EM Acoustics MSE-159 Manuale utente

MSE-159/MSE-156 User Manual

www.emacoustics.co.uk

MSE-159/MSE-156 Fullrange Passive Loudspeakers

User Manual –v1.0

EM Acoustics Loudspeakers

Building 74, Dunsfold Park

Cranleigh, Surrey

GU6 8TB, UK

Phone +44 (0) 1483 266520

Fax +44 (0) 1483 275619

www.emacoustics.co.uk

_________________________________________________________________________________________

MSE-159/MSE-156 User Manual

www.emacoustics.co.uk

CONTENTS

Introduction

Thank you ...……………………………………………………………………………………………………………………………. 3

Unpacking ……………………………………………………………………………………..……………………………………….. 3

Declaration of Conformity …………………….…………………………………………………………………………………… 3

Product Overview

MSE-159/MSE-156 passive two-way enclosures…………………………………………………………………….……… 4

System Set-up

Safety Considerations………………………………………………………………………………………………………………… 5

Cabling & Amplifier selection ……………………………………………………………………………………………………… 6

Protective DSP Settings ................................................................................................................. 7

Mounting & Rigging Options

Rigging Hardware & Accessories ………………………………………………………………………………………………… 8

Permanent Installations …………………………………………………………………………………………………………….. 8

Flying hardware Use........……………………………….…………………………………………………………………………. 9

Maintenance

MSE-159 Drive Unit Service ……………………………………………………………………………………………………….11

Warranty ……………………………………………………………………………………………………………………………………………. 12

Appendix A –Technical Specifications …………………………………………………………………………………………………… 13

MSE-159/MSE-156 User Manual

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INTRODUCTION

Thank you

Thank you for purchasing a product from the acclaimed EMS Series from EM Acoustics. The EMS Series products

have been carefully designed and rigorously tested to ensure years of flawless operation and unprecedented sonic

quality. Flexibility is the key factor with EMS products, and consequently they are at home within a wide variety of

applications from live and portable applications, through to cafes, bars, nightclubs, theatres and conference

centres.

Please ensure that you read this manual carefully before use, and that you keep it to hand should you need it for

further reference. Furthermore, should you have any difficulties please do not hesitate in contacting your EM

Acoustics dealer, or email info@emacoustics.co.uk for further assistance.

Unpacking

Every EM Acoustics product is built to the highest standard and thoroughly tested before it leaves our factory.

After unpacking your loudspeaker, please inspect it carefully for any signs of transit damage. If such damage is

found, please notify the carrier at once to instigate a claim. It is suggested that you retain all packaging for future

re-shipment.

DECLARATION OF CONFORMITY

The products contained within this manual conform to the requirements of the EMC

Directive 89/336/EEC, amended by 92/31/EEC and to the requirements of the Low

Voltage Directive 73/23/EEC amended by 93/68/EEC.

Standards Applied: EMC Emission EN55103-1:1996

Immunity EN55103-2:1996

Electrical Safety EN60065:1993

RECYCLING

This product and its packaging constitute the applicable product according to the WEEE directive.

Please ensure that at the end of the working life of this product, it is disposed of sensibly in

accordance with local and national recycling regulations. The packaging supplied with this product

is recyclable. Please retain all packaging, however if disposing of this packaging please ensure

that you comply with local recycling regulations. These products also all comply to the RoHS

Directive 2002/95/EC.

MSE-159/MSE-156 User Manual

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PRODUCT OVERVIEW

MSE-159/MSE-156 fullrange passive loudspeakers

The MSE-159 is a compact, versatile, passive loudspeaker product designed for a wide variety professional sound

reinforcement applications. It features a high-power 15” (381mm) neodymium LF drive unit in a reflex enclosure,

and a 4” diaphragm, 1.4” (36mm) exit neodymium high frequency compression drive unit coupled to a 90° x 60°

rotatable waveguide. These components are matched by an internal passive crossover network for unprecedented

sonic quality from a completely passive enclosure. The MSE-156 is identical in every respect, excluding that the

rotatable waveguide has a 60° x 40° coverage pattern. Sonic performance and character is incredibly consistent

between the two models, allowing easy mixing of the different products within a system.

Due to its discreet size and appearance, the MSE-159 and MSE-156 can be used in a wide variety of professional

audio applications ranging from corporate and theatre use up to medium scale front of house or in-fill/out-fill for

much larger systems. The primary intention for the MSE-159 and MSE-156 were primary loudspeakers for

theatrical sound reinforcement.

As with all EM Acoustics full-range products, no active controller or programmed EQ is required for correct

operation. For demanding applications, a 50Hz, 24dB/octave high pass filter is recommended to increase drive unit

headroom however this is not essential for normal operation –please see page 7 for further information.

The MSE-159 and MSE-156 are supplied as standard in black or white, and is fitted with two Neutrik SpeakONTM

NLT4MP connectors. Custom colours and specific connectors can also be supplied if required –please contact your

local EM Acoustics representative for more details.

To rotate the HF waveguide:

1. Remove the front grille as described in the Maintenance section on Page 10 of this manual.

2. Using a 4mm Allen key, remove the eight countersunk bolts retaining the HF waveguide in place.

3. Lift the waveguide up and rotate to the desired position –the label on the waveguide shows the dispersion

orientation.

4. Reinstate the socket-head bolts and retighten. Avoid over-tightening as this may crack the waveguide.

5. Reinstate the grille as described in the Maintenance section on Page 11.

MSE-159/MSE-156 User Manual

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SYSTEM SET-UP

Safety Considerations

Loudspeaker systems are potentially dangerous objects if used incorrectly. Please ensure that you read this

section fully, and contact EM Acoustics or your local dealer should you be in any doubt over correct operation

procedures.

Professional loudspeaker systems are capable of producing damage-inducing sound pressure levels, and hence

care should be taken when setting your system up, particularly when it comes to loudspeaker placement within a

venue. Damage to the ear can result from levels above 90dB under prolonged exposure.

Stand Mounting

The MSE-159 and MSE-156 can be mounted from a loudspeaker stand using the integral polemount adapter for a

standard 35mm loudspeaker stand. When mounting in this way, please consider the following:

Ensure your stand height is locked off and the tripod legs are positioned so as to be stable.

Check the weight loading of your stands before attempting to mount the loudspeaker.

Do not stack a second loudspeaker on top of the stand-mounted one.

Ensure cables are run so as to leave enough slack to enable neat wiring, and thus reduce the risk of the

speaker being pulled over. Loose cables should be covered or taped down wherever possible to reduce trip

hazards.

If stands are being used outdoors, it may be necessary to add ballast to the base of the stand to prevent it

toppling over.

When using poles on top of subwoofer systems, please observe similar precautions.

Ground Stacking

Ensure that the floor or stage surface can withstand the weight of the system.

Wherever possible, avoid high stacks and use ratchet straps to secure loudspeakers together. Please also

remember that vibrations from subwoofer systems can shake other loudspeakers out of place, which may

present a toppling hazard. The use of ratchet straps and non-slip material is recommended to prevent this.

Rigging and Suspension

There are a variety of different methods for suspending your MSE-19 enclosures –please see the detailed section

on Page 8 for further information.

WARNING: The overhead suspension of loudspeakers is a very serious issue with potentially lethal

consequences should anything go wrong. Rigging should only be carried out by experienced

MSE-159/MSE-156 User Manual

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personnel following safe working practice. Should you be in any doubt whatsoever, please contact

your local dealer who will be able to refer you to a suitable rigging company.

Cabling and Amplifier Selection

The MSE-159 and MSE-156 are designed to be used with professional power amplifiers providing the following

power outputs:

MSE-159/MSE-156 1500W/channel into eight ohms

2 x MSE-159/MSE-156 3000W/channel into four ohms

It is good practice to use an amplifier equal to the program power rating of the loudspeaker –so as to retain

sufficient headroom and good dynamic range. Care should be taken during operation to avoid amplifier clipping,

and it is recommended that suitable limiters are applied in order to keep amplifier channels clear from clipping –as

this can cause serious damage to your loudspeakers. If in doubt, please contact your dealer who will be happy to

assist you in correct amplifier choice and setup.

Cabling

The MSE-159 and MSE-156 are supplied as standard with Neutrik SpeakONTM NLT4MP connectors, wired pin 1+/1-.

It is recommended that the resistance of your cable is less than one tenth of the nominal system impedance.

Given below are the recommended maximum cable lengths for different cross-sections and impedances.

Conductor Cross Sectional Area Maximum Recommended Cable Length

4 ohms 8 ohms 16 ohms

1.0mm211m 22m 44m

1.5mm2 17m 34m 68m

2.0mm222m 44m 88m

2.5mm229m 58m 116m

4.0mm244m 88m 176m

6.0mm266m 132m 264m

Pins 2+/2- on the SpeakONTM connectors are wired together to allow link-through with 4-core cables.

A small power amplifier working too hard is more likely to damage a loudspeaker than a large power amplifier

working within its operating range!

MSE-159/MSE-156 User Manual

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Protective DSP Settings

The MSE-159 and MSE-156 require no DSP program to function correctly. However, excessive low frequency

information will cause the LF drive unit’s excursion to increase, which can result in damage to your loudspeaker.

The higher you raise the high pass filter on an MSE-159, the more headroom and overall sound pressure level

output there is available. For most medium-to-high level applications, we would recommend a minimum of a 50Hz

high pass filter with a 24dB/octave slope to sufficiently protect the loudspeaker. For higher SPL applications, we

would recommend raising this filter –we would stress that the higher the filter, the safer the loudspeaker will be.

If you are in any doubt over suitable settings for your MSE-159, please don’t hesitate to contact EM Acoustics or

your local dealer for support and advice.

MSE-159/MSE-156 User Manual

www.emacoustics.co.uk

MOUNTING & RIGGING OPTIONS

Rigging Hardware & Accessories

The MSE-159 and MSE-156 have three options for mounting and suspension, both for temporary use and

permanent fixed installation.

The MSE-159 and MSE-156 are fitted with bespoke flying plates top & bottom of the enclosure to enable

suspension in a variety of ways. Simple suspension is available using M10 forged shoulder eyebolts (minimum

thread length 20mm) in the M10 threaded holes in the flying plates. These M10 points can also be used as

secondary safety points with M10 eyebolts.

The most common method for suspension uses the keyhole cutouts in the top & bottom flying plates. Machined

bosses on the optional flying hardware mate with these keyhole plates, allowing extremely swift attachment of

flying hardware in a touring environment. ¼” ball-lock pins secure the optional flying hardware into the flying

plates.

The MSE-159 and MSE-156 also has an M8 threaded fixing on the rear for use as a pull-back point or for

attachment of a secondary safety point.

With any suspension method, a second anchor point should be used as a safety.

Under no circumstances should the mounting points of one enclosure be used to suspend another

enclosure below it. EM Acoustics are in no way responsible for the failure of incorrectly rigged

systems. This information relates specifically to the rigging techniques for the MSE-159/MSE-156

enclosure only. If you are in any doubt about safe practices for rigging loudspeakers, please contact

your local EM Acoustics dealer who will be able to advise you.

Permanent Installations

Any installation (permanent or temporary) must be securely attached to the structure of the building using chain,

steel wire or web straps that are certified and load rated for the loudspeaker system. Consideration must be taken

when determining the loading on the structure to include loudspeakers and rigging hardware, and the appropriate

safety factor can then be decided upon. If you are in any doubt whatsoever, please contact your EM

Acoustics dealer who will be able to refer you to an experienced rigging company. A reputable rigging organisation

should also be able to advise on legislation regarding safety factors for suspended systems of this type.

MSE-159/MSE-156 User Manual

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Safety Considerations

When utilising any suspension method, a secondary safety must be used. For any suspension method, fit an M8

eyebolt to any of the rigging points. A safety steel can then be attached to this and connected to your safety

point. If you are in any doubt whatsoever about how to safely suspend your loudspeakers, do not

hesitate to contact your EM Acoustics representative who will be able to refer you to a qualified

rigging company for advice.

Attachment of the FC-159v vertical flying cradle

The FC-159v vertical flying cradle is intended particularly for touring

purposes, hence the extremely quick attachment method.

To attach the cradle, first release the two ball-lock pins from the coffin

plate on the cradle. Position the cradle over the top or bottom of the

loudspeaker (it can be flown either way up) and insert the bosses on

the bottom of the cradle’s coffin-shaped plate into the keyholes on the

enclosure’s flying plate. Slide the cradle to the rear of the enclosure

until the two ¼” diameter locking-pin holes line up. Insert the two

ball-lock pins into the holes to lock the cradle in place. IMPORTANT:

DO NOT ATTEMPT TO LIFT THE LOUDSPEAKER WITHOUT

BOTH BALL-LOCK PINS IN PLACE. The point on the top of the

flying cradle can be used for permanent installations or to secure a

hook clamp. Ensure that an eyebolt is secured to the rear point on

the MSE-159/MSE-156 (M8 at the rear) or one of the top points (M10 on top or bottom) to use as a secondary

safety. To set the angle of the loudspeaker, there are standard clamping levers on each side as a primary system

however as a secondary, and to act as a repeatable method for flying, the holes and ball-lock pins allow quick and

easy angle setting in 5-degree increments.

As shown in the diagram

opposite, as you rotate the

inner yoke different holes

will be available to secure

with the pins. Select the

desired angle, and lock in

place with the attached ball-

lock pin. To give further

explanation, Holes A-D are

used for down-tilt and holes

MSE-159/MSE-156 User Manual

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E-H are used for up-tilt. Hole A is used for 0-degree angle, and also for multiples of 20 degrees above this (20, 40,

60, 80 degree down-angle). Hole B is used for 10 degrees, and multiples of 20 degrees above this (10, 30, 50, 70,

90 degree down angle). Similarly, Hole C is used for 5 degrees and multiples of 20 degrees above this (5, 25, 45,

65, 85) and Hole D is used for 15 degrees and multiples of 20 degrees above (15, 35, 55, 75). Holes E-H apply in

a similar way for up-tilt.

Attachment of the VFA-159 variable flying bracket

To attach the bracket, first release the two ball-lock pins from

the base of the bracket. Position the bracket over the top or

bottom of the loudspeaker (it can be flown either way up) and

insert the bosses on the bottom of the bracket into the keyholes

on the enclosure’s flying plate. Slide the bracket to the rear of

the enclosure until the two ¼” diameter locking-pin holes line

up. Insert the two ball-lock pins into the holes to lock the

bracket in place. IMPORTANT: DO NOT ATTEMPT TO LIFT

THE LOUDSPEAKER WITHOUT BOTH BALL-LOCK PINS

IN PLACE. Finally, attach a hook-clamp to the sliding mounting

point and secure the mounting point bolt through the main

section of the VFA-159 bracket.

The VFA-159 bracket works on the centre of gravity of the MSE-159. The lone hole in the centre of the VFA

bracket will mean the MSE-159 enclosure will hang level. Moving the pickup point to the rear of the enclosure will

add down-tilt, and moving to the front of the enclosure will apply up-tilt. Each notch represents 5-degrees of

angle, so by taking the weight of the loudspeaker the angle can easily be changed. The VFA-159 will allow a

maximum of 25 degrees of up-tilt and 30 degrees of down-tilt. For more extreme down-tilt angles, select the

rearmost notch and use the M8 point on the rear of the enclosure as a pull-back.

Ensure that an eyebolt is secured to the rear point on the MSE-159/MSE-156 (M8 at the rear) or one of the top

points (M10 on top or bottom) to use as a secondary safety.

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