Panphonics ADX-21-D User manual

ADX-21-D Audio Amplifier
Manual
30.8.2023

Manual
30.8.2023
2
v.1.2/08-23
Revision 1.2
Table of contents
1. Introduction...........................................................................................................................4
1.1. Compliance to standards.................................................................................................4
1.2. Contact information .........................................................................................................4
2. Safety precautions................................................................................................................5
2.1. Safety-related signs and symbols....................................................................................5
2.2. Safety instructions in English...........................................................................................6
3. Overview of ADX-21-D ..........................................................................................................8
4. Quick start instructions........................................................................................................9
5. Operating modes................................................................................................................12
5.1. Normal mode ................................................................................................................12
5.2. Setup mode...................................................................................................................12
5.2.1. Power-up behavior ............................................................................................12
5.2.2. EQ-filter.............................................................................................................12
6. Software ..............................................................................................................................13
7. Dante & AES67....................................................................................................................14
7.1. Basic setup for Dante....................................................................................................14
8. Troubleshooting..................................................................................................................15
9. Specifications .....................................................................................................................16
9.1. Label.............................................................................................................................17
10. Declaration of conformity ................................................................................................18
11. Terms of warranty .............................................................................................................19
12. Safety instructions in other languages...........................................................................21
12.1. Czech: Bezpečnostní pokyny ......................................................................................21
12.2. Danish: Sikkerhedsanvisninger ...................................................................................22
12.3. Dutch: Veiligheidsinstructies........................................................................................24
12.4. Estonian: Ohutusjuhend..............................................................................................25
12.5. Finnish: Turvallisuusohjeet ..........................................................................................27
12.6. French: Instructions de sécurité ..................................................................................28
12.7. German: Sicherheitsanweisungen...............................................................................30
12.8. Hungarian: Biztonsági utasítások ................................................................................31
12.9. Italian: Istruzioni di sicurezza.......................................................................................33
12.10. Japanese: 安全に関する注意事項 .............................................................................34
12.11. Norwegian: Sikkerhetsinformasjon.............................................................................36
12.12. Polish: Informacje dotyczące bezpieczeństwa...........................................................37

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
3
12.13. Portuguese: Instruções de segurança .......................................................................39
12.14. Romanian: Instrucțiuni de securitate..........................................................................40
12.15. Russian: Инструкции по технике безопасности ......................................................42
12.16. Spanish: Instrucciones de seguridad.........................................................................43
12.17. Swedish: Säkerhetsinformation .................................................................................45

Manual
30.8.2023
4
v.1.2/08-23
Revision 1.2
1. Introduction
This manual uses these conventions:
•Bold identifies the names of the buttons on the device.
•Italics identifies references to chapters in this manual.
1.1. Compliance to standards
Directives and regulations involved:
2014/35/EU (LVD), 2014/30/EU (EMC), 2012/19/EU (WEEE), 2011/65/EU (RoHS)
2012/19/EU (WEEE):
Panphonics Oy is a member of the ICT Producer Co-operative -TY as of January 24th 2007.
Panphonics Oy has been registered in the producer co-operative’s membership register under
the number 2306. Company’s membership information has been forwarded to the Finnish
Authorities. ICT Producer Co-operative-TY has been registered as a WEEE compliance scheme
in the Pirkanmaa Centre for Economic Development, Transport and the Environment Producer
register under the number PIRELY/555/07.00/2010.
2011/65/EU (RoHS):
Parts are defined and manufactured to meet RoHS-compliance.
Product Customs Codes: cn-code 85184080
1.2. Contact information
Mailing address for correspondence:
Panphonics Oy
Nuutisarankatu 15
33900 Tampere
Finland
Administration:
[e-mail]
[phone]
Homepage www.panphonics.com
Sales & Product Info:
[e-mail]
[phone]
Logistics:
Panphonics Oy
Nuutisarankatu 15, nosto-ovi 27
33900 TAMPERE
Finland
tel. [phone]
© Panphonics Oy, ADX-21-D Manual v.1.2/08-23. Panphonics reserves the right to
change this manual or the related products without any prior notice.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
5
2. Safety precautions
Read the safety precautions in this chapter before you use the amplifier.
2.1. Safety-related signs and symbols
These are the safety-related signs and symbols in this manual.
DANGER
This is a danger. Dangers are used when there is a risk of death.
WARNING
This is a warning. Warnings are used when there is a risk of personal injury.
CAUTION
This is a caution. Cautions are used when there is a risk of material damage.
NOTE
This is a note. Notes are used to provide useful and important information to
the user.
Symbol
Meaning
General warning sign
Electrical shock hazard

Manual
30.8.2023
6
v.1.2/08-23
Revision 1.2
2.2. Safety instructions in English
NOTE
Always keep this manual available.
Obey the instructions in this manual.
Obey all warnings.
DANGER
During unpacking, look for damage to the packaging and the amplifier. If you
find damage, do not use the amplifier and contact your vendor.
DANGER
Do not use the amplifier if there is any physical damage to the amplifier.
DANGER
The amplifier carries lethal voltages. Only qualified personnel are permitted to
do servicing on the amplifier. There are no user-serviceable parts in the
amplifier.
DANGER
Always connect the power source last to the amplifier after the other
necessary connections.
DANGER
Always disconnect the power source from the amplifier when you change the
connections of the amplifier.
DANGER
Only use the amplifier with Panphonics speakers.
DANGER
Only use the amplifier with Panphonics-qualified cables for speaker
connection.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
7
WARNING
Do not expose the amplifier to a high level of dust. The amplifier is certified as
a Pollution degree 2 device in accordance with EN/IEC 62368-1.
WARNING
Do not expose the amplifier to a high level of vibrations.
CAUTION
Only use the provided power adapter.
CAUTION
Do not put the amplifier near a heat source.
CAUTION
Only use the amplifier on a flat, stable surface or safely install to a ventilated
rack.
CAUTION
Only use the amplifier indoors.
CAUTION
Do not use the amplifier in a humid environment or expose it to moisture.
CAUTION
Only clean the amplifier with a dry cloth.
For safety instructions in Czech, Danish, Dutch, Estonian, Finnish, French, German, Hungarian,
Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish, and Swedish,
see Chapter 12 Safety instructions in other languages, page 21.

Manual
30.8.2023
8
v.1.2/08-23
Revision 1.2
3. Overview of ADX-21-D
ADX-21-D is a Dante™ enabled audio amplifier for Panphonics electrostatic panel speakers
with remote controlled features. ADX-21-D is designed to connect Panphonics Passive Sound
Shower and Compact speakers to networked audio systems as well as professional analog
installations.
ADX-21-D features:
•user-selectable power-up behavior,
•two preset EQ- filters,
•Dante interface for networked digital audio with AES67 support,
•device control through network with dedicated software or manually from the interface
panel,
•an option to use Dante and analog inputs simultaneously with the device control
software,
•PoE (PD 25.5W) and external PSU, and
•an isolated input for balanced analog audio signals.
One ADX-21-D unit can operate up to:
•3 units of 60X60 Panphonics speakers,
•9 units of 60X20 Panphonics speakers,
•4 units of 120X20 Panphonics speakers,
•or any combination of the above, as long as the total surface area is not more than 3
units of 60X60 Panphonics speakers.
The user can select the state of the amplifier after start-up or a power failure with the selectable
power-up feature. For the three different modes of power-up for the amplifier and how to select
them, see Chapter 5.2.1 Power-up behavior, page 12.
The amplifier also has a user-selectable EQ-filter. The EQ-filter features presets for Presence
and Warm sound. EQ-filters make it easier to adapt Panphonics speakers to different usage
situations:
•The Presence setting is a flat amplifier output with clear and crisp rising panel response.
For example, it can be used in a noisy environment where the sound from the speaker
needs to be heard clearly over long distance.
•The Warm setting is an equalized amplifier output with a warmer sound to compensate
for the rising panel response. For example, it can be used to create a private zone for
more enjoyable listening experience.
For instructions on how to select the EQ-filter, see Chapter 5.2.2 EQ-filter, page 12.
As a network audio amplifier with Dante and AES67 support, ADX-21-D makes it easy to build
and design audio systems ranging from single device to hundreds of different audio devices.
Adding units to the system is simple and can be done with minimum cable runs and
interferences.
The basic features of the ADX-21-D can be controlled with a dedicated software through a
network. It can be powered with PoE for single cord setups or with an external power supply if
PoE is not available.
Analog input serves installations where networked audio is not used or it can be used locally as
a second audio input in networked installations with the dedicated software.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
9
4. Quick start instructions
Make sure you have all the provided equipment (ADX-31-U Amplifier, Power Supply,
Power cord).
1. Connect a Panphonics speaker model with a speakON™ connector to the amplifier
speaker output (15).
2. Connect a media source or a POE supply to a suitable amplifier input:
•Dante input (13) or
•XLR input (14).
If POE is used as a power source, skip to step 6.
3. Connect the power cord to the power supply.
4. Connect the power supply to the amplifier (12).
DANGER
Always connect all necessary cables to the amplifier before you connect the
power source to a power outlet.
5. Connect the power cord to a power outlet.
6. Press the PWR (1) button to turn on the amplifier.
The power indicator (2) light comes on.
7. Choose the applicable input channel with the input channel dial (9) with the indicator
lights:
•XLR channel indicator (10) or
•Dante channel indicator (11).
8. Make sure the media source is at an applicable level to prevent distortion or excess
noise to the amplifier input.
9. Adjust the amplifier output volume to the correct level with the VOL  (6) and VOL  (7)
buttons.
For instructions on how to install the Panphonics Device Control software, see Chapter 6
Software, page 13.

Manual
30.8.2023
10
v.1.2/08-23
Revision 1.2
For instructions on how to set up Dante or AES67, see Chapter 7 Dante & AES67, page 14.
Front panel:
(1) PWR
Power up / down the amplifier in normal mode.
Enter setup mode by pushing for 5 seconds during power-up.
Exit when in setup mode.
(2) Power indicator
Lit when the power is on.
(3) Clip indicator
Lit if the amplifier output is overdriven.
If the clip indicator is lit, reduce amplifier volume and make sure the
input volume is not excessive.
Excessive clipping could damage a connected speaker.
(4) Mute indicator
Lit when the amplifier is muted.
(5) MUTE
Press to mute or unmute the amplifier output.
(6) VOL ↑
Adjust the output volume by +1dB steps.
Adjust parameters in the setup mode.
(7) VOL ↓
Adjust the output volume by -1dB steps.
Adjust parameters in the setup mode.
(8) Display
Displays the output volume in 1 dB steps in the normal mode.
Displays the functions and presets in the setup mode.
(9) Input channel
dial
Switch between Dante and XLR input channels in the normal mode.
Switch between the filter and power-up parameters in the setup mode.
(10) XLR channel
indicator
Lit if the XLR-input is active.
(11) Dante channel
indicator
Lit if the Dante input is active.
Back panel:
(12) 48VDC 1A
Input for the provided 48VDC / 0.75A / 36W, center positive, 5.5 / 2.1
mm power adaptor (Use only the provided power adapter)
(13) Dante/ PoE
(ethernet)
input
Input for digital audio, PoE (PD 25,5W) and network features.
Use CAT5e cables or better.
Make sure that the network can deliver sufficient power.
In case of underpowered network delivery or no PoE, use a suitable
PoE injector or an external power supply.
(14) XLR input
Input for balanced analog audio signal.
(15) Speaker
output
Audio output connection for Panphonics electrostatic speakers.
Connect only Panphonics electrostatic speakers equipped with
speakON connectors.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
11
Turning off the amplifier
To turn off the amplifier, push the PWR (1) button.
DANGER
Always disconnect the power source from the amplifier when you change the
connections of the amplifier.
To fully disconnect the amplifier from mains power:
1. Disconnect the power cord from the power outlet.
2. Disconnect the power supply from the amplifier (12).

Manual
30.8.2023
12
v.1.2/08-23
Revision 1.2
5. Operating modes
5.1. Normal mode
ADX-21-D is in the normal operation mode when you switch it on. You can operate the functions
with the user interface or remotely with the control software. Volume settings and the channel
selection made with the interface is saved in 5 seconds after the change. The status of the mute
button is not saved in the device memory.
5.2. Setup mode
In the setup mode, the presets of the power-up behavior and the EQ-filter can be changed
manually from the user interface.
To enter the setup mode, press the PWR (1) button for 6 seconds.
Switch between the power up behavior and the filter settings with the Input channel dial button.
The display shows “P” for the power-up behavior and “F” for the filter as the first character to
indicate the chosen function.
The second blinking character identifies the chosen preset. Change the presets with the VOL 
and VOL  buttons.
5.2.1. Power-up behavior
Power-up behavior changes how the amplifier behaves when the power is connected.
Presets:
P0
Power off until the power button is pressed
P1
Power on automatically
PL
The last used state before disconnecting the power
Change the presets with the VOL  and VOL  buttons.
Settings are saved at exit.
To exit the setup mode, press the PWR (1) button.
5.2.2. EQ-filter
EQ-filter changes the color of the sound between Presence and Warm.
Presets:
F0
Presence. Flat amplifier output with clear and crisp rising panel response.
FH
Warm. Equalized amplifier output with warmer sound to compensate for the
rising panel response.
Change the presets with the VOL  and VOL  buttons.
Settings are saved at exit.
To exit the setup mode, press the PWR (1) button.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
13
6. Software
Panphonics Device Control is a dedicated software for controlling the ADX-21-D amplifiers over
a network. With the software, it’s possible to adjust the basic functions of the amplifiers
connected to the same network from a computer remotely. The feature of using both audio
inputs simultaneously is only accessed from the Panphonics Device Control software.
The software can be used on both Windows and macOS. To download the software, go to
www.panphonics.com.
It is possible to control one amplifier by plugging it directly to the ethernet port of a computer or
create a multi-device setup with suitable network configuration.
When the ADX-21-D amplifier and a computer with the Panphonics Device Control software
installed are connected to the same network, the Panphonics Device Control software will
search and display all the amplifiers available.
To use the network control feature:
1. Install the Panphonics Device Control software to a computer intended for controlling
the ADX-21-D amplifiers.
2. Connect the computer and the amplifiers to a same network.
3. Open the Panphonics Device Control software on the computer.
4. Choose the network connection type or port for the computer.
5. Wait for the amplifier(s) to show up on the Panphonics Device Control software
window.
For the most reliable setup, select wired ethernet connections and good quality network
switches.
Communication between the control software and the amplifier is handled with UDP protocol.
The amplifier’s port UDP:54272 is open and the amplifier responds to the port from which the
message was received. When the control software starts, it tries to bind a port for its use,
starting with port UDP:54272.
Depending on the requirements of the network used, in some cases, it could be necessary to
open port UDP:54272 for outgoing traffic and a few ports from UDP:54272 to UDP:54276 for
incoming traffic in the networks firewall settings.

Manual
30.8.2023
14
v.1.2/08-23
Revision 1.2
7. Dante & AES67
Dante and AES67 are protocols for network audio. Network audio makes it simple to route
hundreds of audio streams in digital format in a network through suitable ethernet cables and
switches. Network audio is beneficial to implement from small to large installations. Network
audio simplifies the setup and makes it extremely easy to control, change, and scale up an
audio system. As an added bonus, especially in large setups, it reduces cost by minimizing the
cabling needs. Unlike an analog setup, a digital audio network does not suffer from
interferences.
Information about Dante and available software can be found by visiting the Audinate website
at: https://www.audinate.com
Information about AES67 and its implementation possibilities can be found from several
software and hardware manufacturers.
7.1. Basic setup for Dante
NOTE
There are many settings and functions that might be essential for your needs
in the Dante Controller that are out of scope of this short tutorial. For further
information, consult the Dante Controller user guide.
You can do audio routing in the network and manage the amplifiers network settings with the
Dante Controller software.
1. Download the software from the Audinate website.
Dante Controller software automatically discovers all Dante compatible devices that are
connected to the network.
2. Route devices in the Dante Controller matrix.
The horizontal axis shows the transmitting devices and their channels. The vertical axis
shows the receivers and their channels.
3. Show and hide channels with the plus and minus signs on the matrix.
4. Do the subscription between the devices on the matrix by marking the intersection points
between the transmitting and the receiving channels.
Successful subscription is indicated with a green check mark.
5. To bring a device to a new system, unsubscribe the device from the Device view window
on the Dante Controller software.
6. Access the device settings in the Device view window by double clicking the device
names.
7. In the device settings, you can give the devices and the channels custom names and
configure the IP-settings.
All the routing and settings will be saved on the devices.
The names, routing, and the settings are recalled after a power failure or if a device is
taken out of and reinstalled to the system.

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
15
8. Troubleshooting
If there is no sound:
•Make sure that the power supply is connected to the amplifier (12) and the power is
turned on (2).
•Make sure that the speaker is correctly connected to the speaker output (15).
•Make sure that all the cables have been connected correctly:
oDante input (13) or
oXLR input (14).
•Make sure that you have the right audio input channel selected:
oDante channel indicator (11) or
oXLR channel indicator (10).
•Make sure that the amplifiers volume level is not at the minimum level.
•Make sure that the media player is turned on and it is functioning properly.
oIf the media player has its own volume control, make sure the volume level is
not at the minimum level.

Manual
30.8.2023
16
v.1.2/08-23
Revision 1.2
9. Specifications
Electrical properties
PSU
48 VDC / 1 A / 40 W
DC power connector pin 2.1 mm / 5.5 mm, center positive
XLR input impedance
10 kohm transformer isolated
XLR input voltage
XLR +6 dBu
Max driving load
135 nF
Max output voltage
150 VRMS
S/N ratio
90 dB
THD
0.03%
PoE
Minimum 802.3 af
Preferred 802.3 at
Audio properties
Output frequency response range
100 Hz–17 kHz -3 dB
Operating conditions
Operating temperature
0°C–50°C non-condensing
Dimensions
Dimensions (L x W x D)
160 x 125 x 31 mm
Weight
0.825 kg

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
17
9.1. Label

Manual 30.8.2023
18 v.1.2/08-23 Revisio 1.2
10. Declaration of conformity

30.8.2023
Manual
Revision 1.2
v.1.2/08-23
19
11. Terms of warranty
Panphonics Oy warrants to the original purchaser that this Panphonics Oy’s product (the
“Product”) will be free from defects in materials, design or workmanship, on the following terms
and conditions: Panphonics Audio Elements have been tested at the place of manufacture in
accordance with the quality control of Panphonics Oy. Each notice of defects in the Product will
be compared to the quality control record of the said Product. This Limited Warranty does not
include deviations in audio performance characteristics of the Product if the performance
characteristics entered into the quality control record have been correct and the purchaser
cannot provide positive proof to the contrary, for example, inadequate transportation
procedures.
1) The period of warranty will be twelve (12) months from the date the original purchaser took
possession of the Product, or should have taken possession of the Product if the receipt of
the Product was delayed due to a cause attributable to the purchaser. In case the original
purchaser sells or otherwise assigns the Product to a new owner/user, the period of
warranty will continue unaltered until the end of the original period of warranty.
2) This Limited Warranty is valid and enforceable only in the following states: European
Community, Norway, Iceland and Switzerland.
3) During the period of warranty Panphonics Oy or its authorized maintenance service will
either repair the defective Product or replace it with a new Product, at Panphonics Oy’s
option. Panphonics Oy will return the repaired Product or deliver a new Product to the
purchaser in working order. All replaced parts and equipment will become the property of
Panphonics Oy.
4) This Limited Warranty does include mechanical defects of the Product and significant
deviations between technical data and performance characteristics of the Product.
5) The repaired or replaced Product will not be given extended or additional period of warranty.
6) This Limited Warranty does not include defects caused by normal tear and wear. In addition,
this Limited Warranty will not be valid if:
a) The defect was due to
i) The use of the Product either contrary to instructions or otherwise negligently;
ii) The Product being exposed to moisture, steam, extreme temperature or
environment, or rapid changes in such, or corrosion or oxidation with corrosive
materials, liquids or gasses or other way highly corrosive environment;
iii) The Product being altered, connected to another product, opened or repaired without
authorization or the Product being repaired with spare parts not approved by
Panphonics Oy;
iv) The Product being misused or installed incorrectly; or
v) The Product having been in on an accident or been exposed to the elements or
spilled over with food or liquid, or been affected by chemical substances or other
events beyond the scope of influence of Panphonics Oy, including but without
limitation to labour dispute and every other event Panphonics Oy cannot reasonably
be expected to overcome, for example fire or other natural catastrophe, war,
rebellion, seizure, monetary exchange control, mandatory legislation, orders of
authorities, refusal of export license, scarcity of transportation, general scarcity,
restrictions in the use of power, and defects and delays of subcontractor’s delivery

Manual
30.8.2023
20
v.1.2/08-23
Revision 1.2
caused by the above-mentioned causes unless the damage has been direct
consequence of a defect in material or design or workmanship;
b) The purchaser has not informed Panphonics Oy or its authorized maintenance service
about the defect within thirty (30) days from the occurrence of the defect during the
period of warranty;
c) The Product has not been returned to Panphonics Oy or its authorized maintenance
service within thirty (30) days from the occurrence of the defect during the period of
warranty;
d) The serial number of the Product has been transferred, removed or damaged, or any
number has been altered or is impossible to read;
e) The defect was caused by the malfunction of an electronic appliance not provided by
Panphonics Oy;
f) The defect was caused as a consequence of the Product being used with an accessory,
which was not manufactured, approved or provided by Panphonics Oy, or the Product
was connected to such accessory, or the Product was used for other purposes than
instructed, or the Product has been connected to such electronic system, which does not
operate customarily compared to the normal use of the Product;
g) The defect was caused as a consequence of an acoustic or electric overloading of the
Audio Element.
7) In order to be able to invoke this Limited Warranty, the purchaser must provide either
a) Readable and unaltered original sales receipt/warranty card, which clearly sets out the
name and address of the seller, the date and place of the purchase, the type of the
Product and serial number, or alternatively
b) Readable and unaltered original sales receipt, which brings out the same information if
produced to the seller/ supplier of the Product.
8) The purchaser’s rights against Panphonics Oy based on defects or defective functions of the
Product are limited to this Limited Warranty. This Limited Warranty will supersede all the
oral, written, statutory (unless mandatory), contractual, and other warranties and liabilities.
In no event will Panphonics Oy be liable for unforeseen, incidental, consequential or indirect
damages or expenses. Should the purchaser be a company or other legal person,
Panphonics Oy will not be liable for direct damages or expenses. Unless it is contrary to
mandatory provisions of law, the purchaser will be finally responsible for product liability.
9) Any amendment or supplement to the terms of this Limited Warranty is binding on
Panphonics Oy only if Panphonics Oy has beforehand accepted in writing to the amendment
or supplement. The defective Product must be shipped to Panphonics Oy on the
purchaser’s expense.