V R X 9 3 2 L A
V R X 9 3 2 L A - W H
V R X 9 1 8 S
V R X 9 1 8 S - W H
V R X 9 1 5 M
U s e r ’ s G u i d e
V R X 9 2 8 L A
V R X 9 1 5 S
V R X - A F
V R X - S M A F
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INTRODUCTION TO THE VRX932LA
The VRX932LA 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 15 & 16) 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.
*NOTE: The VRX932LA-WH is designed for fixed install situations where white loudspeakers are required to
match existing decor. White versions therefore do not have handles, feet or pole mount features.
Dimensional Drawings for VRX932LA
Equipped with Differential DriveÆ
Transducer Technology U.S.
PATENT 5,748,760
S
ingle
peaker
or
S
Mid
hrow
Long
hrow
T
T
S
hort
Throw
Array Configuration Selector
-
HF Output Level
BI-AMP
15o
343
PASSIVE
(13.5)
PASSIVE
±1 IN: 6Ω
±2 N/C
BI-AMP
±1 LF: 8Ω
±2 HF: 6Ω
PARALLEL
VRX932LA
JBL PROFESSIONAL
Northridge, CA USA
Made in USA
Serial No.
R: 1325
(52.2)
376
(14.8)
Dimensions in mm (inches)
597
(23.5)
3
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SPECIFICATIONS
VRX932LA - 12", Two-Way, Line-array Loudspeaker System
System Type:
Frequency Range (-10 dB) :
12" two-way, line array loudspeaker system
57 Hz - 20 kHz
1
Frequency Response ( 3 dB) : 75 Hz - 20 kHz
1
Coverage Pattern:
Crossover Modes:
Crossover Frequency:
Power Rating
100º x 15º nominal (horizontal x vertical)
Bi-amp / passive, externally switchable
1.2 kHz
Passive: 800 W / 1600 W / 3200 W
(Continuous / Program / Peak): Bi-amp LF: 800 W / 1600 W / 3200 W
2
Bi-amp HF: 75 W / 150 W / 300 W
System Maximum SPL :
130 dB SPL peak (passive)
LF: 130 dB
3
HF: 139 dB
System Sensitivity (1w @ 1m):
LF Driver:
95 dB SPL (passive mode)
LF: 95 dB
HF: 114 dB
3
1 x JBL 2262H 305 mm (12 in) Differential Drive® woofer with neodymium-magnet and
dual voice-coils
HF Driver:
Nominal Impedance:
3 x JBL 2407J, 25.4 mm (1 in) voice-coil, neodymium magnet compression driver
Passive: 8 ohm
Bi-amp LF: 8 ohms
Bi-amp HF: 8 ohms
Active Tunings:
Enclosure:
18 mm, 11-ply birch plywood.
Suspension / Mounting:
Suspension requires optional VRX-AF line-array frame kit / Dual angle 35 mm pole socket /
10 mm eyebolt
4
Finish:
5
Black DuraFlex™ finish
Powder coated, black, 16-gauge perforated steel with acoustically transparent foam
Neutrik ® Speakon® NL-4 (x2)
Grille:
6
Input Connectors:
Dimensions (H x W x D):
Net Weight:
343 mm x 597 mm x 376 mm (13.5 in x 23.5 in x 14.8 in)
21.8 kg (48 lb)
Optional Accessories:
VRX-AF: Suspension array frame
SS2-BK: Tripod speaker stand
Eyebolt Kit (Part # 229-00009-01)
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.
4. White version does not include pole mount feature.
5. White version uses JBL Pro White Duraflex Finish.
6. White version grille is powdercoated white with acoustically transparent white cloth backing.
Functional Block Diagram
LONG THROW
-
+
+3 dB
+
-
0 dB
-
MID THROW
+
HPF
1+
1-
+
-
-
NL4
INPUT
1+
1-
+
-3 dB
2+
2-
NL4
INPUT
+
-
SHORT THROW
2+
2-
BI-AMP
MODE
PASSIVE
MODE
+
-
+
-
1+
1-
LPF
1+
1-
NL4
INPUT
NL4
INPUT
2+
2-
2+
2-
4
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INTRODUCTION TO THE VRX928LA
The VRX928LA – the smaller version of the VRX932LA is a light-weight, compact, 8", two-way line-array
speaker system designed for use in arrays of up to six units. VRX928LA is the ideal choice when line-array
performance is needed but the venue size doesn't call for the very long-throw characteristics of larger
line-arrays. The VRX928LA offers all the same features as the VRX932LA. As with the VRX932LA, 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 15 & 16)
NOTE: A white version is available for this product through our custom shop.
Dimensional Drawings for VRX928LA
419
(16.5)
267
(10.5)
127
209
(5.0)
(8.3)
115
(4.5)
0
230
(9)
15
876
(R:34.5)
Dimensions in mm (inches)
5
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SPECIFICATIONS
VRX928LA - 8", Two-way, Llne-array Speaker
System Type:
Frequency Range (-10 dB):
8" two way, line array loudspeaker system
70Hz -20kHz
Frequency Response ( 3 dB): 87Hz - 19kHz
Coverage Pattern:
Crossover Modes:
Crossover Frequency:
Power Rating1:
100º x 15º nominal (horizontal x vertical), single unit
Bi-amp / passive, externally switch-able
2.0 KHz
400 W / 800 W / 1600W
(Continuous / Program / Peak) Bi-amp LF: 400 W / 800 W / 1600W
Bi-amp HF: 30 W / 60 W / 120 W (two drivers)
System Maximum SPL2:
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
LF Driver:
1 x JBL 2168H-1, 200 mm (8 in) Differential Drive® woofer
HF Driver:
Nominal Impedance:
2 x JBL 2414H, 25 mm (1.0 in) neodymium compression driver
Passive: 8 Ohms
Bi-amp LF: 8 Ohms
Bi-amp HF: 16 Ohms
Active Tunings:
Enclosure:
Suspension / Mounting:
15 mm - 25 mm, multi ply birch plywood
Dual 36mm pole socket included. Suspension requires optional
VRX-SMAF line array frame kit or 10 mm eyebolt.
Integrated handle with backing cup
Transport:
Finish:
Black DuraFlex™ finish
Grille:
Powder coated, black, 18 gauge perforated steel with acoustical transparent black foam backing.
Input Connectors:
Dimensions (H x W x D):
Net Weight:
2x Neutrik® Speakon NL-4
230 mm x 419 mm x 267 mm (9 in x 16.5 in x 10.5 in)
12.7 kg (28 lb.)
Optional Accessories:
VRX-SMAF: Suspension array frame
SS2-BK: Tripod speaker stand
Eyebolt Kit (Part # 229-00009-01)
1 IEC filtered noise with 6 dB crest factor, 2 hours.
2 Calculated, based on power rating and sensitivity.
Functional Block Diagram
6
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INTRODUCTION TO THE VRX918S
The VRX918S 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 VRX932LA
line-array speaker system and the VRX-AF array frame.
*NOTE: The VRX918S-WH is designed for fixed installation situations where white loudspeakers are required to
match existing decor. White versions therefore do not have handles, feet or pole mount features.
Dimensional Drawings for VRX918S
749
(29.5)
254
(10.0)
546
(21.5)
464
(18.25)
(3.1
7
9
)
597
298
3
(23.5)
(11.75)
(2.37)
60
4
5
7
508
(18.0)
(20.0)
44
235
(9.2
(1.75)
5
)
8
(0.3)
56
(2.2)
(1.5)
38
489
(19.25)
610
(24.0)
406
(16.0)
51
Dimensions in mm (inches)
(2.0)
508
(20.0)
45
(1.8)
7
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SPECIFICATIONS
VRX918S - 18" Subwoofer
System Type:
18" bass-reflex subwoofer
31 Hz - 220 Hz
Frequency Range (-10 dB)1:
Frequency Response ( 3 dB)1: 34 Hz - 220 Hz
Switchable, +1/-1 or +2/-2
Input Connection Modes:
Recommended Crossover:
High-pass: Butterworth 18 dB/oct, 31 Hz
Low-pass: Linkwitz-Riley 48 dB/oct, 80 Hz
800 W / 1600 W / 3200 W
130 dB SPL peak
95 dB SPL
Power Rating
(Continuous2 / Program / Peak):
Maximum SPL3:
Sensitivity (1w @ 1m):
LF Driver:
1 x JBL 2268H 457 mm (18 in) Differential Drive woofer
8 ohms
Nominal Impedance:
Active Tunings:
Mounting4:
Use SRX718S tunings
Top mounted M20 threaded socket for optional SS4-BK pole
Optional VRX-AF line array frame kit or 10mm eyebolt (Part #229-00009-01)
Rectangular, 18 mm, 13-ply birch plywood
Black DuraFlex finish
Powder coated, 16-gauge perforated steel with acoustical transparent charcoal foam backing.
Neutrik® Speakon® NL-4 (x2)
Suspension / Mounting:
Enclosure:
Finish5:
Grille6:
508 mm x 597 mm x 749 mm; (20.0 in x 23.5 in x 29.5 in)
37 kg (81 lb)
Input Connectors:
Dimensions (H x W x D):
Net Weight:
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
VRX-AF Array Frame
Eyebolt Kit (Part #229-00009-01)
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.
4. White version does not include pole mount feature.
5. White version uses JBL Pro White Duraflex Finish.
6. White version grille is powdercoated white with acoustically transparent white cloth backing.
Functional Block Diagram
8
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INTRODUCTION TO THE VRX915S
The VRX915S a very compact single 15” direct radiating subwoofer is intended as companion subwoofer
for the VRX928LA. The suspension system is designed for full compatibility with the VRX928LA Line Array
System and with the VRX-SMAF array frame. The M20 mounting plate allows for utilization of the adjustable
pole mount SS4-BK.
WARNING: The VRX928LA is the only system intended for use with the VRX915S when utilizing the SS4-BK.
Dimensional Drawings for VRX915S
314
(12.4)
41
(1.6)
318
(12.5)
478
(18.8)
597
(23.5)
478
(18.8)
328.24
420
(12.9)
(16.5)
248
43
(1.7)
(9.8)
500.13
(19.7)
496
(19.5)
43
(1.7)
Dimensions in mm (inches)
9
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SPECIFICATIONS
VRX915S - 15", Bass-reflex Subwoofer
System Type:
15” bass reflex subwoofer
Frequency Range (-10 dB):
Frequency Response ( 3 dB):
Recommended Hi-Pass Filter:
35Hz -250Hz
40Hz - 250Hz
HP: Butterworth 24 dB/octave, 45 Hz
LP: Linkwitz-Riley 48 dB/octave, 80 – 120Hz
Power Rating1:
(Continuous / Program / Peak)
Recommended EQ:
800 W / 1600 W / 3200W
+2dB at 45Hz, Q: 2.5
Maximum SPL2:
Sensitivity (1 W @ 1m)
LF Driver:
Nominal Impedance:
Active Tunings:
126 dB SPL
91 dB SPL
®
1 x JBL 2265G-1, 250 mm (15 in) Differential Drive woofer
4 Ohms
Enclosure:
Suspension / Mounting:
15 mm - 18 mm, multi ply birch plywood
Top mounted M20 threaded socket for optional pole SS4-BK. Integrated flying hardware
for use with array frame VRX-SMAF. Optional M10 eyebolt kit.
Integrated steel handle with backing cup
Black DuraFlex™ finish
Transport:
Finish:
Grille:
Powder coated, black, 18 gauge perforated steel with acoustical transparent black foam backing.
2x Neutrik ® Speakon NL-4
Switchable, +1/-1 or +2/-2
496 mm x 420 mm x 597 mm (19.5 in x 16.5 in x 23.5 in)
26 kg (57 lb.)
Input Connectors:
Input connection modes:
Dimensions (H x W x D):
Net Weight:
Optional Accessories:
SS4-BK: Adjustable, heavy-duty pole,
M20 thread to 35 mm pole mount
WK-4: Caster kit
VRX-SMAF Array Frame
Eyebolt Kit (Part #229-00009-01)
1 IEC filtered noise with 6 dB crest factor, 2 hours.
2 Calculated, based on power rating and sensitivity.
Functional Block Diagram
4 Ohms
10
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INTRODUCTION TO THE VRX915M
The VRX915M is a dedicated, compact and lightweight, 15", two way touring-class floor monitor, with only
a 375mm (14.75 in) stage height and JBL’s latest neodymium-magnet transducers.
A 380mm (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 Drawing for VRX915M
546
(21.51)
191
(7.51)
324
(12.75)
375
(14.75)
432
(17.00)
629
159
(24.75)
(6.25)
Dimensions in mm (inches)
11
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SPECIFICATIONS
VRX915M - 15” Two-Way Stage Monitor
System Type:
15" Two-way Stage Monitor
Frequency Range (-10 dB):
Frequency Response ( 3 dB):
Coverage Pattern:
Crossover Modes:
Crossover Frequency:
60 Hz - 20 kHz
70 Hz - 20 kHz
50° x 90° nominal
Passive / Bi-amp
1.1 kHz
Power Rating:
(Continuous / Program / Peak)
Passive Full-Range 800 W / 1600 W / 3200 W, 2 hrs1
Bi-amp LF: 800 W / 1600 W / 3200 W, 2 hrs1
Bi-amp HF: 75 W / 150 W / 300 W, 2 hrs1
127 dB SPL continuous (133 dB SPL peak)2
98 dB SPL
Maximum SPL:
System Sensitivity (1w @ 1m):
LF Driver:
1 x JBL 2265H, 380 mm (15 in) Differential Drive® woofer 8 Ohms
HF Driver:
1 x JBL 2452H, 100 mm (4.0 inch) diameter voice coil, 38 mm (1.5 inch) exit,
neodymium magnet compression driver 8 Ohms
Nominal Impedance:
Active Tunings:
Enclosure:
Transport:
8 Ohms Full-Range Passive
Symmetrical stage monitor, 15/18 mm, Birch plywood.
2x Integrated handle / input cup
Finish:
Black DuraFlex™ finish
Grille:
Powder coated, black, 16 gauge perforated steel with acoustically transparent
black screen backing.
Neutrik® Speakon® NL-4 (x2), one on each end
Input Connectors:
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)
Net Weight:
21 kg (46.0 lb)
1.
2.
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 the original design specifications unless otherwise stated.
Functional Block Diagram
-
1+
1-
HPF
HIGH
FREQ
NL4
IN / THRU
+
+
2+
2-
LOW
FREQ
PASSIVE
MODE
-
1+
1-
2+
2-
LPF
VRX900
NL4
IN / THRU
Serial No.
BI-AMP
1 LF: 8Ω
2 HF: 8Ω
PASSIVE
1 IN: 8Ω
2 N/C
VRX915M
+
1+
1-
HIGH
FREQ
NL4
IN / THRU
-
2+
2-
JBL PROFESSIONAL
+
Northridge, CA USA
Made in USA
LOW
FREQ
BI-AMP
MODE
-
1+
1-
2+
2-
NL4
IN / THRU
12
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INTRODUCTION TO THE VRX-AF
The VRX-AF is an array frame designed to be used for suspension of the VRX932LA and VRX918S
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 VRX-AF, VRX932LA-AF, and VRX-SMAF array frames have been precisely engineered to work together
with the VRX line of speakers as a system. 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 VRX-AF, VRX-SMAF or VRX932LA-AF 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.
Dimensional Drawings for VRX-AF
445
(17.5)
445
(17.5)
51
(2.0)
13 mm
13
(0.5)
25
65
(2.5)
(2.5)
(2.5)
330
65
65
65
(1.0)
(2.5)
(13.0)
25
(1.5)
38
(1.0)
292
(11.5)
117
(4.6)
(0.4)
10
610
(
(24.0)
Dimensions in mm (inches)
13
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INTRODUCTION TO THE VRX-SMAF
The VRX-SMAF is an array frame designed to be used for suspension of the VRX928LA and VRX915S
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 VRX-SMAF frame.
The VRX-SMAF array frame has been specifically designed to work only with the VRX928LA and VRX915S
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.
Dimensional Drawings for VRX-SMAF
457
(18.0)
127
(5.0)
0
13
(0.5)
51
(2.0)
25
(1.0)
203
(8.0)
51
(2.0)
51
(2.0)
51
(2.0)
51
(2.0)
19
(0.75)
424
(16.7)
10
(0.38)
Dimensions in mm (inches)
25
(1.0)
14
51
(2.0)
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AMPLITUDE SHADING
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
VRX932LA/VRX928LAs, 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 a VRX932LA/VRX928LA 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)
Medium Throw (0 dB)
Long Throw (+3 dB)
Frequency Response
The frequency response graph represents measurements from a single typical VRX900LA speaker, applying the
three different ACS settings: +3dB, 0dB, -3dB.
15
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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.
+3 dB
0 dB
-3 dB
Audience
Bi-Amplified System
In a bi-amplified system, array shading is accomplished by connecting separate amplifier channels to the HF
section of each VRX932LA/VRX928LA. 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.
16
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DEPLOYING THE SYSTEM
The VRX932LA/VRX928LA are flexible speaker systems that can be deployed in ground-supported or
suspended applications. The following information will help you set up your VRX932LA/VRX928LA 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 VRX932LA/VRX928LA loudspeakers on a stand or pole.
• When mounting two VRX932LA/VRX928LA 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 VRX932LA cabinets may be mounted onto either a JBL SS2-BK tripod stand or with the SS4-BK
adjustable pole mount to their companion VRX918S or SRX718S subwoofers. Do not mount VRX932LA
cabinets on top of the compact VRX915S subwoofer!
• One or two VRX928LA cabinets maybe mounted onto either a JBL SS2-BK tripod stand or their
companion subwoofer VRX915S. The larger type subwoofer SRX718S/ VRX918S
can also be used.
Single VRX932LA/VRX928LA
A single VRX932LA may be used on a tripod stand (JBL SS2-BK) or on a pole
(JBL SS4-BK) over its companion subwoofer the VRX918S 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 VRX928LA may be used on a tripod stand (JBL SS2-BK) or on a pole
(JBL SS4-BK) over its compact companion subwoofer the VRX915S or the larger
VRX918S/SRX718S subwoofer models.
The VRX932LA/VRX928LA 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 he 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.
*NOTE: VRX932LA-WH does not include pole mount features and is designed
specifically for fixed installations.
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Dual VRX932LA/VRX928LA
Unlike most conventional speakers, the VRX932LA/VRX928LA 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 VRX932LA/VRX928LA speakers on a pole.
Locking (2) VRX932LA/VRX928LA Loudspeakers Together
Any time two or more VRX932LA/VRX928LAs 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:
VRX918S with VRX932LA
VRX915S with VRX928LA
WARNING: Only the correct quick release pins supplied by JBL are to be used.
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SUSPENSION SAFETY WARNINGS!
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 VRX932LA/VRX928LA or VRX918S/VRX915S loudspeaker 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™
(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.
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Maximum Array Size
There are three variations of the VRX array frame. The VRX-AF supersedes the VRX932AF-LA. The VRX-SMAF
is solely intended for use with the VRX928LA and VRX915S. Before suspending a VRX 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.
VRX-AF Array Frame
VRX-AF Array Frame
The following table defines the maximum number of speakers that may be suspended using the VRX-AF frame.
A minimum design factor of 7:1 is maintained for all speaker configurations at or below those indicated in
the table.
Maximum number of VRX918S in array
6 5 4 3 2 1 0
0 1 2 3 4 5 6
Maximum number of VRX932LA in array
VRX932LA-AF Array Frame
VRX932LA-AF Array Frame
The following table defines the maximum number of speakers that may be suspended using the VRX932LA-AF
frame. A minimum design factor of 7:1 is maintained for all speaker configurations at or below those indicated in
the table.
Maximum number of VRX918S in array
4 3 2 1 0
1 2 3 4 5
Maximum number of VRX932LA in array
VRX-SMAF Array Frame
VRX-SMAF Array Frame
The following table defines the maximum number of speakers that may be suspended using the VRX-SMAF
array frame. A minimum design factor of 7:1 is maintained for all speaker configurations at or below those
indicated in the table.
Maximum number of VRX915S in array
4 3 2 2 2 0
Maximum number of VRX928LA in array
0 2 3 4 5 6
The VRX subwoofers must always be on top of the array.
Installing the Array Frame
The array frame is attached to the internal rigging of the VRX900 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
(A)
(B)*
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 VRX932LA-AF and VRX-AF are
deliberately designed so as not to be interchangeable. The
arms of the VRX-SMAF are already attached.
(D)
(A)
(D)
(C)
2. Place the entire array frame on top of the VRX900 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.
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*(B) does not apply to VRX-SMAF
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Suspension in Permanent Installations
For permanent installation applications a VRX 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 VRX array must employ
both top attachment points. The VRX918S and VRX915S 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 speak-
er configurations at or below those indicated in the table.
Maximum number of VRX918S in array
5 4 3 2 1 0
0 2 4 5 6 6
Maximum number of VRX932LA in array
Maximum number of VRX915S in array
4 3 2 2 2 0
Maximum number of VRX928LA in array
0 2 3 4 5 6
Array Frame Suspension
Eyebolt Suspension
Ground-Stacked, Upward Firing Arrays
Applications such as covering stadium bleachers from the playing field may be addressed
by installing the VRX932LA-AF/VRX-AF/VRX-SMAF array frame to the bottom of the array.
Up to four VRX932LA/VRX928LA loudspeakers may be locked
together and ground stacked using the VRX array frame kit, as shown.
[Warning: Do not ground stack more than four
VRX932LA/VRX928LA loudspeakers in one array].
When ground stacking VRX900LA loudspeakers, use the
VRX932LA-AF/VRX-AF/VRX-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 VRX900LA 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.
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SYSTEM PROCESSOR TUNINGS
service at Toll Free 1-800-852-5776.
NOTES
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JBL WARRANTY AND CONTACTS
The JBL Warranty on professional loudspeaker products (except for enclosures) remains in effect for five
years from the date of the first consumer purchase. JBL amplifiers are warranted for three years from the
date of original purchase. Enclosures and all other JBL products are warranted for two years from the date
of original purchase.
Who Is Protected by This Warranty?
Your JBL Warranty protects the original owner and all subsequent owners so long as: A.) Your JBL product
has been purchased in the Continental United States, Hawaii or Alaska. (This Warranty does not apply to JBL
products purchased elsewhere except for purchases by military outlets. Other purchasers should contact the
local JBL distributor for warranty information.); and B.) The original dated bill of sale is presented whenever
warranty service is required.
What Does the JBL Warranty Cover?
Except as specified below, your JBL Warranty covers all defects in material and workmanship. The following
are not covered: Damage caused by accident, misuse, abuse, product modification or neglect; damage
occurring during shipment; damage resulting from failure to follow instructions contained in your Instruction
Manual; damage resulting from the performance of repairs by someone not authorized by JBL; claims based
upon any misrepresentations by the seller; any JBL product on which the serial number has been defaced,
modified or removed.
Who Pays for What?
JBL will pay all labor and material expenses for all repairs covered by this warranty. Please be sure to save
the original shipping cartons because a charge will be made if replacement cartons are requested. Payment
of shipping charges is discussed in the next section of this warranty.
How to Obtain Warranty Performance
If your JBL product ever needs service, write or telephone us at JBL Incorporated (Attn: Customer Service
Department), 8500 Balboa Boulevard, PO Box 2200, Northridge, California 91329 (818-893-8411). We may
direct you to an authorized JBL Service Agency or ask you to send your unit to the factory for repair. Either
way, you'll need to present the original bill of sale to establish the date of purchase. Please do not ship your
JBL product to the factory without prior authorization. If transportation of your JBL product presents any unusual
difficulties, please advise us and we may make special arrangements with you. Otherwise, you are responsible
for transporting your product for repair or arranging for its transportation and for payment of any initial shipping
charges. However, we will pay the return shipping charges if repairs are covered by the warranty.
Mailing Address:
JBL Professional
8500 Balboa Blvd.
Northridge, CA 91329 USA
Shipping Address:
JBL Professional
8370 Balboa Blvd., Dock D
Northridge, CA 91329 USA
Outside the USA:
Contact the JBL Professional Distributor in your area. A
complete list of JBL Professional international distributors is
(Do not return product to this address without
first obtaining prior authorization from JBL)
Product Registration:
Customer Service:
Monday through Friday
8:00am - 5:00pm
Pacific Standard Time In the U.S.A.
(800) 8JBLPRO (800.852.5776)
On the World Wide Web:
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JBL Professional
8500 Balboa Blvd.
Northridge, CA 91329 USA
Part Number: 353551-005
03/2007
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