Marquis M G 1 9 3 2, M G 1 9 1 8 S, M G1915 M, M G 1 9 2 8, M G 1928 - W H User Manual

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Page 1

User’s Guide

MARQUIS GALAXY

MG SERIES

M G 1 932

M G 191 8 S

M G1915M

MG192 8

M G 1928- W H

M G1915 S

M G - A F

M G-SM A F

Page 2

Page 3

CONTENTS

10. Use only with a cart, stand, bracket, or table specified by the manufacturer or sold with the apparatus. When a cart is used, use caution when moving the cart / apparatus combination to avoid injury from tip-over.

11. Refer all servicing to qualified service personnel. Servicing is required when an apparatus has been damaged in any way, such as power-cord or plug is damaged, liquid has been spilled, or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

12. To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

13. Hearing damage, prolonged exposure to excessive SPL, the loudspeaker is easily capable of generating sound pressure levels (SPL) sufficient to cause permanent hearing damage to performers, production crew and audience members. Caution should be taken to avoid prolonged exposuro SPL in excess of 90 dB.

IMPORTANT SAFETY INSTRUCTIONS

The MG Series loudspeakers covered by this manual are not intended for fixed installation in outdoor or high moisture environments. Moisture can damage the speaker cone and surround and cause corrosion of electrical contacts and metal parts. Avoid exposing the speakers to direct moisture. Keep speakers out of extended or intense direct sunlight. The driver suspension will prematurely dry out and finished surfaces may be degraded by long-term exposure to intense ultra-violet (UV) light.

The MG Series speakers can generate considerable energy. When placed on a slippery surface such as polished wood or linoleum, the speaker may move due to its acoustical energy output. Precautions should be taken to assure that the speaker does not fall off a stage or table on which it is placed.

PATENTS

MG series products are manufactured and sold under U.S. patents 5,748,760; 6,112,847; 6,394,223; 6,847,726; 6,774,510; D483,743; 6,768,806; and D483,744.

4MG1932 eht ot noitcudortnI 5MG1932 Specifications 6MG1928 eht ot noitcudortnI 7MG1928 Specifications 8MG1918S eht ot noitcudortnI 9MG1918S Specifications

01MG1915S eht ot noitcudortnI 11MG1915S Specifications 21MG1915M eht ot

noitcudortnI

31MG1915M Specifications

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1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. Only use attachments / accessories specified by t

he manufacturer.

Page 4

INTRODUCTION TO THE MG1932

The MG1932 is a two-way, line-array loudspeaker system intended for use in arrays of up to six enclosures. Three high-frequency drivers are mounted to the Constant Curvature waveguide which is designed so that multiple enclosures may be arrayed with no discontinuity in the vertical coverage pattern. As a result, the array will behave in much the same way as would a single loudspeaker. Array coverage may be adjusted by means of the Array Configuration Selector (ACS), a feature that provides amplitude shading (see page 14 & 15) when the system is used in passive mode. Integral rigging hardware, a dual angle pole socket and an accessory array frame provide for a variety of mounting and suspension options.

DIMENSIONAL DRAWINGS FOR MG1932

349

(13.75)

376

(14.8)

15°

R:1325

(52.2)

597

(23.5)

Dimensions in mm (inches)

JBL PROFESSIONAL Northridge, CA USA Made in USA

Serial No.

BI-AMP

PASSIVE

PARALLEL

MG1932

BI-AMP ±1 LF: 8 ±2 HF: 6ΩΩ

PASSIVE ±1 IN: 6 ±2 N/C

Ω

Single Speaker

or Short Throw

Mid Throw

Long Throw

Array Configuration Selector - HF Output Level

Transducer Technology U.S. PATENT 5,748,760

MARQUIS GALAXY

Page 5

SPECIFICATIONS

MG1932 - 12”, TWO-WAY, LINE ARRAY LOUDSPEAKER SYSTEM

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Frequency Range (-10 dB)

: 57 Hz - 20 kHz

Frequency Response (±3 dB)

: 75 Hz - 20 kHz

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Crossover Frequency: 1.2 kHz

W 0023 / W 0061 / W 008 :evissaPgnitaR rewoP

(Continuous

/ Program / Peak): Bi-amp LF: 800 W / 1600 W / 3200 W

Bi-amp HF: 75 W / 150 W / 300 W

System Maximum SPL

: 130 dB SPL peak (passive)

LF: 130 dB HF: 139 dB

System Sensitivity (1w @ 1m): 95 dB SPL (passive mode)

LF: 95 dB HF: 114 dB

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2LBJ x 1:revirD FL

woofer with

neodymium-magnet and dual voice-coils

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compression driver

Nominal Impedance: Passive: 8 ohm

Bi-amp LF: 8 ohms Bi-amp HF: 8 ohms

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Suspension / Mounting

: Suspension requires optional MG-AF line array frame kit /

Dual angle 36 mm pole socket / 10 mm eyebolt

Finish

hsinif™xelFaruD kcalB :

Grille

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transparent foam

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Speakon®NL-4 (x2)

Dimensions (H x W x D): 349 mm x 597 mm x 376 mm (13.75 in x 23.5 in x 14.8 in)

)bl 64( gk 12:thgieW teN

Optional Accessories: MG-AF: Suspension array frame

SS2-BK: Tripod speaker stand SS3-BK: Satellite Speaker Pole SS4-BK: Adjustable Satellite Speaker Pole to be used with MG1918S and SRX718S only. M10 Eyebolt Kit (Part # 229-00009-01)

FUNCTIONAL BLOCK DIAGRAM

1. “Frequency Range” and “Frequency Response” are based on half-space conditions.

2. IEC filtered noise with 6 dB crest factor, 2 hours.

3. Calculated based on power rating and sensitivity.

SHORT THROW

MID THROW

LONG THROW

1+ 1-

NL4

INPUT

NL4

INPUT

HPF

LPF

PASSIVE

MODE

-3 dB

0 dB

+3 dB

1+ 1-

BI-AMP

MODE

NL4

INPUT

NL4

INPUT

Page 6

INTRODUCTION TO THE MG1928

NOTE: A white version is available for this product through our custom shop.

Contact your JBL dealer or rep. for details

DIMENSIONAL DRAWINGS FOR MG1928

The MG1928 - the smaller version of the MG1932 is a light-weight, compact, 8”, two-way line-array speaker system system designed for use in arrays of up to six units. MG1928 is the ideal choice when line-array perfor-

mance is needed but the venue size doesn't call for the very long-throw characteristics of larger line-arrays. The MG1928 offers all the same features as the MG1932. As with the MG1932, the Array Configuration Selector (ACS) makes it possible to distribute the sound more evenly over the entire audience area, by reducing the output near the stage and increasing it for the far to reach rear areas. (See page 14 & 15)

Dimensions in mm (inches)

267

（10.5）

230

（9）

15°

876

R：34.5

127

（5.0）

209

（8.3）

115

（4.5）

419

（16.5）

Page 7

SPECIFICATIONS

MG1928 - 8”, TWO-WAY, LINE-ARRAY SPEAKER

metsys rekaepsduol yarra enil ,yaw owt "8:epyT metsyS Frequency Range (-10 dB): 70Hz -20kHz Frequency Response (±3 dB): 87Hz - 19kHz

tinu elgnis ,)lacitrev x latnoziroh( lanimon 5°1 x 0°01:nrettaP egarevoC

elba-hctiws yllanretxe ,evissap / pma-iB:sedoM revossorC Crossover Frequency: 2.0 KHz Power Rating

W0061 / W 008 / W 004:

(Continuous / Program / Peak) Bi-amp LF: 400 W / 800 W / 1600W

Bi-amp HF: 30 W / 60 W / 120 W (two drivers)

System Maximum SPL

: 122dB SPL (passive mode)

LF: 122 dB HF: 128 dB

System Sensitivity (1 W @ 1m) 90 dB SPL (passive mode)

LF: 90 dB HF: 108 dB

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12LBJ x 1:revir

D FL

woofer

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Nominal Impedance: Passive: 8 Ohms

Bi-amp LF: 8 Ohms Bi-amp HF: 16 Ohms

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Suspension / Mounting: Dual 36mm pole socket included. Suspension requires optional

MG-SMAF line array frame kit or 10mm eyebolt.

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transparent black foam backing.

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Speakon NL-4

Dimensions

(H x W x D): 230 mm x 419 mm x 267 mm (9 in x 16.5 in x 10.5 in)

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Optional Accessories: MG-SMAF: Suspension array frame

SS2-BK: Tripod speaker stand Eyebolt Kit (Part # 229-00009-01)

FUNCTIONAL BLOCK DIAGRAM

1 IEC filtered noise with 6 dB crest factor, 2 hours. 2 Calculated, based on power rating and sensitivity.

Page 8

INTRODUCTION TO THE MG1918S

The MG1918S is a compact, single, 18" direct radiating subwoofer intended for use in suspended arrays or ground-supported applications. The suspension system is designed for full compatibility with the MG1932 line-array speaker system and the MG-AF array frame.

DIMENSIONAL DRAWINGS FOR MG1918S

Dimensions in mm (inches)

749

（29.5）

597

（23.5）

254

（10.0）

508

（20.0）

（0.3）

457

（18.0）

235

（9.25）

546

（21.5）

464

（18.25）

298

（11.75）

（2.37）

（1.75）

（1.5）

（3.13）

（2.2）

489

（19.25）

（1.8）

508

（20.0）

（2.0）

406

（16.0）

610

（24.0）

Page 9

SPECIFICATIONS

MG1918S - 18” , BASS-REFLEX SUBWOOFER

MG1918S

1. “Frequency Range” and “Frequency Response” are based on half-space conditions.

2. IEC filtered noise with 6 dB crest factor, 2 hours.

3. Calculated based on power rating and sensitivity.

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Frequency Range (-10 dB)

: 31 Hz - 220 Hz

Frequency Response (±3 dB)

: 34 Hz - 220 Hz Input Connection Modes: Switchable, +1/-1 or +2/-2 Recommended Crossover: High-pass: Butterworth 18 dB/oct, 31 Hz

Low-pass: Linkwitz-Riley 48 dB/oct, 80 Hz

W 0023 / W 0061 / W 008gnitaR rewoP

(Continuous

/ Program / Peak)

Maximum SPL

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Sensitivity (1w @ 1m): 95 dB SPL

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Nominal Impedance: 8 ohms

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Mounting

MG-AF line array frame kit or 10mm eyebolt lanoitpO:

(Part #229-00009-01)

Suspension / Mounting: Top mounted M20 threaded socket for optional SS4-BK

pole

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Finish

hsinif xelFaruD kcalB:

Grille

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charcoal foam backing.

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Speakon®NL-4 (x2)

Dimensions (H x W x D): 508 mm x 597 mm x 749 mm; (20.0 in x 23.5 in x 29.5 in)

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Optional Accessories: SRX718S-CVR: Pull-over padded cover

SS4-BK: Adjustable, heavy-duty pole, M20 thread to 35 mm pole mount WK-4: Caster kit MG-AF Array Frame Eyebolt Kit (Part #229-00009-01)

FUNCTIONA BLOCK DIAGRAM

JBL PROFESSIONAL Northridge, CA USA

Serial No.

NL4 ±1

NL4 ±2

MG1918S

IN / THRU

Marquis Galaxy

8Ω

WARNING: Do not attempt to suspend unless you have read and fully understood all instructions. Follow all applicable local ordinances. Attachment of the loudspeaker to supporting structure should be referred to a qualified professional.

Equipped with Differential Drive® Transducer

Technology U.S. PATENTS: 5,748,760, 6,768,806,

6,847,726, 6,774,510 and D483,743.

Designed in the USA Assembled by JBL in Mexico

Page 10

INTRODUCTION TO THE MG1915S

The MG1915S a very compact single 15" direct radiating subwoofer is intended as companion subwoofer for the MG1928. The suspension system is designed for full compatibility with the MG1928 Line Array System and with the MG-SMAF array frame. The M20 mounting plate allows for utilization of the adjustable pole mount SS4-BK.

WARNING: The MG1928 is the only system intended for use with the MG1915S when utilizing the SS4-BK.

DIMENSIONAL DRAWINGS FOR MG1915S

Dimensions in mm (inches)

31.4

（12.4）

（1.6）

318

（12.5）

478

（18.8）

597

（23.5）

500.13

（19.7）

496

（19.5）

420

（16.5）

478

（18.8）

328.24

（12.9）

248

（9.8）

（1.7）

Page 11

SPECIFICATIONS

MG1915S - 15”, BASS-REFLEX SUBWOOFER

51:epyT metsyS " bass reflex subwoofer

Frequency Range (-10 dB): 35Hz -250Hz Frequency Response (±3 dB): 40Hz - 250Hz Recommended Hi-Pass Filter: HP: Butterworth 24 dB/octave, 45 Hz

LP: Linkwitz-Riley 48 dB/octave, 80 – 120Hz

Power Rating

: (Continuous / Program / Peak) 800 W / 1600 W / 3200W Recommended EQ: +2dB at 45Hz, Q: 2.5 Maximum SPL

: 126 dB SPL

Sensitivity (1 W @ 1m) 91 dB SPL

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woofer

Nominal Impedance: 4 Ohms

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Suspension / Mounting: Top mounted M20 threaded socket for optional pole SS4-BK. Integrated

flying hardware for use with array frame MG-SMAF. Optional M10 eyebolt kit.

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hsinif™xelFaruD kcalB:hsiniF

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transparent black foam backing.

Input Connectors: 2x Neutrik

Speakon NL-4 Input connection modes: Switchable, +1/-1 or +2/-2 Dimensions (H x W x D): 496 mm x 420 mm x 597 mm (19.5 in x 16.5 in x 23.5 in)

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Optional Accessories: SS4-BK: Adjustable, heavy-duty pole,

M20 thread to 35 mm pole mount WK-4: Caster kit MG-SMAF Array Frame Eyebolt Kit (Part #229-00009-01)

FUNCTIONAL BLOCK DIAGRAM

1 IEC filtered noise with 6 dB crest factor, 2 hours. 2 Calculated, based on power rating and sensitivity.

JBL PROFESSIONAL Northridge, CA USA

Serial No.

NL4 ±1

NL4 ±2

MG1915S

IN / THRU

4Ω

Marquis Galaxy

Equipped with Differential Drive® Transducer

Technology U.S. PATENTS: 5,748,760, 6,768,806,

Designed in the USA Assembled by JBL in Mexico

6,847,726, 6,774,510 and D483,743.

Page 12

INTRODUCTION TO THE MG1915M

The MG1915M is a dedicated, compact and lightweight, 15", two way touring-class floor monitor, with only a 375 mm (14.75 in) stage height and JBL’s latest neodymium-magnet transducers.

A 380 mm (15 in) 2265H patented Differential Drive®woofer handles 800 watts (continuous) and delivers accurate and precise low frequency reproduction. The 2452H 102 mm (4 in) voice-coil compression driver is coupled to a 50° x 90° aluminum horn to provide smooth and clear high frequency reproduction, critical for high performance monitoring.

Bi-amp or full-range passive operation may be selected via a recessed, high-current switch mounted alongside the NL4 input connector in one of the handle cups. An additional NL4 connector is mounted in the other handle cup for a convenient loop-thru connection, minimizing cable runs on stage.

The enclosure is constructed of top quality Baltic birch plywood and is coated in JBL’s rugged DuraFlex™ finish. It is a symmetrical 30° wedge design, with four non-slip rubber feet per side enabling convenient left and right applications of adjacent monitors. The transducers are protected by an attractive 16 gauge CNC-machined steel grille, which is internally lined with acoustically transparent foam to provide additional transducer protection.

DIMENSIONAL DRAWINGS FOR MG1915M

Dimensions in mm (inches)

324

(12.75)

432

(17.00)

629

(24.75)

159

(6.25)

375

(14.75)

546

(21.51)

191

(7.51)

Dimensions in mm (inches)

Page 13

SPECIFICATIONS

MG1915M - 15”, TWO-WAY STAGE MONITOR

rotinoM egatS yaw-owT "51 :epyT metsyS Frequency Range (-10 dB): 60 Hz - 20 kHz Frequency Response (±3 dB): 70 Hz - 20 kHz Coverage Pattern: 50° x 90° nominal Crossover Modes: Passive / Bi-amp Crossover Frequency: 1.1 kHz

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(Continuous / Program / Peak) Bi-amp LF: 800 W / 1600 W / 3200 W, 2 hrs

Bi-amp HF: 75 W / 150 W / 300 W, 2 hrs

)kaepLPS Bd 331( suounitnocLPS Bd 721:LPS mumixaM

System Sensitivity (1w @ 1m): 98 dB SPL

evirD laitnereffiD )ni 51( mm 083 ,H5622LBJ x 1:revirD FL

woofer 8 Ohms

,tixe )hcni 5.1( mm 83 ,lioc eciov retemaid )

hcni 0.4( mm 001 ,H2542LBJ x 1:revirD FH

neodymium magnet compression driver 8 Ohms

Nominal Impedance: 8 Ohms Full-Range Passive

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.doowylp hcriB ,mm 81/51 ,rotinom egats lacirtemmyS:erusolcnE

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hsinif™xelFaruD kcalB:hsiniF

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black screen backing.

Input Connectors: Neutrik

Speakon®NL-4 (x2), one on each end

Dimensions (H x W x D): 629 mm x 432 mm

x 324 mm (375 mm stage height)

24.75 in x 17 in x 12.75 in (14.75" stage height) )bl 0.64( gk 12:thgieW teN

FUNCTIONAL BLOCK DIAGRAM

IEC standard, full bandwidth pink noise with 6 dB crest factor for specified period

Calculated based on power rating and sensitivity.

JBL continually engages in research related to product improvement. Some materials, production methods and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed th

e original design specifications unless otherwise stated.

HIGH FREQ

LOW

FREQ

LOW

FREQ

NL4

IN / THRU

NL4

IN / THRU

NL4

IN / THRU

NL4

IN / THRU

HPF

PASSIVE

MODE

BI-AMP

MODE

LPF

BI-AMP

PASSIVE

MG1915M

BI-AMP ±1 LF: 8 ±2 HF: 8ΩΩ

PASSIVE ±1 IN: 8 ±2 N/C

Ω

JBL PROFESSIONAL Northridge, CA USA

Transducer

Technology U.S. PATENTS: 5,748,760, 6,768,806,

6,847,726, 6,774,510 and D483,743.

Designed in the USA

Assembled by JBL in Mexico

Marquis Galaxy

BI-AMP

PASSIVE

MG1915M

BI-AMP ±1 LF: 8 ±2 HF: 8ΩΩ

JBL PROFESSIONAL Northridge, CA USA

Equipped with Differential Drive

Designed in the USA

Assembled by JBL in Mexico

Serial No.

MG1915M

BI-AMP ±1 LF: 8 ±2 HF: 8ΩΩ

PASSIVE ±1 IN: 8 ±2 N/C

JBL PROFESSIONAL

Northridge, CA USA Designed in the USA

Assembled by JBL in Mexico

BI-AMP

PASSIVE

Marquis Galaxy

Page 14

AMPLITUDE SHADING

Amplitude shading is a technique that allows the coverage pattern of a loudspeaker array to be shaped by adjusting the relative acoustic output of some of the devices in the array. Most often, array shading involves only the mid and high-frequency sections of the array. In a simple system consisting of three MG1932 / MG1928s, the lower speaker (which covers the nearest listeners) may have its high-frequency output reduced. At the same time, the upper speaker may have its high frequency output increased. The overall sound-power in the room is unchanged but the distribution of acoustic energy to the audience is far more uniform. Amplitude shading of an MG1932 / MG1928 array may be accomplished in passive or bi-amplified systems.

ARRAY CONFIGURATION SELECTOR (ACS)

In passive mode, the Array Configuration Selector may be used. The -3 dB position will typically be used for the speaker(s) in an array that are covering the nearest listening area. The +3 dB position will be used for the speaker(s) covering the more distant areas; or to compensate for the low-frequency build-up resulting from mutual coupling of multiple woofers in an array.

Short Throw (-3 dB) Long Throw (+3 dB)Medium Throw (0 dB)

FREQUENCY RESPONSE

The frequency response graph represents measurements from a single typical MG series speaker, applying the three different ACS settings: +3dB, 0dB, -3dB.

Page 15

BI-AMPLIFIED SYSTEM

In a bi-amplified system, array shading is accomplished by connecting separate amplifier channels to the HF section of each MG1932 / MG1928. In larger arrays, a single amplifier channel may be used for two adjacent loudspeakers. Array shading is then accomplished by adjusting the gain of the HF amplifier channels. For extremely precise control over system performance, it may also be desirable to dedicate an individual system controller output to each HF amplifier channel.

ARRAY CONFIGURATION SELECTOR (ACS)

Below is an example of applying the ACS in a three-speaker array. In this particular configuration, the ACS on the top speaker is set at +3 dB, the middle speaker at 0 dB, and the bottom speaker -3 dB.

Please visit www.jblpro.com/tunings for latest versions of our recommended system tunings or call customer service at Toll Free 1-800-852-5776.

SYSTEM PROCESSOR TUNINGS

+3 dB

0 dB

-3 dB

Audience

Page 16

DEPLOYING THE SYSTEM

The MG1932 is a flexible speaker system that can be deployed in ground-supported or suspended applications. The following information will help you set up your MG1932 system safely and effectively.

POLE AND TRIPOD SAFETY WARNINGS!

When using stands or poles, be sure to observe the following precautions:

• Check the stand or pole specification to be certain the device is designed to support the weight of the speaker. Observe all safety precautions specified by the manufacturer.

• Be certain that the surface on which the system is to be stacked is flat, stable and solid.

• Route cables so that performers, production crew, and audience will not trip and topple the speakers.

• Inspect the stand (or pole and associated hardware) before each use and do not use equipment with

worn, damaged, or missing parts.

• Do not attempt to place more than two MG1932 loudspeakers on a stand or pole.

• When mounting two MG1932 speakers on a pole or tripod, integral rigging hardware must be used

to secure the speakers to each other.

• Always be cautious when deploying the system outdoors. Unexpected winds may topple a system. It may be necessary to place additional weight (i.e.sandbags) on the base of the stand to improve stability. Avoid attaching banners or similar items to any part of a speaker system. Such attachments could act as a sail and topple the system.

• Unless you are confident that you can handle the weight of the speaker, ask another person to help you get it onto the tripod stand or pole.

• One or two MG1932 cabinets may be mounted onto either a JBL SS2-BK tripod stand or with the SS4-BK adjustable pole mount to their companion MG1918S or SRX718S subwoofers. Do not mount MG1932 cabinets on top of the compact MG1915S subwoofer!

• One or two MG1928 cabinets maybe mounted onto either a JBL SS2-BK tripod stand or their companion subwoofer MG1915S. The larger type subwoofer SRX718S / MG1918S can also be used.

SINGLE MG1932 / MG1928

A single MG1932 may be used on a tripod stand (JBL SS2-BK) or on a pole (JBL SS4-BK) over its companion subwoofer the MG1918S or the SRX718S. The use of a subwoofer is recommended for applications requiring more low-frequency power and extension. Usually, the Array Configuration Selector (ACS) switches on the input panel should be set to the “Short Throw (-3 dB)” position when a single speaker is used.

A single MG1928 may be used on a tripod stand (JBL SS2-BK) or on a pole (JBL SS4-BK) over its compact companion subwoofer the MG1915S or the larger MG1918S / SRX718S subwoofer models.

The MG1932 / MG1928 includes a dual angle 36 mm pole mount socket. By selecting the appropriate pole socket and adjusting the height of the tripod or pole, optimum coverage may be achieved. Ideally, the audience should not be able to see either the bottom or the top surfaces of the speaker. This will insure that all listeners are within the "included coverage angle" of the loudspeaker. The rear pole-socket will position the speaker with the baffle 2.5° to the floor while the forward socket will position the speaker with the baffle angled down by 15°. System illustration shows the available JBL SS2-BK tripod stand.

Page 17

DUAL MG1932 / MG1928

Unlike most conventional speakers, the MG1932 / MG1928 is designed so that a pair of speakers may be safely mounted onto a pole or tripod stand. For most applications, the forward socket of the dual angle pole socket will be used. This will tilt the lower of the two speakers at a 15° down-angle (providing coverage of the near listeners) while the upper speaker will face straight out (covering the more distant areas). Ideally, the listeners should not be able to see either the bottom or the top surfaces of the two-speaker array. Usually, the Array Configuration Selector (ACS) switches on the lower speaker's input panel should be set to the “Short Throw (-3 dB)” position while the upper speaker will be set to either “Short Throw (-3 dB)” or “Mid Throw (0 dB)”.

Place the speakers on the pole or tripod one at a time. Be sure to lock the two speakers together using the integral rigging hardware (see below). System illustration shows available JBL SS4-BK speaker pole and SRX718S subwoofers. Do not stack

more than two MG1932 / MG1928 speakers on a pole.

LOCKING (2) MG1932 / MG1928S LOUDSPEAKERS TOGETHER

Any time two or more MG1932 / MG1928s are arrayed together, they must be mechanically secured to each other using the integral rigging frame and supplied quick release pins. See the diagram below for details. Safe combinations are: MG1918S with MG1932 MG1915S with MG1928 WARNING: Only the correct quick release pins supplied by JBL are to be used.

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Correct use of all rigging hardware is required for secure system suspension. Careful calculations should always be performed to ensure that all components are used within their Maximum Load Limit before the array is suspended. Never exceed the maximum recommended load ratings. Prior to suspending the system, an expert, trained and experienced in flying speaker systems should be consulted. Research and understand the codes, practices, and requirements in the venues where you intend to operate your sound system.

INSPECTION & MAINTENANCE

Before suspending or pole mounting any speaker system always inspect all components (enclosure, rigging frames, pins, eyebolts, track fittings, etc.) for cracks, deformations, corrosion, missing, loose or damaged parts that could reduce strength and safety of the array. Do not suspend or pole mount the speaker until the proper corrective action has been taken. Installed systems should be inspected at least annually. The inspection shall include a visual survey of all corners and load bearing surfaces for signs of cracking, water damage, de-lamination, or any other condition that may decrease the strength of the loudspeaker enclosure. Accessory rigging hardware provided with or for the JBL MG1932 / MG1928 or MG1918S / MG1915S louderspeaker must be inspected for fatigue at least annually or as required by local ordinance. For all other hardware and fittings, refer to the hardware manufacturer's inspection and maintenance guidelines for process.

ARE YOU NEW TO RIGGING?

If you are new to rigging, you should do the following:

• Read and study JBL Technical Note Volume 1, Number 14: Basic Principles for Suspending

Loudspeaker Systems (available at http://www.jblpro.com/pub/technote/tn_v1n14.pdf).

• Know the rules for safe rigging.

• Attend a safe rigging seminar, such as that presented by professionals like Rigging Seminars™

(www.riggingseminars.com) or by Chain Motor Hoist manufacturers like Columbus McKinnon Corp. (manufacturers of the C/M Lodestar).

• Meet and establish a relationship with a licensed mechanical or structural engineer. Get in the habit

of asking them questions instead of guessing about their answers. Learn from what they tell you.

• Meet and discuss this aspect of your business with your Insurance Agent.

ATTACHMENT TO STRUCTURES

A licensed Professional Engineer must approve the placement and method of attachment to the structure prior to the installation of any overhead object. The following performance standards should be provided to the Professional Engineer for design purposes; Uniform Building Code as applicable, Municipal Building Code as applicable, and Seismic Code as applicable. The installation of the hardware and method of attachment must be carried out in the manner specified by the Professional Engineer. Improper installation may result in damage, injury or death.

JBL is not responsible for the application of its products for any purpose or the misuse of this information for any purpose. Furthermore, JBL is not responsible for the abuse of its products caused by avoiding compliance with inspection and maintenance procedures or any other abuse.

SUSPENSION SAFETY WARNINGS!

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INSTALLING THE ARRAY FRAME

The array frame is attached to the internal rigging of the MG system using the provided Quick Release Pins WARNING: Do not use any substitute for these pins.

1. Begin by attaching the two side arms (A) to either side of the center frame. Use a pair of the provided Quick Release Pins (B)* to attach the arms to the frame. Note: Side arms should be attached with the rubber bumper facing up and away from the center frame. The center frame is installed with the rubber gasket toward the enclosure and the label right side up. [Note: The arms of the MG-AF are deliberately designed so as not to be interchangeable. The arms of the MG-SMAF are already attached. ]

2. Place the entire array frame on top of the MG system and flip up the drop levers (C) found on both sides of the speaker to be received by the array frame arms.

3. Once the drop levers on the speaker are received by the array frame, use a pair of the provided Quick Release Pins (D) to attach the drop levers to the array frame.

*(B) does not apply to MG-SMAF

MAXIMUM ARRAY SIZE

MG-AF Array Frame

Maximum number of MG1918S in array 6 5 4 3 2 1 0

Maximum number of MG1932 in array 0 1 2 3 4 5 6

MG-SMAF Array Frame

MG-AF ARRAY FRAME

The following table defines the maximum number of speakers that may be suspended using the MG-AF frame. A minimum design factor of 7:1 is maintained for all speaker configurations at or below those indicated in the table.

MG-SMAF ARRAY FRAME

The following table defines the maximum number of speakers that may be suspended using the MG-SMAF array frame. A minimum design factor of 7:1 is maintained for all speaker configurations at or below those indicated in the table.

The MG subwoofers must always be on top of the array.

Maximum number of MG1915S in array 4 3 2 2 2 0

Maximum number of MG1928 in array 0 2 3 4 5 6

(A)

(D)

(A)

(B)*

(C)

(D)

There are two variations of the MG array frame. The MG-AF is for suspension of MG1918S and MG1932. The MG-SMAF is solely intended for use with the MG1928 and MG1915S. Before suspending an MG array, determine which version of the array frame you have and consult the table below to determine the maximum number of speakers that may be safely suspended. The subwoofers must always be at the top of the array.

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GROUND-STACKED, UPWARD FIRING ARRAYS

Applications such as covering stadium bleachers from the playing field may be addressed by installing the MG-AF / MG-SMAF array frame to the bottom of the array.

Up to four MG1932 / MG1928 loudspeakers may be locked together and ground stacked using the MG array frame kit, as shown. WARNING: Do not ground stack more than four MG1932 / MG1928 loudspeakers in one array.

When ground stacking MG loudspeakers, use the MG-AF / MG-SMAF array frame as the base (as shown) by attaching the loose drop levers, included in the array frame kit, to the lower rigging bar on the MG loudspeaker. When stacking the loudspeakers together, make sure each loudspeaker is locked together. Be certain that the surface on which the system is to be stacked is flat, stable and solid.

SUSPENSION IN PERMANENT INSTALLATIONS

For permanent installation applications an MG array may be suspended using M10 eyebolts. Only load-rated, forged shoulder eyebolts are to be used. A kit consisting of three (3) forged shoulder eyebolts is available from JBL Professional as part number 229-00009-01. Suspension of the MG array must employ both top attachment points. The MG1918S and MG1915S subwoofers must always be at the top of the array.

EYEBOLT SUSPENSION

The following table defines the maximum number of speakers that may be suspended using the two M10 eyebolt attachment points provided on the cabinets. A minimum design factor of 7:1 is maintained for all speaker configurations at or below those indicated in the table.

Maximum number of MG1918S in array 5 4 3 2 1 0

Maximum number of MG1932 in array 0 2 4 5 6 6

Maximum number of MG1915S in array 4 3 2 2 2 0

Maximum number of MG1928 in array 0 2 3 4 5 6

EYEBOLT SUSPENSION ARRAY FRAME SUSPENSION

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INTRODUCTION TO THE MG-AF

The MG-AF is an array frame designed to be used for suspension of the MG1932 and MG1918S loudspeaker systems. The optional array frame kit includes the following items:

• 1 x center frame

• 2 x side arms

• 4 x quick release pins

• 2 x drop levers

• 2 x 3/8” shackles

WORKING LOAD LIMIT

The MG-AF and MG-SMAF array frames have been precisely engineered to work together with the MG line of speakers as a system. The working load limit depends on the configuration of array frame and speakers being suspended. Please refer to the “DEPLOYING THE SYSTEM” section of this user guide for maximum allowable load limits when using the MG-AF and MG-SMAF frame.

Use of the array frames in any manner other than as described in this manual could result in damage to the frame and pose a risk of injury or death.

(2.0)

(1.0)

(2.5)65(2.5)65(2.5)65(2.5)

445

(17.5)

635 (25)

330

(13.0)

(0.5)

(1.0)

(1.5)

292

(11.5)

117

(4.6)

(0.4)

610

(24.0)

Dimensions in mm (inches)

DIMENSIONAL DRAWINGS FOR MG-AF

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INTRODUCTION TO THE MG-SMAF

The MG-SMAF is an array frame designed to be used for suspension of the MG1928 and MG1915S loudspeaker systems. The optional array frame kit includes the following items:

• 1 x frame

• 2 x quick release pins

• 2 x drop levers

• 2 x 3/8" shackles

WORKING LOAD LIMIT

The working load limit depends upon the configuration of array frame and speakers being suspended. Please refer to the “DEPLOYING THE SYSTEM” section of this user guide for maximum allowable load limits when using the MG-SMAF frame.

The MG-SMAF array frame has been specifically designed to work only with the MG1928 and MG1915S speakers. Use of the array frames in any manner other than as described in this manual could result in damage to the frame and pose a risk of injury or death.

424

(16.7)

(2.0)

(0.38)

(1.0)

(0.75)

457

(18.0)

127

(5.0)

(2.0)

203 (8.0)

(2.0)

(1.0)

0.13 (0.5)

Dimensions in mm (inches)

DIMENSIONAL DRAWINGS FOR MG-SMAF

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JBL WARRANTY

The JBL Warranty on professional loudspeaker products will follow the warranty policy implemented in China market. Please refer to the warranty card for details.

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Part Number:5069690 03/2016

JBL Professional

8500 Balboa Blvd.

Northridge, CA 91329 USA

Marquis M G 1 9 3 2, M G 1 9 1 8 S, M G1915 M, M G 1 9 2 8, M G 1928 - W H User Manual

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