DAPAudio Silent Disco User manual

Silent Disco Headphones
Highlite International B.V. –Vestastraat 2 –6468 EX –Kerkrade –the Netherlands
Product code: D1821
USER MANUAL
ENGLISH
V1

1
Silent Disco Headphones
Product code: D1821
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 [e-mail].
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.

2
Silent Disco Headphones
Product code: D1821
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
Product Specifications ......................................................................................................................................8
Compatibility.......................................................................................................................................................9
Optional Accessories.........................................................................................................................................9
Dimensions...........................................................................................................................................................9
4. Setup and Operation ........................................................................................................................................10
Charging the Battery.......................................................................................................................................10
Setup Example ..................................................................................................................................................11
Switching On/Off..............................................................................................................................................11
Channel Selection............................................................................................................................................11
Operation ..........................................................................................................................................................12
Folding the Ear Cups........................................................................................................................................12
5. Troubleshooting .................................................................................................................................................13
6. Maintenance .....................................................................................................................................................13
Preventive Maintenance................................................................................................................................13
Basic Cleaning Instructions ...................................................................................................................13
Corrective Maintenance................................................................................................................................14
7. Transportation and Storage..............................................................................................................................14
Instructions for Transportation ........................................................................................................................14
Storage...............................................................................................................................................................14
8. Disposal ..............................................................................................................................................................14
9. Approval.............................................................................................................................................................14

3
Silent Disco Headphones
Product code: D1821
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 Headphones
●USB-A to DC cable (3.0 x 1,1 mm), 1,5 m
●User manual
Fig. 01
Intended Use
This device is intended for use as circumaural headphones. It is suitable only for indoor use.
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

4
Silent Disco Headphones
Product code: D1821
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.
High sound pressure
This device is not a toy
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 inside of the
headband.
The information label contains the following symbols:
This device shall not be treated as household waste.

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Silent Disco Headphones
Product code: D1821
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
Attention
This device is not a toy
This device may be used by children under the supervision of an adult.
DANGER
Risk of explosion caused by incorrect handling
This device contains a built-in rechargeable lithium-ion polymer battery. The battery is not replaceable.
The battery may explode or cause burns if it is crushed, disassembled or exposed to fire or high
temperatures.
●Do not open the device and do not attempt to remove the built-in battery.
●Do not disassemble the battery.
●Do not crush or puncture the battery.
●Do not short-circuit the battery.
●Do not expose the battery to water or other liquids.
●Keep the battery away from fire, heat, and direct sunlight.
CAUTION
Hearing damage risk
Exposure to high sound levels for a prolonged period may result in hearing damage or loss.
Do not listen at high volume levels for long periods.
Attention
General safety
●Do not shake the device. Avoid brute force when using 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.
●If the device fails to work correctly, discontinue the use immediately.

6
Silent Disco Headphones
Product code: D1821
Attention
This device shall be used only for the purposes it is designed for.
This device is designed to be used as circumaural headphones. Any incorrect use may lead to hazardous
situations and result in injuries and material damage.
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.

7
Silent Disco Headphones
Product code: D1821
3. Description of the Device
The DAP Silent Disco Headphones are headphones intended for use in a silent disco setup in combination
with the DAP Silent Disco Transmitter (D1820). With 3 selectable channels, the headphones can be used
in multiple applications, like a multi-DJ setup, multiple simultaneous lectures, (tour) guide applications,
etc. The headphones’ shells have RGB LEDs that show the selected channel by color. The ear cups can
be folded before stowing. The device is equipped with a rechargeable li-ion polymer battery, which is
not replaceable.
Front View
2 x ear cups
Volume control
Channel LED indicators
Battery LED indicator
DC input connector
Power switch (OFF/ON)
Channel selector
Fig. 02

8
Silent Disco Headphones
Product code: D1821
Product Specifications
Model:
Silent Disco Headphones
Electrical:
Input voltage:
5 V DC
Radio specifications:
System:
UHF/RF
Modulation:
FM
Frequency range:
863–865 MHz
Frequency response:
30–20000 Hz
Channels:
3
Audio specifications:
Mode:
Stereo
THD level:
< 1 %
Signal-to-noise ratio:
> 75 dB
Battery:
Type:
Lithium-ion polymer battery
Capacity:
500 mA∙h
Voltage:
3,7 V
Watt-hour rating:
1,85 W∙h
Runtime:
8 h (at full output)
Charge time:
2,5 h
Battery lifetime:
400 discharge cycles (battery runtime drops at 70 %)
Physical:
Dimensions:
150 x 70 x 200 mm (L x W x H) (not folded)
Weight:
0,22 kg
Connections:
Power connections:
DC input connector
Construction:
Color:
Black, gray
IP rating:
IP20
Thermal:
Charging temperature range:
10–45 °C
Operating temperature range:
0–40 °C
Storage temperature range:
5–20 °C

9
Silent Disco Headphones
Product code: D1821
Compatibility
Attention
Product compatibility
The Silent Disco Headphones are designed to be operated only with the Silent Disco Transmitter. The
Silent Disco Transmitter is not supplied with the Silent Disco Headphones.
You need to purchase the Silent Disco Transmitter separately. Contact your Highlite International dealer
for more information.
Product code: D1820 (Silent Disco Transmitter)
Optional Accessories
You can additionally purchase the following accessories:
●product code: D1822 (Keypad for LED Control) –a keypad to control the color of the LEDs on the
Silent Disco Headphones;
●product code: D1823 (Charger for Silent Disco Headphones, for 20 pcs D1821) –a USB adapter for
charging of up to 20 devices;
●product code: 50040 (USB Adaptor / Charger 1000 mA) –a USB adapter for 1 device.
Contact your Highlite International dealer for more information.
Dimensions
Fig. 03

10
Silent Disco Headphones
Product code: D1821
4. Setup and Operation
Charging the Battery
DANGER
Risk of explosion caused by incorrect handling
This device contains a built-in rechargeable lithium-ion polymer battery. The battery is not replaceable.
The battery may explode or cause burns if it is crushed, disassembled or exposed to fire or high
temperatures.
●Do not open the device and do not attempt to remove the built-in battery.
●Do not crush or puncture the battery.
Attention
Do not wear the headphones during charging
This device is delivered with a USB cable, that is used to charge the battery.
To charge the battery follow the steps bellow:
Connect the USB-A connector of the USB cable to a USB power adapter or to a power sourcing
equipment (a computer, or a similar device).
Connect the DC connector of the USB cable to the DC input connector (05) of the device.
Connect the USB power adapter to the socket-outlet or switch on the power sourcing equipment.
During charging the battery LED indicator (04) lights up in red. When charging is completed, the battery
LED indicator (04) lights up in green.
You can also charge the battery with the Charger for Silent Disco Headphones (product code: D1823).
The charger is not supplied with the device. You can purchase it additionally. Contact your Highlite
International dealer for more information.
With the Charger for Silent Disco Headphones you can charge up to 20 Silent Disco Headphones at the
same time.
Notes:
●Charge the battery before using the device for the first time.
●Do not deep discharge the battery as this will shorten the battery’s lifetime. Recharge the battery as
early as possible. Do not let the device switched on until the battery is depleted.
●Make sure that the battery is fully charged before storing the device.
●Charge the device at an ambient temperature between 0 °C and 35 °C.
Refer to 3.2. Product Specifications on page 8 for the charge time of the battery.

11
Silent Disco Headphones
Product code: D1821
Setup Example
This is a typical setup example with a number of Silent Disco Headphones, a Silent Disco Transmitter, 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. 04
Switching On/Off
The device has a power switch (06):
●Set the power switch (06) in ON position to switch on the device. The channel LED indicators (03) light
up in the specific color selected for the channel. See 4.4. Channel Selection on page 11 for more
information.
●Set the power switch (06) in OFF position to switch off the device.
Channel Selection
The device can operate on 3 channels. You can select a channel with the channel selector (07).
When the respective channel is selected, the channel LED indicators (03) light up as follows:
●Channel 1 –blue
●Channel 2 –red
●Channel 3 –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.

12
Silent Disco Headphones
Product code: D1821
Operation
CAUTION
Hearing damage risk
Exposure to high sound levels for a prolonged period may lead to hearing damage or loss.
Do not listen at high volume levels for long periods.
To use the device:
Make sure that the device is fully charged before use. See 4.1. Charging the Battery on page 10 for
more information.
Switch on the device. See 4.3. Switching On/Off on page 11 for more information.
Select one of the 3 channels. See 4.4. Channel Selection on page 11 for more information.
Adjust the volume with the volume control (02).
Switch off the device when the device is not in use.
Note:
If there is no audio received by the headphones from the transmitter, the headphones will mute after a
short period.
Folding the Ear Cups
The Silent Disco Headphones have foldable ear cups. You can fold the device before stowing.
Push the two ear cups (01) inwards to fold them, as shown in Fig. 05.
Fig. 05

13
Silent Disco Headphones
Product code: D1821
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
The battery is depleted
●Recharge the battery. See 4.1. Charging the
Battery on page 10
The battery
does not
charge
The USB cable is not correctly
connected
●Make sure that you use the USB to DC cable
supplied with the device
●Make sure that the USB to DC cable is firmly
connected
The power sourcing equipment
is not switched on
●Switch on the power sourcing equipment
(computer, or similar)
The USB port on the power
sourcing equipment is damaged
●Try using another power sourcing equipment
The USB power adapter is not
correctly connected
●Make sure that the USB power adapter is
connected to the power supply
No sound
No power to the device
●Make sure that the device is switched on and the
battery is charged
The transmitter is switched off or
not functioning correctly
●Make sure that the transmitter is switched on
Channel selection
●Make sure that the transmitter is transmitting an
audio signal on the channel selected on the
device
●Make sure that the device and the transmitter
are on the same channel
The volume is too low
●Turn up the volume
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 transmitter is too
big
●Shorten the distance between the transmitter
and the device. See the user manual of the
transmitter for more information
●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
Basic Cleaning Instructions
Clean the device with a soft, lint-free cloth.
Attention
●Do not immerse the device in liquid.
●Do not use alcohol or solvents.

14
Silent Disco Headphones
Product code: D1821
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. Transportation and Storage
Instructions for Transportation
This device contains a rechargeable (secondary) lithium-ion polymer battery. Lithium-ion polymer
batteries contained in equipment fall under the category of dangerous goods for transportation.
Make sure that you are in compliance with all applicable transportation regulations when you transport
this device. See 3.2. Product Specifications on page 8 for the specifications of the battery.
Use the original packaging to transport the device or other suitable packaging that complies with the
regulations for transportation of secondary lithium-ion batteries.
Storage
This device contains a rechargeable (secondary) lithium-ion polymer battery. The battery is not
replaceable. The battery may explode or cause burns if it is crushed, disassembled or exposed to fire or
high temperatures.
●Store the device in a dry, cool place, at temperatures between 5 °C and 20 °C. Lithium-ion polymer
batteries self-discharge during storage. Temperatures above 20 °C speed up the self-discharging
process.
●Do not store the device with depleted battery. Make sure that the battery is fully charged before
storing the device. See 4.1. Charging the Battery on page 10.
●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.
You can fold the device before stowing. See 4.6. Folding the Ear Cups on page 12 for more information.
8. Disposal
This device contains a lithium-ion polymer battery. Do not dispose of with the household waste.
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 Headphones, product
code D1821, 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