MB Audiosystems MB, MB 8.1, MB 12.1, MB 15.2, MB 12.2W User Manual

Series

Powered Loudspeaker Systems

User Manual

V.3.3

www.mbaudiosystems.com

MB Series Powered Loudspeaker

]]01- MBSeries Powered Loudspeaker. The specificmodel is written on Connectors Panel

]]01- Neutrik PowerCon mains connector and wiring guide (at the end of the User Manual)

01- User Manual(in the same box or in an attached envelope)
01- Warrantystatement (included in the User Manual)

After unpacking MB Series Loudspeaker, please inspect forany physical damage and retain allpacking
materials for use, should ever the unit need returning. In the event that damage has occurred, please
notify your dealer immediately, so that a claim to cover the damages can be initiated.

- Packing list

MB Series Loudspeakers Description

MB Series include Full Range Loudspeakers (MB 8.1, MB 12.1, MB 15.2), Stage Monitors (MB

12.2W, MB MAV-2W) and SubWoofers (MB 12.0, MB 18.0). All systems
technology amplifiers, close coupled signal processing, and state-of-the-art drivers housed in rugged,
roadworthy loudspeaker enclosures.
in order to optimize c
response over possible range. As a result
for high demanding applications in terms of details definition and sonic quality, arrayability and wide
dynamics program material.

the widest MB Series Loudspeakers are particularly suitable

overage pattern control vs. frequency and to perform smooth frequency and phase

Acoustic and electronicstructure of MBLoudspeakers is designed

combine advanced-

Important Warnings

Before you use MB Series products, read User Manual carefully and observe all the safety

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precautions. It is important for your protection and helps to avoid equipment failures. Keep User
Manual in a safe place so that it is available for future reference. Please give the Manual to the new
owner in case you sell this unit. Copies are available at your dealer.
This unit needs to be installed, connected and used only according to the instructions described in this

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Manual. The manufacturer declines all responsibilities in case of wrong or unforseen installation as
well as for wrong usage.

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This device is studied for professional usage. All its functions need to
technical knowledge or sufficient experience to enable them to wo
necessary to evaluate and avoid risks due to electricity, mechanical stability

be operated by personnel with

rk properly. Particularly it is

and suspended loads.

Important Safety Instructions and Precautions

Disconnect MB Loudspeaker from mains supply before making or changing connections, when left

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unused for along period of time and during lightning storms.
Lay all cables to and from the unit so that they cannot be crushed by vehicles or other equipment and

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that no one can step on them.
Mains voltage and frequency must be the same as printed in this manual (on page 11) and on the rear

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panel of the unit.
receptacle must be connected to a fuse or circuit breaker.
MB Series Loudspeakers must be grounded. The unit must not be operated unless the power cord

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“Ground” wire is properly terminated. It isimportant as well to make sure thatall of equipments in the
reinforcement system are properly grounded. Removing any protective ground connection or cable
shield connection is strongly not recommended. This is important for personal safety, as well as for
proper control over the system grounding.

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Do not remove covers, do not disassemble electronic modules. No user serviceable parts inside, refer
servicing to qualified service personnel.

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The unit must not be operated and service by qualified personnel should be provided when:

-Mains power cordis frayed or broken.

Only use proper mains power cord and connectors (Neutrik PowerCon). The

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-Objects or liquid have fallen into the unit, or the unit has been exposed to rain.

-The unit was dropped or the cabinet is damaged.

-The unit does not appear to operate normally.

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Keep dust, moisture, water or other liquids away from the unit. Ensure that it is protected from heat
and vibrations during both operation and storage.
MB Loudspeakers are convection-cooled systems. Heatsink may become hot while the unit is

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operating: use caution when approaching it.
In order to ensure adequate heat disposal the heatsink on the rear panel of the loudspeaker must not be

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covered, not be under direct sunlight or spotlights, and adequate space for air ventilation must be
provided.

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This product may be capable of producing sound levels which could cause permanent hearing loss.
Do not operate at high volume levels o
responsible for the audio system should organize proper protection for himself and for the audience,
in order to prevent exposure to potentially dangerous SPL levels. If you experience any discomfort or
ringing in the ears, or suspect an hearing loss, you should consult an audiologist.

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Loudspeakers produce a static magnetic field even if they are not connected or are not in use. Take
care not to place any object close to loudspeakers, which may be damaged by magnetic fields.

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To meet the EMC requirements and minimize induced noise, use only shielded balanced cables with
properly connected plugs for all signal and shield terminals.

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Note that restrictions may be applied by local authorities for temporary or fix installations in relation
to harmonics and voltage fluctuations (flicker), and to specific EMC emission-immunity issues.

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Note that, a acoustical interference and malfunctions
may occur if the unit is operated in the immediate vicinity of
radiation (e.g. power amplifiers, light dimmers, RF
phones, etc.). Damage to the unit is unlikely, but cannot be excluded.
ensure to keep signal cables as far as possible from mains cables.

s any equipment including signal processing,

r at a level that is uncomfortable. The sound engineer or the

a strong source of electromagnetic

transmitters, wireless microphones, mobile

For the same reason, please

Mechanical Installation

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When stacking loudspeakers or setting up loudspeaker stands, make sure they are standing on a firm
and flat surface. Especially if you place loudspeakers on top of one another, unwanted movements
may occur due to sound vibrations, wind, etc. Use straps to secure them against dangerous
movements. Improper stacking could result in loudspeakers falling and causing injury.

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MB 12.1, MB12.2W and MB 8.1 (this one provided with U bracket adaptor) can be mounted on
loudspeaker stand (35 mm diameter). Please refer to stand documentation for detailed instructions.
Improper installation or usage could result in the loudspeaker falling and causing injury.

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MB 15.2, MBMAV-2W,MB 12.0 andMB 18.0 are not intended for use on loudspeaker stand.

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MB 12.0 andMB 18.0, using a proper stand, can support MB 8.1, MB 12.1 or MB12.2W.
Both models MB 12.1and MB 15.2 can be flown, but never hang more than 3 loudspeakers under one

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another. Specific MB suspension hardware must be used. Please contact your dealer and refer to MB
Suspension Hardware Manualfor important operative and safety instructions.
MB 8.1 can be flown using the adequate U bracket adaptor and other specific hardware. Never link to

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each-other more cabinets in a vertical line for safety reasons. Please contact your dealer and refer to
MB Suspension HardwareManual for important operative and safety instructions.
For all suitable models, when hanging the loudspeaker, at least 2 hanging points must be used. An

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additional and indipendent safety point for each loudspeaker is strongly recommended.

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MB MAV-2W, MB12.0 andMB18.0 are only intended for use on the floor.

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Whether MB systems are suspended or not, adequate grade (at least 8.8) M10 screws must be
completely screwed into all of the threded holes, since these are parts of internal bracing structure of
the cabinet. This is also important to assure the proper acoustical performance of the systems.

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The handles on loudspeakers are for transportation. They are not designed for suspension or hanging.

Furthermore, as a basic safety notice, consider that this manual does not explain how to suspend
loudspeakers. To properly suspend any loudspeaker, a knowledge of structural engineering and

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structural rigging is required. The improper installation of flying loudspeakers may result in bodily
injury or death. Always consult a licensed engineer to verify design and construction of any suspended
system, and to determine if rigging hardware, loudspeakers and their internal bracing parts are suitable
for your particular use. The owner and/or the user have responsibility to adhere to local regulations, to
evaluate reliability of any rigging system they use for their specific application and to determine
suitability of this product for any particular suspended usage. The manufacturer accepts no
responsibility for any accident, damage or failure of any rigged and suspended system.
In addition, please follow these safety steps:

Use only hardwarespecifically designed for rigging applications.

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Consider pulling-angle factor at hanging points when planning rigging system.

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Always use anindependent safety suspension system as a backup for each suspended loudspeaker.

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Do not usestraps for lifting purposes.

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Do not liftany loudspeaker system or other equipment over the head of people.

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• When assembling flying hardware it is advisable to use thread-locking compound to eyebolts and

other bolts in order to avoid any possibility of loosening.
It is important to inspect both rigging hardware and rigging parts on loudspeakers, and replace worn

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or damaged components immediately.

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