TW Audio T20i User manual

T20i Operation manual

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Operation manual T20i
Introduction
The T20i is a consequential transformation of our users requirements. A compact, 30cm
slim 2× 10“ / 1.4“ top in a symmetric construction, perfectly suitable for use in upright and
crosswise applications.
Thanks to the sophisticated driver arrangement and passive crossover the T20i has a cons-
tant directivity, horizontally as well as vertically. Particularly installations where low ceilings are
an issue and conventional two-way loudspeakers are a mere compromise, the T20i shows
its true potential.
The T20i comes standard with a rotatable 90° × 50° horn. With the optional 60° × 40° horn
thus there are four different dispersion angles possible.
Instructions in this user manual
CAUTION
WARNING
WARNING
Thank you for choosing a high-quality product “MADE IN GERMANY” from the brand
TW AUDiO.
If you lend your product to another party, inform that party of the safety-related operating pro-
cedures and hand over this assembly guide. If you require additional copies of this manual,
you can obtain them free of charge from TW AUDiO or download them from www.twaudio.de
Strictly adhere to the instructions contained in this operating manual that are marked as
follows:
This symbol in combination with the signal word “Warning” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to serious injury or even death.
This symbol in combination with the signal word “Warning” identifies a potentially hazardous
situation for persons with a pacemaker. Failure to comply with this safety instruction can lead
to serious injury or even death.
This symbol in combination with the signal word “Caution” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to light or moderate injury.

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Operation manual T20i
NOTE
TIP
Notes on the products
Read manual
before use!
Before using the device, carefully read the operating manual and keep it with the T20i loudspe-
aker.
General information
Operation manual: OM-T20i
Version 2.0 en, 01/2022
This symbol in combination with the signal word “Note” identifies a potentially hazardous
situation. Failure to comply with this safety instruction can lead to product damage.
This symbol in combination with the signal word “Tip” identifies additional information or
notes that will simplify working with TWAUDiO products on the basis of practical experience.
© by TWAMBO 2022; all rights reserved.
All information contained in this operating manual was correct to the best of our knowledge
at the time of printing.
Quality warranties or assurance of suitability for a certain type of use based on the technical
specifications, dimensions and weights are not granted by TWAMBO.
TWAMBO also shall not assume liability for any secondary damage (property damage and/or
personal injury) nor for the failure to comply with this operating manual!
TWAMBO reserves the right to update this document based on recent developments.
TWAMBO GmbH
Karl-Hofer-Str. 42
14163 Berlin
Germany
Phone : + 49 (0) 71 41-48 89 89 0
Fax: + 49 (0) 71 41-48 89 89 99
E-Mail: [email protected]
WWW: www.twaudio.de

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Operation manual T20i
Content
1. Safety | Intended use...................................................................................................... 5
2. Overview ........................................................................................................................ 7
2.1 Components ........................................................................................................... 7
2.2 Variants ................................................................................................................... 8
3. Technical specifications ................................................................................................ 10
3.1 Data sheet............................................................................................................. 10
3.2 Connection diagram .............................................................................................. 10
4. Commissioning............................................................................................................. 11
4.1 Setup .................................................................................................................... 11
4.2 M10 threaded inserts............................................................................................. 11
4.3 Rotating and changing the HF horn ....................................................................... 12
4.3.1 Rotating the HF horn ........................................................................................ 12
4.3.2 Changing the HF horn ...................................................................................... 13
4.4 Connection options ............................................................................................... 14
4.5 Operation .............................................................................................................. 14
4.6 Connecting the cable............................................................................................. 15
5. Transport and Storage.................................................................................................. 16
6. CE Conformity Declaration............................................................................................ 16
7. Disposal ....................................................................................................................... 17

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Operation manual T20i
1. Safety | Intended use
The T20i loudspeaker was developed for use in professional sound systems. The loudspea-
ker may only be used by trained and qualified personnel.
WARNING
WARNING
WARNING
NOTE
NOTE
Please adhere to the following safety instructions to avoid risks when operating loudspeakers.
Note the operating modes described in this operating manual. Other uses are not permis-
sible.
Damage caused by improper use is not covered by TWAMBO.
Loudspeakers generate an electromagnetic field. Persons with pacemakers are not permit-
ted to remain in the immediate vicinity of loudspeakers as the electromagnetic fields can
cause pacemakers to malfunction.
When working with heavy loads exceeding 20 kg (44 lbs.), use suitable aids (dollies, hoisting
slings, etc.). Multiple persons may be required depending on the situation.
Ensure that the units are in a stable position and are firmly attached. A falling loudspeaker can
result in serious personal injury and property damage.
When using and assembling TW AUDiO loudspeakers, only use materials specified by
TW AUDiO. These tasks must be performed by qualified personnel. Adhere to the applicable
safety regulations.
When setting up loudspeakers, ensure that they are not exposed to the following ambient
conditions:
• Direct sunlight
• Humidity
• Jolting
• Dust
Keep away from the immediate vicinity of loudspeakers that are operated at high sound pres-
sure levels. These loudspeaker systems are capable of endangering your health. Sound levels
beginning as low as approximately 90dBSPL can lead to long-term hearing impairment.
Avoid:
• Feedback
• Distorted signals (clipping) and
• Peaks resulting from switching on devices, plugging in devices or unplugging devices during
operation.
Such signals can lead to loudspeaker overload and ultimately to loudspeaker failure.

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Operation manual T20i
WARNING
NOTE
NOTE
Ensure that the loudspeaker is not exposed to permanent thermal overloads. Thermal over-
loads may cause a fire and result in serious personal injury and property damage.
Note that TWAMBO does not provide a warranty for damage that can be attributed to this type
of overload and therefore cannot be held liable for any secondary damage.
A permanent magnetic field is present in the immediate vicinity of loudspeakers. Ensure that
objects which react sensitively to magnetic fields are not located in the immediate vicinity of
the loudspeaker. In particular, this applies to magnetic storage media, magnetic stripe cards
such as debit cards and CRT displays. A distance of approximately one meter is sufficient to
avoid damage.
Check loudspeakers and accessory parts regularly for visible wear. This is essential to ensure
continuing fault-free operation. Worn parts should be replaced immediately. Spare parts are
available from TWAUDiO.

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Operation manual T20i
2. Overview
2.1 Components
1. Phaseplug
2. 10“ cone driver
3. Rotatable horn with 1,4“ compression driver
4. Front grill
5. 15 mm Multiplex enclosure - Warnex textured paint surface
6. M10 threaded insert for attaching accessories (8 pieces)
7. Type label
8. Standard i-series screw terminal
Figure 2.1 - Overview
1
3
4
56
7
2
8

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Operation manual T20i
2.2 Variants
The T20i loudspeaker is available as standard in a 90° x 50° horn version and optionally in a
60° x 40° horn version. The specified angles of radiation refer to the horizontal and vertical
radiation behavior of the HF horns. For this purpose interchangeable horn funnels are instal-
led. Which horn version is concerned can be checked on the side of the horn cone (see figure
2.2.1).
Figure 2.2.1 - Variants of the T20i HF horns
60°
60°
60°
40°
90°
90°
50°
90°

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Operation manual T20i
Figure 2.2.2 - setup of the T20i HF unit
The modular design of the tweeter unit allows a quick change between the different emission
characteristics. The complete tweeter unit consists of horn funnel (1), horn foot (2), driver
plate and compression driver.
TIP
1
2

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Operation manual T20i
red black
3. Technical specifications
3.1 Data sheet
Drivers 2x 10“ LF / 1x 1,4“ HF
Frequency response 60 - 18000 Hz
Power handling (program/Peak) 1000 / 2000 W
Impedance 8 Ω
Coverage (h x v) 90° x 50° or 60° x 40°
Max. SPL / 1m 138 dB
Dimensions (h x w x d) 600 x 300 x 400 mm [23.6 x 11.8 x 15.7 in]
Weight 24,3 kg [53 lbs]
Surface Warnex textured paint
3.2 Connection diagram
Figure 3.2 - Connection diagram

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Operation manual T20i
4.1 Setup
The T20i loudspeaker is designed for hanging, vertical and horizontal operation. TWAUDiO
provides a wide range of accessories to securely attach the loudspeaker.
NOTE
WARNING
4. Commissioning
WARNING
4.2 M10 threaded inserts
Before fitting the accessories follow the subsequent steps:
4. For the T20i loudspeaker M10 threaded inserts, various TWAUDiO accessories can be
mounted. For each product refer to the instructions. (If you have further questions, please
contact TW AUDiO Support.)
5. Note that the load capacity is limited to a single speaker.
3. Please note that once the countersunk screws are removed, water and moisture may
enter into the enclosure.
1. To remove the countersunk screws remove the texture paint by using a cutter knife. Avoid
damaging the surrounding paint to prevent chipping.
2. Remove for your application required countersunk screws. Use a hexalobular key with the
size of TX50.
NOTE
WARNING
Please note that when operating the T20i loudspeaker without front grill, the HF horn must
additionally be secured against falling out! (Sticking)
WARNING
Make sure that all system structures are located on a firm, level surface and that the surface
can bear the total weight!
Make sure the speakers are securely fastened to prevent personal injury and property damage.
TW AUDiO recommends using only the accessories specified by TWAUDiO for securing and
mounting loudspeakers.

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Operation manual T20i
WARNING
4.3 Rotating and changing the HF horn
By default, the HF horn of the T20i loudspeaker is oriented so that the horizontal beam angle is
90° and the vertical beam angle is 50°. In some situations it may be advantageous to change
the emission characteristics in the HF range. You can replace the standard high frequency
horn of the T20i loudspeaker with an optional 60° x 40° version. Proceed as follows:
1. Place the T20i loudspeaker on its back, with the speaker grill facing up. Make sure to
place the speaker on a clean, non-slippery surface.
2. To remove the front grill, a hexalobular key with the size of TX25 is required. Remove all
front grill mounting screws from the side of the loudspeaker (10 pieces). Lift the front grill
of the loudspeaker away. Secure the speaker against lifting and slipping if necessary with
a second person.
3. Pull the horn with the compression driver up and out of the speaker cabinet.
4. Turn the horn funnel 90°.
5. Insert the twisted horn funnel into the horn foot. To do this, press the horn funnel until it
snaps back into the horn foot with the click mechanism. Then check the tightness of the
horn funnel in the horn foot.
6. Attach the grill using the screws provided.
Please note that when operating the T20i loudspeaker without front grill, the HF horn must
additionally be secured against falling out! (Sticking)
4.3.1 Rotating the HF horn

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Operation manual T20i
1. Place the T20i loudspeaker on its back, with the speaker grill facing up. Make sure to
place the speaker on a clean, non-slippery surface.
2. To remove the front grill, a hexalobular key with the size of TX25 is required. Remove all
front grill mounting screws from the side of the loudspeaker (10 pieces). Lift the front grill
of the loudspeaker away. Secure the speaker against lifting and slipping if necessary with
a second person.
3. Pull the horn with the compression driver up and out of the speaker cabinet.
4. Insert the horn funnel to be changed into the horn foot. To do this, press the horn funnel
until it snaps back into the horn foot with the click mechanism. Then check the tightness
of the horn funnel in the horn foot.
5. Attach the grill using the screws provided.
Please note that when operating the T20i loudspeaker without front grill, the HF horn must
additionally be secured against falling out! (Sticking)
4.3.2 Changing the HF horn
Figure 4.3.2 - changing the HF horn
WARNING

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Operation manual T20i
4.4 Connection options
The T20i loudspeaker is equipped as standard with the i-series screw terminal.
NOTE
NOTE
4.5 Operation
Operation of the T20i speaker requires a DSP-Controller. For this purpose, only presets
developed by TW AUDiO are recommended. The TW AUDiO system racks are ideally suited
for this purpose.
Please note the technical data in section 3.1 on page 10.
NOTE
NOTE
As options there can be mounted a panel with cable gland (CG-option) or a panel with two
built-in speakON® jacks (SO-option).
Furthermore, a blind cover option is available.
All connection options are only available in black colour.
More information about the different connection options can be found in the respective opera-
ting instructions in the download area on the homepage of TWAMBO.
Before connecting the loudspeaker to the amplifier, ensure that the right preset has been
loaded.
Using a wrong, out dated or a preset not provided by TWAUDiO can lead to destruction of
the speaker.
Make sure that the amplifier’s specifications meet the requirements. Using an amplifier that
doesn’t meet the specifications can destroy the loudspeaker.

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Operation manual T20i
4.6 Connecting the cable
The pin connections of the T20i loudspeaker can be found in section 3.2 (“Connection dia-
gram”) on page 10.
The internal wiring of the T20i loudspeaker allows for parallel connection of multiple loudspe-
aker units.
NOTE
To create a cable connection with an amplifier rack from TW AUDiO, proceed as follows.
Ensure that the cable cross sectional area is sufficient (at least 1.5 mm²) to avoid power losses.
TW AUDiO recommends using the loudspeaker cables available from TW AUDiO.
When connecting the cables to the loudspeaker, ensure that polarity (+/-) and pin assignment
(1/2) are correct. Incorrect connection can lead to a significant change in the loudspeaker’s
sound characteristics and may damage the driver.
Please note that parallel connections will decrease the total impedance of your loudspeaker
configuration.
The total impedance and the resulting power of the speaker configuration must match the
output power of the amplifier.

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Operation manual T20i
as well as all model variants based on these, provided that they correspond to the original
factory models and have not been technically modified in any way.
Applicable directives:
• 2001/95/EG
• 2011/65/EU
Applicable national standards and technical specifications:
• DIN EN 18 800
• DIN EN ISO 12 100
• DGUV Vorschrift 17 und 18
• EN 50581: 2013-02
Berlin, Germany, January 1st, 2021
Bernhard Wüstner
6
5
This declaration applies to the following components
• T20i - 90° x 50°
• T20i - 60° x 40°
6. CE Conformity Declaration
5. Transport and Storage
NOTE
Due to the T20i loudspeaker weighing over 20 kg [44 lbs.], two persons are required to handle
and transport the unit.
Ensure that the front grill of the loudspeaker is not damaged during transport and storage.
Moisture can penetrate exposed wood surfaces and cause the wood to swell. A bent or bro-
ken front grill will no longer adequately protect the sensitive driver membranes.
In addition, larger dust deposits can significantly affect the functionality of a speaker mem-
brane. This is why the product should be transported and stored in a safe, careful, dry and
largely dust-free manner.
Copy and translation of the original CE Conformity Declaration:
We hereby declare that the below-referenced components by virtue of their design and
construction, and in the configuration placed on the market by us, satisfy the safety and
health requirements of the applicable EC directives. This declaration becomes invalid in
case of modifications that have not been approved by us.

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Operation manual T20i
7. Disposal
It is prohibited to dispose of used electrical equipment with household refuse.
All TWAMBOGmbH products are so-called B2B-products. This means that they are sold by
a commercial business to a commercial business. TWAMBO products that bear the trash can
symbol shown here may only be disposed of by TWAMBO.
The loudspeaker owner is legally responsible for proper disposal of used devices that do not
bear this symbol. This pertains to all products delivered prior to March 29, 2010. Nevertheless,
TWAMBO will also be happy to assist you in this case.
If you have any question regarding the disposal of used devices, please contact us under the
following telephone number:
+49 (0) 71 41 - 48 89 89 0
Thus, TWAMBO is in strict compliance with the Waste Electrical and Electronic Equipment
Directive (2012/19/EU) for the protection of our environment.
TWAMBO is registered under the following WEEE-reg.-no. with the German National Register
EAR as a B2B-manufacturer and distributor of electrical devices:
DE93295191
In countries outside of the European Union, comply with local regulations.

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Operation manual T20i
TWAMBO GmbH
Karl-Hofer-Str. 42
14163 Berlin
Germany
Phone: + 49 (0) 71 41-48 89 89 0
Fax: + 49 (0) 71 41-48 89 89 99
E-Mail: [email protected]
WWW: www.twaudio.de