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

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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

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

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

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

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

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

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

“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.

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

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.

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

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

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

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.

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.

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

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.

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

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.

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.

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

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

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

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

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

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

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.

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.

•

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

•

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

•

Do not usestraps for lifting purposes.

•

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

•

• 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

•

or damaged components immediately.

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Wiring scheme for balanced Input/Parallel-Out XLR Audio Connectors (male / female)

Signal “ ”, out-of-phase or “COLD” Signal “ ”, in-phase or “HOT” Shield wire,

Example wiring scheme when only unbalanced signal source is available

(different wiring scheme could be suggested depending on the specific situation)

XLR Input

Connector

MB Loudspeaker

Signal out-of-phase connected to SLEEVE Signal in-phase connected to TIP Shield wire,

Unbalanced signal source

Sleeve

Tip

Not connected

Wiring scheme for

PowerCon Insertion Neutrik PowerCon (internal side view)

L (Live)

(Ground)

Removal

N (Neutral)

Attached to this manual is part of manufacturer documentation for Neutrik PowerCon, where you can find mechanical and electrical details how to assemble this connector.

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Connectors Panel

(C.onnections and Controls)

The connectors are on the rear or side panel of the Loudspeakers. The layout of connectors panel is slightly different depending on MB Loudspeaker’s model. Please refer to specific layout for model(s) you are using, which you can find on page 7.

Mains AC Input Supply Connector

[1]

MB Series Loudspeakers

use a PowerCon 3-pole AC mains connector for their power inlet (see Figure on page 5). It is important to determine and use adequate wire gauge for mains cable considering the voltage drop that occurs across the cable’s resistance. This is a functionof the gaugeand the length of the conductors, the currentdrawn by theload and the startingAC mains voltage.

Internal fuse is provided on mains circuit, which will only blow in the event of major fault condition. In case you suspect it is blown, refer to your dealer for service arrangement. Do nottry to operate the unit.

Grounding-Shielding circuit is organized in the way that signal ground (XRL Pin1) and mains ground are permanently connected together at one single point (internally). This reduces the risk of hum due to ground loops whenbalanced audio equipments are properly connected in a chain.

Mains AC Output Supply Connector

[2]

This connector provides

output for mains line to link other loudspeakers. The number of loudspeakers linked to each other must not exceed the main line current capcity, and cable used should have adequate cross section. Anyway the total current of the chain, including all systems connected, must not exceed the current rate of a single PowerCon (20A maximum).

Power LED

[3]

(blue) lights when is connected to mains supply and internal DC is

MB Loudspeaker

available.

XLR Input Connectors

[4]

accept input audio signal. Nominal input level is +4dBu. 12K

impedance electronically balanced. See Figure on page 5 for wiring scheme.

SubWoofer models MB 12.0 and MB 18.0 are provided with stereo input (Left and Right). Signals are internally mixed to mono. This is usefull to setup systems consisting of stereo Full Range section and mono SubWoofer section. Note that Parallel Out (Left and Right) provides anyway Full Range stereo signal to drive other systems.

When only one input is used on SubWoofer (e.g. Left input), then connecting Parallel Out Left to Right Input drives +6dB signal into the SubWoofer. In general it is always recommended to drive both Left and Right inputs on MB SubWoofers with identical signals, instead of driving one single input with +6dB higher signal.

XLR Parallel Out Connectors

[5]

are

intended for the purpose of daisy-chaining multiple powered Loudspeakers together on a common signal feed. Input and Parallel Out connectors are hard-wired in parallel. Take care to check that the signal source is capable of driving the total impedance resulting when paralleling the group of powered loudspeakers. As a practical rule use the following formula for MB Loudspeakers:

Maximum number ofparallel Powered MB Loudspeakers =

Operation Mode Switch

[6]

12.000 [ ]

(Source Impedance [ ] x 10)

Models MB 8.1, MB 12.1, MB 15.2, MB 12.2W, MB MAV-2W

This switch configures internal processor to drive the system in mode or mode ().

Full-Range Crossover

In Full Range mode internal processor provides extended low frequency responce within the widest

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MB 8.1, MB 12.1, MB 15.2, MB 12.2W, MB MAV-2W Connectors Panel (example for MB 12.2W)

MB 18.0, MB 12.0 Connectors Panel (example for MB 12.0)

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Safe dynamic range. In HP mode internal processor provides HP crossover function based on acoustical responce. This perfectly matches the proper MB SubWoofer model.

Model MB 18.0 and MB 12.0

This switch configures internal processor to drive SubWoofer in mode based on Riley 4th-order The choice of Crossover Frequency depends on which MB Full Range model is used in combination with MB 18.0or MB 12.

The following table provides a general guideline how to combine Full Range and Subwoofer models: MB 8.1 (HP mode) - MB12.0 (100Hz mode): crossover frequency 100Hz. MB 12.1 (HP mode) - MB 18.0 (100Hz mode): crossover frequency 100Hz. MB 15.2 (HP mode) - MB 18.0 (80Hz mode): crossover frequency 80Hz.

acoustical responce at or .

100Hz 80Hz

Crossover

Linkwitz-Riley 4th-order

Linkwitz-

Operation Mode Switch (General Consideration).

Loudspeakers (Full Range section) are used without SubWoofer.However HPmode may be also useful as System-LowCut in specific situations. This results in acoustical responce shaped as 4th-order HP filter tunded at stated frequency (100Hz or 80Hz, depending on the model). On the other side Full Range mode could be usefully operated by experienced engineers even when SubWoofer is used, especially on MB 15.2, after phase relations amoung the different sources has been properly analysed and tuned.

Operating Sequence

Make sure that all mains cables are disconnected in the reinforcement system.

Connect all audio cables respecting wiring schemes provided for operated equipment.

Provide proper configuration for Operation Mode Switches on all of Loudspeakers.

Make sure that no audio signal (or very low level) is at Loudspeakers input, to avoid transients or unexpected loud sound.

Switch on first other units (mixer, outboard effects, etc), then connect MB Loudspeakers to mains, otherwise cracking noise could be expected which could potentially damage Loudspeakers.

After 5 seconds mute, the system is ready to work

Switch off sequence has to be reversed: first MB Loudspekaer, then other units.

Follow these steps:

Full Range mode should be chosen when

Linkwitz-Riley

Important Operating Notes

For most applications driving MB SubWoofers and MB Loudspeakers (Full Range section) with the same signal provides adequate balance. Driving SubWoofers with two input signals (Left and Right inputs) increases the level (up to +6dB when signals are identical and in-phase). When a specific different balance is needed, then an externallevel control is advised(e.g. Mono or Matrixoutput from FOH EQ orMixing Consolle).

Each transducer inside MB Loudspeakers is provided with independent time-shaped limiter system that reduces the risk of possible failures due to driver over-excursion and voice coil over-temperature. This is achieved at the cost of minimum audible dynamics compression. However a continuously increasing input level has to be avoided, as considerable and audible loss of dynamics may be expected. In this situation although protected by the limiter, the components experience a considerable loading (due to reduced crest factor of compressed audio program) which can significantly shorten their lifespan. The sound engineer should recognize, when input level is in the mentioned range or higher, that the audio program from the loudspeaker is highly compressed and turn down the level of input signa this situation additional loudspeaker systems should be used, to provide the desired SPL.

l. In

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MB Loudspeakers are designed for audio applications. Full range audioprogram signal is expected to

be used as input. Although time-shaped limiter systems are implemented, using high energy bandlimited signal, or exteme equalization (boost) on a full range signal may damage this equipment. Overload and clipping must be avoided inside all of the equipments in the audio signal chain, since

there is no way to prevent distorted sound or possible damage to the loudspeakers when audio signal at their input is already distorted. Digital converting/processing timeinside MB Loudspeakersresults in 1,5ms (milliseconds) delay for

all of MB models, referred to input signal. Use of different loudspeaker systems (provided with analogue, digital, or no processing) in combination with MB Loudspeakers should be carefully evaluated. Delay difference should be compensated, if needed, to avoid destructive acoustical interference.

Thermal protection operates when heatsink (internal) temperature reaches 85°C. As a consequence the amplifiers will shutdown, and automatically restore when the temperature decreases below mentioned threshold. MB Loudspeakers

lower temperatures could cause the system to shutdown or result in components failure. Take care to avoid direct intense sunlight on heatsink. This could raise the temperature of heatsink and force the amplifiers to protection-mode to avoid permanent damage. If MB Loudspeakers are used in horizontal position, cooling efficiency of the heatsink is reduced. In

this situation take care to evaluate ambient temperature and SPL level you need, to predict if the margin is still reasonable before thermal In case one of the protection systems is engaged and doesn’t automatically restore when the cause is

removed, you can restore it manually disconnecting mains and reconnecting after 15 seconds. In order to avoid possible dangerous short circuits when touching other equipments or cables, please

consider that connectors panel and heatsink are at Ground level.

are designed to be used within ambient temperature range 0°C - 45°C. Higher or

protection will shutdown the amplifiers.

Visit the web site www.mbaudiosystems.com for more information about MB Audiosystems arrays configuration, performance and fine tuning. Refer to information about suspension hardware setup, and follow all safety recommendations. Please do not hesitate to contact your dealer if you have any doubt or question about MB Series installation, specs or operations.

The information presented in this manual is, to the best of our knowledge, correct. The manufacturer will however not be held responsible for the consequences of any error or omission. policy of continued improvement, the manufacturer reserves the right to alter specifications without further notice. Rights for names and trade-marks quoted in this manual belong to respective owners.

MB Suspension Hardware Manual for important

In keeping with a

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Ce statement of conformity

The manufacturer HOF Sales B.V. - The Netherlands, declares that the products MB8.1, MB12.1, MB15.2, MB12.0, MB18.0 , MB 12.2W, MB MAV-2W, to which this statement refers, conforms to the following standards or other type of regulatory documents: EN 60065, EN 55103-1,EN 55103-2 with reference to EU directives 73/23 and 89/336. Haren, 01/03/2009

The form of this statement conforms to EN 45014 specifications.

marking is on the rear panel of the product, in the area close to power supply connector.

Manufacturer: - Felland Noord, 3 - 9753 TB - Haren Products have a warranty period of 36 months, starting from delivery date. Electronic components (analogue modules, semiconductors, capacitors, etc.), digital modules and acoustical transducers are excluded from this warranty; general manufacturer conditions and warranty policy apply for these components. Warranty only applies when the final payment has been received by the dealer or the manufacturer. Warranty will be valid only if this statement, together with the original invoice, will be shown to an authorized service centre or to the manufacturer. If the product does fail during the warranty period, which can be related to components or mounting defects to be decided by the authorized service centre or manufacturer, all costs regarding labour and replacement parts will be at manufacturer expense. Warranty does not applyif the serial number(S.N.) is deleted or modified on the product. Warranty is not valid if the product has been damaged by negligence or incompetence of the customer or user, for accident, or if all indications, use-limits and safety warnings explaned in the user manual (provided with the product) have not been respected. Warranty does not apply if any unauthorized modification has been made to the product, without prior written notice from the manufacturer. The manufacturer is not held responsible for any inconvenience caused during the time the product cannot be used. No refund will be made for cost incurred by repairs and/or replacement parts made by nonauthorized service centres. In all cases the customer will send the product at own risk and costs to service centre or manufacturer. Only warranty stated by the manufacturer apply in all circumstances.

HOF Sales B.V. - The Netherlands.

- Felland Noord, 3 - 9753 TB - Haren

Responsible for HOF Sales B.V.

Auke Meijer

Warranty Statement

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AUDIOSYSTEMS

Product Range

Performance & Physical Data MB 8.1 MB 12.1 MB 15.2 MB12.2W MB 12.0 MB18.0 MB MAV-2W

Frequency Response 66Hz - 18KHz 54Hz - 18,5KHz 38Hz - 18,5KHz 65Hz - 18KHz 42Hz - 90Hz 32Hz - 90Hz 50Hz - 18,5KHz Operating Frequency Range 59Hz - 19KHz 48Hz - 19,5KHz 33Hz - 19,5KHz 60Hz - 18KHz 35Hz - 100Hz 29Hz - 100Hz 47Hz - 19KHz Maximum SPL 127dB SPL 131,6dB SPL 134,6dB SPL 130,2dB SPL 127,8dB SPL 134,3dB SPL 136,9dB SPL Coverage Angle 100° (conical) 85° x 40° 65° x 40° 80° (conical) Omni Omni 75° x 55°

(1)

(2)

(3)

(4)

Coverage Angle Range 1,3 - 14KHz 1,1 - 13KHz. 0,7 - 13KHz 1,5 - 14KHz 35 - 90Hz 29 - 80Hz 950Hz - 13KHz Crossover Frequency 1750Hz nominal 1350Hz nominal 650Hz nominal 850Hz nominal 100Hz nominal 100Hz nominal 860Hz nominal Transducers LF

8-in V-Reflex 12-in optimally 15-in V-Reflex 12-in optimally 12-in optimally 18-in optimally 15-in optimally Technology provides vented cone driver Technology provides vented cone driver vented cone driver vented cone driver vented cone driver maximum LF output maximum LF output

Transducers HF 1-in exit, coaxial 1-in exit driver 2-in exit driver 2-in exit driver - - - - 1,4-in exit driver

1,7-in diaphragm 1,7-in diaphragm 3-in diaphragm 3-in diaphragm 3-in diaphragm

horn loading CD horn loading CD horn loading horn loading CD horn loading Balanced Input Section Sensitivity +4dBu Connectors Female XLR, Male XLR loop out Input Impedance 12K balanced

Amplifiers Type (convection cooled) High Efficiency High Efficiency High Efficiency High Efficiency High Efficiency High Efficiency High Efficiency

Burst capability 2 x 300W 2 x 610W 3 x 610W 2 x 610W 880W 1860W 2 x 1200W

(5)

Digital Amplifier Digital Amplifier Digital Amplifier Digital Amplifier Digital Amplifier Digital Amplifier Digital Amplifier

THD, DIM, SMPTE: < 0,05% Protections

Over-temperature power limiting, Thermal shutdown, Short-circuit/Overload output protection, Soft Clip limiter DSP on board 48KHz AD/DA, 24bit. Signal routing, crossovers, system-Eq, offset delay, time-shaped limiters Operation Mode Switch Mains Connector PowerCon AC-input connector, link PowerCon Out Mains AC Power Nominal 230VAC(195-240) - 50Hz

Full Range / High Pass (100Hz LR24) FR / HP (80Hz LR24) FR/HP (100Hz LR24) 80Hz / 100Hz LP (LR24) FR / HP (90Hz LR24)

(6)

Current Requirement 2A 3A 4A 3A 3A 4A 4A Dimensions (HxWxD)cm 34,5 x 26,5 x 26,5 55x36,5x40 73x52x43 41x51x28 44x36x48 85,5x50x52 43,5x74x31 Weight 11 Kg 25 Kg 45,3Kg 26 Kg 24,5Kg 45 Kg 25,3 Kg Cabinet baltic birch multiply 12mm 18mm 18mm 18mm 18mm 18mm 18mm Finish Black scratch resistant waterborne coating system. Protection Grill Perforated steel grill, powder coated. 35mm pole mount Hanging Points

- - On bottom panel - - On bottom panel On top panel - -

2 x M10, on top 5 x M10, on top, 5 x M10, on top, -- -- -- --

and bottom panel b b

ottom and rear panel ottom and rear panel

On top panel

Notes

Frequency Response ( 3dB) measured on-axis in half-space loading condition, 1/36 octave frequency resolution. Half space condition occurs when floor, rear or side walls are close to

(1)

loudspeaker, and affect low frequencies loading.

Range limits stated at - 6dB.

(2)

Maximum Full Range SPL measured in half-space loading condition, referred to 1m measurement distance, with pink noise (6dB crest factor).

(3)

- 6dB points.

(4)

Amplifier capability with pink noise (6dB crest factor).

(5)

Performance Data measured with 230VAC.

(6)

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