RCF DPA 162 User manual

USER MANUAL
MANUALE D’USO
DMA 82 / DMA 162
DPA 162
-DMA 82 / DMA 162
TWO-CHANNEL DIGITAL
MATRIX AMPLIFIER
-DPA 162 DIGITAL POWER
AMPLIFER
-DMA 82 / DMA 162
AMPLIFICATORE MATRICE
DIGITALE A DUE CANALI
-DPA 162 AMPLIFICATORE
DIGITALE

ENGLISH
SAFETY AND OPERATING PRECAUTIONS
INTRODUCTION ABOUT THE BUSINESS MUSIC LINE
DMA 82 / DMA 162 DESCRIPTION AND MAIN FEATURES
DPA 162 DESCRIPTION AND MAIN FEATURES
UNPACKING, INSTALLATION AND COOLING
AUDIO BLOCK DIAGRAM
DMA 82 / DMA 162 FRONT PANEL
DMA 82 / DMA 162 REAR PANEL
DMA 82 / DMA 162 OPERATION MODES
DMA 82 / DMA 162 SETTINGS
DPA 162 FRONT PANEL
DPA 162 REAR PANEL
SPECIFICATIONS
CONNECTION EXAMPLE
ITALIANO
AVVERTENZE PER LA SICUREZZA
INTRODUZIONE AI PRODOTTI DELLA LINEA BUSINESS MUSIC
DMA 82 / DMA 162: DESCRIZIONE E CARATTERISTICHE PRINCIPALI
DPA 162: DESCRIZIONE E CARATTERISTICHE PRINCIPALI
DISIMBALLAGGIO, INSTALLAZIONE E RAFFREDDAMENTO
DIAGRAMMA A BLOCCHI DEL SEGNALE AUDIO
DMA 82 / DMA 162: PANNELLO FRONTALE
DMA 82 / DMA 162: PANNELLO POSTERIORE
DMA 82 / DMA 162: MODALITÀ DI FUNZIONAMENTO
DMA 82 / DMA 162: IMPOSTAZIONI
DPA 162: PANNELLO FRONTALE
DPA 162: PANNELLO POSTERIORE
DATI TECNICI
ESEMPIO DI COLLEGAMENTI
4
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TABLE OF CONTENTS
INDICE

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IMPORTANT
WARNING
SAFETY AND OPERATING
PRECAUTIONS
Before connecting and using this product, please read this instruction manual carefully and
keep it on hand for future reference.
The manual is to be considered an integral part of this product and must accompany it
when it changes ownership as a reference for correct installation and use as well as for the
safety precautions.
RCF S.p.A. will not assume any responsibility for the incorrect installation and / or use of
this product.
To prevent the risk of re or electric shock, never expose this product to rain or humidity.
This device is intended for indoor use only.
SAFETY PRECAUTIONS
1. All the precautions, in particular the safety ones, must be read with special attention, as
they provide important information.
2. POWER SUPPLY FROM MAINS
-The mains voltage is sufciently high to involve a risk of electrocution: never install or
connect this product when its power cord is plugged in.
-Before powering up, make sure that all the connections have been made correctly and
the voltage of your mains corresponds to the voltage shown on the rating plate on the
unit, if not, please contact your RCF dealer.
-The metallic parts of the unit are earthed by means of the power cord.
An apparatus with CLASS I construction shall be connected to a mains socket outlet
with a protective earthing connection.
-Protect the power cord from damage. Make sure it is positioned in a way that it
cannot be stepped on or crushed by objects.
-To prevent the risk of electric shock, never open this product: there are no parts inside
that the user needs to access.
-The mains plug is used as the disconnect device and it shall remain readily operable.
3. Make sure that no objects or liquids can get into this product, as this may cause a short
circuit.
This apparatus shall not be exposed to dripping or splashing. No objects lled with liquid
(such as vases) and no naked sources (such as lighted candles) shall be placed on this
apparatus.
4. Never attempt to carry out any operations, modications or repairs that are not expressly
described in this manual.
Contact your authorized service centre or qualied personnel should any of the following
occur:
-The product does not function (or functions in an anomalous way).
-The power cord has been damaged.
-Objects or liquids have got into the product.
-The product has been subject to a heavy impact.
5. If this product is not used for a long period, disconnect its power cord from mains.
6. If this product begins emitting any strange smell or smoke, switch it off immediately
and disconnect its power cord.

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7. Do not connect this product to any equipment or accessories not foreseen.
To prevent the risk of falling equipment, do not stack multiple units of this product unless
this possibility is specied in this user manual.
8. RCF S.p.A. strongly recommends this product is only installed by professional qualied
installers (or specialised rms) who can ensure correct installation and certify it according
to the regulations in force.
The entire audio system must comply with the current standards and regulations regarding
electrical systems.
9. Supports and trolleys
The equipment should be only used on trolleys or supports, where necessary, that are
recommended by the manufacturer. The equipment / support / trolley assembly must be
moved with extreme caution.
Sudden stops, excessive pushing force and uneven oors may cause the assembly to
overturn.
10. Mechanical and electrical factors need to be considered when installing a professional
audio system (in addition to those which are strictly acoustic, such as sound pressure,
angles of coverage, frequency response, etc.).
11. Hearing loss
Exposure to high sound levels can cause permanent hearing loss. The acoustic pressure
level that leads to hearing loss is different from person to person and depends on the
duration of exposure. To prevent potentially dangerous exposure to high levels of acoustic
pressure, anyone who is exposed to these levels should use adequate protection devices.
When a transducer capable of producing high sound levels is being used, it is therefore
necessary to wear ear plugs or protective earphones.
See the technical specications in speaker user manuals to know their maximum sound
pressure levels.
12. Do not obstruct the ventilation of the unit and place this product far from any heat
sources and always ensure adequate air circulation around.
13. Do not overload ampliers. Check that amplier outputs are not shorted.
14. Never force the control elements (keys, knobs, etc. ).
15. Do not use solvents, alcohol, benzene or other volatile substances for cleaning the
external parts of this product.
Use a dry cloth.
NOTES ABOUT AUDIO SIGNAL CABLES
To prevent the occurrence of noise on microphone / line signal cables, use screened cables
only and avoid putting them close to:
-Equipment that produces high-intensity electromagnetic elds.
-Mains cables.
-Loudspeaker lines.

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RCF S.p.A. thanks you for purchasing this product, which has been designed
to guarantee reliability and high performance.
DMA 82 / DMA 162 DESCRIPTION
AND MAIN FEATURES
INTRODUCTION ABOUT
THE BUSINESS MUSIC LINE
DMA 82 and DMA 162 are two-channel class-D matrix ampliers, both equipped with a
powerful DSP platform, allowing managing inputs and outputs in terms of routing and
equalization (a complete set of processing functions is available, including PEQ, FIR lters,
bass enhancement, limiters, compressors and environmental equalization); moreover,
dedicated presets for RCF speakers have been implemented to optimize their acoustic
performance.
The two models only differ in the output power:
-DMA 82 either 2 ch. x 80 W RMS @ 4 Ω or a single 160 W 70 V line
-DMA 162 either 2 ch. x 160 W RMS @ 4 Ω or a single 320 W 70 V line.
Each DMA is suitable for either desktop or rack installation (thanks to its dedicated
optional accessory).
Each unit has 2 stereo LINE audio inputs on RCA connectors, 1 MIC+LINE balanced audio
input on removable screw terminals and a LINE audio output with a switchable low-pass
lter useful for the connection to an active subwoofer.
A dedicated input having RJ 45 connector allows the connection of up to four BM 404
paging microphones (interlocked one another on a single chain).
A RC 401 wall-mount remote control can be linked to each output channel in order to
adjust its respective volume level and select the desired audio input.
DMA can send up to 4 audio channels to satellite DPA units (through a BUS with a single
CAT5 cable), combining a exible and scalable multi-room architecture with an easy
connection and installation.
Its conguration is user friendly and can be carried out through either its front panel
controls (with OLED display) or ‘RDNet’ (when its optional board is installed).
BUSINESS MUSIC line includes DMA 82 / DMA 162 digital matrix ampliers, DPA 162
digital power amplier, BM 404 paging microphone, remote controls and speakers,
offering a complete sound system and maximizing the overall acoustic performance.
DMA / DPA ampliers are extremely compact (1/2 19” rack unit wide and 1 unit high)
that make them ideal for either desktop or rack installation (with optional accessories)
and are suitable for a wide range of system solutions, from retail stores to bars and
restaurants, meeting rooms, education or public facilities and any A/V application.
Their accurate design together with environmental robustness (IP 30 protection grade
and high efciency thermal dissipation) represents a junction point between professional
and consumer markets.
This line includes both ceiling and wall mount speakers, which have professional acoustic
performances and a high valued industrial design, it has different conguration levels,
from the user friendly front control panel to the RCF ‘RDNet’ for large and complex
systems, with a highly scalable architecture.
Control units can send up to four mono / two stereo audio channels to satellite units
through a single CAT5 cable.This allows to increase the installed power and create a
multi-room architecture as well, with a simple connection among devices.

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DPA 162 DESCRIPTION
AND MAIN FEATURES
DPA 162 is a two-channel class-D power amplier.
Output power: either 2 channels x 160 W RMS @ 4 Ω or a single 320 W 70 V line.
Up to 4 DPA 162 can be linked to a single DMA unit in order to increase the system
output power and implement multi-room architectures.
However, each DPA can be used as a stand alone amplier as well.
Each amplier is suitable for either desktop or rack installation (thanks to its dedicated
optional accessory).
DPA 162 can receive processed audio signals from a DMA amplier on a four-channel
audio BUS (either four mono or one stereo and two mono or two stereo, the four signals
are the same sent to the DMA power ampliers), or as alternative, it is possible to select
the local stereo LINE input (by closing the dedicated contact).
A LINE output is also available, with a switchable low-pass lter for the connection to an
active subwoofer.
Its conguration can be carried out though either the dip-switches on its rear panel or
‘RDNet’ (when its optional board is installed).
Check the carton box and its contents and if there is any sign of damage (should
the amplier be damaged, immediately inform your local distributor / dealer and the
forwarder).
It is always advisable to keep the packing materials, even if the amplier has arrived in
good condition. The power cord is included.
DMA / DPA ampliers can be installed into a 19” rack cabinet (an optional accessory is
required for every pair, as each amplier needs half a rack unit).
Ampliers should not be installed in a place with:
-Too high temperature, dust or excessive humidity.
-Exhaust air ventilators.
-Permanent vibrations.
-High-intensity electromagnetic elds (due to transformers, transmitters, etc.).
Make sure there is an adequate ventilation and ampliers sides have enough room.
The temperature inside the rack cabinet should be kept below 35°C (95°F).
For safety reasons, never disconnect the earth (ground) pin of the mains power cord.
Use audio shielded cables to avoid hum and interference.
UNPACKING, INSTALLATION
AND COOLING

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AUDIO BLOCK DIAGRAM
LPF
LPF
EXT
IN 2 OUT / SUB
OUT B
OUT A
IN 1
AUX
BAL IN
BM 404
DMA
BUS
LPF
LPF
LPF
LPF
OUT / SUB
OUT / SUB
OUT B
OUT B
OUT A
OUT A
GAIN A
GAIN A
GAIN B
GAIN B
LOCAL IN
LOCAL IN
AUX
AUX
DPA
BUS
OUT
DPA
BUS
OUT
BUS
IN
BUS
IN

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DMA 82 / DMA 162 FRONT PANEL
1Display (OLED)
When no menu is selected, the current output levels are displayed as bars.
2Rotary encoder and push-button to select.
Turn the encoder either clockwise to increase the MASTER VOLUME level or
counterclockwise to decrease it.
Press it to toggle MUTE ALL / UNMUTE ALL.
In the edit mode (after pressing MENU 3): turn the encoder either clockwise to scroll
the menu downwards or increase the selected parameter value, turn it counterclockwise
to scroll the menu upwards or decrease the selected parameter value.
Press to select (and enter a submenu).
3MENU button: press to enter the edit mode and select the menu home page.
4BACK / ESC button: press to quit the displayed menu.
5CH A / PEAK (two LEDs): CH A is lit when the audio signal is present on the channel
A. PEAK blinks when the signal level of the channel A reaches the clipping point, causing
the limiter intervention; if it is steady lit, its volume level is excessive and needsto be
reduced.
6CH B / PEAK (two LEDs): CH B is lit when the audio signal is present on the channel
B. PEAK blinks when the signal level of the channel B reaches the clipping point, causing
the limiter intervention; if it is steady lit, its volume level is excessive and needsto be
reduced.
7CHANNEL A MUTE (LED): when lit, the channel A output is muted.
8CHANNEL B MUTE (LED): when lit, the channel B output is muted.
9AUX input (3.5 mm stereo TRS jack).
If a jack plug is inserted into this input, the rear panel INPUT 1 is disabled.
10 STAND-BY button with LED: push to toggle the amplier on/stand-by.
The LED is lit white when the amplier is turned on, red when the amplier is in stand-by.
1 2 4 7 8 9
103 5 6

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DMA 82 / DMA 162 REAR PANEL
22 19 18 17 12 14 16
27 26 25 24 23 21 20 11 13 15
PIN BUS AUDIO OUTPUT WIRE COLOUR (T568B)
1 1 – white-orange
2 1 + orange
3 2 – white-green
4 3 – blue
5 3 + white-blue
6 2 + green
7 4 – white-brown
8 4 + brown
11 AUDIO INPUT 1 (left channel): unbalanced line level input with RCA socket.
12 AUDIO INPUT 1 (right channel): unbalanced line level input with RCA socket.
Ifajack plug Is Inserted Into the front panel AUX Input 9, the rear panel audIo INPUT 1 11
, 12 Is momentary dIsabled.
13 AUDIO INPUT 2 (left channel): unbalanced line level input with RCA socket.
14 AUDIO INPUT 2 (right channel): unbalanced line level input with RCA socket.
15 AUDIO OUTPUT (left channel) / SUB OUT: unbalanced line level output with RCA
socket.
It can be set to send either a copy of the output A audio signal (BUS 1; left channel if
stereo) or the same signal ltered by a low-pass lter (80 Hz) useful for connecting an
active subwoofer.
16 AUDIO OUTPUT (right channel) / SUB OUT: unbalanced line level output with RCA
socket.
It can be set to send either a copy of the output B audio signal (BUS 2; right channel if
stereo) or the same signal ltered by a low-pass lter (80 Hz) useful for connecting an
active subwoofer.
17 BUS output (RJ45 socket): it needs to be linked to the BUS input of the rst DPA 162
amplier (if present).

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18 BM: input (RJ45 socket) for BM 404 paging microphones.
Up to four BM 404 paging microphones can be linked in ‘daisy-chain’.
22 MUTE: (removable screw terminal block): remote mute command (a dry closing
contact) active when its contacts are shorted.
23 RMT B: input (removable screw terminal block) for an optional RC 401 remote
control, which allows to select the desired input source and adjust the volume (or mute)
of its OUT B 25 (speaker output). See RMT A 24 for the pin contact list.
It is not usable when the DMA is set to STEREO or BRIDGE mode.
24 RMT A: input (removable screw terminal block) for an optional RC 401 remote
control, which allows to select the desired input source and adjust the volume (or mute)
of its OUT A 25 (speaker output) or both outputs when the DMA is set to STEREO mode
or the single 70 V line when set to BRIDGE mode.
As alternative (when no BM 404 microphones are connected), BM input can also be used
as additional auxiliary input by connecting the rst three pins only.
19 FW UPDATE: USB (type B) port to link a computer (PC) locally.
This port can be used either to control the amplier through the RDNET software or
update its rmware.
20 Blank panel to be removed when installing the optional RDNET board.
21 BALANCED AUDIO INPUT for a removable screw terminal block.
This input has the VOX function: a signal detection that gives automatic priority.
PIN DESCRIPTION WIRE COLOUR (T568B)
1 PAGING AUDIO SIGNAL – white-orange
2 PAGING AUDIO SIGNAL + orange
3 GROUND white-green
4 PAGING ENABLE SIGNAL blue
5ZONE A SELECTION white-blue
6 ZONE B SELECTION green
7 ZONE C SELECTION white-brown
8 ZONE D SELECTION brown
G ground
+ audio signal + (hot)
– audio signal – (cold)
G Ground
Is Input Selection
Mt Mute
G Ground
Vol Volume
G Ground

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25 SPEAKER OUTPUTS
DMA amplier speaker outputs allow either two channels for a low-impedance
connections or a single 70 V line for speakers having matching transformers.
Connector: EUROBLOCK (removable screw terminal block).
Connect speakers as shown in the gure.
Minimum load impedance is 4 Ω per speaker output.
DELIVERED POWER
DMA 82: 2 x 80 W RMS @ 4 Ω
DMA 162: 2 x 160 W RMS @ 4 Ω
Connect the speaker line as shown in the gure.
The two channels are bridged by setting the BRIDGE MODE
to ON (see the next manual sections ‘DMA 82 / DMA 162 operation
modes’ and ‘DMA 82 / DMA 162 settings’) in order to get a single
70 V line.
Do NOT connect the other two contacts.
All speakers shall have a matching transformer with 70 V input.
The overall speaker power shall not exceed 160 W (DMA 82) / 320 W
(DMA 162).
After inserting the correct password (menu: SETTING > PASSWORD), it is possible to set the
DMA operation among the three different modes: mono, stereo, bridge.
To activate the stereo mode, in the menu select the STEREO MODE parameter and turn it on.
To activate the bridge mode (single 70 V line output), in the menu select the BRIDGE MODE
parameter and turn it on.
The two parameters STEREO MODE and BRIDGE MODE are mutually exclusive, when turning
one on, the other automatically turns off. For the MONO mode, leave both parameters set to OFF.
26 Power cord input.
Connect the power cord only to a mains socket outlet with a protective earthing
connection.
27 Power switch: push to turn on (I) / off (O) the amplier.
SINGLE 70 V LINE
anImpedance equal to 4 Ω allows to get the max. power (80 / 160 w).
a hIgher Impedance leads to areductIon of the delIvered power (e.g. 8 Ω: ca. 40 / 80 w), an
Impedance lower than 4 Ω overloads the amplIfIer.
TWO CHANNELS (A, B) – LOW IMPEDANCE CONNECTION (4 Ω)
DMA 82 / DMA 162
OPERATION MODES
4Ω
-+
B
4Ω
-+
A
70V
-+

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The two outputs A and B are independent and have separate volume controls: OUT A
and OUT B.
The DMA can manage stereo inputs.
STEREO1 is the common volume for both left (A) and right (B) channels.
OUT 1L and the OUT 1R are the single channel volume controls (useful for balance).
The two outputs are bridged in order to get a single 70 V line (mono).
BRIDGE1 is the common volume control.
MONO
STEREO
BRIDGE
AA
BB
MATRIX ALL OUT
OUT A
OUT B
AA
BB
MATRIX ALL OUT
OUT 1L
OUT 1R
STEREO 1
A
A + B BRIDGED
(70 V)
B
MATRIX ALL OUT
OUTPUT VOLUME CONTROL BLOCK DIAGRAMS
note: ALL OUT Is always the master volume.
BRIDGE 1

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DMA 82 / DMA 162 SETTINGS
Press the front panel MENU button 3to enter the edit mode and select the menu
home page.
Turn the rotary encoder 2either clockwise to scroll the menu downwards or increase
the selected parameter value, turn it counterclockwise to scroll the menu upwards or
decrease the selected parameter value.
Press the rotary encoder 2to select (and enter a submenu).
Press the BACK / ESC button 4to quit the displayed menu.
All parameters highlighted in grey are available only after entering (in the setting menu)
the proper password / 4-digit code: 7471 .
All audio inputs highlighted in grey are available after setting the ADVANCED MODE
parameter (in the setting menu) to ON.
NOTES:
-when In stereo mode, all stereo Inputs (In 1, In 2, ext) are routed In stereo to maIn outputs
a, b and out / sub.
-bal In and bm Inputs are always routed In mono to all outputs.
-Inthe advanced mode, separate mono Inputs such as In 1l, In 1r, In 2l, In 2r, ext l and ext
r, when routed to astereo output, are sent to the respectIve channel only (left for Inputs labelled
‘l’, rIght for Inputs labelled ‘r’) and muted to the other channel.
HOME PAGE (when in mono mode)
OUT A Enter the OUT menu for OUT A only
OUT B Enter the OUT menu for OUT B only
ALL OUT Enter the ALL OUT menu
INPUT Enter the INPUT menu
BUS OUT Enter the BUS OUT menu
SETTING Enter the SETTING menu
HOME PAGE (when in bridge mode, 70 V out)
BRIDGE1 Enter the BRIDGE1 menu
ALL OUT Enter the ALL OUT menu
INPUT Enter the INPUT menu
BUS OUT Enter the BUS OUT menu
SETTING Enter the SETTING menu
HOME PAGE (when in stereo mode)
STEREO1 Enter the STEREO1 menu
OUT 1L Enter the OUT menu for the left channel (OUT A) only
OUT 1R Enter the OUT menu for the right channel (OUT B) only
ALL OUT Enter the ALL OUT menu
INPUT Enter the INPUT menu
BUS OUT Enter the BUS OUT menu
SETTING Enter the SETTING menu

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OUT MENU
VOLUME Adjusts the selected output volume level
MUTE Mutes (ON) or unmutes (OFF) the selected output
INPUT SELECTION Selects the audio input among: IN 1, IN 2, EXT (input reserved for
optional boards), BAL IN, BM (when used as aux input), IN 1L, IN 1R,
IN 2L, IN 2R, EXT L, EXT R
STEREO MODE Turns ON / OFF the STEREO mode
BRIDGE MODE Turns ON / OFF the BRIDGE mode
SPEAKER PRESET Selects the speaker preset (suitable for the used model)
HP FILTER Selects the high-pass lter cutoff frequency of the selected output
BASS ENHANCER Turns ON / OFF the bass enhancer
PEQ Enter to a submenu including two parametric equalizers (PEQ).
Select a PEQ and edit the GAIN, the FREQUENCY and Q factor
POLARITY Inverts (when ON) the signal polarity
STEREO1 MENU (when in stereo mode)
VOLUME Adjusts the output volume level of both outputs
MUTE Mutes (ON) or unmutes (OFF) both outputs
INPUT SELECTION Selects the audio input among: IN 1, IN 2, EXT (input reserved for
optional boards), BAL IN, BM (when used as aux input), IN 1L, IN 1R,
IN 2L, IN 2R, EXT L, EXT R
STEREO MODE Turns ON / OFF the STEREO mode
BRIDGE MODE Turns ON / OFF the BRIDGE mode
ALL OUT MENU
VOLUME Adjusts the output volume level of all outputs
MUTE Mutes (ON) or unmutes (OFF) all outputs
INPUT SELECTION Selects the audio input among: IN 1, IN 2, EXT (input reserved for
optional boards), BAL IN, BM (when used as aux input), IN 1L, IN 1R,
IN 2L, IN 2R, EXT L, EXT R
BRIDGE1 MENU (when in bridge mode)
VOLUME Adjusts the output volume level
MUTE Mutes (ON) or unmutes (OFF) the output (both channels)
INPUT SELECTION Selects the audio input among: IN 1, IN 2, EXT (input reserved for
optional boards), BAL IN, BM (when used as aux input), IN 1L, IN 1R,
IN 2L, IN 2R, EXT L, EXT R
STEREO MODE Turns ON / OFF the STEREO mode
BRIDGE MODE Turns ON / OFF the BRIDGE mode
SPEAKER PRESET Selects the speaker preset (suitable for the used model)
HP FILTER Selects the high-pass lter cutoff frequency of the selected output
BASS ENHANCER Turns ON / OFF the bass enhancer
PEQ Enter to a submenu including two parametric equalizers (PEQ).
Select a PEQ and edit the GAIN, the FREQUENCY and Q factor
POLARITY Inverts (when ON) the signal polarity

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INPUT MENU
After entering the INPUT menu, select an audio input among IN 1, IN 2, EXT (input reserved for optional
boards), BAL IN, BM, IN 1L, IN 1R, IN 2L, IN 2R, EXT L or EXT R to edit its parameters:
VOLUME Adjusts the level of the selected input
3B EQ 3-band equalizer: allows to adjust LOW, MID and HIGH frequencies
After choosing BAL IN, three additional parameters are available:
LINE/MIC LEVEL Sets the BAL IN level either as LINE or MIC
VOX Toggles ON / OFF the VOX function (automatic priority when a signal
is detected at the BAL IN) and sets the threshold LEVEL
POLARITY Inverts (when ON) the signal polarity
BUS OUT MENU
After entering the BUS OUT menu (relevant to the BUS output), select either a CHANNEL (1, 2, 3, 4) or SUB /AUX.
After selecting a channel, a submenu appears:
VOLUME Adjusts the level of the selected channel
MUTE Mutes (ON) or unmutes (OFF) the selected channel
FLAT EQ Toggles the FLAT EQ ON / OFF on the selected channel.
‘Flat Eq.’: no equalization
After selecting SUB / AUX, it is possible to toggle ON/OFF the SUB function of the rear panel
OUT / SUB 15 , 16 . If set to ON, those outputs are affected by a 80 Hz low-pass lter for connecting
active subwoofers.
SETTING MENU
PASSWORD Allows to enter the 4-digit code (7471) to access all parameters
OUTPUT LABEL Allows to give new labels to OUT A and OUT B in the menus
FACTORY RESET Allows to restore the factory settings
LANGUAGE Menu language selection
ADVANCED MODE If set to OFF (default), inputs IN 1, IN 2 and EXT are xed as stereo
pairs, if set to ON, additional input options are available

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DPA 162 FRONT PANEL
31 CH A / PEAK (two LEDs): CH A is lit when the audio signal is present on the channel A.
PEAK blinks when the signal level of the channel A reaches the clipping point, causing the
limiter intervention; if it is steady lit, its volume level is excessive and needsto be reduced.
32 CH B / PEAK (two LEDs): CH B is lit when the audio signal is present on the channel B.
PEAK blinks when the signal level of the channel B reaches the clipping point, causing the
limiter intervention; if it is steady lit, its volume level is excessive and needsto be reduced.
33 CHANNEL A MUTE (LED): when lit, the channel A output is muted.
34 CHANNEL B MUTE (LED): when lit, the channel B output is muted.
35 AUX input (3.5 mm stereo TRS jack).
To enable it, BUS / LOCAL 49 contacts (on the rear panel) need to be shorted.
If a jack plug is inserted into this input, the rear panel LOCAL INPUT 41 , 42 is
disabled.
36 STAND-BY button with LED: push to toggle the amplier on/stand-by.
The LED is lit white when the amplier is turned on, red when the amplier is in stand-by.
33 34 35
36
31 32

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DPA 162 REAR PANEL
S LOCAL
M LOCAL
ABBASS ON
BASS OFF
SUB
AUXC H SEL
5051 47 45 46 42 44
55 54 53 52 49 48 41 43
41 LOCAL INPUT (left channel): unbalanced line level input with RCA socket useful to
link a local music source. To enable this input, BUS / LOCAL 49 contacts need to be
shorted.
42 LOCAL INPUT (right channel): unbalanced line level input with RCA socket useful
to link a local music source. To enable this input, BUS / LOCAL 49 contacts need to be
shorted.
Ifajack plug Is Inserted Into the front panel AUX Input 35 , the rear panel audIo LOCAL IN 41 , 42
Is momentary dIsabled.
43 AUDIO OUTPUT (left channel) / SUB OUT: unbalanced line level output with RCA socket.
It can be set to send either a copy of the output A audio signal or the same signal ltered by a
low-pass lter (80 Hz) useful for connecting an active subwoofer.
44 AUDIO OUTPUT (right channel) / SUB OUT: unbalanced line level output with RCA
socket.
It can be set to send either a copy of the output B audio signal or the same signal ltered
by a low-pass lter (80 Hz) useful for connecting an active subwoofer.
45 BUS input (RJ45 socket): it needs to be linked to the BUS output of either the DMA
82/162 main unit (/ amplier) or the previous DPA 162 amplier.
46 BUS output (RJ45 socket): it needs to be linked to the BUS input of the next DPA 162
amplier.
47 Dip-switches (down: off, up: ON)
When the BUS / LOCAL 49 contacts are open (audio from the 4-channel BUS):
1BASS OFF / BASS ON If set to BASS ON, it turns on the bass enhancer on all outputs
2AUX / SUB If set to SUB, the rear panel OUT / SUB 43 , 44 outputs are affected by a 80 Hz
low-pass lter for connecting active subwoofers
3CHANNEL SELECTION A Audio output A channel selection (see the next table)
4
5CHANNEL SELECTION B Audio output B channel selection (see the next table)
6

19
ENGLISH
48 Blank panel to be removed when installing the optional RDNET board.
49 BUS / LOCAL(removable screw terminal block), logic input for dry contact:
When its contacts are open, DPA amplier receives audio signals from the BUS IN 45
(and its LOCAL IN is muted).
When its contacts are shorted, DPA amplier is directly linked to its LOCAL IN 41 , 42
only.
50 MUTE (removable screw terminal block): remote mute command (a dry closing
contact) active when its contacts are shorted.
51 GAIN A: turn it clockwise to increase the OUT A level or counterclockwise to
reduce it.
52 GAIN B: turn it clockwise to increase the OUT B level or counterclockwise to
reduce it.
IMPORTANT NOTE: both control GAIN A and GAIN B must be set to the same level when
the two output channels are brIdged (In order to get asIngle 70 v lIne).
When the BUS / LOCAL 49 contacts are shorted (audio from the LOCAL IN only):
Dip-switch 3 (A) or 5 (B) Dip-switch 4 (A) or 6 (B) Selected channel
off off BUS 1
off ON BUS 2
ON off BUS 3
ON ON BUS 4
1BASS OFF / BASS ON If set to BASS ON, it turns on the bass enhancer on all outputs
2AUX / SUB If set to SUB, the rear panel OUT / SUB 43 , 44 outputs are affected
by a 80 Hz low-pass lter for connecting active subwoofers
3not used
4not used
5not used
6M LOCAL / S LOCAL
If set to M LOCAL, LOCAL IN is mono (both channels are mixed and sent to
both outputs). If set to S LOCAL, LOCAL IN is stereo (left channel to OUT A,
right channel to OUT B).
53 SPEAKER OUTPUTS
Connector: EUROBLOCK (removable screw terminal block).
DPA amplier speaker outputs allow either two channels for a
low-impedance connections or a single 70 V line for speakers
having matching transformers.
Connect speakers as shown in the gure.
Minimum load impedance is 4 Ω per speaker output.
Delivered power: 2 x 160 W RMS @ 4 Ω
anImpedance equal to 4 Ω allows to get the max. power (160 w). a hIgher Impedance leads to
areductIon of the delIvered power (e.g. 8 Ω: ca. 80 w), an Impedance lower than 4 Ω overloads
the amplIfIer.
TWO CHANNELS (A, B)
LOW IMPEDANCE CONNECTION (4 Ω)
4Ω
-+
B
4Ω
-+
A

20
ENGLISH
Connect the speaker line as shown in the gure.
The two channels are bridged in order to get a single 70 V line.
Do NOT connect the other two contacts.
All speakers shall have a matching transformer with 70 V input.
The overall speaker power shall not exceed 320 W.
SINGLE 70 V LINE
54 Power cord input
Connect the power cord only to a mains socket outlet with a protective earthing connection.
55 Power switch: push to turn on (I) / off (O) the amplier.
SPECIFICATIONS
DMA 82 DMA 162 DPA 162
AMPLIFIER
Amplier class: D D D
Channel number: 2 2 2
Output power per channel @ 4 Ω: 80 W RMS 160 W RMS 160 W RMS
Output power @ 70 V (bridged): 160 W RMS 320 W RMS 320 W RMS
Frequency response (-3 dB): 20 ÷ 20000 Hz 20 ÷ 20000 Hz 20 ÷ 20000 Hz
Signal/noise ratio ('A' weighted): > 93 dB > 93 dB > 93 dB
Distortion (THD+N)
@ 1 kHz, nominal power: < 0.01% < 0.01% < 0.01%
AUDIO INPUTS
Audio input total number: 4 4 5 (1 + 4-ch. bus)
balanced / unbalanced: 2 / 2 2 / 2 4 / 1
stereo / mono: 2 / 2 2 / 2 1 / 4
VOX function (on BAL IN): Yes Yes -
Paging input: 1 1 -
Paging input connector: RJ45 RJ45 -
Paging command: Contact Contact -
Logic inputs: MUTE MUTE MUTE, BUS / LOCAL
AUDIO OUTPUT
OUT/SUB connectors: RCA RCA RCA
Speaker connectors: Euroblock Euroblock Euroblock
70V
-+