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freeU Twin HT,
freeU Twin PT
UHF wireless system
user manual
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Musikhaus Thomann
Thomann GmbH
Hans-Thomann-Straße 1
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
E-mail: info@thomann.de
Internet: www.thomann.de
02.05.2019, ID: 432864, 432866, 432869, 432870 (V4)
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Table of contents
Table of contents
1 General information................................................................................................................................. 5
1.1 Further information........................................................................................................................... 6
1.2 Notational conventions.................................................................................................................... 7
1.3 Symbols and signal words............................................................................................................... 8
2 Safety instructions.................................................................................................................................. 10
3 Features....................................................................................................................................................... 14
4 Installation and starting up................................................................................................................ 16
4.1 General Information........................................................................................................................ 16
4.2 Receiver............................................................................................................................................... 17
4.3 Handheld microphone (HT series)............................................................................................. 19
4.4 Bodypack transmitter (PT series)................................................................................................ 20
5 Connections and controls................................................................................................................... 21
5.1 Receiver............................................................................................................................................... 21
5.2 Handheld microphone................................................................................................................... 27
5.3 Bodypack transmitter..................................................................................................................... 30
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Table of contents
6 Operating.................................................................................................................................................... 33
6.1 Receiver............................................................................................................................................... 33
6.2 Bodypack transmitter..................................................................................................................... 34
7 Technical specications....................................................................................................................... 36
7.1 Receiver............................................................................................................................................... 36
7.2 Handheld microphone................................................................................................................... 38
7.3 Bodypack transmitter..................................................................................................................... 40
8 Plug and connection assignment.................................................................................................... 42
9 Troubleshooting...................................................................................................................................... 45
10 Protecting the environment.............................................................................................................. 48
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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
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General information
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
Online guides
Personal consultation For personal consultation please contact our technical hotline.
Service
Use the search function in the electronic version to nd the topics of
interest for you quickly.
Our online guides provide detailed information on technical basics
and terms.
If you have any problems with the device the customer service will
gladly assist you.
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1.2 Notational conventions
This manual uses the following notational conventions:
General information
Letterings
Displays
The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
Texts and values displayed on the device are marked by quotation marks and italics.
Examples: ‘24ch’ , ‘OFF’.
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General information
Instructions
The individual steps of an instruction are numbered consecutively. The result of a step is
indented and highlighted by an arrow.
Example:
1. Switch on the device.
2. Press [Auto].
3. Switch o the device.
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.
Automatic operation is started.
ð
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General information
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.
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.
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Safety instructions
2 Safety instructions
Intended use
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This device is intended to be used for the wireless transmission of audio signals from micro‐
phones or instruments to ampliers or active speakers. Use the device only as described in this
user manual. Any other use or use under other operating 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 sucient 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.
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Safety
Safety instructions
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.
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.
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Safety instructions
NOTICE!
External power supply
The device is powered by an external power supply. Before connecting the
external power supply, ensure that the input voltage (AC outlet) matches the
voltage rating of the device and that the AC outlet is protected by a residual cur‐
rent circuit breaker. Failure to do so could result in damage to the device and pos‐
sibly the user.
Unplug the external power supply before electrical storms occur and when the
device is unused for long periods of time to reduce the risk of electric shock or
re.
NOTICE!
Risk of re due to incorrect polarity
Incorrectly inserted batteries may destroy the device or the batteries.
Ensure that proper polarity is observed when inserting batteries.
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Safety instructions
NOTICE!
Possible damage by leaking batteries
Leaking batteries can cause permanent damage to the device.
Take batteries out of the device if it is not going to be used for a longer period.
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Features
3 Features
The UHF wireless system is particularly suitable for professional audio transmission, for
example, at events, on rock stages and in concert halls, theatres, musicals or night clubs.
The UHF Wireless System freeU Twin HT is comprised of the following components:
n 9.5" Diversity receiver
– Two antennas for optimum reception quality
– Infrared interface for sending the frequency selection from the receiver to the trans‐
mitter
– Outputs: 2 × XLR, 1/4" phone socket
– solid metal housing, 19" rack mountable (1 RU)
– Power supply: AC 12 V
n Transmitter: 2 battery-powered handheld microphones with supercardioid characteristics
n Two antennas, a suitable power supply, an installation kit for the rack mounting of a
receiver and a microphone holder are included
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Features
The UHF Wireless System freeU Twin PT is comprised of the following components:
n 9.5" Diversity receiver
– Two antennas for optimum reception quality
– Infrared interface for sending the frequency selection from the receiver to the trans‐
mitter
– Outputs: 2 × XLR, 1/4" phone socket
– solid metal housing, 19" rack mountable (1 RU)
– Power supply: AC 12 V
n Transmitter:
– 2 battery-powered bodypack transmitters
n Two antennas, a suitable power supply, an installation kit for the rack mounting of a
receiver and two instrument cables are included
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Installation and starting up
4 Installation and starting up
4.1 General Information
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.
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Installation and starting up
Notes on wireless transmission
4.2 Receiver
Rack mounting
n This device utilizes frequencies that are not harmonized within the European Union (EU)
and therefore may only be used in certain EU member states. In all European countries, the
frequencies used for the transmission of audio signals are strictly regulated. Before you
start, make sure the frequencies are allowed in the respective country and check whether
the operation must be reported to the appropriate authority.
For more information, please visit: http://www.thomann.de.
n Make sure that transmitter and receiver are both tuned to the same channel.
n Never set multiple transmitters to the same channel.
n Make sure that there are no metal objects between the transmitter and receiver.
n Avoid interference from other radio or in-ear systems.
The unit has been designed for rack mounting in a standard 19" rack; it occupies one rack unit.
The xing material required for assembly is included.
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Installation and starting up
Connecting the power supply
NOTICE!
External power supply
The device is powered by an external power supply. Before connecting the
external power supply, ensure that the input voltage (AC outlet) matches the
voltage rating of the device and that the AC outlet is protected by a residual cur‐
rent circuit breaker. Failure to do so could result in damage to the device and pos‐
sibly the user.
Unplug the external power supply before electrical storms occur and when the
device is unused for long periods of time to reduce the risk of electric shock or
re.
First, connect the power adapter to the receiver and then plug the power adapter into the
power outlet.
Attaching the antennas
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Attach the included antennas to the rear panel of the transmitter. To improve the transmission
quality and to adapt to the spatial conditions they are rotatable and swivelling.
In case the space provided on the device for direct assembly of the antennas is not sucient,
for example because the space on the rack is narrow, you can use the optionally available
coaxial cable to assemble the antennas separately from the device.
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Installation and starting up
Connecting audio and starting
up
Connect the audio outputs of the receiver to your mixer or your amplier. Depending on the
application, you can choose between the cabling variant ‘2 × XLR’ or ‘1 × phone jack summed’.
4.3 Handheld microphone (HT series)
Inserting batteries
Unscrew the bottom housing section of the hand-held microphone. Insert the batteries. Pay
attention to the correct location of the poles. The correct battery arrangement is illustrated in
the battery compartment. Close the battery compartment, screw the bottom housing section
back on, and switch the transmitter on.
Make sure that you screw open the complete lower housing part. Do not screw open
the threaded ring above the antenna.
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Installation and starting up
4.4 Bodypack transmitter (PT series)
Inserting batteries
Connecting microphone of
instrument
Squeeze the battery compartment lid, ip it open and and insert the batteries. Pay attention to
the correct location of the poles. Close the battery compartment and switch the transmitter
on.
n Ensure that the transmitter is switched o.
n Connect the microphone or instrument cable to the input on the transmitter (mini-XLR
panel connector).
n Turn on the transmitter and check the transmission by using the microphone or instru‐
ment. If necessary, adjust the amplication of the transmitter and the levels on your
mixing console or your amplier.
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5 Connections and controls
5.1 Receiver
Front panel
Connections and controls
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Connections and controls
Operating element, each for channel A (left) and channel B (right)
1 [VOLUME]
Volume control to adjust the audio output level.
2
Increases the displayed value by one.
3
Opens the menu.
4
Decreases the displayed value by one.
5 Display
6 [IR]
Infrared interface
7 UHF antennas
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Rear panel
Connections and controls
7 [ANT A], [ANT B]
UHF antenna connections
8 Main switch, turns the device on and o.
All previous settings are retained even when you switch the device o and disconnect it from the mains.
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Connections and controls
9 [12V]
Socket for connecting the supplied AC power supply. If you are using a dierent power supply, observe the correct
voltage, the polarity of the plug and the power consumption.
10 [BALANCED OUTPUT A], [BALANCED OUTPUT B]
XLR chassis plug as balanced audio signal outputs for direct connection to a mixer, power amp or recording device.
11 [UNBALANCED OUTPUT]
1/4" phone socket as unbalanced audio signal output with the sum signal from channels A and B for direct connec‐
tion to a mixer, power amp or recording device.
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Display
Connections and controls
Operating elements, each for channel A (left) and channel B (right)
12 [AF]
Level display for the audio signal
13 [RF]
Level indicator for the received radio signal
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Connections and controls
14 [GROUP]
Indicates the selected frequency group.
15 [CHANNEL]
Indicates the selected channel.
16 [IR]
Indicates data transfer via infrared interface.
17 [ANT-A], [ANT-B]
Shows which of the two antennas is currently being used for signal transmission.
18 [FREQ]
Indicates the frequency that is assigned to the set combination of frequency group and channel.
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5.2 Handheld microphone
Connections and controls
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Connections and controls
21 Display
22 Microphone head grill to prevent damage and to reduce wind and breath noise.
23 Infrared sensor
24 Main switch
Slide the switch all the way forward to turn on the microphone. Slide it all the way back to turn it o. Set the switch to
the centre position to mute the microphone.
25 Lower housing part. Unscrew to open.
Make sure that you screw open the complete lower housing part. Do not screw open the threaded ring above the
antenna.
26 Indicating the frequency range in which the device operates. The specication here must match the specication
printed on the back of the receiver.
27 Battery holder for two round cell batteries (AA, LR06), 1.5 V or comparable rechargeable batteries.
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Display
Connections and controls
28 Battery level indicator. Replace the batteries when only one blinking bar remains
displayed. Reduces the voltage of the batteries even further if the transmitter is
automatically switched o.
29 [GROUP]
Indicates the selected frequency group.
30 [CHANNEL]
Indicates the selected channel.
31 [IR]
Indicates data transfer via infrared interface.
32 Indicates the set frequency that is assigned to the set combination of frequency
group and channel.
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Connections and controls
5.3 Bodypack transmitter
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Connections and controls
41 Display
42 Antenna
43
Increases the displayed value by one.
44
Opens the menu.
45
Decreases the displayed value by one.
46 [IR]
Infrared sensor
47 Battery holder for two round cell batteries (AA, LR06), 1.5 V or comparable rechargeable batteries.
48 Mini-XLR chassis plug for connecting a microphone or instrument.
49 Volume control
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Connections and controls
50 Main switch
Press the switch for several seconds to switch the device on or o.
51 Retaining clamp
Display
52, 53,54[NAME], [BANK], [CH]
No function.
55 [FREQ]
Indicates the set frequency that is assigned to the set combination of frequency
group and channel.
56 Battery level indicator. Replace the batteries when only one blinking bar remains
displayed. Reduces the voltage of the batteries even further if the transmitter is
automatically switched o.
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6 Operating
6.1 Receiver
Operating
Selecting frequency
Perform the following steps for channel A and channel B.
1.
Press .
The display [GROUP] ashes.
ð
2. Use the arrow keys to select the frequency group.
Press to conrm the selection.
The display [CHANNEL] ashes.
ð
3. Use the arrow keys to select a channel within the set frequency group.
Press to conrm the selection.
The display [PO.x] ashes.
ð
4. Use the arrow buttons to select the level for the radio signal in a range from 5 mW (PO.1)
to 30 mW (PO.4) (this option is omitted for the t.bone freeU HT 863 and the t.bone freeU
PT 863).
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Operating
Press to conrm the selection.
The settings are complete.
ð
Synchronizing transmitter and
receiver
6.2 Bodypack transmitter
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Perform the following steps for channel A and channel B.
1. Turn on the transmitter and open it to uncover the infrared sensor.
2.
Press on the receiver for several seconds. The display [IR] ashes.
3. Turn the transmitter o and then straight away back on again. Within ten seconds, hold
the infrared sensor of the transmitter near the infrared interface of the receiver.
4. When synchronization has been successfully completed, the [IR] indicator stops ashing
and the level display [RF] shows a high transmission level.
After three seconds, the display shows the default state again.
ð
The keys for operating the device are located under the ap on the front side.
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Operating
Select frequency
If you don't want to synchronize the transmitter with the receiver using the infrared interface,
you can also set the transmission frequency manually.
1. Press [SET] until the numeric value ashes in the display.
2. Use the arrow buttons to select the frequency.
Press [SET] to conrm the selection.
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Technical specications
7 Technical specications
7.1 Receiver
Input connections Voltage supply Socket for connecting the plug-in power
supply.
Output connections Audio signal output 1/4" phone socket (unbalanced)
Audio signal output 2 × XLR panel plug, balanced
Frequency range
Sensitivity –11 dBm (sinad ≥ 30 dB)
Total harmonic distortion (THD) < 0,5 % (1 kHz)
Signal-to-noise ratio > 105 dB (A) (–60 dBm)
Dynamic range > 100 dB
Voltage supply
50 Hz …16 kHz (±3 dB)
Plug-in power supply (12 V / 1000 mA, centre positive)
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Technical specications
Dimensions (W × H × D, without
antennas)
Weight 930 g
Ambient conditions Temperature range 0 °C…40 °C
Further information
Frequency band UHF
Diversity Yes
Switchable frequencies Yes
Detachable antennas Yes
Pilot tone Yes
210 mm × 44 mm × 200 mm
Relative humidity 50 %, non-condensing
Carrier frequency, frequency band, number of channels, bandwidth, switching bandwidth and
modulation type correspond to those of the transmitter.
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Technical specications
7.2 Handheld microphone
Carrier frequency UHF band (600 MHz…952 MHz)
Frequency band the t.bone freeU Twin HT 823 (item no. 432864): 823 MHz…832 MHz
the t.bone freeU Twin HT 863 (item no. 432866): 863 MHz…865 MHz
Bandwidth the t.bone freeU Twin HT 823 (item no. 432864): 9 MHz
the t.bone freeU Twin HT 863 (item no. 432866): 2 MHz
Number of channels the t.bone freeU Twin HT 823 (item no. 432864): 100 (10 pre-programmed frequency
groups, each with 10 channels available)
the t.bone freeU Twin HT 863 (item no. 432866): 16 (4 pre-programmed frequency
groups, each with 4 channels available)
Modulation type Frequency modulation (FM)
Maximum transmission power 10 mW
Spurious response rejection ratio > 55 dBc
Peak deviation ± 48 kHz
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Technical specications
Voltage supply 2 × AA cells (LR06, 1.5 V) or corresponding rechargeable batteries
Operating time > 10 h (with alkaline cells)
Dimensions (L × D) 265 mm × 65 mm
Weight (without batteries) 370 g
Ambient conditions Temperature range 0 °C…40 °C
Relative humidity 50 %, non-condensing
Further information
Capsule type Dynamic
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Technical specications
7.3 Bodypack transmitter
Carrier frequency UHF band (600 MHz…952 MHz)
Frequency band the t.bone freeU Twin PT 823 (item no. 432869): 823 MHz…832 MHz
the t.bone freeU Twin PT 863 (item no. 432870): 863 MHz…865 MHz
Bandwidth the t.bone freeU Twin PT 823 (item no. 432869): 9 MHz
the t.bone freeU Twin PT 863 (item no. 432870): 2 MHz
Number of channels the t.bone freeU Twin PT 823 (item no. 432869): 100 (10 pre-programmed frequency
groups, each with 10 channels available)
the t.bone freeU Twin PT 863 (item no. 432870): 16 (4 pre-programmed frequency
groups, each with 4 channels available)
Modulation type Frequency modulation (FM)
Maximum transmission power 10 mW
Peak deviation ± 48 kHz
Voltage supply 2 × AA cells (LR06, 1.5 V) or corresponding rechargeable batteries
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Operating time > 10 h (with alkaline cells)
Technical specications
Dimensions (W × H × D, without
antennas)
Weight (without batteries) 90 g
Ambient conditions Temperature range 0 °C…40 °C
Further information
Max. number of radio links the t.bone freeU Twin PT 823 (item no. 432869): 3
63 mm × 110 mm × 21 mm
Relative humidity 50 %, non-condensing
the t.bone freeU Twin PT 863 (item no. 432870): 1
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Plug and connection assignment
8 Plug and connection assignment
Introduction
Balanced and unbalanced trans‐
mission
42
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°.
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1/4" TS phone plug (mono,
unbalanced)
1/4" TRS phone plug (mono, bal‐
anced)
Plug and connection assignment
Since the interference aects 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.
1 Signal
2 Ground, shielding
1 Signal (in phase, +)
2 Signal (out of phase, –)
3 Ground
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Plug and connection assignment
XLR plug (balanced)
Mini XLR
1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)
4 Shielding on plug housing (option)
1 Ground
2 Positive signal (+)
3 Negative signal (–)
44
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9 Troubleshooting
Troubleshooting
In the following we list a few common problems that may occur during operation. We give you
some suggestions for easy troubleshooting:
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Troubleshooting
Symptom Remedy
No sound 1. Check the power supply of transmitter and receiver.
2. Make sure that transmitter and receiver are operating in the same frequency
range. The frequency range can be found on the devices.
3. Are transmitter and receiver set to the same channel?
4. Test the connection between the receiver and the connected audio device
(amplier, mixer). Is the connected audio device turned on and does the signal
level at the output of the receiver match the input requirements of the audio
device?
5. See if the audio transmission works when you move the transmitter closer to
the receiver.
6. Make sure that no metal objects near the transmitter or receiver obstruct the
transmission.
Transmission is interrupted. 1. Modify the orientation of the antennas.
2. If you use more than one wireless system at the same time, check the used
frequencies and channels.
46
3. Interference can also be caused by other radio or in-ear systems.
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Troubleshooting
If the procedures recommended above do not succeed, please contact our Service Center. You
can nd the contact information at www.thomann.de.
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Protecting the environment
10 Protecting the environment
Disposal of the packaging mate‐
rial
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 these materials with your normal household waste, but make sure that
they are fed to a recovery. Please follow the notes and markings on the packaging.
Disposal of batteries
Batteries must not be disposed of as domestic waste or thrown into re. Dispose of the bat‐
teries according to national or local regulations regarding hazardous waste. To protect the
environment, dispose of empty batteries at your retail store or at appropriate collection sites.
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Disposal of your old device
Protecting the environment
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 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.
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Notes
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Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de
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