Niles OS7.5 Istruzioni operative originali
OS
7. 5
OS6.5
OS5.5
MODELS
OS
7. 5
OS6.5
OS5.5
Indoor/Outdoor Loudspeakers
BLENDING HIGH FIDELITY
AND ARCHITECTURE®
INSTALLATION & OPERATION GUIDE
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CONGRATULATIONS
Thank you for choosing Niles OS Indoor/Outdoor loudspeakers. With proper
installation and operation, you’ll enjoy years of trouble-free use.
Niles manufactures the industry’s most complete line of custom installation
components and accessories for audio/video systems. To learn more about
Niles products, visit our website: www.nilesaudio.com or call us at 800-BUY-HIFI
(800-289-4434).
TABLE OF CONTENTS
INTRODUCTION 2
FEATURES & BENEFITS 3
PARTS GUIDE 5
INSTALLATION CONSIDERATIONS 7
PAINTING OS SERIES LOUDSPEAKERS 12
INSTALLATION 15
OPERATION 18
SPECIFICATIONS 19
WARRANTY REGISTRATION CARD 21
LIMITED WARRANTY 22
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Niles once again raises the bar. With our first OS Indoor/Outdoor models we
revealed a radical new understanding of loudspeaker capabilities. Niles original
OS Indoor/Outdoor loudspeakers are constantly praised for their ability to deliver
exemplary reliability and outstanding sound quality. These attributes have made
Niles OS Indoor/Outdoor loudspeakers the best selling loudspeakers in their class.
The goal of our new OS Indoor/Outdoor line-up is to raise this bar with refined
appearance and superior sonic performance. Once again establishing a
benchmark by which all others are judged. The new Niles OS Indoor/Outdoor
loudspeakers owe much of their performance and sound quality advantage to
design elements pioneered in the award-winning Niles DS Directed Soundfield™
loudspeakers. Their engineering advances come from our integrated approach to
driver and cabinet design. By integrating the woofer basket into the baffle of the
cabinet we are able to increase the woofer cone-area to cabinet-width ratio. Thus
enabling OS Indoor/Outdoor loudspeakers to provide levels of bass performance
that substantially exceed their physical size. However, deeper and more powerful
bass isn’t the only refinement in the new OS Indoor/Outdoor line-up. A new and
modern style enables OS Indoor/Outdoor loudspeakers to blend seamlessly with
the architectural elements both indoors and out. After the installation is complete,
you will be astonished by the experience of hearing such clean and powerful
sound coming from such elegant appearing loudspeakers.
2
INTRODUCTION
INTRODUCTION
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Patent Pending Integrated Woofer/Baffle Assembly
Increases the woofer cone-area to cabinet-width ratio for enhanced bass output
Interlaced Carbon Fiber Woofer Cone
Reduces breakup and lowers distortion
Butyl Rubber Woofer Cone Surround
Damps resonance and provides exceptional durability
Dispersion Stabilizer
Distributes midrange tones for clear off-axis sound
Tri-laminate Teteron Dome Tweeter
1" fluid-cooled tweeter provides ultra-wide dispersion for clear, detailed and
extended high-frequencies
Weatherproof Engineering
Enables OS loudspeakers to handle extreme hot, cold and moist environments,
exceeding the military’s strict anti-corrosion specification MIL-STD-883D
Advanced Material Science
Elevates appearance and longevity of the cabinet and grille, plus enhances the
performance of the woofers, tweeters and crossovers
Architectural Friendly Design
Delivers stellar acoustical performance yet tucks discretely away into corners and
under eaves
3
FEATURES & BENEFITS
FEATURES & BENEFITS
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Low Diffraction Grille and Front Baffle
Ensures that the sound waves emanating from the woofer and tweeter are not
reflected by the surrounding parts of the loudspeaker for precise imaging and
acoustical accuracy
Rigid, Acoustically Inert Cabinet
Prevents transmission of unwanted vibrations for clean and dynamic bass response
All-Weather Versatility
Reduces installation limitations to provide great sound from the beaches of Miami
to the harsh winters of Minneapolis
Home Theater Applicability
Enables OS loudspeakers to be used as left, center, right, or surround loudspeakers
in home theater systems
Integrated Mounting Bracket and Shelf Stand
Provide a variety of secure, quick and easy mounting solutions
Tapered Shape
Facilitates mounting in corners and under eaves
Inverted Gold Plated 5-Way Binding Posts
Repel moisture and ensure positive connections in virtually any conditions over
long periods of time
4
FEATURES & BENEFITS
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5
PARTS GUIDE
PARTS GUIDE
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a
d
d
d
b
b
c
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6
PARTS GUIDE
PARTS GUIDE
Figure 1 OS .5 Parts Guide
a. Mounting Bracket
b. Nail Hole
c. Wire Hole
d. Screw Hole
e. Bracket Knob
f. Grille
g. Cabinet
h. Binding Posts
i. Threaded Insert (1/4"-20 Thread size)
j. Shelf Stand
NOTE: Bracket and Shelf Stand are used depending upon installation requirements.
See Installation Instructions.
h
i
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Tools and Materials Required
• A wire stripper
• A pencil
• A level (optional)
• Three screws or bolts suitable for the mounting surface
• The proper screwdriver for your mounting hardware
• A drill bit of the right size and type
• An electric drill
Wiring
The OS loudspeakers connect to your receiver or amplifier using 2-conductor
loudspeaker wire (See Figure 2). For most applications, we recommend using 16
or 18 gauge wire. For wiring runs longer than 80 feet, we recommend 14 gauge
wire. The binding posts on OS loudspeakers accommodate up to 12 gauge wire
directly. Larger sizes can be accommodated using spade, banana, or pin
connectors.
When you run wire inside walls, outdoors or in marine installations, special
jacketing or conduit is required for a trouble-free installation and conformation to
the local and national building codes. If you are not sure of the correct wire jacket
or type of conduit to use, consult a professional audio/video installer, building
contractor, or the local building and inspection department.
Incorporating a Volume Control
It’s possible to control the volume of the sound at the loudspeaker location. Plan to
wire the system so that each pair of loudspeakers has its own volume control. Niles
makes a wide range of indoor and outdoor volume controls with and without
muting capabilities. Consult your local Niles dealer for more information. Volume
controls are connected in line with the loudspeaker, so you must connect the wire
from the amplifier to the volume control and then from the volume control to the
loudspeaker (See Figure 3).
7
INSTALLATION CONSIDERATIONS
INSTALLATION CONSIDERATIONS
TECH TIP
Wire size is expressed by its AWG (American Wire
Gauge) number. The lower the number, the larger
the wire, i.e. twelve AWG is physically larger than
fourteen AWG.
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Recommended Amplifier Power
For optimum performance, we recommend an amplifier with a power rating of: five
(5) to one hundred (100) watts per channel for the 0S 5.5 loudspeaker; five (5) to
one hundred twenty five (125) watts per channel for the OS 6.5 loudspeaker; five
(5) to one hundred fifty (150) watts per channel for the OS 7.5 loudspeaker.
Ironically, most loudspeakers are not damaged by large amplifiers but by small
amplifiers. If you are playing at high volume, a small amplifier will run out of power
very quickly. When an amplifier runs out of power it creates damaging “clipping”
distortion. A large amplifier will play at the same volume without distorting. See the
section “Operation” for more information about clipping distortion.
Placing Loudspeakers for the Best Sound Quality
An OS loudspeaker’s dispersion pattern is very broad. This allows good sound
quality over an extremely large listening area. However, if a single pair is positioned
to provide coverage of a very large room or patio, you will have “hot spots” of loud
sound when you are near the loudspeakers. The best way to avoid hot spots for a
large space is to use several pairs of loudspeakers evenly spaced throughout the
room. A good rule of thumb is to install a pair of loudspeakers for every 200 to 400
square feet of listening area. Your local Niles dealer is a good source for advice on
loudspeaker placement for your particular installation.
8
INSTALLATION CONSIDERATIONS
Figure 2
Wiring directly from a receiver
or amplifier
Figure 3
Incorporating a volume control
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When using more than one pair, it is usually best to alternate a left channel and
then a right channel, so that you have the best possible stereo coverage possible.
The position of the loudspeakers and their surroundings play a very important role
in how a stereo image is created. You should experiment to find the very best
position for your loudspeakers. Here are some guidelines to make the process
quick and easy.
Make sure you are not blocking or reflecting the sound off of furniture or other
objects. You should have a direct line of sight with the front of the loudspeaker. To
determine the best position, measure the distance between the ideal listening
position and the wall you plan to mount the loudspeakers on. Try to place the
loudspeakers so that they are at least one-half the listening distance apart (this
maintains a large, pleasant stereo “image”) and less than the entire listening
distance (this avoids a “hole-in-the-middle” effect). For example; if you are ten feet
back from the wall, the loudspeakers should be between five and ten feet apart (See
Figure 4).
9
INSTALLATION CONSIDERATIONS
Figure 4
Illustration depicts the optimum
placement zone for a listening
distance of ten feet.
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