Kenwood Speaker System VR61 User Manual

VR61  
VR62  
Passive Full-Range Loudspeakers  
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  
1. SAFETY INSTRUCTIONS........................................................ 2  
2. INTRODUCTION....................................................................... 4  
3. INSTALLATION ........................................................................ 5  
4. CONNECTIONS........................................................................ 8  
5. OPERATION.............................................................................. 10  
6. SPECIFICATIONS..................................................................... 11  
Dimensions.............................................................................. 11  
Performance Graphs.............................................................. 12  
7. TROUBLESHOOTING .............................................................. 13  
8. SERVICE and MAINTENANCE............................................... 14  
9. WARRANTY ............................................................................. 15  
VR61 and VR62 – 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 VR61 and VR62 full-range loudspeakers. These offer an  
attractive design and good acoustic features for quality speech and music reproduction. The  
extended-range drivers guarantee high efficiency, and a wide angle of coverage over the  
entire range reproduced.  
The VR61 and VR62 provide exceptional fidelity for background and foreground music  
applications. Their speech projection capabilities also make them highly effective as fill or  
delay loudspeakers in larger audio systems. The rotatable HF horn allows the enclosure to  
be mounted either vertically or horizontally with the beamwidth oriented as required. The  
rugged birch enclosure is available in both black and white finishes. The powder-coated steel  
grille is foam-backed, providing physical protection for the drivers as well as hiding them  
from view.  
Features:  
Applications include:  
Ultra-compact 2-way  
loudspeaker  
Under Balcony Fill  
Stage Lip Fill  
VR61 has one 6-inch woofer  
VR62 has two 6-inch woofers  
1-inch exit compression driver,  
with protection circuit  
Rotatable high-frequency horn  
with 60 x 90 degree beamwidth  
Passive crossover for  
Multimedia Systems  
Theaters  
Distributed Systems  
Houses of Worship  
Theme Parks  
Retail Spaces  
economical, single-amplifier  
operation  
Optional 70 V / 100 V multi-tap  
transformer  
Includes mounting bracket  
Five-year warranty  
4 – VR61 and VR62  
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3. INSTALLATION  
Unpacking and Inspection  
Visually inspect the outside of the shipping carton and check for any 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 mounting bracket provided can be  
used for wall mounting the loudspeaker.  
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.). Due  
to various construction methods and materials used today, the hardware for securing  
the bracket to the mounting surface is not supplied. Consult a building professional  
for the proper mounting hardware before mounting the bracket.  
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.  
VR61 and VR62 – 5  
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Mounting Instructions  
1. Remove the screw from each end of the enclosure as shown below.  
2. Align the bracket slots with the mounting holes on each end of the enclosure. Make  
sure the four openings in the bracket arms face upward.  
3. Onto each of the two supplied hex-head screws, place a lock washer, and a flat  
washer. Thread them at least three complete turns into both of the enclosure’s side  
mounting holes, and tighten them securely.  
4. The bracket /enclosure assembly may be mounted vertically or horizontally.  
5. The enclosure may be adjusted to any angle by loosening the 2 hex-head screws,  
turning the enclosure to the desired angle, and then re-tightening the screws.  
1/4 INCH FLAT WASHER  
2 PLACES  
BRACKET/WALLMOUNT  
SCREW 1/4 INCH-20  
X 1.25 INCH LONG  
HEX HEAD  
2 PLACES  
1/4 INCH LOCK  
WASHER  
2 PLACES  
REMOVE SCREWS  
FROM BOTH SIDES  
MOUNTING POINT  
1/4-20 THREADED HOLE  
VR61  
VR62  
6 – VR61 and VR62  
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Bracket Dimensions  
VR61 10.00"(254)  
VR62 16.00"(406.4)  
0.40" x 2.25" Full radius  
(10.16 x 57.15)  
3.00"(76.2)  
0.13"(3.3)  
8.00"(203.2)  
2.00"(50.8)  
11.50"  
(292.1)  
VR61 15.69"(398.5)  
VR62 22.44"(570.0)  
0.31" x 1.38" Full radius  
(7.87 x 35.05)  
NOTE: Dimensions are in inches, Dimensions in brackets are mm  
Tolerance ± 0.03"(0.8 mm)  
Horn Rotation Instructions  
The high frequency horn can be rotated through 90 degrees to allow you to choose  
the best horn pattern for your installation.  
From the factory, the horn is set to give a 90 degrees horizontal horn pattern if the  
loudspeaker is mounted vertically.  
If you mount the loudspeaker horizontally, you can rotate the horn through 90 degrees  
to compensate. This is done using a medium phillips screwdriver as follows:  
1. Remove all the screws attaching the grille to the  
enclosure, and gently remove the grille.  
2. Remove the four screws attaching the horn to the  
enclosure.  
3. Gently pry the horn assembly away from the  
enclosure (it may be stuck due to the gasket seal).  
Support the horn so it does not drop when it  
comes free.  
4. Rotate the horn through 90 degrees (the horn is  
marked with 60 and 90 on the edges to show the direction  
of the pattern). Be careful not to pull on the speaker wires.  
5. Reattach the horn to the enclosure using the four screws.  
6. Replace the grille and secure the screws holding it to the enclosure.  
VR61 and VR62 – 7  
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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
HF  
LF  
AMP  
XVR  
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.  
8 – VR61 and VR62  
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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 are 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.  
VR61 and VR62 – 9  
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5. OPERATION  
Signal Processing  
Sometimes external signal processing is desirable to “voice” the loudspeaker to  
accommodate particular program material, less than optimum acoustics, feedback control, or  
personal taste. For these purposes, use a suitable electronic signal processor. This can be as  
simple as a 1/3 octave graphic equalizer or a fully capable DSP (digital signal processor) such  
as the EAW Commercial DX810, or the EAW MX8750.  
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.  
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.  
10 – VR61 and VR62  
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6. SPECIFICATIONS  
Model  
VR61  
VR62  
Woofer  
Woofer Loading  
Tweeter  
6” x 1  
Baffle, sealed  
1” exit  
6” x 2  
Baffle, sealed  
1” exit  
C
L
TOP  
DIMENSIONS APPLY  
TO TOP AND BOTTOM  
Compression  
60 x 90 Horn  
Compression  
60 x 90 Horn  
D
Tweeter Loading  
4.56 in  
115.8 mm  
VR62  
VR61  
Operating Range  
(-10 dB)  
85 Hz - 20 kHz  
80 Hz - 20 kHz  
20˚  
W
Horizontal Beamwidth 90 degrees  
90 degrees  
60 degrees  
- Nominal (rotatable)  
Vertical Beamwidth  
- Nominal (rotatable)  
60 degrees  
Axial Sensitivity  
(whole space SPL)  
90 dB  
85 Hz to 20 kHz  
92 dB  
80 Hz to 20 kHz  
Peak Sensitivity  
(whole space SPL)  
93 dB  
20 Hz to 20 kHz  
96 dB  
20 Hz to 20 kHz  
H
Input Impedance  
- Nominal  
8 ohm  
8 ohm  
Input Impedance  
- Minimum  
3.6 ohm  
@ 2660 Hz  
7.1 ohm  
@ 225 Hz  
Recommended High  
Pass Filter  
75 Hz,  
24 dB/octave  
Butterworth  
70 Hz,  
24 dB/octave  
Butterworth  
Power Handling  
150 W  
35 V @ 8 ohms  
250 W  
45 V @ 8 ohms  
H
Calculated Maximum  
SPL Average  
112 dB  
116 dB  
Calculated Maximum  
SPL Peak  
118 dB  
122 dB  
FRONT  
REAR  
Mounting Supplied  
Height  
Width  
Bracket  
Bracket  
15.50 in /393.7 mm 22.25 in/565.1 mm  
9.50 in/241.3 mm 9.50 in/241.3 mm  
10.65 in/270.4 mm 10.65 in/270.4 mm  
Depth  
Dimension Tolerance  
Weight  
± 0.1 in/2.5 mm  
16 lb/7.3 kg  
± 0.1 in/2.5 mm  
25 lb/11.3 kg  
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.  
VR61 and VR62 – 11  
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PERFORMANCE GRAPHS  
VR61 Impedance vs Frequency  
VR62 Impedance vs Frequency  
100  
100  
10  
10  
1
1
10k 20k  
10  
100  
1000  
10k 20k  
10  
100  
1000  
Frequency (Hz)  
Frequency (Hz)  
VR61 Axial Response vs Frequency  
VR62 Axial Response vs Frequency  
120  
110  
100  
90  
120  
110  
100  
90  
80  
80  
70  
70  
60  
60  
10  
100  
1000  
10k 20k  
10  
100  
1000  
10k 20k  
Frequency (Hz)  
Frequency (Hz)  
VR61 Beamwidth vs Frequency  
VR62 Beamwidth vs Frequency  
360  
100  
360  
100  
10  
10  
Horizontal  
Vertical  
Horizontal  
Vertical  
1
1
100  
1000  
10k  
20k  
100  
1000  
10k  
20k  
Frequency (Hz)  
Frequency (Hz)  
12 – VR61 and VR62  
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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 over-driven. Ensure that no equipment in the  
signal chain is being overdriven. 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.  
The crossover network inside the loudspeaker is not working properly. Contact EAW  
Commercial Technical Support for appropriate troubleshooting.  
VR61 and VR62 – 13  
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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.  
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.  
14 – VR61 and VR62  
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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  
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.  
VR61 and VR62 – 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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