm location
to dry out.
299mm
45mm
MONO
BRIDGE
0.775V
STEREO
32dB
Class 2 Wiring
INPUTS
OUTPUTS
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RISK OF ELECTRIC SHOCK
DO NOT OPEN
TENSIÓN ELÉCTRICA EN EL INTERIOR -
NO MANIPULAR
CAUTION
PRECAUCIÓN
483mm
Fault
ClI P
SIGna l
POWERCH-B
Fault
ClI P
SIGna l
CH-A
TDA 4.8 Digital Ad vanced Amplifier

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Installation
www.tecnare.comTDA Series Amplifier | rev.:1.0
TDA Series
Note that when any equipment is taken from a cold location into a hot humid one, condensation may
occur inside the device. Always allow time for the equipment to attain the same temperature as its surrounding envi-
ronment before connecting the AC power cord.
2.2. AC Power Connection
The amplier is tted with a 3 x 2.5mm² power cord and a 3-pin Shucko (CEE 7/7) power connector.
If the power plug mounted at the factory is not appropriate for your country, it can be removed and
the proper connector wired in its place as follows:
BLACK or BROWN LIVE
WHITE or BLUE NEUTRAL
GREEN or GREEN&YELLOW EARTH (GROUND)
The ampliers are designed to operate on 50/60 Hz AC power (±10%). The power supply sections
automatically congure themselves for either 115V or 230V nominal voltage at turn on. The ampliers will operate
over an extended range of supply voltages (please refer to the technical specications). The threshold of these rang-
es are: [115V range = 100-126Vrms]; [230V range = 207 - 253Vrms].
Note that whilst the amplier will operate correctly at voltages indicated, the specied output power
will only be achieved when operating with the stated nominal voltages.
2.3. Audio Connections
2.3.1. Input connections
For each input channel there is a female XLR-3 connector for analogue inputs. The TDA Series can
be fed with up to two balanced analogue audio signals.
The analogue input panel also features two XLR-3 male link connectors passively wired to the input
connectors. They allow transmitting the input signal to daisy-chained amplier.
The HOT, + or ‘in phase’ connection should be made to pin 2 of the XLR connector.
The COLD, - or ‘out of phase’ connection should be made to pin 3 of the XLR connector.
Pin 1 of the XLR connectors is internally connected to the chassis.
The shield of the input cable should always be connected Pin 1 of the XLR to ensure the EMC per-
formance and regulations are met.
Fig. 02: PIN out assignment TDA Series Analogue Input/Link - Balanced connection
CAUTION: If you are not 100% condent of your competence to replace the mains plug,
engage qualied personnel to do the job.
IMPORTANT: It is the responsibility of the user to ensure that dirt, liquids and vapour from
theatrical smoke and fog machines is not ingested by the amplier. Damage so caused is not
covered by the manufacturer’s warranty.

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Connections
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TDA Series
2.3.2. Using unbalanced connection
Please note that the use of unbalanced connections is not recommended, however, when connect-
ing the amplier to an unbalanced audio source, the signal conductor should be connected to XLR pin2. The ‘Cold’
conductor or cable screen should be connected to XLR pin 1 with a short connection made between pin 1 and pin3
as shown in Figure 03.
Fig. 03: Balanced to Unbalanced Analogue wiring and PIN out
2.3.3. Amplier Output Connections
The TDA ampliers are tter with one SpeakON™ NL4 connector per amplier channel. The appro-
priate conductor terminations are shown below and on the rear panel of the unit.
Fig. 04 Amplier output connections - TDA Series
Additionally, the SpeakON™ NL4 connector for amplier channel 1 carries the output for amplier
channels 1 and 2. This can be useful for making a connection to two loudspeakers with one 4-core cable (i.e. Bi-amp).
Fig. 05 Amplier Output Bi-amp connexion (CH1) - TDA Series
In addition, the channel 1 can also be used if the pair of amplier channels is being operated in
bridged mode. It must be done, using the connection pin: 1+/2-
Fig. 06 Amplier Output Bridge connexion (CH1)
2+
1-
2-
1+
Speaker +
Speaker -
Bridge mode
Pin No. NL4# CHA
1+ CH1 o/p +
2- CH2 o/p -

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Connections
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TDA Series
2.3.4. Load Matching
Each output of the device can be optimised to drive either a low-impedance load (e.g. 2, 4 or 8
Ohms). The TDA Series ampliers have adequate current capability to fully drive loads up to two ohms, however,
many high-performance “8-ohm” loudspeakers, especially multi-way systems with passive crossover network, have
impedances at some frequencies which are far lower than the average rating. An impedance minimum of 2 ohms or
less is not uncommon. For this reason, speaker impedance curves should be consulted before connecting speaker
in parallel.
The TDA Series amps will do an outstanding job with any 8-ohm, full-range loudspeaker system, and
we expect equally outstanding performance when driving 4-ohm load. The 2-ohm load should be approached with
caution, as there is not further margin for impedance dips. The amp should not be damaged, but high-power opera-
tion into reactive 2-ohm loads may result in overheating or excessive AC current consumption, causing shutdowns.
In addition, some power may be lost at those frequencies where the impedance dips below 2 ohms. For these reason
the operation with 2-ohm load should be tested thoroughly before putting into use.
2.4. Cooling
The TDA Series devices use a force-air cooling system as follow: the cold air is sucked through the
ventilation hole of the front panel, and the heat is taken out from the rear panel. It allows high continuous power levels
without thermal problems.
2.4.1. Temperature Sensing and Protection
The TDA is equipped with a sophisticated temperature sensing system which protects it from any
overheating which may occur as a result of inadequate ventilation. If the temperature exceeds 85 degrees, the out-
put voltage will be reduced, avoiding an excessive temperature rise. If the temperature continues to increase up to
90 degrees, the power amplier will be shunted down. Once the temperature has fallen to a safe temperature, the
equipment will reboot automatically. After working for a while, if the cooling e󰀨ect is not enough, please turn o󰀨 the
equipment and remove the dust net cover to clean up the dust. If even doing this, the device still unable to recover
on its own, please contact our support team.
CAUTION: ever attempt to reverse the airow.
Make sure an adequate air supply is provided in front of the TDA, and that the rear
of the TDA has su󰀩cient space to allow air to escape. If the TDA is rack-mounted,
never operate the unit with any front or rear rack doors or covers in position. It is
recommended to keep the ambient temperature in the 0º~45ºC (32º~113ºF). An
increased temperature can have a signicant negative impact on the expected life-
time on the components inside the TDA.

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Key Features
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TDA Series
3. Technologies and Key features
TDA series is a high quality digital power amplier developed for both xed installation and portable
market. It incorporates a number of sophisticated technologies to ensure the best possible performance and many
years of reliable operation.
This series combines the exceptional e󰀩ciency of a Class-D amplier with the unique circuit archi-
tecture of the multi-loop control technology. According to the characteristics required in professional audio environ-
ments, the chassis structure is optimized, the operation is more intuitive, and can better meet the use of the narrow
space.
According to the characteristics of digital power amplier, the TDA Series design o󰀨ers a set of sci-
entic protection mechanism to ensure that the power amplier works stably in various complex environments.
3.1. Main Features
• High eciency, energy-saving and emission-reduction
• Small size, light weight, 1U rack space;
• Active Power Factor Correction (APFC)
• High reliability, meeting the requirements for high-quality audio system and engineering products
• Low noise of the power amplier and the mute fan
• The output background noise of the power amplier is small, and the fan noise is small, which meets
the requirements of near-eld use.
• Stereo/mono/bridge selectable
• 0.775V and 32dB, 2 grades gain selectable
• Balanced XLR input, Speakon output
• Clipper limiter: prevent the output square wave damaging the speaker
• Amplier output DC protection
• Output overload/short-circuit protection
• High temperature power compression, over-temperature protection
• Undervoltage protection for power supply

17
Panel Interface
www.tecnare.comTDA Series Amplifier | rev.:1.0
TDA Series
4. Panel Interface User Guide
4.1. Front Panel
Fig. 7 Front panel
4.1.1. The Front Panel Layout
1. Volumen Control
Calibrated potentiometers provide individual attenuation for each amplier channel. Range is 0 (innite)
to 11. The 12 o’clock position indicates 6 level.
2. Front-Panel LEDs
Front-panel LED area includes a set of three indicators show “Signal”, “Clip” and “Fault” for each of
amplier channels:
Green LED - Signal: Signal levels. The signal present Indicators operate at approximately –32 dBu..
Yellow LED - CLIP: Current peak limiter. The Clip Indicators- warn the user of input overload and oper-
ate at distorsion by more than 1%. The power is compressed.
Red LED - Fault: Protection mode. Please turn down the unit.
3. LED Power
Green LED: Power on.
Yellow LED: Temperature warning.
4. Power Switch
Applies mains power to the device.
Fault
ClI P
SIGna l
POWERCH-B
Fault
ClI P
SIGna l
CH-A
TDA 4.8 Digital Advanced Amplifier
3
12
4

18
Panel Interface
www.tecnare.com TDA Series Amplifier | rev.:1.0
TDA Series
4.2. The Rear Panel
Fig.8 Rear panel
1. Audio Input Connectors
Analogue Audio Input Connectors- All audio connections are fully balanced and wired: pin-1 to ground
(as required by the AES48 standard), pin-2 hot & pin-3 cold. At the left of each input there is an Analogue
Audio Link Connectors. It carries a duplicate (parallel) connection (to another amplier for example).
2. DIP Switches
The following features may be adjusted using the DIP-Switches on the rear panel of the amplier.
• Sensitivity Switch: Globally set for the two channels at 0.775V or +32dB (26dB in
TDA1.3 amplier)
• MODE Switch:
◦ STEREO Mode: Channel A and Channel B work independently. The output
Channel A is from the CHA input signal, and the output Channel B is from CHB input
signal.
◦ MONO Mode: Channel A and Channel B work independently. CHA input signal,
feeds output CHA and CHB.
◦ BRIDGE: Channel A+B; Switch the channel pair into a bridge mode opera-
tion.
3. Loudspeaker Connector CH1
The amplier NL4 SpeakON™ outputs. Connect the loudspeaker to the 1+ and 1- terminals. Output
socket 1 also carries the (duplicated) loudspeaker output for channel 2 on terminals 2+ and 2-. For
Bridged mode, use terminals 1+ and 2- on CH1.
4. Loudspeaker Connector CH2
Connect the loudspeaker to the 1+ and 1- terminals. Terminals 2+ and 2- are not connected.
5. Power Supply Input
Main input 100-240V operation. Not selectable. 3 x 2.5 mm² Power cord.
MONO
BRIDG E
0.775 V
STERE O
32d B
Class 2 Wiring
INPUTS
OUTPUTS
www.tecnare.com
RISK OF ELECTRIC SHOCK
DO NOT OPEN
TENSIÓN ELÉCTRICA EN EL INTERIOR -
NO MANIPULAR
CAUTION
PRECAUCIÓN
125
34
MONO
BRIDG E
0.77 5 V
STERE O
32 dB
IMPORTANT: The device must be earthed to a suitable power earth; failure to do so may aect
performance and/or operation and will invalidate warranty and could be potentially hazardous.

19
Specications
www.tecnare.comTDA Series Amplifier | rev.:1.0
TDA Series
5. Technical Specications
General
Number of input channels 2
Input types 2 x Analogue + 2 x link
Max ambient temperature (full power, no limiting) 45degC (113degF)
Number of output channels 2
Audio
Amplier modulation scheme Proprietary Multi-Loop control technology architecture - Class D
Dynamic range (analog input to speaker output) >100dBA typ (20Hz - 20kHz, 8Ω)
Frequency response ±0.2dB (10% Rate Power, 20Hz-20kHz, 8Ω)
Total harmonic distortion, THD+N Typical: 0.05% (10% Rated Power, 1kHz, 8Ω)
Inter-channel crosstalk (worst combination of
channels) >75dB (Below Rated Power, 20Hz - 1kHz, 8Ω)
Damping factor (Ref 8 Ohms) Typical: 1000(20Hz-200Hz)
Maximum analog input level +21dBu
Analog input sensitivity Rated output Power,
1kHz 0.775Vrms or 32dB
Analog input impedance 20k Ohm, electronically balanced
Analog link Directly connected to the analog input
Analog ground scheme AES48 standard compliant
Power Output
Model TDA1.3 TDA3.6 TDA4.8
Power specication RMS output power per channel, all channels driven @1kHz continue sine wave and a nominal ambient tem-
perature of 40degC / 105degF, THD+N=1%
Crest Factor of 7.8 (18dB), 2-Ω
nominal load (Note 1) 700W 1.800W 2.400W
Crest Factor of 4.8 (14dB),
4-Ohm nominal load 450W 1.200W 1.800W
Crest Factor of 2.8 (9dB),
8-Ohm nominal load (Note 1) 300W 800W 1.200W
Bridged, per channel pair, 4
Ohm load (Note 1) 1.300W 3.600W 4.800W
Bridged, per channel pair, 8
Ohm load (Note 1) 900W 2.400W 3.600W
RMS Voltage 49.0V 80.0V 98.0V
Note 1: Test condition=20ms

20
Specications
www.tecnare.com TDA Series Amplifier | rev.:1.0
TDA Series
Power supply
Topology (main power supply) 3rd generation Series Resonant
Mains input voltage range (automatically congu-
red) 100V to 253V AC
Mains input frequency range 47Hz to 63Hz.
Protection System
System protection Speaker protection
Excessive output current Audio soft-clip limiter
Excessive Voltage Limit DC o󰀨set protection
Over Temperature
Overload Protection
Mains voltage out of range
Physical
Cooling Variable speed fans
Airow Front to back
Air ltration PPI5 Washable media.
Analog IN and LINK connectors XLR Connector
Audio output connector NL4 SpeakON®
Mains input 3 x 2.5mm² Power cord
Front panel pot Two, lineal pot
LED indicators Bright, easily di󰀨erentiated
Enclosure Standard 19”/ 1HU (45mm) and optional rear support system
Depth 296mm / 11,6-in
Net Weight
TDA1.3 TDA3.6 TDA4.8
4,25kg. / 9.37lbs 4,9kg. / 10.8lbs 5,1kg. / 11,24lbs
Gain Comparation
Model TDA1.3 TDA3.6 TDA4.8
Rated Power 8Ωnominal load 300W 800W 1.200W
32dB Gain correspond to
input sensitivity (26dB in
TDA1.3)
2.45Vrms 2.0Vrms 2.45Vrms
10dBu 8.23dBu 10dBu
Gain corresponding to 0.775v
input sensitivity 900W 2.400W 3.600W
RMS Voltage 36.0dB 40.3dB 42.0dB