RCF DMA 82 User manual

OWNER’S MANUAL
MANUALE UTENTE
DMA 82
DMA 162
TWO-CHANNEL MATRIX AMPLIFIERS
DMA 162P
TWO-CHANNEL POWER AMPLIFIER

3
CONTENTS
CONTENTS ..................................................................................................................................................................................... 3
ENGLISH
SAFETY PRECAUTIONS AND GENERAL INFORMATION .................................................................................................................... 5
INTRODUCTION ABOUT THE BUSINESS MUSIC LINE ....................................................................................................................... 8
DMA 82 / DMA 162 DESCRIPTION AND MAIN FEATURES ............................................................................................................... 8
DMA 162P DESCRIPTION AND MAIN FEATURES ............................................................................................................................. 8
UNPACKING, INSTALLATION AND COOLING .................................................................................................................................. 9
AUDIO BLOCK DIAGRAM ............................................................................................................................................................... 9
DMA 82 / DMA 162 FRONT PANEL ............................................................................................................................................... 1
DMA 82 / DMA 162 REAR PANEL ................................................................................................................................................. 11
DMA 82 / DMA 162 OPERATION MODES ...................................................................................................................................... 13
DMA 82 / DMA 162 SETTINGS ...................................................................................................................................................... 15
RC 4 1 REMOTE CONTROLS ......................................................................................................................................................... 18
DMA 162P FRONT PANEL ............................................................................................................................................................. 2
DMA 162P REAR PANEL ............................................................................................................................................................... 21
ITALIANO
AVVERTENZE PER LA SICUREZZA ................................................................................................................................................. 24
INTRODUZIONE AI PRODOTTI DELLA LINEA BUSINESS MUSIC ....................................................................................................... 27
DMA 82 / DMA 162: DESCRIZIONE E CARATTERISTICHE PRINCIPALI ............................................................................................ 27
DMA 162P: DESCRIZIONE E CARATTERISTICHE PRINCIPALI .......................................................................................................... 27
DISIMBALLAGGIO, INSTALLAZIONE E RAFFREDDAMENTO ............................................................................................................ 28
DIAGRAMMA A BLOCCHI DEL SEGNALE AUDIO ........................................................................................................................... 29
DMA 82 / DMA 162: PANNELLO FRONTALE ................................................................................................................................. 3
DMA 82 / DMA 162: PANNELLO POSTERIORE .............................................................................................................................. 31
DMA 82 / DMA 162: MODALITÀ DI FUNZIONAMENTO ................................................................................................................. 33
DMA 82 / DMA 162: IMPOSTAZIONI............................................................................................................................................. 35
CONTROLLI REMOTI RC 4 1 ......................................................................................................................................................... 38
DMA 162P: PANNELLO FRONTALE ............................................................................................................................................... 4
DMA 162P: PANNELLO POSTERIORE ............................................................................................................................................ 41
DIMENSIONS ................................................................................................................................................................................ 44
SPECIFICATIONS ........................................................................................................................................................................... 45

4
ATTENTION
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
WARNING: SHOCK HAZARD – DO NOT OPEN
ATTENTION: RISQUE D’ELÉCTROCUTION - NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE
ATTENTION: NE PAS EXPOSER CE MATÉRIEL À LA PLUIE OU L’HUMIDITE AFIN DE REDUIRE
LE RISQUE D’INFLAMMATION OU DE CHOC ELÉCTRIQUE
PROTECTING EARTHING TERMINAL. THE APPARATUS SHOULD BE CONNECTED
TO A MAINS SOCKET WITH A PROTECTIVE EARTH CONNECTION.

5
SAFETY PRECAUTIONS AND GENERAL INFORMATION
Symbols used in this document give notice of important operating instructions and warnings which must be strictly followed.
CAUTION Important operating instructions: explains hazards that could damage a product,
including data loss
WARNING Important advice concerning the use of dangerous voltages and the potential
risk of electric shock, personal injury or death.
IMPORTANT NOTES Helpful and relevant information about the topic
SUPPORTS, TROLLEYS
AND CARTS
Information about the use of supports, trolleys and carts. Reminds to move with
extreme caution and never tilt.
WASTE DISPOSAL
This symbol indicates that this product should not be disposed with your
household waste, according to the WEEE directive (2 12/19/EU) and your
national law.
IMPORTANT NOTES
This manual contains important information about the correct and safe use of the device. 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.
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
a. The mains voltage is sufficiently high to involve a risk of electrocution; install and connect this product before plugging it in.
b. 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.
c. The metallic parts of the unit are earthed through the power cable. An apparatus with CLASS I construction shall be connected to
a mains socket outlet with a protective earthing connection.
d. Protect the power cable from damage; make sure it is positioned in a way that it cannot be stepped on or crushed by objects.
e. To prevent the risk of electric shock, never open this product: there are no parts inside that the user needs to access.
f. Be careful: in the case of a product supplied by manufacturer only with POWERCON connectors and without a power cord, jointly
to POWERCON connectors type NAC3FCA (power-in) and NAC3FCB (power-out), the following power cords compliant to national
standard shall be used:
-EU: cord type H 5VV-F 3G 3x2.5 mm2 - Standard IEC 6 227-1
-JP: cord type VCTF 3x2 mm2; 15Amp/12 V~ - Standard JIS C33 6
-US: cord type SJT/SJTO 3x14 AWG; 15Amp/125V~ - Standard ANSI/UL 62
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 filled with liquid, such as vases, shall be placed on this apparatus. No naked sources (such as
lighted candles) should be placed on this apparatus.
4. Never attempt to carry out any operations, modifications or repairs that are not expressly described in this manual. Contact your
authorized service centre or qualified personnel should any of the following occur:
-The product does not function (or functions in an anomalous way).
-The power cable has been damaged.

6
-Objects or liquids have got in the unit.
-The product has been subject to a heavy impact.
5. If this product is not used for a long period, disconnect the power cable.
6. If this product begins emitting any strange odours or smoke, switch it off immediately and disconnect the power cable.
7. Do not connect this product to any equipment or accessories not foreseen.
For suspended installation, only use the dedicated anchoring points and do not try to hang this product by using elements that are
unsuitable or not specific for this purpose. Also check the suitability of the support surface to which the product is anchored (wall,
ceiling, structure, etc.), and the components used for attachment (screw anchors, screws, brackets not supplied by RCF etc.), which
must guarantee the security of the system / installation over time, also considering, for example, the mechanical vibrations normally
generated by transducers. To prevent the risk of falling equipment, do not stack multiple units of this product unless this possibility is
specified in the user manual.
8. RCF S.p.A. trongly recommend thi product i only in talled by profe ional qualified in taller (or peciali ed
firm ) who can en ure correct in tallation and certify it according to the regulation in force. The entire audio
y tem mu t comply with the current tandard and regulation regarding electrical y tem .
9. Supports, trolleys and carts.
The equipment should be only used on supports, trolleys and carts, where necessary, that are recommended by the
manufacturer. The equipment / support / trolley / cart assembly must be moved with extreme caution. Sudden stops, excessive
pushing force and uneven floors may cause the assembly to overturn. Never tilt the assembly.
10. There are numerous mechanical and electrical factors 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
manual technical specifications to know the maximum sound pressure level.
OPERATING PRECAUTIONS
-Place this product far from any heat sources and always ensure an adequate air circulation around it.
-Do not overload this product for a long time.
-Never force the control elements (keys, knobs, etc.).
-Do not use solvents, alcohol, benzene or other volatile substances for cleaning the external parts of this product.
IMPORTANT NOTES
To prevent the occurrence of noise on line signal cables, use screened cables only and avoid putting them close to:
-Equipment that produce high-inten ity electromagnetic field
-Power cable
-Loud peaker line
WARNING! CAUTION! To prevent the ri k of fire or electric hock, never expo e thi product to
rain or humidity.
WARNING! To prevent electric hock hazard, do not connect to main power upply while grille i
removed.

7
WARNING! to reduce the ri k of electric hock, do not di a emble thi product unle you are qualified.
Refer ervicing to qualified ervice per onnel.
CORRECT DISPOSAL OF THIS PRODUCT
This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE).
Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially
hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product
will contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment
for recycling, please contact your local city office, waste authority or your household waste disposal service.
CARE AND MAINTENANCE
To ensure a long-life service, this product should be used following these advices:
-If the product is intended to be set up outdoors, be sure it is under cover and protected to rain and moisture.
-If the product needs to be used in a cold environment, slowly warm up the voice coils by sending a low-level signal for about 15
minutes before sending high-power signals.
-Always use a dry cloth to clean the exterior surfaces of the speaker and always do it when the power is turned off.
CAUTION: to avoid damaging the exterior fini he do not u e cleaning olvent or abra ive .
WARNING! CAUTION! For powered peaker , do cleaning only when the power i turned off.
FCC NOTES
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if it is not installed and used
in accordance with the instruction manual, it may cause harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his
own expense.
Modification : Any modifications made to this device that are not approved by RCF may void the authority granted to the user by
the FCC to operate this equipment.

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RCF S.p.A. thank you for purcha ing thi product, which ha been de igned to guarantee reliability and high
performance.
INTRODUCTION ABOUT THE BUSINESS MUSIC LINE
BUSINESS MUSIC line includes DMA 82 / DMA 162 digital matrix amplifiers, DMA 162P (also called DMA[P] in the following) digital
power amplifier, BM 4 4 paging microphone, remote controls and speakers, offering a complete sound system and maximizing the
overall acoustic performance. DMA / DMA[P] amplifiers 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 3 protection grade and high efficiency 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 configuration 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.
DMA 82 / DMA 162 DESCRIPTION AND MAIN FEATURES
DMA 82 and DMA 162 are two-channel class-D matrix amplifiers, 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 filters,
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 8 W RMS @ 4 Ω or a single 16 W 7 V line
-DMA 162 either 2 ch. x 16 W RMS @ 4 Ω or a single 32 W 7 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 filter useful for the connection to an active subwoofer. A dedicated input having RJ 45 connector allows the
connection of up to four BM 4 4 paging microphones (interlocked one another on a single chain). A RC 4 1 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 DMA[P] units (through a BUS with a single CAT5 cable), combining a flexible and scalable
multi-room architecture with an easy connection and installation. Its configuration 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).
DMA 162P DESCRIPTION AND MAIN FEATURES
DMA 162P is a two-channel class-D power amplifier. Output power: either 2 channels x 16 W RMS @ 4 Ω - or a single 32 W 7 V
line. Up to 4 DMA [P] can be linked to a single DMA unit in order to increase the system output power and implement multi-room
architectures. However, each DMA[P] can be used as a stand alone amplifier as well. Each amplifier is suitable for either desktop or
rack installation (thanks to its dedicated optional accessory). DMA[P] can receive processed audio signals from a DMA amplifier 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 amplifiers), 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 filter for the connection to an active subwoofer. Its configuration can be carried out
though either the dip-switches on its rear panel or RDNet (when its optional board is installed).

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UNPACKING, INSTALLATION AND COOLING
Check the carton box and its contents and if there is any sign of damage (should the amplifier be damaged, immediately inform your
local distributor / dealer and the forwarder). It is always advisable to keep the packing materials, even if the amplifier has arrived in
good condition. The power cord is included. DMA / DMA[P] amplifiers can be installed into a 19” rack cabinet (an optional accessory
is required for every pair, as each amplifier needs half a rack unit). Amplifiers should not be installed in a place with:
-Too high temperature, dust or excessive humidity.
-Exhaust air ventilators.
-Permanent vibrations.
-High-intensity electromagnetic fields (due to transformers, transmitters, etc.).
Make sure there is an adequate ventilation and amplifiers 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.
AUDIO BLOCK DIAGRAM

1
DMA 82 / DMA 162 FRONT PANEL
[1] Display (OLED). When no menu is selected, the current output levels are displayed as bars.
[2] Rotary 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).
[3] MENU button: press to enter the edit mode and select the menu home page.
[4] BACK / ESC button: press to quit the displayed menu. If pressed for 4 seconds, it activates the “lock” state of the front panel and
inhibit all commands. A small locker icon in the upper-left corner of the display will be shown. To release the function press again for
4 seconds.
[5] 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 needs to be
reduced.
[6] 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 needs to be
reduced.
[7] CHANNEL A MUTE (LED): when lit, the channel A output is muted.
[8] CHANNEL B MUTE (LED): when lit, the channel B output is muted.
[9] AUX 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 amplifier on/stand-by. The LED is lit white when the amplifier is turned on, red
when the amplifier is in stand-by.

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DMA 82 / DMA 162 REAR PANEL
[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.
If a jack 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 filtered by a low-pass filter (8 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 filtered by a low-pass filter (8 Hz) useful for connecting
an active subwoofer.
[17] BUS output (RJ45 socket): it needs to be linked to the BUS input of the first DMA[P] amplifier (if present).
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

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[18] BM: input (RJ45 socket) for BM 4 4 paging microphones. Up to four BM 4 4 paging microphones can be linked in ‘daisy-chain’.
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
5 ZONE A SELECTION white --- blue
6 ZONE B SELECTION green
7 ZONE C SELECTION white --- brown
8 ZONE D SELECTION brown
As alternative (when no BM 4 4 microphones are connected), BM input can also be used as additional auxiliary input by connecting
the first 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 amplifier through the
RDNET software or update its firmware.
[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.
G ground
+ audio signal + (hot)
- audio signal – (cold)
[22] MUTE: (removable screw terminal block): remote mute command (a dry closing contact) active when its contacts are shorted.
[23] RMT B and [24] RMT A: input (removable screw terminal block) for optional RC 4 1 remote controls. Refer to the specific
section for functioning instructions. RC 4 1 pin out is shown in the table below.
G Ground
Is Input Selection
Mt Mute
G Ground
Vol Volume
G Ground

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[25] SPEAKER OUTPUTS
DMA amplifier speaker outputs allow either two channels for a low-impedance connection or a single 7 V line for speakers having
matching transformers.
Connector: EUROBLOCK (removable screw terminal block).
TWO CHANNELS (A, B) --- LOW IMPEDANCE CONNECTION (4 Ω)
Connect speakers as shown in the figure.
Minimum load impedance is 4 Ω per speaker output.
DELIVERED POWER
DMA 82: 2 x 8 W RMS @ 4 Ω
DMA 162: 2 x 16 W RMS @ 4 Ω
An impedance equal to 4 Ω allows to get the max. power (8 / 16 W).
A higher impedance leads to a reduction of the delivered power (e.g. 8 Ω: ca. 4
/ 8 W), an impedance lower than 4 Ω overloads the amplifier.
BRIDGE MODE OR HI IMPEDANCE 70 V
Connect speakers as shown in the figure.
BRIDGE MODE
Channel A, B are bridged by etting the BRIDGE MODE to ON (see the
next manual sections ‘DMA 82 / DMA 162 operation modes’ and ‘DMA 82 / DMA
162 settings’) and can work both at low impedance speakers and hi impedance
(7 V).
Do NOT connect the other two contacts.
The overall speaker power shall not exceed 16 W (DMA 82) / 32 W (DMA 162).
[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 amplifier.
DMA 82 / DMA 162 OPERATION MODES
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 7 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.

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OUTPUT VOLUME CONTROL BLOCK DIAGRAMS
Note: ALL OUT is always the master volume.
MONO
The two outputs A and B are independent and have separate volume controls: OUT A and OUT B.
STEREO
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).
BRIDGE
The two outputs are bridged or can get a single 7 V line (mono).
BRIDGE1 is the common volume control.

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DMA 82 / DMA 162 SETTINGS
Press the front panel MENU button [3] to enter the edit mode and select the menu home page.
Turn the rotary encoder [2] 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 the rotary encoder [2] to select (and enter a submenu).
Press the BACK / ESC button [4] to 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.
-In the advanced mode, separate mono inputs such as IN 1L, IN 1R, IN 2L, IN 2R, EXT L and EXT R, when routed to a stereo
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 tereo 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
HOME PAGE (when in bridge mode, 7 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

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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 filter 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 tereo 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
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 filter 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

17
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
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
FLAT EQ Toggles the FLAT EQ ON / OFF on the selected channel.
‘Flat Eq.’: no equalization
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. Available only for CHANNEL 3 and CHANNEL 4
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 8 Hz low-pass filter for connecting
active subwoofers.
SETTING MENU
PASSWORD Allows to enter the 4-digit code (7471) to access all parameters
INFO Shows information related to firmware versions and amplifier temperature.
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 fixed as stereo pairs, if set
to ON, additional input options are available

18
RC 401 REMOTE CONTROLS
RC 4 1 is a wall mount remote that works in combination with DMA units. It can be connected to each DMA power output and allows
adjusting the output volumes, muting them or selecting the desired input program.
When RC 401 i connected to a DMA unit, it i the only output volume control, are the corre ponding control
in the DMA menu will be di abled.
RC 4 1 provides the following functions:
[A] OUTPUT VOLUME CONTROL. The knob adjusts the output volume in the range -36 dB ÷ +12 dB.
[B] SELECT INPUT. Allows to loop DMA unit inputs, with sequence IN 1 > IN 2 > BAL IN.
[C] MUTE. Mutes the DMA unit output volume.
RC 4 1 shall be connected on the rear panel of DMA units, with the dedicated removable screw terminal connectors.
-It is possible to connect one RC 4 1 to each DMA unit power output.
-The maximum distance between DMA unit and RC 4 1 is 5 m.
-Connection shall be done with CAT5 shielded cable.
Wiring cheme hown in Figure 1 and Figure 2 repre ent the configuration to implement the application
de cribed in the following table .
Figure 1

19
Figure 2
RMT A
AMPLIFIER
SETTING
COMMAND FUNCTION
MONO VOLUME Acts on OUT A VOLUME only
MUTE Acts on OUT A MUTE only
SELECT INPUT Acts on OUT A INPUT SELECTION only INPUTS ROUTING
IN1 MONO
IN2 MONO
EXT MONO
BAL IN
STEREO VOLUME Acts on OUT A and OUT B VOLUME at the same
time
MUTE Acts on OUT A and OUT B MUTE at the same time
SELECT INPUT If BAL IN is selected, routes the same input on
OUT A and OUT B; if a stereo input is selected,
routes LEFT channel on OUT A and RIGHT channel
on OUT B
INPUTS ROUTING
OUT A IN1 L OUT B IN1 R
IN2 L IN2 R
EXT L EXT R
BAL IN BAL IN
BRIDGE VOLUME Acts on OUT A and OUT B VOLUME at the same
time; BUS OUT B polarity will be shifted
MUTE Acts on OUT A and OUT B MUTE at the same time
SELECT INPUT Routes the same input for OUT A and OUT B
(mono)
INPUTS ROUTING
IN1 MONO
IN2 MONO
EXT MONO
BAL IN

2
RMT B
AMPLIFIER
SETTING
COMMAND FUNCTION
MONO VOLUME Acts on OUT B VOLUME only
MUTE Acts on OUT B MUTE only
SELECT INPUT Acts on OUT B INPUT SELECTION only INPUTS ROUTING
IN1 MONO
IN2 MONO
EXT MONO
BAL IN
APPLICATIONS Single unit – 2 zones (Figure 1)
STEREO /
BRIDGE
VOLUME Acts on BUS OUT 3 VOLUME only
MUTE Acts on BUS OUT 3 MUTE only
SELECT INPUT Acts on BUS OUT 3 INPUT SELECTION only INPUTS ROUTING
IN1 MONO
IN2 MONO
EXT MONO
BAL IN
APPLICATIONS 2 units - 2.1 system - RMT A is used only and a
parallel between RMT A and RMT B is needed
(Figure 2)
2 or more units – 2 zones bridge or 7 V.
DMA 162P 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 needs to
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 needs to be
reduced.