Silent Disco Transmitter
Highlite International B.V. – Vestastraat 2 – 6468 EX – Kerkrade – the Netherlands
Product code: D1820
USER MANUAL
ENGLISH
V1
1
Silent Disco Transmitter
Product code: D1820
Preface
Thank you for purchasing this DAP product.
The purpose of this user manual is to provide instructions for the correct and safe use of this product.
Keep the user manual for future reference as it is an integral part of the product. The user manual shall be
stored at an easily accessible location.
This user manual contains information concerning:
● Safety instructions
● Installation and operation of the device
● Intended and non-intended use of the device
● Maintenance procedures
● Troubleshooting
● Transport, storage and disposal of the device
Non-observance of the instructions in this user manual may result in serious injuries and damage of
property.
©2022 DAP. All rights reserved.
No part of this document may be copied, published or otherwise reproduced without the prior written
consent of Highlite International.
Design and product specifications are subject to change without prior notice.
For the latest version of this document or other language versions, please visit our website
www.highlite.com or contact us at service@highlite.com.
Highlite International and its authorized service providers are not liable for any injury, damage, direct or
indirect loss, consequential or economic loss or any other loss arising from the use of, or inability to use or
reliance on the information contained in this document.
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Silent Disco Transmitter
Product code: D1820
Table of contents
1. Introduction .......................................................................................................................................................... 3
Before Using the Product .................................................................................................................................. 3
Intended Use ....................................................................................................................................................... 3
Text Conventions ................................................................................................................................................ 3
Symbols and Signal Words ................................................................................................................................ 4
Symbols on the Information Label .................................................................................................................. 4
2. Safety .................................................................................................................................................................... 5
Warnings and Safety Instructions .................................................................................................................... 5
Requirements for the User ................................................................................................................................. 6
3. Description of the Device ................................................................................................................................... 7
Front View ............................................................................................................................................................ 7
Back View ............................................................................................................................................................ 7
Product Specifications ...................................................................................................................................... 8
Compatibility ....................................................................................................................................................... 9
Optional Accessories ......................................................................................................................................... 9
Dimensions ........................................................................................................................................................... 9
4. Setup and Operation ........................................................................................................................................ 10
Installation Site Requirements ........................................................................................................................10
Connecting to Power Supply .........................................................................................................................10
Setup Example ..................................................................................................................................................10
Connecting an Audio Device .......................................................................................................................11
Connecting a Keypad ....................................................................................................................................11
Switching On/Off and Output Selection .....................................................................................................11
Channel Selection............................................................................................................................................12
5. Troubleshooting ................................................................................................................................................. 13
6. Maintenance ..................................................................................................................................................... 13
Preventive Maintenance ................................................................................................................................13
Basic Cleaning Instructions ...................................................................................................................13
Corrective Maintenance ................................................................................................................................14
7. Deinstallation, Transportation and Storage .................................................................................................... 14
8. Disposal .............................................................................................................................................................. 14
9. Approval ............................................................................................................................................................. 14
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Silent Disco Transmitter
Product code: D1820
1. Introduction
Before Using the Product
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
After unpacking, check the contents of the box. If any parts are missing or damaged, contact your
Highlite International dealer.
Your shipment includes:
● DAP Silent Disco Transmitter
● FM antenna (installed)
● AC power adapter (1,5 m)
● Padded case
● User manual
Fig. 01
Intended Use
This device is intended for professional use as an audio transmitter. It is suitable for indoor use only.
Any other use, not mentioned under intended use, is regarded as non-intended and incorrect use.
Text Conventions
Throughout the user manual the following text conventions are used:
● Buttons: All buttons are in bold lettering, for example “Press the UP/DOWN buttons”
● References: References to chapters and parts of the device are in bold lettering, for example:
“Refer to 2. Safety”, “press the power switch (03)”
● 0–255: Defines a range of values
● Notes: Note: (in bold lettering) is followed by useful information or tips
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Silent Disco Transmitter
Product code: D1820
Symbols and Signal Words
Safety notes and warnings are indicated throughout the user manual by safety signs.
Always follow the instructions provided in this user manual.
DANGER
Indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Indicates an imminently hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
Attention
Indicates important information for the correct operation and use of the
product.
Important
Read and observe the instructions in this document.
Provides important information about the disposal of this product.
Symbols on the Information Label
This product is provided with an information label. The information label is located on the bottom of the
device.
The information label contains the following symbols:
This device is designed for indoor use.
This device shall not be treated as household waste.
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Silent Disco Transmitter
Product code: D1820
2. Safety
Important
Read and follow the instructions in this user manual before installing, operating or
servicing this product.
The manufacturer will not accept liability for any resulting damages caused by the non-observance of
this manual.
Warnings and Safety Instructions
DANGER
Danger for children
For adult use only. The device must be installed beyond the reach of children.
● Do not leave various parts of the packaging (plastic bags, polystyrene foam, nails, etc.) within
children’s reach. Packaging material is a potential source of danger for children.
Attention
Incorrect handling of the AC power adapter may result in hazardous situations.
This device is delivered with an AC power adapter. Incorrect handling of the AC power adapter may
result in hazardous situations.
● Use only the AC power adapter delivered with the device.
● Do not wrap the power cable around the power adapter or any other object. This can damage the
internal wires.
● Do not cover the power adapter with anything when it is plugged into the socket-outlet. This may
cause overheating.
● Do not expose the power adapter to water or other liquids.
Do not use the power adapter:
● If it shows signs of overheating, for example the plastic is damaged
● If the AC input pins show signs of corrosion or overheating
● If the power cable is damaged or shows signs of material fatigue
Attention
Power supply
Before connecting the AC power adapter to the power supply, make sure that the current, voltage and
frequency match the input voltage, current and frequency specified on the information label on the AC
power adapter.
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Silent Disco Transmitter
Product code: D1820
Attention
General safety
● Do not shake the device. Avoid brute force when installing or operating the device.
● If the device is exposed to extreme temperature variations (e.g. after transportation), do not switch it
on immediately. Let the device reach room temperature before switching it on, otherwise it may be
damaged by the formed condensation.
Attention
This device shall be used only for the purposes it is designed for.
This device is intended for professional use as an audio transmitter. It is suitable for indoor use only.
This device does not contain user-serviceable parts. Unauthorized modifications to the device will render
the warranty void. Such modifications may result in injuries and material damage.
Attention
Do not expose the device to conditions that exceed the rated IP class conditions.
This device is IP20 rated. IP (Ingress Protection) 20 class provides protection against solid objects greater
than 12 mm, such as fingers, and no protection against harmful ingress of water.
Requirements for the User
This product may be used by ordinary persons. Maintenance and installation may be carried by ordinary
persons. Service shall be carried out only by instructed or skilled persons. Contact your Highlite
International dealer for more information.
Instructed persons have been instructed and trained by a skilled person, or are supervised by a skilled
person, for specific tasks and work activities associated with the service of this product, so that they can
identify risks and take precautions to avoid them.
Skilled persons have training or experience, which enables them to recognize risks and to avoid hazards
associated with the service of this product.
Ordinary persons are all persons other than instructed persons and skilled persons. Ordinary persons
include not only users of the product but also any other persons that may have access to the device or
who may be in the vicinity of the device.
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Silent Disco Transmitter
Product code: D1820
3. Description of the Device
The DAP Silent Disco Transmitter is a compact stereo audio transmitter for setting up a silent disco. It
supports 3 channels in the 863–865 MHz range. A display on the front shows the selected channel. The
DAP Silent Disco Transmitter is intended for use with the DAP Silent Disco Headphones (D1821).
Front View
01) 7-segment LED display
02) Channel selector
03) 4P4C connector (for keypad)
04) FM antenna
Fig. 02
Back View
05) DC input connector, 12 V DC
06) Power LED indicator
07) RCA connector IN (L)
08) RCA connector IN (R)
09) Power switch (OFF/LOW/HIGH)
Fig. 03
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Silent Disco Transmitter
Product code: D1820
Product Specifications
Model:
Silent Disco Transmitter
Electrical:
Input voltage:
12 V DC
Power consumption:
3,1 W
AC power adapter:
Input voltage:
100–240 V AC, 50/60 Hz
Input current:
1 A
Output voltage:
12 V DC
Output current:
500 mA
Radio specifications:
System:
UHF/RF
Modulation:
FM
Frequency range:
863–865 MHz
Frequency response:
30–20000 Hz
Number of channels:
3
Channel frequencies:
● Channel 1 (863,1 MHz)
● Channel 2 (863,7 MHz)
● Channel 3 (864,9 MHz)
Channel separation:
> 50 dB
Distortion:
< 1 %
Operation distance:
200 m (LOW), 450 m (HIGH)
Physical:
Dimensions:
115 x 130 x 35 mm (L x W x H) (without the antenna)
Weight:
0,3 kg
Operation and control:
Display:
7-segment LED display
Channel selection:
yes
Connections:
Power connections:
DC input connector
Stereo input connections:
2 x RCA
Keypad input connection:
4P4C connector
Construction:
Housing:
Aluminum
Color:
Silver
IP rating:
IP20
Thermal:
Minimum ambient temperature ta:
0 °C
Maximum ambient temperature ta:
40 °C
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Silent Disco Transmitter
Product code: D1820
Compatibility
Attention
Product compatibility
The Silent Disco Transmitter is designed to be operated only with the Silent Disco Headphones. The Silent
Disco Headphones are not supplied with the Silent Disco Transmitter.
You need to purchase the Silent Disco Headphones separately. Contact your Highlite International
dealer for more information.
Product code: D1821 (Silent Disco Headphones)
Optional Accessories
You can additionally purchase a keypad to control the color of the LEDs of the paired headphones.
Contact your Highlite International dealer for more information.
Product code: D1822 (Keypad for LED Control)
Dimensions
Fig. 04
10
Silent Disco Transmitter
Product code: D1820
4. Setup and Operation
Installation Site Requirements
● The device can be used only indoors.
● The device must be placed on a flat surface.
● The maximum ambient temperature t
a
= 40 °C must never be exceeded.
● The relative humidity must not exceed 50 % with an ambient temperature of 40 °C.
Connecting to Power Supply
Attention
Incorrect handling of the AC power adapter may result in hazardous situations
This device is delivered with an AC power adapter. Incorrect handling of the AC power adapter may
result in hazardous situations.
● Connect the device to the socket-outlet with the delivered AC power adapter. Use only the AC
power adapter delivered with the device.
● Make sure that the socket-outlet is easily accessible.
● Disconnect the AC power adapter from the socket-outlet when the device is not in use.
Setup Example
This is a typical setup example with a Silent Disco Transmitter, a number of Silent Disco Headphones, a
Keypad for LED Control, and a DJ mixer.
Make sure that there is a clear line of sight between the transmitter and each person wearing the
headphones.
Fig. 05
11
Silent Disco Transmitter
Product code: D1820
Connecting an Audio Device
Connect an audio device, for example a dj mixer or a media player, to the RCA connectors IN (07) and
(08) of the device with RCA cables.
Connecting a Keypad
The keypad is not supplied with the device. Contact your Highlite International dealer for more
information.
Product code: D1822 (Keypad for LED Control)
Connect the keypad to the 4P4C connector (03) on the device. For more information refer to the user
manual of the keypad.
When the keypad is connected to the device, the decimal point on the 7-segment LED display (01) lights
up.
Channel 3 is selected and the keypad is connected to the device.
Switching On/Off and Output Selection
With the power switch (09) you can switch off and on the device and select the transmitter power
output.
● OFF: Switch off the device
● LOW: Switch on the device and select low output. Use this setting for a transmission
distance of max. 200 m
● HIGH: Switch on the device and select high output. Use this setting for a transmission
distance of max. 450 m
When you switch on the device, the power LED indicator (06) lights up and the 7-segment LED display
(01) shows the following:
After 2 s the 7-segment LED display (01) shows the selected channel. See 4.7. Channel Selection on page
12 for more information.
Notes:
● Switch off the device from the power switch (09) when the device is not in use.
● The mains plug is used as a disconnect device. Disconnect the AC power adapter from the socket-
outlet to disconnect the device from the power supply.
● If the headphones are very close to the device, do not select HIGH output when you switch on the
device.
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Silent Disco Transmitter
Product code: D1820
Channel Selection
The device has 3 channels. You can select a channel with the channel selector (02).
Press the channel selector (02) to select a channel. The 7-segment LED display (01) shows the selected
channel.
Channel 1 is selected.
Channel 2 is selected.
Channel 3 is selected.
When the respective channel is selected, the channel LED indicators on the Silent Disco Headphone light
up as follows:
● Channel 1 (863,1 MHz) – blue
● Channel 2 (863,7 MHz) – red
● Channel 3 (864,9 MHz) – green
You can change the color for each channel or switch off the LEDs with the Keypad for LED Control
(product code: D1822). The keypad is not supplied with the device. You can purchase it additionally.
Contact your Highlite International dealer for more information.
Note:
The device can operate only on one channel. You cannot switch between the channels during
operation. If you want to use all 3 channels at the same time in one setup, you need to use 3 Silent Disco
Transmitters.
Fig. 06
13
Silent Disco Transmitter
Product code: D1820
5. Troubleshooting
This troubleshooting guide contains solutions to problems which can be carried out by an ordinary
person. The device does not contain user-serviceable parts.
Unauthorized modifications to the device will render the warranty void. Such modifications may result in
injuries and material damage.
Refer servicing to instructed or skilled persons. Contact your Highlite International dealer in case the
solution is not described in the table.
Problem
Probable cause(s)
Solution
The device does not
function at all
No power to the device
● Makes sure that power is switched on
and cables are plugged in
No sound
The headphones are switched off
or not functioning correctly
● Make sure that the headphones are
switched on and the battery is
charged
● Change the headphones
Channel selection
● Make sure that the transmitter is
transmitting an audio signal on the
channel selected on the headphones
● Make sure that the transmitter and the
headphones are on the same channel
The volume is too low
● Turn up the volume on the
headphones
● Make sure that the volume of the
connected device is turned up
The connected device is not
playing audio
● Make sure that the connected device
is switched on and operates correctly
Poor sound quality
The distance between the device
and the headphone is too big
● Shorten the distance between the
device and the headphones
● Make sure that there are no
obstructions between the device and
the headphones
The connected device is not
functioning correctly or the audio is
of poor quality
● Try another audio source
6. Maintenance
Preventive Maintenance
Attention
Before use, examine the device visually for any defects.
Basic Cleaning Instructions
To clean the device, follow the steps below:
Disconnect the device from the electrical power supply.
02) Clean the device with a soft, lint-free cloth.
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Silent Disco Transmitter
Product code: D1820
Attention
● Do not immerse the device in liquid.
● Do not use alcohol or solvents.
Corrective Maintenance
The device does not contain user-serviceable parts. Do not open the device and do not modify the
device.
Refer repairs and servicing to instructed or skilled persons. Contact your Highlite International dealer for
more information.
7. Deinstallation, Transportation and Storage
● Disconnect power supply before deinstallation.
● Use the original packaging to transport the device, if possible.
● Clean the device before storing. Follow the cleaning instructions in chapter 6.1.1. Basic Cleaning
Instructions on page 13.
● Store the device in the original packaging, if possible.
8. Disposal
Correct disposal of this product
Waste Electrical and Electronic Equipment
This symbol on the product, its packaging or documents indicates that the product
shall not be treated as household waste. Dispose of this product by handing it to the
respective collection point for recycling of electrical and electronic equipment. This
is to avoid environmental damage or personal injury due to uncontrolled waste
disposal. For more detailed information about recycling of this product contact the
local authorities or the authorized dealer.
9. Approval
Hereby, Highlite International declares that the device Silent Disco Transmitter, product code D1820, is in
compliance with Directive 2014/53/EU (RED – Radio Equipment Directive).
The full text of the EU declaration of conformity is available at the respective product page on the
website of Highlite International (www.highlite.com).
©2022 DAP
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