RCF MXR 4500 User manual

OWNER’S MANUAL
MANUALE UTENTE
MXR 4500
RACK MOUNT AMPLIFIED MASTER UNIT

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CONTENTS
CONTENTS .................................................................................................................................................................. 3
SAFETY PRECAUTIONS AND GENERAL INFORMATION ................................................................................................. 5
DXT 3000 SYSTEM DESCRIPTION ................................................................................................................................. 9
UNPACKING, INSTALLATION AND COOLING.............................................................................................................. 11
CONFIGRATION EXAMPLES ....................................................................................................................................... 12
MAIN BOARD ............................................................................................................................................................ 13
MESSAGES SD CARD BOARD ..................................................................................................................................... 21
INTERLINK BOARD ..................................................................................................................................................... 23
SPARE AMPLIFIER SETTING ........................................................................................................................................ 26
BATTERIES CONNECTION .......................................................................................................................................... 27
LOUDSPEAKERS CONNECTION .................................................................................................................................. 29
FIRE ALARM SYSTEM MONITORING ........................................................................................................................... 3
START UP PROCEDURE .............................................................................................................................................. 35
FRONT PANEL BOARD ............................................................................................................................................... 36
FRONT PANEL ........................................................................................................................................................... 37
PARAMETER LIST ....................................................................................................................................................... 39
DIMENSIONS ............................................................................................................................................................. 5
SPECIFICATIONS ........................................................................................................................................................ 6

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.

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RCF S.p.A. thanks you for purchasing this product, which has een designed to guarantee relia ility and
high performance.
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 (2012/19/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. This is a professional product. Its use is reserved to instructed persons, in relation to the connected risks.
3. 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.

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f. Be careful: in the case of a product supplied by manufacturer only with POWERCON connectors and without a
power cord, all power cords and plug assemblies shall be in compliance with the requirements of the IEC 62368-
1 and certified and suitable for use in the particular countries where the product shall be installed.
4. 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.
5. 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.
-Objects or liquids have got in the unit.
-The product has been subject to a heavy impact.
6. This product does not contain user replaceable fuses. Fuses replacement is a service operation and must be performed
by qualified personnel.
7. If this product is not used for a long period, disconnect the power cable.
8. If this product begins emitting any strange odours or smoke, switch it off immediately and disconnect the power
cable.
9. 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.
10. RCF S.p.A. strongly recommends this product is only installed y professional qualified installers (or
specialised firms) 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.
11. 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.
12. 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.).
13. 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.).

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-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 produces high-intensity electromagnetic fields
-Power ca les
-Loudspeaker lines
WARNING! CAUTION! To prevent the risk of fire or electric shock, never expose this
product to rain or humidity.
WARNING! to reduce the risk of electric shock, do not disassem le this product unless you are
qualified. Refer servicing to qualified service personnel.
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.
-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 finishes do not use cleaning solvents or a rasives.
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.

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Modifications: 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.
RCF S.p.A. reserves the right to make changes without prior notice to rectify any errors and / or
omissions. Always refer to the latest version of the manual on www.rcf.it.

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IMPORTANT: this manual is for only trained and qualified personnel for installation and
maintenance of the system.
DXT 3000 SYSTEM DESCRIPTION
DXT 3000 is a voice alarm system in compliance with EN 5 -16 (‘Fire detection and fire alarm systems’, part 16: ‘Voice
alarm control and indicating equipment’) and EN 5 - (Part : ‘Power supply equipment’).
It is suitable for emergency announcements, paging and background music, in small-size environments.
Connections are simple and its use is easy and immediate.
Its settings are user definable, but its emergency functions, which shall meet all system requirements and its installation
(UNI ISO 72 0-19).
MXR 500 is the main unit with a metallic enclosure for rack-mounting into a 19” rack cabinet ( units), and it has all
necessary components inside for the system operating, included a digital sound processor (DSP) that allows a proper
equalization.
Every MXR 500 main unit has:
•An audio input for a line made of up to four monitored BM 380 paging microphones for selective announcements
(linked in ‘daisy-chain’, with or without additional BE 3806 keyboards, according to the max. number of zones).
•An AUX audio input mainly used for a line made of one or more BM 3022 paging microphones (not monitored and
linked in ‘daisy-chain’) for general calls only. This input has also the VOX automatic priority (if enabled in the display
menu) when an audio signal is detected.
•An audio input for a background music source (i.e. MP3 / CD players, tuners, etc.).
•Logic inputs and outputs to interface to the fire alarm system (or others).
•An internal player of pre-recorded messages stored on monitored SD CARD.
•A simple MP3 player on its front panel, with an additional AUX IN (1/8” jack) for external audio sources.
•An internal slot for the INTERLINK board (optional), necessary to link more main units one another.
Each MXR 500 main unit can be delivered with either two or (on request) four / six built-in RCF class D+ power amplifiers
(according to the needs), in order to have either two or four / six zones.
Thanks to its internal digital matrix, each power amplifier can send to its zone a different signal (among all the available,
e.g. emergency / routine announcements, pre-recorded messages, background music).
The last available amplifier (the second or the fourth or the sixth) can be alternatively used as spare (with automatic
change-over).
The total maximum output power (sum of all zones) is 500 W and freely assigna le within the limit of 250
W per each zone (power that corresponds to either a 40 Ω load at 100 V or a 20 Ω load at 70 V).
Amplifier outputs are for 100 V / 70 V constant voltage speaker lines.
Each zone has two outputs (to get redundant lines).

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MXR 500 main unit has a backup power supply that meets the EN 5 - standard, with recharging unit and check of
batteries (18 Ah).
To ensure a full system efficiency, it is strongly advised to check batteries every two years and replace them if necessary.
Electronically, the system is composed of:
•Main board
•Power supply board (EN 5 - :2007 compliant)
•1, 2 or 3 amplifier boards, each having 2 amplifiers (total max. output power: 500 W)
•MP3 audio player
•Message player board with monitored SD CARD
DXT 3000 SYSTEM PAGING MICROPHONES
BM 3804
Monitored and preamplified desk-top paging microphone, with gooseneck and electret capsule, for selective calls on
different zones selected through its keyboard.
Up to four BM 3500 paging microphones (interlocked one another) can be linked in ‘daisy-chain’ (and directly connected
to the MXR 500 main unit).
The total cable length (CAT 6 FTP or J-type) cannot exceed 1 km.
BE 3806
Additional keyboard for BM 380 paging microphones, with six pre-configured keys.
A single BM 380 paging microphone can be expanded with maximum six BE 3806 additional keyboards (up to total
maximum of 67 keys in the system).
BM 3022
Preamplified desk-top paging microphone, with gooseneck and electret capsule, for general calls only. Up to thirty BM
3022 paging microphones can be linked in ‘daisychain’ (in a single line) and used either in mixing (more microphones
turned on simultaneously) or in lock mode (only a microphone activated at a time).

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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.
The main unit MXR 500 shall be placed in a closed environment, within a protected area not subjected to conditions
that may affect its operation, for example: moisture, salt, water infiltration, extreme temperatures, shocks, etc.
MXR 500 master unit shall be installed into a 19” rack cabinet ( units) leaving 1 empty unit between other units, in
order to guarantee the air flow necessary for an effective thermal dissipation.
Moreover, it shall 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).
Audio signal cables, speaker lines and power cords shall be kept separate from one another.
For safety reasons, never disconnect the earth (ground) pin of the mains power cord. Use audio
shielded ca les to avoid hum and interference.

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CONFIGRATION EXAMPLES
A basic configuration (for instance, including a MXR 500/2 main unit, a BM 380 paging microphone and, eventually,
an additional optional external music source) is suitable for a system with either a single zone or two, in which the total
speaker power does not exceed 500 W (max. 250 W per zone, in any proportion on the two speaker lines A, B). Several
logic inputs / outputs are available to get DXT 3000 interfaced to the fire alarm system (or others). In case of a single-
zone system, the second amplifier is used as spare (with automatic change-over).
On request, the main unit can be delivered with four (MXR 500/ ) / six (MXR 500/6) built-in power amplifiers.
The overall power is always 500 W and it can be freely shared among the four / six zones (within the limit of max. 250 W
per zone, power that corresponds to either a 0 Ω load at 100 V or a 20 Ω load at 70 V).
The last amplifier (the forth or the sixth) can be alternatively used as spare (with automatic change-over).

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MAIN BOARD
The main board is the system control unit and linked to all the other boards.
It can be accessed by loosening the screws [A] on the back of the unit and then removing the cover [B].

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Once removed the cover, system’s connections and settings will be available.
SYSTEM’S CONNECTORS
[1] Input for monitored paging microphones with emergency purposes (e.g. BM 3804).
PIN DESCRIPTION BM 3804 CABLE – WIRE COLOUR
+ Audio signal (+, hot) Orange/White (RJ pin 1)
- Audio signal (–, cold) Orange (RJ pin 2)
A Serial port RS 85 A (+) Brown/White (RJ pin 7)
B Serial port RS 85 B (–) Brown (RJ pin 8)
+V + 2 V dc power supply Green/White (RJ pin 3)
G Ground Blue, White/Blue, Green (RJ pins -5-6)

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Correspondence of wires between CAT 6 and CJ 28CAT cables:
PIN DESCRIPTION CAT 6 WIRE COLOUR CJ 428CAT WIRE COLOUR
1 Audio signal (+, hot) Orange/White Red
2 Audio signal (–, cold) Orange Blue
3 Power supply Green/White Yellow
Ground Blue Brown
5 Ground Blue/White Green
6 Ground Green Grey
7 RS 85 A (+) Brown/White White
8 RS 85 B (–) Brown Black
NOTE: in case of excessive background noise (on BM 380 audio signal), link the cable shield to the earth by
fixing it to the hole on the motherboard next to the BM 380 input, between two washers (a flat and a grower.

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[2] AUX input, mainly for BM 3022 paging microphones (not monitored).
PIN DESCRIPTION BM 3022 CABLE – WIRE COLOUR
+ Audio signal (+, hot) Orange/White (RJ pin 1)
- Audio signal (–, cold) Orange (RJ pin 2)
G Ground (audio) Blue (RJ pin )
Pg Priority and activation command Green (RJ pin 6)
G Priority and activation command ground Green/White (RJ pin 3)
[3] BGM IN balanced audio input normally linked to the internal MP3 player, but also assignable to an external
background music source (e.g. CD / MP3 player, tuner, etc.).
PIN DESCRIPTION
+ Audio signal (+, hot)
- Audio signal (–, cold)
G Ground (audio)
Mt MUTE command
G MUTE command ground
[4] ANY EVAC OUT logic output (relay normally open dry contact), activated (relay contact shorted) when
evacuation is in progress. (*)
[5] GENERAL FAULT logic output: relay normally closed dry contact (when MXR 500 is turned on) that opens
when either a fault is detected or MXR 500 is off.
[6] GPIN MSG RESET. Opto-isolated logic input (enabled when 5 ÷ 8 V dc voltage is applied to its two contacts):
when activated, it stops the evacuation / alert message playback.
[7] GPIN MSG MUTE. Opto-isolated logic input (enabled when 5 ÷ 8 V dc voltage is applied to its two contacts):
when activated, it mutes the audio signal of the evacuation / alert message in progress, but its playback is not
stopped.

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[8] Logic input for the external power supply fault. The two contacts (PSU and G) need to be kept open when
the external power supply is normal.
Shorting the two contacts entails the fault indication.
[9] Logic input to toggle the day / night operating mode:
-- ‘DAY’, the two contacts (N/D and G) are open
-- ‘NIGHT’, the two contacts (N/D and G) are shorted.
The ‘NIGHT’ mode attenuates the background music volume (BGM IN [3] level).
[10] FORCE EVAC/ALERT IN. Six opto-isolated logic inputs (one for each of the six possible zones) to force the
evacuation / alert message playback with the mode defined by setting the GPIN MODE dip-switch [17]. The
activation of the message playback in one or more zones is carried out by applying 5 ÷ 8 V dc voltage to their
respective + and – contacts. See page 33 ‘Fire Alarm System Monitoring’.
All opto-isolated logic inputs allow the line monitoring (by the linked device) through two internal resistors: 1
kΩ in series and 6.8 kΩ in parallel.
[11] EVAC/ALERT/PAGING OUT. Six logic outputs (one for each of the six possible zones). Each is activated (the
two contacts are shorted) during an announcement from a paging console or the playback of the evacuation /
alert message, with the mode defined by setting the GPO MODE dip-switches [17]. (*)
(*) All logic output relays have the followings specs.:
•Max. current: 2 A
•Max. switching voltage: 100 V
•Max. switching power: 30 W
JUMPERS SETTINGS

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[12] BM 3804 TRIM jumper: BM 380 [1] audio input gain setting, useful to compensate for possible signal
attenuation along the line.
JUMPER SETTING INPUT GAIN
not inserted no gain
pins 1 – 2 + 3 dB
pins 2 – 3 + 6 dB
[13] BM 3804 jumper to select the BM 380 paging microphone input between the two options, either LOCAL
(default setting) or INTERLINK (only when the optional INTERLINK board is present).
JUMPER SETTING FUNCTION
LOCAL (default setting): the BM 380 [1] input is used for the connection of the BM
380 paging microphone line.
ITL INTERLINK (only with the optional INTERLINK board): the BM 380 paging
microphone line is connected to the INTERLINK board and the direct BM 380 [1]
input is disabled.
[14] BM 3022 TRIM jumper: BM 3022 [2] audio input gain setting, useful to compensate for possible signal
attenuation along the line.
JUMPER SETTING INPUT GAIN
not inserted no gain
pins 1 – 2 + 3 dB
pins 2 – 3 + 6 dB
[15] BGM jumper to define the use of the local background music source (connected to the BGM IN [3] input) that
can be set to either LOCAL or INTERLINK (only when the optional INTERLINK board is present).
JUMPER SETTING FUNCTION
LOCAL (default setting): the audio signal of the music source linked to the BGM IN [3]
input is only available for the MXR 500 main unit to which it is connected.
ITL INTERLINK (only with the optional INTERLINK board): the audio signal of the
music source linked to the BGM IN [3] input is shared by all devices connected
through the INTERLINK board.

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[16] BGM LEVEL jumper: BGM IN [3] audio input gain setting.
JUMPER SETTING INPUT GAIN
not inserted no gain
pins 1 – 2 + 3 dB
pins 2 – 3 + 6 dB
DIP-SWITCH
DIP-SWITCH SETTING FUNCTION
LOCAL BM 3804
OFF BM 380 paging microphones linked to the INTERLINK board (when
available).
ON BM 380 paging microphones are connected to the BM 380 [1] input
and directly control the zone selection.
GPIN MODE
OFF
SINGLE – EVACUATION mode: the activation of each logic input [10]
entails the playback of the evacuation message in its zone (A = zone 1,
B = zone 2, C = zone 3, D = zone , E = zone 5, F = zone 6).
ON
DUAL – EVACUATION / ALERT mode: the activation of the first three
logic inputs A, B, C [10] entails the playback of the evacuation
message in zone pairs (A = zones 1-2, B = zones 3- , C =zones 5-6);
the activation of the second three logic inputs D, E, F [10] entails the
playback of the alert message in zone pairs (D = zones 1-2, E = zones
3- , F = zones 5-6). Note: the evacuation message has the priority.
GPOUT MODE 1
GPOUT MODE 2 1: OFF, 2: OFF
SINGLE – EVACUATION / ALERT mode: each logic output [11] (when
activated) indicates the playback of the evacuation / alert message in
its zone (A = zone 1, B = zone 2, C = zone 3, D = zone , E = zone 5,
F = zone 6).

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1: ON, 2: OFF
SINGLE – EVACUATION / PAGING mode: each logic output [11] (when
activated) indicates the playback of the evacuation message or paging
in its zone (A = zone 1, B = zone 2, C = zone 3, D = zone , E = zone
5, F = zone 6).
1: OFF, 2: ON
DUAL – EVACUATION / ALERT / PAGING mode: the first three logic
outputs A, B, C [11] (when activated) indicate the playback of the
evacuation / alert message in zone pairs (A = zone 1-2, B = zone 3- ,
C =zone 5-6); the second three logic outputs D, E, F [11] (when
activated) indicate paging in zone pairs (D = zone 1-2, E = zone 3- , F
= zone 5-6).
1: ON, 2: ON Not used.
SPARE
AMPLIFIER
OFF No spare amplifier.
ON The last available amplifier is assigned as spare.
NOTE: see dedicated paragraph to activate the spare amplifier.
SWITCH OFF/ON
OFF
Since the system is designed to be left switched on, this setting forces
its shutdown to allow the connection of batteries (in order to avoid
possible sparks).
ON The system is turned on and operating.
DIP-SWITCH nr.7 Not used.
100V / 70V
OFF Speaker line voltage: 100 V.
ON Speaker line voltage: 70 V.