Martin Audio EM186 Manuel utilisateur

Martin Audio – EM SERIES

CONTENTS (ENGLISH) Page No

1 INTRODUCTION 2

2 UNPACKING 2

3 OVERVIEW 2

3.1 EM26 3

3.2 EM56 3

3.3 EM76 3

3.4 EM186 3

3.5 EM201 and EM251 3

4 SAFETY FIRST 4

4.1 Rigging and Suspension 4

5 AMPLIFICATION 4

6 CONNECTIONS 5

7 CABLE LENGTHS 5

8 SYSTEM CONFIGURATIONS 6

9 WARRANTY 6

10 TECHNICAL SPECIFICATIONS 7

MARTIN AUDIO

LONDON

The Martin Experience

CONTENTS

GUIDES

1 INTRODUCTION

Thank you for purchasing a Martin Audio EM Series system. The EM

Series is a range of powerful yet compact loudspeakers designed to suit

a variety of permanent installation applications. The trapezoid shape of

the enclosures allows them to be used singly or arrayed in multiples.

Specific uses include distributed foreground sound, theme bars,

nightclubs and audio-visual events.

2 UNPACKING

Each Martin Audio loudspeaker is built to the highest standard and

thoroughly inspected before it leaves the factory. After unpacking the

system, examine it carefully for any signs of transit damage and inform

your dealer if any such damage is found. It is suggested that you retain

the original packaging so that the system can be repacked at a future

date if necessary.

Please note that Martin Audio and its distributors cannot accept any

responsibility for damage to any returned product through the use of

non-approved packaging.

3 OVERVIEW

The EM Series products covered in this guide include the EM26, EM56,

EM76 and EM186 full-range systems and the EM201 and EM251 sub-bass

systems. Please note that the EM15 and EM150 are covered in a separate

User’s Guide. The EM26, EM56 and EM76 are 2-way systems with internal

crossover networks. The EM186 is a bi-amped 3-way system and the

EM201 and EM251 are dedicated sub-bass systems.

For optimum performance, it is recommended that EM Series loudspeakers

are used with EMX System Controllers – the EMX1A for the EM26/56/76

and the EMX2A for the EM186. The controllers can be switched between

full-range and sub-bass operation and contain limiter circuitry activated by

sense lines for loudspeaker protection. Please refer to the appropriate

controller user guide for detailed information on connections and correct

limiter settings for a particular EM Series set-up.

Martin Audio – EM SERIES

ENGLISH

This equipment conforms to the requirements of the

EMC Directive 89/336/EEC, amended by 92/31/EEC

and 93/68/EEC and 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

CONTENTS

GUIDES

3.1 EM26

The EM26 is a miniature high performance loudspeaker suited to a variety

of applications from sports bars to high level foreground systems. It is a

passive two-way system featuring an 8" (200mm) bass driver and a 1"

(25mm) ferrofluid cooled HF driver on a 70 x 50 horn.

3.2 EM56

The EM56 is an ultra-compact passive two-way system with a high output

capability for its small size. Featuring a 10" (250mm) bass driver and 1"

(25mm) compression driver on a 70 x 40 degree horn, it is particularly

useful in distributed sound and audio-visual appplications.

3.3 EM76

The EM76 is a powerful stand-alone system combining dynamic full-

frequency performance with exceptional smoothness. Designed to meet

the install requirement for a 12" (305mm) bass driver plus 1" (25mm)

compression driver combination, the EM76 is a passive 2-way system that

is ideal for most applications.

3.4 EM186

The EM186 is an innovative three-way system featuring a powerful 15"

(385mm) low frequency driver. Midrange is produced by a unique 6.5"

(160mm) mid horn developed to overcome the power and distortion

limitations of traditionally used large format compression drivers and high

frequencies are produced by a 1" (25mm) compression driver. Mid and HF

dispersion patterns are 65 x 40 degrees and the mid/high section is

rotatable to enable vertical or horizontal installation. The EM186 is

designed for bi-amplification at its 650Hz low/mid crossover point.

3.5 EM201 and EM251

Where an EM Series enclosure requires additional low frequency

enhancement, use of either the EM201 or EM251 will extend the power

bandwidth of the system to below 35Hz. The EM201 houses a single 18"

(450mm) driver whilst the EM251 utilises twin 15" (385mm) drivers in an

optimally tuned compact reflex enclosure.

NOTE:

Passive systems such as the EM26, EM56 and EM76 may be used without

a system controller provided recommended amplifier power is not exceeded

and care is taken to avoid amplifier clipping. Use of an optional EMX1A

controller with its system specific low frequency EQ and built in limiters will

result in improved bass response and system protection.

Martin Audio – EM SERIES

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CONTENTS

GUIDES

4 SAFETY FIRST

It is important that loudspeaker systems are used in a safe manner. Please

take some time to review the following points concerning safe use of EM

Series loudspeakers.

Professional loudspeakers are capable of producing extremely high sound

levels and should be used with care. Hearing loss is cumulative and can

result from levels above 90dB if people are exposed for a long period.

Never stand close to loudspeakers driven at high level.

4.1 Rigging and Suspension

WARNING: Suspending the system should only be done by qualified

personnel following safe rigging practices. Secure fixings to the

building structure are vital. Seek help from architects, structural

engineers or other specialists if in any doubt.

The EM26, EM56 and EM76 are provided with rear panel fixings for wall

brackets. The EM26, EM56, EM76 and EM186 are also fitted with

threaded inserts to allow the suspension of a single enclosure.

Never suspend one enclosure from another to form an array or cluster

using these fittings.

The common practice of using commercially available eye bolts for

suspension should only be undertaken with great caution. Eye bolts are

strongest along the thread axis. Angling the enclosures will result in an

angle pull and it is important to use eye bolts that are safe in these

circumstances. Only forged shoulder eye bolts should be considered and it

is important that the thread length is at least 30mm. A flat washer should

be inserted between the eyebolt and the enclosure. Formed eye bolts i.e.

those which are formed from a steel rod bent into an eye should be

avoided.

5 AMPLIFICATION

EM Series loudspeakers are designed to be used with professional power

amplifiers capable of producing the following power outputs into 4 ohms:

EM26 300-400W

EM56 300-400W

EM76 400-550W

EM186 400-550W

EM201 550-700W

EM251 550-700W

Care should be taken to avoid amplifier clipping. It is important to

understand that a low power amplifier driven into clipping is more likely to

damage a loudspeaker than a higher power amplifier used within its ratings.

This is because music signals have a high peak-to-average "crest" factor.

Martin Audio – EM SERIES

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CONTENTS

GUIDES

When an amplifier is severely overdriven, its output waveform is clipped (its

peaks are squared off) – reducing the crest factor. In extreme cases, the

waveform can approach that of a square wave. An amplifier is normally

capable of producing far more power under these conditions than its

undistorted rated power output.

The use of very high power amplifiers with outputs greater than those

recommended is discouraged.

Care should be taken to avoid switch-on surges, which can result in

momentary power peaks in excess of specified ratings. When powering up

a sound system it is important to switch on the amplifiers after the mixer

and control electronics have stabilised. When powering down the system,

reverse the sequence and switch off the amplifiers first.

6 CONNECTIONS

Each connector panel has a Neutrik Speakon NL4 connector wired as

follows:

NL4 Pin EM26/56/76/201/251 EM186

1- Input -ve Low -ve

1+ Input +ve Low +ve

2- Link -ve Mid/High -ve

2+ Link +ve Mid/High +ve

7 CABLE LENGTHS

When connecting loudspeaker systems to an amplifier, it is recommended

that the return resistance of the cable used is less than one tenth of the

nominal impedance of the system or systems in parallel. The table below

gives an indication of the maximum permissible cable runs for various

conductor cross-sectional areas.

Conductor CSA Maximum Cable Run

4 ohms 8 ohms 16 ohms

1.0mm211m 22m 44m

1.5mm217m 34m 68m

2.0mm222m 44m 88m

2.5mm229m 58m 116m

4.0mm244m 88m 176m

6.0mm266m 132m 264m

Martin Audio – EM SERIES

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CONTENTS

GUIDES

8 SYSTEM CONFIGURATIONS

The EM26, EM56, EM76 and EM186 may be used to cover the full-frequency

range – either distributed singly or arrayed in multiples. The EMX1A

controller provides appropriate limiting and low frequency equalisation for

full-frequency operation of the EM26, EM56 and EM76. The EM186 requires

an EMX2A controller.

Where additional low frequency output is required, an EM201 or EM251

sub-bass system driven from a separate amplifier fed from the sub-bass

output of the controller can be added. In this case the controller should be

switched from full-range to sub-bass operation by means of the recessed

switch on the front panel. The sound balance of the complete system can

be set up by using a screwdriver to adjust the trim controls accessible

through the controller front panel. Please refer to the EMX1A or EMX2A

User’s Guide for further information.

9 WARRANTY

Martin Audio EM Series products are warranted against manufacturing

defects in materials or craftsmanship over a period of 5 years from the date

of original purchase. During the warranty period Martin Audio will, at it's

discretion, either repair or replace products which prove to be defective

provided that

the product is returned in its original packaging, shipping prepaid, to an

authorised Martin Audio service agent or distributor.

Martin Audio Ltd. cannot be held responsible for defects caused by

unauthorised modifications, improper use, negligence, exposure to inclement

weather conditions, act of God or accident, or any use of this product that is

not in accordance with the instructions provided by Martin Audio.

Martin Audio is not liable for consequential damages.

This warranty is exclusive and no other warranty is expressed or implied.

This warranty does not affect your statutory rights.

Martin Audio – EM SERIES

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CONTENTS

GUIDES

10 TECHNICAL SPECIFICATIONS

EM26

TYPE Ultra compact, two-way passive

FREQUENCY RESPONSE 70Hz-18kHz ±3dB

RATED POWER 125W AES, 500W peak

SENSITIVITY 94dB

MAXIMUM SPL 114dB continuous, 120dB peak

RECOMMENDED AMPLIFIER 200-300W (into 4 ohms)

DISPERSION 70 degs horizontal x 50 degs vertical

NOMINAL IMPEDANCE 8 ohms

BASS 200mm (8")

HIGH FREQUENCY 25mm (1") driver, ferrofluid cooled

CROSSOVER 3kHz passive

ENCLOSURE 12 litres, vented

CONNECTOR 1 Neutrik Speakon NL4MPR

FITTINGS 4 x M6 inserts for Omnimount 75

6 x M8 inserts

DIMENSIONS (W) 278mm x (H) 391mm x (D) 264mm

(W) 10.9ins x (H) 15.4ins x (D) 10.4ins

WEIGHT 10kg (22lbs)

SHIPPING DIMENSIONS (W) 590mm x (H) 500mm x (D) 300mm

(Packed in pairs) (W) 23.2ins x (H) 19.7ins x (D) 11.8ins

SHIPPING WEIGHT 22kg (48.5lbs)

(Packed in pairs)

Martin Audio – EM SERIES

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CONTENTS

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EM56

TYPE Compact, two-way passive trapezoid

FREQUENCY RESPONSE 75Hz-18kHz ±3dB

RATED POWER 150W AES, 600W peak

SENSITIVITY 97dB

MAXIMUM SPL 117dB continuous, 123dB peak

RECOMMENDED AMPLIFIER 300-400W (into 4 ohms)

DISPERSION (HxV) 70 degs horizontal x 40 degs vertical

NOMINAL IMPEDANCE 8 ohms

BASS 250mm (10")

HIGH FREQUENCY 25mm (1") driver, ferrofluid cooled

CROSSOVER 2kHz passive

ENCLOSURE 22 litres, vented

CONNECTOR 1 x Neutrik Speakon NL4MPR

FITTINGS 4 x M8 inserts for Omnimount 100

10 x M8 inserts, 1 x pole mounting socket

DIMENSIONS (W) 335mm x (H) 487mm x (D) 325mm

(W) 13.2ins x (H) 19.2ins x (D) 12.8ins

WEIGHT 14.5kg (32lbs)

SHIPPING DIMENSIONS (W) 400mm x (H) 540mm x (D) 380mm

(W) 15.7ins x (H) 21.3ins x (D) 15ins

SHIPPING WEIGHT 16kg (35.3lbs)

Martin Audio – EM SERIES

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CONTENTS

GUIDES

EM76

TYPE Compact, two-way passive trapezoid

FREQUENCY RESPONSE 60Hz-18kHz ±3dB

RATED POWER 200W AES, 800W peak

SENSITIVITY 98dB

MAXIMUM SPL 120dB continuous, 126dB peak

RECOMMENDED AMPLIFIER 400-550W (into 4 ohms)

DISPERSION 70 degs vertical x 40 degs horizontal

NOMINAL IMPEDANCE 8 ohms

BASS 300mm (12")

HIGH FREQUENCY 25mm (1") exit compression driver

CROSSOVER 1.5kHz passive

ENCLOSURE 40 litres, vented

CONNECTOR 1 x Neutrik Speakon NL4MPR

FITTINGS 4 x M8 inserts for Omnimount 100

10 x M8 inserts, 1 x pole mounting socket

DIMENSIONS (W) 365mm x (H) 554mm x (D) 364mm

(W) 14.4ins x (H) 21.8ins x (D) 14.3ins

WEIGHT 22kg (48lbs)

SHIPPING DIMENSIONS (W) 440mm x (H) 610mm x (D) 420mm

(W) 17.3ins x (H) 24ins x (D) 16.5ins

SHIPPING WEIGHT 23.5kg (51.8lbs)

Martin Audio – EM SERIES

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CONTENTS

GUIDES

EM186

TYPE Compact, three-way trapezoid

FREQUENCY RESPONSE 55Hz-18kHz ±3dB

RATED POWER LF: 350W AES, 1400W peak

MF/HF: 150W AES, 600W peak

SENSITIVITY LF: 100dB MF/HF: 104dB

MAXIMUM SPL 124dB continuous, 130dB peak

RECOMMENDED AMPLIFIER 400-550W (into 4 ohms)

DISPERSION 65 degs horizontal x 40 degs vertical

NOMINAL IMPEDANCE LF: 8 ohms MF/HF: 16 ohms

BASS/MID 380mm (15")/165mm (6.5")

HIGH FREQUENCY 25mm (1") exit compression driver

CROSSOVER 650Hz active 3.3kHz passive

ENCLOSURE 80 litres, vented

CONNECTOR 1 x Neutrik Speakon NL4MPR

FITTINGS 12 x M8 inserts

DIMENSIONS (W) 442mm x (H) 827mm x (D) 430mm

(W) 17.4ins x (H) 32.5ins x (D) 16.9ins

WEIGHT 36kg (79lbs)

SHIPPING DIMENSIONS (W) 500mm x (H) 920mm x (D) 480mm

(W) 19.7ins x (H) 36.2ins x (D) 18.9ins

SHIPPING WEIGHT 38.5kg (84.9lbs)

Martin Audio – EM SERIES

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