Niles Audio OS6 User Manual

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I N S T A L L A T I O N & O P E R A T I O N G U I D E

M O D E L

OS6

Indoor/Outdoor Loudspeaker.

®

B L E N D I N GH I G HF I D E L I T Y

A N D A R C H I T E C T U R E®

CONGRATULATIONS

Thank you for choosing the OS6 Indoor/Outdoor Loudspeaker from Niles. With proper installation and operation, you'll enjoy years oftrouble-freeuse.

Niles manufactures the industry's most complete line of custom installation components and accessories for audio/video systems. For a free full line catalog write: Niles, Catalog Request, P.O. Box 160818, Miami, Florida 33116-0818

TABLEOFCONTENTS

INTRODUCTION

2

 

 

FEATURES & BENEFITS

3

 

 

PARTS GUIDE

6

 

 

INSTALLATION CONSIDERATIONS

7

 

 

PAINTING THE OS6

12

 

 

INSTALLATION

15

 

 

OPERATION

18

 

 

SPECIFICATIONS

19

 

 

WARRANTY REGISTRATION CARD

21

 

 

LIMITED WARRANTY

22

 

 

 

 

INTRODUCTION

The OS6 marries unparalleled listening satisfaction with the freedom to listen to music anywhere! You can use them indoors and outdoors (even on a boat). The extraordinary sonic performance of theOS6 was achieved by harmonizing unique and proprietary technology with the most advanced manufacturing methods and materials available.

The OS6 is atwo-wayspeaker in an acoustic suspension enclosure. The cabinet is shaped to fit neatly into corners or eaves. It is supplied with a swiveling mounting bracket for easy installation anywhere. In addition, our engineers constructed theOS6's to withstand the stresses and strains of the world outside! For the first time, serious listeners can enjoy a concert on the green in their own back yard.

INTRODUCTION

2

BENEFITS & FEATURES

FEATURES&BENEFITS

LONG THROW POLYPROPYLENE WOOFER

The unusually stiff and light polypropylene cone, the butyl rubber surround, the substantial magnet, and the rigid steel basket are all optimized for large excursions of the woofer. In this way, the five inch cone can create the same deep bass output of a much larger speaker moving small distances in and out. The end result is rich satisfying bass from a compact, weather resistant loudspeaker.

ELASTODYNAMICHYBRID DOME TWEETER

In the past, every weather resistant speaker has disappointed listeners with a fatiguing and harsh treble sound caused by tweeter ringing. In the course of developing our weather resistant tweeter, we determined that tweeter ringing can be damped out by a microscopically thin elastomeric coating on a natural fiber dome substrate. The result is a transparently clear, sweet, natural sounding tweeter which still maintains extended frequency response.

TAPERING SHAPE

The cabinet of the OS6 is shaped so that the speaker will tuck discretely away into corners or under eaves.

RIGID, ACOUSTICALLY INERT ENCLOSURE

The cabinet of the OS6 is composed of mineral filled polypropylene. This material is extremelynon-resonant.All you hear is the music.

LOW DIFFRACTION GRILLE AND FRONT BAFFLE

The grille of the OS6 has hundreds of precisely sized perforations, resulting in acoustical transparency. The front baffle is gently curved in a radius optimized for the best sound. Sound waves emanating from the woofer and the tweeter are not reflected by the surrounding parts of the speaker.

3

PRECISION CROSSOVER

An electronic dividing network inside the cabinet precisely distributes the music to the woofer and the tweeter. The two-waydesign of theOS6’s crossover provides excellent stereo imaging and low distortion.

SWIVELING BRACKET

The U-shapedbracket and bracket knobs allow theOS6 to be pointed at the optimum listening position and locked into place quickly and easily.

EASY THREE-WAYMOUNTING SYSTEM

1.The OS6 can be hung from a nail using the nail hole on the bracket.

2.The bracket can be screwed into the mounting surface using your hardware.

3.The OS6 is equipped with1/4-20threaded inserts for OmniMount® (53RST-UMK)or custom brackets.

STABLE SHELF PLACEMENT

The bracket knobs serve as one of the speaker's feet when the OS6 is placed directly on a shelf or desktop without the bracket. In addition, two feet are molded into the base of the cabinet to give added stability.

PREMIUM GOLD-PLATEDFIVE-WAYBINDING POSTS

Gold plating gives you a corrosion-freehigh quality speaker wire connection. The connectors'five-waydesign allows you to use any of the most popular wire terminating methods.

EASY FINGER-SIZEDACCESS

The binding posts are mounted upside down in a molded recess on the back of the OS6 to prevent moisture from pooling at the connection. The recess is large enough for your fingers— you can easily loosen or tighten the speakerconnections.

WEATHER RESISTANT CONSTRUCTION

The hardware is made of stainless steel or brass, and the binding posts are plated with gold. The bracket and grille are made of aluminum for the ultimate rust-proofconstruction.

BENEFITS & FEATURES

4

BENEFITS & FEATURES

The enclosure itself is shatterproof. The OS6’s components are weather resistant,UV-resistant,saltwatercorrosion-resistant,and immune to damage from temperature extremes(-50to over 200 degrees Fahrenheit).

5

PARTSGUIDE

a

e

b

d

d

f

g

 

 

 

 

e

i

 

 

 

 

 

Figure 1 OS6 Parts Guide

 

j

 

 

 

Grille

 

 

 

Cabinet

 

 

 

 

 

c.

Wire Hole

h.

Baffle

 

d.

Screw Hole

i.

Binding Posts

 

e.

Bracket Knob

j.

Threaded Inserts

 

GUIDE PARTS

6

CONSIDERATIONS INSTALLATION

INSTALLATIONCONSIDERATIONS

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 OS6 connects to your receiver or amplifier using2-conductorspeaker 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 of theOS6 will accommodate up to 12 gauge wire directly. Larger sizes can be accommodated using spade, banana, or pin connectors.

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.

When you run wire inside walls, outdoors or in marine installations, special jacketing or conduit is required for a trouble-freeinstallation 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.

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CONSIDERATIONS INSTALLATION

Figure 2

Figure 3

Wiring directly from a receiver or

Incorporating a volume control

amplifier

 

INCORPORATING A VOLUME CONTROL

It’s possible to control the volume of the sound at the speaker location. Plan to wire the system so that each pair of speakers has its 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 speaker (See Figure 3).

RECOMMENDED AMPLIFIER POWER

We recommend an amplifier with a power rating of five to seventy-fivewatts per channel for optimum performance (Niles makes a line ofhigh-performanceamplifiers. See your local Niles dealer for more information). 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.

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CONSIDERATIONS INSTALLATION

PLACING THE OS6 FOR THE BEST SOUND QUALITY

The OS6’s dispersion pattern is very broad. The speaker is very sensitive and will handle a lot of amplifier power. 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 speakers. The best way to avoid hot spots for a large space is to use several pairs. A good rule of thumb is a pair of speakers for every 200 to 400 square feet of listening area. Your local Niles dealer is a good source for advice on speaker placement for your particular installation.

When using more than one pair, it is usually best to alternate a left channel and then a right channel, so that you never have a "left next to a left".

The position of the speakers and the surroundings around them play a very important role in how a stereo image is created. You should experiment to find the very best position for your speakers. Here are some guidelines to make the process quick and easy.

Figure 4

Illustration depicts the optimum placement zone for a listening distance of ten feet.

Speaker

Placement

Zone

10'

5' 10'

Speaker

Placement

Zone

9

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 speaker. To determine the best position, measure the distance between the ideal listening position and the wall you plan to mount the speakers on. Try to place the speakers so that they are at least one-halfthe 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 speakers should be between five and ten feet apart(See Figure 4).

You can control the speakers bass output by placement. This is called the boundary effect. You will get more bass response by mounting the OS6 directly to a wall or other flat surface (any boundary close to the speaker will reinforce the bass frequencies). You can increase the bass output even more by mounting theOS6 in a corner or under an eave(See Figure 5) This type of placement gives the speaker two boundaries, both reinforcing the bass sounds. Of course, if you wish to hear less bass, try moving the speaker away from the boundary

(See Figure 6).

CONSIDERATIONS INSTALLATION

Figure 5

Figure 6

Placement for more bass output

Placement for

 

less bass output

MOUNTING METHODS

The OS6 can be mounted either horizontally or vertically. The bracket knobs will keep the speaker angled correctly in any position once they are tightened. You can choose from three mounting methods to attach theOS6 to the wall, ceiling, or other mounting surface.

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CONSIDERATIONS INSTALLATION

1. If the speaker is never going to be exposed to sudden accidental impacts, wind, waves or earthquakes you can simply hang it on a nail using the nail hole(s) of the bracket (See Figure 7).

Nail Mounting

Screw Mounting

OmniMount or Custom Bracket Mounting

Figure 7 TheOS6 can be mounted three ways.

2.The safest and most secure way to mount the speaker is by screwing it to the mounting surface using your own hardware (suitable for the surface you are mounting to) and the bracket supplied with the speaker (See Figure 7).

3.There are threaded brass inserts on the back of the OS6 for attaching an OmniMount (53RST-UMKSeries) or a custom bracket(See Figure 7). This allows you to position the speaker at unusual angles or distances from the mounting surface.

SAFETY FIRST!

Be careful to use hardware that is designed for the surface you are mounting to. The OS6 with the bracket weighs 4 lbs. 12 oz. If you are not sure of a safe way to mount the speakers, consult a professional installer or a building contractor.

You will maximize the useful life of the speaker, by placing the speaker so that it receives less exposure to the elements. Look for the best overall compromise between sound quality, convenience, and exposure. Do not compromise safety.

11

PAINTINGTHEOS6

The enclosure, the brackets, and the grilles of the OS6 can all be painted to match the surroundings. Because we want you to preserve the acoustic qualities of the grille, please paint the grille according to the grille painting instructions. Make sure you pick a paint that is appropriate for the mounting location. There are interior and exterior varieties, and even paint for marine uses. If you are not sure what paint to use, consult a paint store professional or a painter.

TOOLS REQUIRED

A spray can of primer paint (Krylon Sandable Spray Primer #1318)

The correct paint for the surroundings (oil or water based paint for example)

A paint brush or applicator if the paint is not in a spray can.

A paper clip or a corkscrew (for removing the grille)

Masking tape

2 paint masks (supplied)

A damp cloth and a dry cloth

PREPARING TO PAINT

1. Separate the parts of the speaker. You should remove the brackets and the bracket knobs. Remove the grille by hooking it with a bent paper clip or the tip of a corkscrew and pulling it away from the cabinet(See Figure 8).

Figure 8

Removing the grille using a paper clip

OS6 THE PAINTING

12

PAINTING

2.

Wipe off the other sides of the cabinet, the bracket, bracket knobs, and grille

with a damp cloth. Do not touch or rub the speakers on the front baffle. Make

 

 

sure everything is dry before masking.

THE

3.

Mask off the binding posts and the brass threaded inserts on the back panel

with masking tape.

OS6

4.

Mask off the threaded inserts on the top and bottom with masking tape.

 

 

5.

Protect the front of the speakers by inserting the supplied paint masks in

 

place of the grilles.

PAINTING THE CABINET, BRACKET KNOBS AND BRACKET

1.Apply two thin coats of a primer to the cabinet and knobs. We recommend Krylon Sandable Spray Primer #1318. The bracket doesn't require a coat of primer.

2.Allow the primer to completely dry.

3.Apply the finish color.

4.Allow the paint to completely dry.

5.Carefully remove the masking material.

6.Do not reattach the speaker to the bracket until the bracket is mounted. Try to keep all handling of the freshly painted parts to a minimum.

PAINTING THE GRILLE

The grille is important to the sound of the OS6. Do not fill the holes of the grille with paint. The grille is constructed of aluminum with a perfectly even powder coat overall. This powder coat is an ideal primer.

If you are using a spray paint, use two thin coats without any primer. If you are using a compressor and a spray gun, use the finest, most diffuse setting. Practice on paper if you are not experienced in painting with spray paint.

13

If you are using an applicator or brush and a can of paint, thin the paint first. Thick paint will tend to clog the grille holes.

REPLACING THE GRILLE

Carefully fit the grille into its recess so that it is barely in place. Starting with one corner, go around the speaker, pushing the grille in a little bit each time. You should be gentle, the aluminum grille can be easily bent out of shape. You will feel a positive “snap” when it is fully in place.

OS6 THE PAINTING

14

INSTALLATION

INSTALLATION

MOUNTING THE BRACKET

1.Remove the bracket knobs and the bracket from the speaker.

2.Hold the bracket up to the mounting surface. The speaker can be mounted either horizontally or vertically. Hold the bracket so that the speaker wire fits through the large, circular wire hole in the bracket. Align the bracket to be square with the surroundings (use a level for accuracy).

3.Mark the locations of the three oval-shapedscrew holes(See Figure 9). Be sure to use all of the holes.

4.Drill pilot holes into the mounting surface.

Figure 9

Mounting the

OS6

5.Pull the speaker wire through the wire hole in the center of the mounting bracket. Align the bracket so that the holes all line up.

6.Use your hardware to attach the bracket to the mounting surface.

15

CONNECTING THE SPEAKER

1.Separate the two conductors of the speaker wire so that at least two inches of each conductor are free.

2.Strip one half inch of insulation from the end of each conductor of the speaker wire.

3.If you have any connectors (gold pins or bananas) which you prefer to use, affix them to the stripped wire ends now. Only gold plated connectors should be used outside as they will not tarnish or corrode.

4.Use the bracket knobs to attach the speaker to the bracket. Do not tighten the knobs completely. Angle the speaker so that the rear terminals are accessible.

5.Connect one stripped wire end (or connector) to the black and one to the red terminal. Pay attention to the markings on the wire. Each speaker must be connected to the amplifier in the same way.

SPEAKER PHASE

Speaker wire has two conductors. One conductor is attached to the negative (-)terminals and one conductor is attached to the positive (+) terminals of both your speaker and your amplifier. Usually, the wire is marked for your convenience. There are different ways to mark the wire; a stripe on one wire, a ribbed area of one conductor you can only feel, different colors of metal wire on each conductor, or there might be a fabric strand or string wound into one of the conductors. Of course, there are some wires which appear completely identical. Be careful to avoid mistakes. If you do, one speaker will be playing out of “phase” with the other speaker. Anout-of-phasepair of speakers work against each other and the sound of the two speakers playing together will be lacking in bass and “phasey” sounding. If you suspect the sound is not right and you cannot see any markings on the wire, try this simple test:

1.Point the speakers at each other, rather than at you.

2.Play some music with the amplifier or radio set to Mono.

INSTALLATION

16

INSTALLATION

3.

Stand so you are the same distance from each speaker and listen to the rich-

ness of the bass and the loudness of the sound.

 

 

4.

Turn off the amplifier and reverse the connections on one speaker only.

 

5.

Repeat the listening test with the same setting of the volume control. When

the sound has a richer bass and is slightly louder the speakers are working together or “in-phase”.

FINAL ADJUSTMENTS

1.After checking that the speaker is in phase and works correctly, angle the speaker for the best sound.

2.Tighten the bracket knobs using only your hands. Use of any power tools may over-tightenthe knob, and strip the threads of the insert.

3.Check that the entire installation is safe and secure.

17

OPERATION

LISTENING AT HIGHER VOLUMES

Outdoors there are no walls to reflect and contain the sound. It requires more power to achieve a reasonable volume of sound outside than it does when you are indoors. You also frequently find yourself very far from the speaker. It is possible to turn the volume so high that the amplifier runs out of power. This creates “clipping” distortion.

Clipping distortion makes treble sound very harsh and unmusical. When you hear harsh sounding treble from any good speaker indoors or outdoors, turn the volume down immediately! Those harsh sounds are masking some much more powerful ultra-high-frequencysound spikes which will quickly damage any fine loudspeaker.

CLEANING

You can clean the OS6's with a dampened soft cloth or paper towel. If the speaker is mounted high up on a wall or ceiling, use a broom to gently brush it off. Hosing off the speaker is not recommended, as the tweeter is a precise mechanism which might be damaged by a high pressure stream of water.

OPERATION

18

SPECIFICATIONS

SPECIFICATIONS

RECOMMENDED AMPLIFIER POWER

Five to 100 watts per channel

NOMINAL IMPEDANCE

8 Ohms

FREQUENCY RESPONSE

110Hz to 21kHz, plus or minus 3 dB (on axis)

SENSITIVITY

89 decibels for 2.83 volts of Pink Noise, measured at 1 meter on axis

WIRING REQUIREMENTS

Sixteen to 18 gauge 2-conductor(unshielded or shielded) wire for runs up to 80 feet. Fourteen gauge2-conductor(unshielded or shielded) wire for runs up to 200 feet.

TEMPERATURE EXTREMES

-50°to 200° Fahrenheit

DIMENSIONS (Speaker without bracket)

7" Wide x 9-1/4"High x5-11/16"Deep

DIMENSIONS (Speaker with bracket)

7" Wide x 9-1/4"High x6-5/8"Deep

WEIGHT (Speaker and bracket)

4 lbs. 12 oz. each

19