Niles OS5.3Si Original operating instructions
OS6.3Si
OS5.3Si
MODELS
OS6.3Si
OS5.3Si
Stereo Input Indoor/Outdoor Loudspeaker
BLENDING HIGH FIDELITY
AND ARCHITECTURE®
INSTALLATION & OPERATION GUIDE
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CONGRATULATIONS
Thank you for choosing a Niles OS Indoor/Outdoor Loudspeaker. 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 THE OS SERIES LOUDSPEAKER 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 an elegant appearing loudspeaker.
2
INTRODUCTION
INTRODUCTION
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Stereo Input “Si” Design
Plays both left and right channels to provide broad sound coverage and a stereo
effect from a single loudspeaker
Patent Pending Integrated Woofer/Baffle Assembly
Increases the woofer cone-area to cabinet-width ratio for enhanced bass output
Mica-Filled Polypropylene Woofer Cone
Reduces breakup and lowers distortion
Butyl Rubber Woofer Cone Surround
Damps resonance and provides exceptional durability
Dual Voice Coil Woofer
Delivers both left and right channels from one loudspeaker
Dual UltraSilk™ Dome Tweeters
1" fluid-cooled tweeters provides ultra-wide dispersion for clear, detailed and
extended high-frequencies
Stereo Imaging Tweeter Array
Directs the high frequency sounds from both the right and left channels from one
loudspeaker
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
3
FEATURES & BENEFITS
FEATURES & BENEFITS
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Architectural Friendly Design
Delivers stellar acoustical performance yet tucks discretely away into corners and
under eaves
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 speakers 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
Figure 1 OS-5.3Si and OS-6.3Si Parts Guide
a. 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)
a
dd b
bc
g
g
f
e
e
d
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6
PARTS GUIDE
PARTS GUIDE
h
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 loudspeaker connects to your receiver or amplifier using 2x2-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 the OS loudspeaker will 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.
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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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 loudspeaker has it’s own volume control. Niles makes
a wide range of indoor and outdoor volume controls. Consult your local Niles
dealer for more information. Volume controls are connected in line with the
speaker, 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).
Recommended Amplifier Power
For the OS 5.3Si loudspeaker, we recommend an amplifier with a power rating of
five (5) to one hundred (100) watts per channel for optimum performance. For the
OS 6.3Si loudspeaker, we recommend an amplifier with a power rating of five
(5) to one hundred twenty five (125) watts per channel for optimum performance.
Ironically, most speakers 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.
8
INSTALLATION CONSIDERATIONS
Figure 2
Wiring directly from a receiver
or amplifier
Figure 3
Incorporating a volume control
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Placing the OS Loudspeaker for the Best Sound Quality
Traditionally, when using a pair of stereo loudspeakers, the listener will be
positioned directly between the left and right loudspeakers to achieve optimum
stereo sound. However, in some applications this is not possible, especially when
a large area of coverage is required. It was for these types of applications that the
OS “Si” loudspeaker was created. With its ultra wide dispersion pattern, a single
OS “Si” loudspeaker is able to project quality stereo sound over a larger area. No
matter where you are—You are always in the sweet spot. (See Figure 4).
Make sure that 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.
9
INSTALLATION CONSIDERATIONS
10'
Figure 4
Illustration depicts the optimum placement zone for a listening
distance of ten feet.
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