VRS12
VRS18
Passive Subwoofers
INSTRUCTION MANUAL
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14. Rigging Precautions: When mounting or suspending EAW Commercial loudspeaker
enclosures, it is essential that load ratings, rigging techniques, and special safety
considerations be appropriate for the installation. Use only the mounting/rigging points
on the loudspeaker enclosure intended for this purpose. The user must determine the load
requirements, dynamic loading, and any other contributing factors affecting the loudspeaker
installation. The user must determine the proper design factor for specific applications and
the required load rating of the connection to structure. Comply with all applicable federal,
state, and local regulations.
EAW Commercial strongly recommends the following rigging system practices:
•
•
•
Documentation: Thoroughly document the mounting/rigging design with detailed
drawings and parts lists.
Analysis: Have a licensed structural engineer or other qualified professional review and
approve the mounting/rigging design before its implementation.
Installation: Use personnel experienced and qualified for mounting/rigging loudspeakers
in accordance with and in compliance with all federal, state and local regulations.
DANGER: Loudspeakers should be mounted or suspended only by persons with knowledge
of the proper hardware and rigging techniques. When stacking or pole-mounting
loudspeakers, be sure that they are stabilized and secured from falling over or being
accidentally pushed over. Failure to follow these precautions may result in damage to the
equipment, personal injury, or death.
TABLE OF CONTENTS
2. INTRODUCTION....................................................................... 4
3. INSTALLATION ........................................................................ 5
4. CONNECTIONS........................................................................ 6
5. OPERATION.............................................................................. 8
6. SPECIFICATIONS..................................................................... 9
Dimensions.............................................................................. 10
Performance Graphs.............................................................. 11
7. TROUBLESHOOTING .............................................................. 12
8. SERVICE and MAINTENANCE............................................... 13
9. WARRANTY ............................................................................. 15
VRS12 and VRS18 – 3
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2. INTRODUCTION
Congratulations on the purchase of your new EAW Commercial loudspeaker. You now
own one of the finest professional audio products available – the result of exceptional
engineering and meticulous craftsmanship. Please read these instructions to get the
maximum performance from your new loudspeaker.
Each EAW Commercial loudspeaker is intended for professional use. The construction,
components, and hardware have been designed to provide robust, reliable performance for
its intended application. Please ensure that you fully understand its proper installation and
operation before use.
This manual describes the VRS12 and VRS18 passive subwoofers. They are ideal for
applications where maximum low-frequency impact is required. Both subwoofers provide
high output, authoritative bass response for the lowest musical octaves.
The VRS12 is especially suited for installations where space is restricted. It is 15.5
inches/394 mm high when mounted on its side, and is very effective where subwoofers must
be installed under a low stage.
The VRS12 and VRS18 enclosures are the same height as the VR21 and VR51 full-range
loudspeakers. Because of this, attractive arrays can be created with a single VRS12 or VRS18
between two VR21s or two VR51s.
The rugged enclosure is available in both black and white finishes. It includes a number
of threaded points for use with forged shoulder eyebolts. The powder-coated steel grille is
foam-backed, providing physical protection for the drivers as well as hiding them from view.
Features:
Applications include:
•
Companion subwoofer for all VR
Series loudspeakers
VRS12 has two 12-inch
subwoofers in a vented
enclosure
VRS18 has one 18-inch
subwoofer in a vented enclosure
VRS12 (on its side) is ideal for
installation under low stages
VRS18 (and VRS12 upright) are
the same height as VR21 and
VR51 full-range loudspeakers
Forms an attractive flown array
with the VR21 and VR51 using
optional brackets
•
•
•
•
•
•
•
•
Houses of Worship
Presentation/Meeting Rooms
Performing Arts Centers
Night Clubs
Theaters
Multi-media Systems
Theme Parks
•
•
•
•
Retail Spaces
•
•
Five-year warranty
4 – VRS12 and VRS18
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3. INSTALLATION
Unpacking and Inspection
Visually inspect the outside of the shipping carton and check for any shipping damage.
After unpacking, if you find concealed damage to the loudspeaker, save the packing materials
for the carrier’s inspection, notify the carrier immediately, and file a shipping damage claim.
Although EAW Commercial will help in any way possible, it is always the responsibility of
the receiving party to file any shipping damage claim. The carrier will help prepare and file
this claim.
Mounting Precautions
The loudspeaker is fitted with threaded mounting
holes, suitable for attaching user-supplied forged shoulder
eyebolts and flying hardware. The details of the mounting
points are shown in the drawings on page 10.
WARNING: Installation should only be done by
an experienced technician. Improper installation
may result in damage to the equipment, injury or
death. Make sure that the loudspeaker is installed
in a stable and secure way in order to avoid any
conditions that may be dangerous for persons or structures:
•
•
•
•
Check to make sure that the support surface (e.g., wall, etc.) has the necessary
mechanical characteristics to support the weight of the loudspeaker without the
danger of it falling.
Always use support elements suitable for the material of the wall that will support
the loudspeaker (e.g., screw anchors for bricks, screw anchors for cement, etc.).
Consult a building professional for the proper mounting hardware.
Before suspending the loudspeaker, carefully check all the components to be used to
make sure there is no damage, deformation, corrosion and/or missing or damaged
parts that could reduce the safety of the installation.
Consult a professional rigger or structural engineer prior to suspending loudspeakers
from a structure not intended for that use. Always know the working load limit of the
structure supporting the loudspeaker. Always make sure that the rigging hardware
minimum rating is at least five times the actual load.
•
Avoid installing the loudspeaker in places exposed to harsh weather conditions.
VRS12 and VRS18 – 5
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4. CONNECTIONS
WARNING: To prevent the risk of electric shock, do not connect the loudspeaker
with the amplifier switched on. The protective cover over the terminal strip is a safety
feature per CE requirements. Replace this cover after making the signal connections.
1. Remove the insulating cover from the loudspeaker input
terminal strip.
2. The positive (+) input terminal of the loudspeaker connects
to the positive (+) output of your power amplifier.
--
IN
+
UT
3. The negative (–) terminal of the loudspeaker connects to
the negative (–) output of your power amplifier.
P
4. Using a small phillips screwdriver, secure the connections.
CAUTION:
SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED
TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS
5. Replace the insulating cover over the loudspeaker input
terminal strip.
Loudspeaker Cables
•
Use loudspeaker cables with a minimum
conductor size for the length you need as
listed in these tables. This will minimize
power losses to less than 0.5 dB. The
cable lengths listed are “up to” lengths.
For in-between lengths, use the next larger
conductor gauge. Using larger than the
recommended conductor size is always
permissible. Using smaller than recommended
conductor size will result in higher power
losses.
Minimum AWG 4 ohm 8 ohm
18
16
14
12
10
10 ft
25
25 ft
50
25
75
50
125
200
100
Min Metric WG 4 ohm 8 ohm
12
14
16
20
25
3 m
8
8 m
15
•
•
The recommended conductor gauges are
listed for AWG (American Wire Gauge) and
Metric WG (Metric Wire Gauge). Note that
smaller AWG numbers = larger conductors
and smaller Metric WG numbers = smaller
conductors. The Metric WG is equal to ten
8
25
15
30
40
60
times the nominal conductor diameter in millimeters.
For cable lengths over 200 feet / 60 m at 8 ohms, and over 100 feet / 30 m at 4 ohms,
the conductor sizes needed for less than 0.5 dB power losses are rarely practical
for physical and cost reasons. As a practical compromise for these situations the
recommended conductor gauge is 10 AWG or 25 metric.
6 – VRS12 and VRS18
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Precautions
•
To prevent inductive phenomena causing humming or distortion, the speaker cables
should not be run together with electrical energy conductors, microphone cables, or
line-level audio lines.
•
•
Use speaker cables that have markings to distinguish the polarity, such as insulation
or conductors of different colors.
Before using the loudspeaker, carefully check that all the connections have been
made correctly to make sure there are no accidental short circuits that could cause
electrical sparks.
•
Verify that the polarity of the connections to all of your loudspeakers is correct. When
more than one loudspeaker reproduces the same frequencies, but with opposite
polarity, there will be sound cancellations. Therefore, if any of the loudspeakers
are wired so that the +/- connection polarity is reversed with respect to the others,
incorrect reproduction will result. Most notably, the bass response will suffer. This
is especially true when loudspeakers are situated in adjacent positions where the
sound waves readily interact with each other.
VRS12 and VRS18 – 7
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5. OPERATION
Signal Processing
The loudspeakers have no internal crossover, allowing maximum power transfer to the
woofers. External signal processing is required to shape the line-level signals before they
reach your power amplifier. The recommended high-pass, low-pass, and EQ setting are
shown in the specifications table on the next page.
Choosing a Power Amplifier
There is no exact answer to the question of what amplifier size you should use for a
loudspeaker. The loudspeaker power rating in EAW Commercial’s specifications only means
it has passed a standard power test. This provides a rating that can be used as a point of
comparison with other loudspeakers. This rating does not necessarily correspond to the best
amplifier size to use nor is it a measure of a “safe” amplifier size to use. Rather, the amplifier
should be sized according to both the sound levels required and the type of audio signals
that will be reproduced. If you are unsure of how to determine this, consult with a qualified
professional or contact EAW Commercial Technical Support.
Preventing damage to the loudspeaker is a function of operating your audio system so
that the loudspeaker is not stressed beyond its design limits.
Operating Tips
•
•
•
•
Do NOT drive any of your electronic equipment into clipping, particularly the power
amplifiers. This can easily damage the loudspeaker.
If driven into clipping, even an amplifier with a power output rating lower than the
loudspeaker’s power rating can cause damage to a loudspeaker.
Avoid sustained microphone feedback. This can quickly cause failure of high-
frequency drivers in your system.
Avoid extreme boosts on equalizers as these can cause excessive input to the drivers
at the boosted frequencies. Generally, cutting frequencies is preferred to adjust the
frequency response.
•
With appropriate signal processing, your loudspeaker should produce exceptionally
good sound. If it is used in a room with problematic acoustics, there is little you can
do to overcome the room problems with electronic adjustments. Your best solution
is careful placement and aiming of the loudspeaker so most of the sound is directed
only at the audience.
•
•
Most EAW Commercial loudspeakers are capable of sound levels that can be
damaging to human hearing. Take precautions so that audiences are not exposed
to such levels. If you must expose yourself to these kinds of volume levels, wear
adequate hearing protection.
Take care when moving or lifting the loudspeaker. Injury to you or damage to the
loudspeaker can result from careless handling.
8 – VRS12 and VRS18
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6. SPECIFICATIONS
Model
VRS12
VRS18
Woofer
12” x 2
18” x 1
Woofer Loading
Bass reflex
Bass reflex
Operating Range (processed, -10 dB)
Axial Sensitivity (whole space SPL)
Peak Sensitivity (whole space SPL)
Input Impedance - Nominal
Input Impedance - Minimum
Power Handling
32 Hz - 150 Hz
92 dB, 32 Hz to 150 Hz
101 dB, 20 Hz to 20 kHz
4 ohm
31 Hz - 145 Hz
93 dB, 31 Hz to 145 Hz
98 dB, 20 Hz to 20 kHz
8 ohm
4.4 ohm @ 150 Hz
500 W, 45 V @ 4ohms
119 dB
9.1 ohm @ 110 Hz
500 W, 64 V @ 8 ohms
120 dB
Maximum SPL, Average
Maximum SPL, Peak
125 dB
126 dB
Recommended High-Pass
≥ 25 Hz, 24 dB/octave
Butterworth
≥ 25 Hz, 24 dB/octave
Butterworth
Recommended Low-Pass
100 Hz, 24 dB/octave
Butterworth
100 Hz, 24 dB/octave
Butterworth
Highest Recommended Low-Pass
200 Hz
150 Hz
Recommended EQ
Height
46 Hz, +4 dB, Q=1.6
30.00 in/762 mm
15.50 in/393.7 mm
30.65 in/778.4 mm
± 0.1 in/ 2.5 mm
85 lb/38.5 kg
50 Hz, +3 dB, Q=2
30.00 in/762 mm
24.56 in/623.8 mm
20.27 in/514.8 mm
± 0.1 in/ 2.5 mm
80 lb/36.3 kg
Width
Depth
Dimension Tolerance
Weight
Disclaimer
EAW Commercial continually engages in research related to product improvement, new
materials, and production methods. Design refinements are introduced into existing products
without notice as a routine expression of that philosophy. For this reason, any current EAW
Commercial product may differ in some respect from its published description, but will
always equal or exceed the original design specifications unless otherwise stated.
“EAW Commercial” is a trademark of LOUD Technologies Inc.
All other brand names mentioned are trademarks or registered trademarks of their
respective holders, and are hereby acknowledged.
VRS12 and VRS18 – 9
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VRS12 Dimensions and Mounting Points
2.46"(62.2)
0.65"
(16.4)
30.65"
(778.4)
13.00"
(330.2)
TOP
(DIMENSIONS APPLY
4.00"(101.6)
TO TOP AND BOTTOM)
C
L
VRS12
11.82"
(300.23)
4.00"(101.6)
13.00"
(330.2)
15.50"
(393.7)
C
L
26.06"
(661.92)
30.00"
(762.0)
C
L
(DIMENSIONS
APPLY TO
BOTH SIDES)
FRONT
BACK
RIGHT SIDE
NOTES: 1. DIMENSIONS ARE IN INCHES, DIMENSIONS IN BRACKETS ARE MILLIMETERS.
2. DIMENSION TOLERANCE IS ± 0.1" (2.5 MM)
3. SYMBOL
INDICATES MOUNTING POINT, 3/8 INCH-16 THREADED HOLE (PI ANGLE)
VRS18 Dimensions and Mounting Points
20.88"
(530.35)
C
L
2.46"(62.2)
13.00"
(330.2)
4.00"(101.6)
VRS18
FRONT
DIMENSIONS APPLY
TO TOP AND BOTTOM
20.27"
(514.8)
24.56"
(623.8)
0.65"
(16.4)
4.00"
(101.6)
13.00"
(330.2)
C
C
L
L
30.00"
(762.0)
26.06"
(661.92)
C
L
GRILLE PARTIALLY
SHOWN
RIGHT SIDE
DIMENSIONS APPLY
TO BOTH SIDES
FRONT
BACK
10 – VRS12 and VRS18
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PERFORMANCE GRAPHS
VRS12 Impedance vs Frequency
VRS18 Impedance vs Frequency
100
100
10
10
1
1
10
100
1000
10k 20k
10
100
1000
10k 20k
Frequency (Hz)
Frequency (Hz)
VRS12 Axial Response vs Frequency
VRS18 Axial Response vs Frequency
120
120
Unprocessed
Unprocessed
Processed
Processed
110
100
90
110
100
90
80
80
70
70
60
60
10
100
1000
10k
20k
10
100
1000
10k 20k
Frequency (Hz)
Frequency (Hz)
Processed:
Before amplification, the audio signal is processed
by the recommended high-pass, low-pass and EQ
settings (see below).
VRS12 Recommended Processor
Response
VRS18 Recommended Processor
Response
20
20
10
0
10
0
-10
-20
-30
-40
-10
-20
-30
-40
10
100
1000
10k 20k
10
100
1000
10k 20k
Frequency (Hz)
Frequency (Hz)
High-pass:
Low-pass:
EQ:
25 Hz, 24 dB/octave Butterworth
100 Hz, 24 dB/octave Butterworth
46 Hz, Gain 4 dB, Q=1.5
High-pass:
Low-pass:
EQ:
25 Hz, 24 dB/octave Butterworth
100 Hz, 24 dB/octave Butterworth
50 Hz, Gain 3 dB, Q=2
VRS12 and VRS18 – 11
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7. TROUBLESHOOTING
Loudspeaker difficulties usually fall into one of the following categories. The causes for
each are listed in the most likely order of probability.
No Sound or Low Output
•
Loudspeaker cables or connectors are not wired correctly or are faulty. Check
all cabling, referring to these instructions for the correct connections. The best
way to check a suspect cable is to swap it with a known good cable. Check the
loudspeaker’s input panel to verify correct cable connections.
•
•
Electronic equipment is not turned on, or the level controls are not adjusted properly.
Make sure that all equipment in the signal path is powered up, and that all controls
are set to appropriate levels for normal operation.
Loudspeaker is not working. Connect the loudspeaker cable to a known good
loudspeaker, leaving all equipment set to the same levels. If the problem disappears,
the loudspeaker is probably not working. Contact EAW Commercial Technical Support
for appropriate troubleshooting.
Distorted Sound
•
The power amplifier is clipping. The signal level is exceeding the limits of your
system and you must reduce the level.
•
Other electronic equipment is being overdriven. Ensure that no equipment in the
signal chain is being over driven. For example: input(s) or summing bus in the mixing
console, equalizers etc.
•
Driver(s) not working properly. Contact EAW Commercial Technical Support for
appropriate troubleshooting.
Partial Sound (frequency band missing)
•
Incorrect EQ settings in the electronic equipment. Ensure that all EQ settings and
filters on the mixing console, preamplifier, or other equipment are set for normal
operation. Ensure that level controls on electronic crossovers and associated
amplifiers are correctly set, and that all cables and connections for such equipment
are connected and working properly.
•
Driver not working properly. Contact EAW Commercial Technical Support for
appropriate troubleshooting.
12 – VRS12 and VRS18
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8. SERVICE and MAINTENANCE
Maintenance
Usually, your EAW Commercial loudspeaker will not require regular maintenance for
normal use. However, you can do several things to keep your loudspeaker in good operating
and cosmetic condition.
•
•
•
•
Testing: Periodically test your loudspeaker for proper performance. A simple test is
to play a CD through it using well-defined, articulate, wide-range program material.
Listen to ensure all drivers are working properly and for any evidence of distortion or
other extraneous sounds. Test at several volume levels: very low, normal, and high.
Mounting/Rigging: Any mounting or rigging hardware should be regularly inspected
for security, wear, deformation, corrosion, and any other circumstances that may
affect the load-handling capability. Immediately remove from service and replace any
hardware whose load-handling capability may be compromised.
Cleaning: Cleaning the exterior of the enclosure will depend on the type of “dirt.”
Dust, food spills, or similar contaminants can usually be removed with a cloth
dampened with water, or a mild household cleaner. Avoid using any strong solvents
as this may damage the finish. Turn the amplifiers off before cleaning.
Scratches or Dents in Wood Enclosures: Minor scratches on the enclosure can be
painted over with an outdoor latex paint, or simply a colored in with a “Sharpie” or
artist’s marking pen. More serious gouges or dents should be sanded out, filled with
wood putty, and repainted. Touch-up paint in pints and quarts is available through
EAW Commercial Technical Support.
VRS12 and VRS18 – 13
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Service
If your loudspeaker should require servicing, please follow these instructions:
1. Call EAW Commercial Tech Support at 1-888-337-7404, 7 am to 5 pm PST
(Monday-Friday), to verify the problem and obtain a Service Request Number. Be sure
to have the serial number of the unit when you call. You must have a Service Request
Number in order to obtain warranty service at the factory or at an authorized service
center. You can also email EAW Commercial Tech Support at:
2. Pack the unit in its original packaging. THIS IS VERY IMPORTANT. LOUD Technologies
is not responsible for any damage that occurs during shipping due to non-
conventional packaging. Original packaging helps to minimize the possibility of
shipping damage.
3. Include a legible note stating your name, (no P.O. boxes), daytime phone number,
Service Request Number, and a detailed description of the problem, including how
we can duplicate it.
4. Write the Service Request Number in BIG BOLD PRINT on top of the box.
5. Tech Support will tell you where to ship the unit when you call for a Service Request
Number. We suggest insurance for all forms of cartage.
EAW Commercial Technical Support
Phone (USA/Canada)
888-337-7404
Phone
Fax
425-892-6503
425-485-1152
Address
One Main Street
Whitinsville, MA 01588
Web site
e-mail
14 – VRS12 and VRS18
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9. WARRANTY
Warranty: LOUD Technologies Inc. requires its authorized EAW Commercial distributors
abide by the following warranty terms for all EAW Commercial brand products (all dates
are from the date of delivery from an Authorized EAW Commercial Distributor to the end
user/installation site):
Loudspeakers – 5 years; Active Electronics – 5 years; Accessories – 2 years.
What Is Covered: Defects in workmanship and materials and against malfunctions. EAW
Commercial distributors must remedy all such defects and malfunctions without charge
for parts or labor if the warranty applies. Final determination of warranty coverage lies
solely with each authorized EAW Commercial distributor.
What Is Not Covered: This warranty does not extend to damage or malfunctions
resulting from, but not limited to, shipment, improper installation, misuse, neglect,
abuse, normal wear, accident, or to any product on which the serial number has been
modified or removed. Exterior defects in or damage to the exterior appearance are
specifically excluded from this warranty. EAW Commercial distributors shall not be liable
for incidental or consequential damages resulting from the use of EAW Commercial
products. Repairs and/or modifications by other than an Authorized EAW Commercial
Distributor automatically voids this warranty.
VRS12 and VRS18 – 15
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EAW Commercial | One Main Street | Whitinsville, MA 01588 USA
TEL toll free within US/Canada 888.337.7404 | TEL outside US 425.892.6503 | FAX 425.485.1152
© 2004 LOUD Technologies Inc. All Rights Reserved. EAW Commercial is a registered trademark of LOUD Technologies Inc.
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