Niles Audio BG525 Speaker User Manual
Contents
1. Ey a Zc a D a a D ae i D a2 i Ey ie Try to line the holes up perfectly because it makes pulling the wire much easier A good technique is to snap a chalk line across the face of the studs or against the bottom of the ceiling joists Then work backward so that you can always see the holes you have already drilled Paying careful attention to this will save you a lot of time later on Pulling the Cable Pull the cable in sections from the stereo to the volume control from the volume control to the speaker Start with the longest sections and use left over wire to complete the short sections If you plan to pull many rooms at the same time through a central route walk off the dis tance to each destination add a generous fudge factor for turns and other obstacles then cut off each section so that you have a bundle of wires you can pull at once Whenever you run the wire further than four and one half feet from a hole in a stud or joist open attic space going up walls etc fasten the wire to the joists or studs using cable clamps or appropriately sized wire staples The wire should not have large sags in it nor should it be too tight Try to protect the wire from being stepped on in attics or other unfinished crawl spaces There are guard strips race ways and conduits which can be used to protect the cable Consult the local build ing code2. mm Le Figure 10 UMMM GU UOU UUU O U O O SE LMM MMM MEE LEMME LEE YE EEE LLL yyy YOY j Yj MEL LL MMMM ASA IR AAR a ca pma 3 m3 Pmj Se 5 m3 co zm cD pma Ea lt s m3 cD ca m3 CD s cD ca mr aac ca __ m3 ca Installation of Brackets Frames and Grilles in Existing Walls IMPORTANT Before you cut into any wall review the sections on running wire and speaker placement 1 Drill a 1 8 pilot hole just barely through the wallboard or drywall 1 2 to 5 8 deep in most homes about an inch below the center of your proposed speak er location an inch to the side if you are mounting the speaker horizontally BE VERY CAREFUL NOT TO DRILL THROUGH EXISTING WIRES PIPES OR STRUCTURE IF YOU FEEL ANY EXTRA RESISTANCE AS YOU ARE DRILLING STOP Cut a piece of coat hanger equal to the width of the bracket Bend the wire in half creating a right angle Poke the L shaped wire into the pilot hole and turn it Figure 12 SSPE SET ET if Figure 11 en T 5 1 Vo i ij A D l s OS i th i H 5 Yi ry A rt gt a Se if mk i FAN SSN ti Li li Ay ry li My ry Li i in a complete circle If it turns freely repeat the procedure from a hole about an inch above the center of your proposed
3. Age Musical tastes Under 25 Please check all that 125 34 apply k 35 44 L Alternative 45 54 Classical L155 amp over 3 Country LI azz Income New Age Under 24 999 Popular 1 25 000 34 999 L R amp B _ 35 000 44 999 L Rock 1 45 000 59 999 L Other 1 60 000 74 999 _I 75 000 99 999 How did you hear _I Over 99 999 about Niles _I Architect Developer Occupation J Custom Installer d Arts Entertainment d Direct Mail L Business Owner d Friend Family L Engineer _I In Store Display d Finance Accounting _I General Office Management _I Professional Sales Marketing Student Tradesperson _J Interior Designer Magazine Ad _I Mail Order Catalog Newspaper Ad _J Product Brochure L Product Review d Retail Salesperson What magazines do you read 1 2 3 Who will install the product _I Custom Installer L Electrician I Friend Myself Which factor s influ enced the purchase of your Niles product Please check all that apply Ease of Use _I Price Value L Product Features _I Quality Durability L Reputation _I Style Appearance Warranty Do you L Own a House If yes how many square feet L1 Own a Town House Condominium Co op L Rent an Apartment Renta House Are you interested in receiving literature on other Niles products Yes LI No Are there products capabilities that you would like to see introduced 8ST80 9TLEE EPUO 4 UEIN S
4. Warranty Niles Audio Corporation NILES warrants its loudspeaker products to the original purchaser to be free of manufacturing defects in material and workmanship for a period of five years from date of purchase This Warranty is subject to the following additional conditions and limitations The W arranty is void and inapplicable if NILES deems that the product has been used or handled other than in accordance with the instructions provided by the manufacturer including but not limited to damage caused by accident mishandling improper installation abuse negligence or normal wear and tear or any defect caused by repair to the product by anyone other than NILES or an authorized NILES dealer To obtain warranty service take the unit to the nearest authorized NILES dealer who will test the product and if necessary forward it to NILES for service If there are no authorized NILES dealers in your area you must write to NILES and include your name address model and serial number of your unit along with a brief description of the problem A factory Return Authorization Number will be sent to you DO NOT RETURN ANY UNIT WITHOUT FIRST RECEIVING WRITTEN AUTHORIZATION AND SHIPPING INSTRUCTIONS FROM NILES If the above conditions are met the purchaser s sole remedy shall be to return the product to NILES in which case NILES will repair or replace at its sole option the defective product without charge for parts or labor NILES will return
5. a hard reflecting surface you can make one pair of speakers sound like several Create as many reflections as possible by mounting the speaker up high in the wall so that the ceiling will act as a powerful reflector If you place the speak ers near a corner wash the sound down a wall from a ceiling location or mount the speakers as far away as you can from the listening area more reflections will occur However all of these placement tech niques require that you work your sur round sound amplifier channels harder If the surround sound system you are using has a small five or ten watt amplifier for the rear speakers stay within five to eight feet of the listening location If you are using a 25 to 50 watt amplifier you can mount the speakers 10 to 15 feet away from the listening location and still achieve reasonably high volume levels Of course the best way to emulate the sound of multiple speakers is to use multi ple speakers In large or unusually shaped rooms this might be the only way to achieve a good effect If you like to listen to music surround modes which emulate concert hall acoustics more than two sur round speakers will prove extraordinarily effective With Niles BG loudspeakers it is easy to add another pair without affecting the decor of the room However you will need to use a much more powerful ampli fier than that which is built into a typical surround sound receiver or amplifier Niles makes a number of S
6. grilles The painted aluminum grille has hundreds of precisely sized perforations creating an acoustically transparent grille Infrared Sensor Mount The speaker baffle has a locator designed for the Niles MS 1 MicroSensor a miniature infrared sensor The MS 1 installs discreetly behind the aluminum grille and therefore minimizes wall clut ter in your home When you want to control your equipment you simply point your remote control at the speaker from up to 15 feet away Figure 1 New Construction Wings Bracket Speaker Baffle IR Knockout Installation Considerations Recommended Amplifier Power For satisfactory performance we recom mend an amplifier with a power rating of five to fifty watts for the BG 525 Curiously most speakers are not damaged by large amplifiers but by small amplifiers If your system is playing loudly a small amplifier will run out of power very quick ly When an amplifier runs out of power it creates damaging clipping distortion A large amplifier will play at the same vol ume without distorting See the section on operating the speakers for more informa tion about clipping distortion Incorporating a Local Volume Control In a multi room system there is one indis pensible control for true convenience a local volume control It allows you to adjust the volume of the speakers without leaving the room Plan to wire the system so that each pair of speakers has its own
7. interference or hum on your speaker wires so you can safely run all of them at the same time through the same holes side by side Before you drill any holes mount the speaker brackets in the desired speaker locations and mount P rings or open backed J boxes where the in wall volume controls and stereo equipment will be Safety First Wear gloves safety goggles and head protection when drilling Avoid nails they ruin bits and they can create injury Pay particular care when using hole hogs and other powerful electric drills the torque of the drill when suddenly stopped by a nail can break the wrist of a strong man Drilling Use a bit that is large enough for the wires you plan to run An auger bit is the pre ferred bit for rough in wiring It will actu ally pull itself through the wood so that the drill motor not you does most of the work You will be drilling a lot of holes so this is important Always drill the holes in the center of the stud If you have to notch the stud or drill the hole closer than one inch from the edge of the stud protect the wire with a nail plate See Figure 2 When drilling holes in ceiling joists drill in the center of the joists and try to locate the hole near the end of the joist DO NOT drill through a gluelam or any load bearing beam without the direction of your contractor aaa Gf j D a a D ents e i D a2 i mim 7
8. you hear harsh sounding treble from any good speaker turn the volume down immedi ately Those harsh sounds are masking some much more powerful ultra high fre quency sound spikes which will quickly damage any fine loudspeaker You are much less likely to damage a speaker with a large amplifier because it will be very loud indeed before it produces any clip ping distortion Cleaning You can clean the speaker with a damp ened 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 Specifications Model BG 525 Driver Complement 5 1 4 woven fiber full range PointSource driver ers g cD i n a n i f n i i Design Principle Infinite baffle for large and varying air volumes Recommended Amplifier Power Five to Fifty watts per channel Nominal Impedance 8 Ohms Frequency Response 100 Hz to 12 000 Hz plus or minus 5 dB on axis Sensitivity 89 decibels for 2 83 volts of Pink Noise measured at 1 meter on axis O verall Exterior Frame Dimensions 7 1 8 x 9 7 8 Depth Behind Wall 1 7 8 Assumes 1 2 drywall Wall Cut Out Dimensions 6 1 4 x 9 W iring Requirements We recommend 16 to 18 gauge for up to 80 feet 14 gauge for up to two hundred feet Connectors accommodate 14 to 22 gauge wire m cD n3 5 5 m3 rmja bs Limited
9. INSTALLATION amp OPERATION GUIDE an im SS blueprint series Mf NILES BLENDING HIGH FIDELITY AND ARCHITECTURE Congratulations Thank you for choosing a Blueprint Series In Wall Loudspeaker from Niles W ith 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 For a free full line catalog write Niles Catalog Request P O Box 160818 Miami Florida 33116 0818 TABLE OF CONTENTS INTRODUCTION 2 FEATURES AND BENEFITS 2 INSTALLATION CONSIDERATIONS 4 SPEAKER PLACEM ENT 6 INSTALLATION FUNDAMENTALS 8 INSTALLATION OF BRACKETS FRAMES AND GRILLES IN NEW CONSTRUCTION B INSTALLATION OF BRACKETS FRAMES AND GRILLES IN EXISTING WALLS 15 INSTALLATION OF THE SPEAKER AND GRILLE IN NEW OR EXISTING CONSTRUCTION 16 O PERATIO N 18 SPECIFICATIONS 18 LIMITED WARRANTY 19 WARRANTY REGISTRATION CARD 20 Introduction The BG Background group of Blueprint Series Loudspeakers offers a product expressly designed for quality back ground music reproduction This speaker is perfect for hallways laundry rooms entryways or other areas where critical listening is unlikely and cost is a major influence in the purchase decision A complete installed pair of BG 525 In Wall Loudspeakers consists of three components 1 BG 525 Speaker 2 525 Bracket Kit 3 525 Fr
10. TSOST XOg O d 3doq uoReNsiboy Queue uopeiodiop olpny S N OLNYNLIY ANY INN GSLLOd SNOW LND CARD ON THE REVERSE SIDE DETACH AND MAILTO Warranty Registration D ept Miami Florida 33116 0818 WARRANTY REGISTRATION P O Box 160818 PLEASE FILL OUT THE Niles Audio Corporation NILES www nilesaudio com Niles Audio Corporation 12331 S W 130 Street Miami Florida 33186 Tel 305 238 4373 Fax 305 238 0185 Printed in Taiwan 1999 Niles Audio Corporation Because Niles strives to continuously improve its products Niles reserves the right to change product specifications without notice Niles the Niles logo Blending High Fidelity and Architecture and Blueprint Series In Wall Loudspeakers are registered trademarks of Niles Audio Corporation Decora is a registered trademark of Leviton Manufacturing Co Inc Printed in USA DS00136A
11. a chisel to remove all of the plaster within the taped outline Finally insert a metal cutting blade into a sabre saw and very slowly and carefully saw the lath Sawing the lath can easily vibrate plaster off the wall If you have the patience use a pair of tin snips to slowly nip away at the lath instead There is no risk with this method itis just time consuming 5 Fill the wall cavity with insulation at this point Remember to use equal amounts of insulation for each speaker 6 Slip the mounting bracket through the hole and pull it toward you so that its front edge slides into the hole and stops in place 7 Attach the frame to the bracket by screwing the frame to the bracket using the supplied screws Do not overtighten the screws this will distort the frame and the grilles will not fit this is not perma nent just loosen the screws and the grille will pop in The screws should pull the frame and bracket together sandwiching the drywall so that the frame is absolutely flush with the wall surface There should be no gaps between the wall and the frame See Figure 12 Installation of the speaker and Grille in New or Existing Construction Setting the Acoustic Fine Tuning Setting the switch located on the rear of the loudspeaker to the NORMAL or PRESENCE position changes the overall tonal character of the sound The speaker is shipped in the NORMAL position This is most appropriate for rooms w
12. a unit repaired or replaced under warranty by shipping same by its usual shipping method from the factory only at its expense within the United States of America THERE ARE NO OTHER WARRANTIES INCLUDING WITHOUT LIMITATION EITHER EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FIT NESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCT REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE CONSUMER PURCHASER NILES SHALL NOT BE RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EXCEPT TO THE EXTENT PROVIDED OR PROHIBITED BY APPLICABLE LAW Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state For the name of your nearest authorized NILES dealer contact NILES AUDIO CORPORATION P O BOX 160818 Miami Florida 33116 0818 Please fill in your product information and retain for your records Model Serial No Purchase D ate ED LINE WARRANTY REGISTRATION CARD Model Purchased Serial Number Date Purchased month day year Dealer Name and Location Dr a Miss Q Mr Mrs Name Address City Telephone Ms State Zip Please take a moment to fill out our warranty registration card The information helps us to get to know you better and develop the products you want
13. ame Grille Kit Features and Benefits PointSource Full Range Driver The PointSource driver of the BG 525 is constructed with a woven fiber cone sup ported by a treated foam surround This gives the driver rigidity for fast transients The frequency response curve of the PointSource driver has been carefully shaped for Background Music reproduc tion It has a rich sound much more suit able for low volume listening than tradi tional speakers The single driver configu ration gives effective coverage over a wide area allowing great latitude in terms of speaker placement X Matrix Reinforced Baffle The X Matrix baffle design uses specially molded ribs to add rigidity to the baffle assembly The end result is better bass and improved midrange detail Absolutely Flush to the Wall Appearance The unique mounting system of the BG loudspeakers powerfully clamps the frame to the bracket sandwiching the wall mate rial between them Because the clamping action is totally uniform around the frame there are no shadows or gaps between the wall and the frame Additionally the Niles mounting system is carefully optimized to stiffen the surrounding drywall and pre vent it from resonating You hear only the music not the drywall Easy Retrofit Installation in your Existing Home Designed for ease of installation the Niles mounting system makes retrofit installa tions simple and fast A supplied template assures fast and accur
14. ate hole cutting The bracket slips behind the drywall and the screws secure the frame to the bracket 1 at z gt c a o cD a a i n s oo pge m z i s cB z aai n ama c a sandwiching the drywall between them The speaker baffle attaches to the frame and the grille mounts over the speaker Three Stage Installation System for Remodels or New Construction You install only the parts you need for a particular stage of construction When the framing and wiring are finished you install the bracket After the drywall is up but before the painter begins to paint you install the frame and provide the rustproof aluminum grilles to the painter so that they can be painted to match the sur roundings Only when construction is completely finished do you put the valu able speaker in the wall You don t have to mask or prep the speaker for painting and worries about theft during the final phases of construction are never an issue Eight Ohm Impedance The speakers are designed to be placed in multi room systems with many pairs of speakers The eight ohm impedance Is a very easy electrical load for most ampli fiers This allows many pairs of BG speak ers to be wired to a single amplifier using a Niles speaker selection system Low Diffraction Paintable Aluminum Grilles BG speakers are available with aluminum
15. equipment location This wire is normally run beside the speaker wire at the same time Typically the sensor is placed in a location that faces your listening position Most remote controls will have an effective line of sight range of 18 to 30 feet with any Niles sen 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 special jacketing CL 2 or CL 3 is required to both protect the wire and for fire preven tion In some areas conduit is required For a trouble free installation low voltage wire such as speaker wire must be run in accordance with the National Electrical Code and any applicable provisions of the local building code If you are unsure of the correct installation techniques wire jacket or type of conduit to use consult a professional audio video installer your building contractor or the local building and inspection department Incorporating a Remote Control If you are planning to use a stereo system with a hand held IR remote control con sider the advantages of installing a Niles IR Repeater system You are able to con sor placed in a wall ceiling on a cabinet or tabletop However when you place a Niles MS 1 MicroSensor behind the perfo rated aluminum grille of a speaker the effective range is reduced to 9 to 15 feet Insulating the Wall Cavi
16. for special requirements in your area Concealing Speaker Wire in Existing Walls This is actually a fairly simple task if you restrict your choice of speaker locations and wire routes to the interior walls or ceilings of your home Interior walls in almost all North American residences are hollow so that it is easy to flush mount speakers into them and route new speaker cable around the house What you see when you look at the painted wall board plaster or paneling is only the skin of the wall Behind the skin is the skeleton two by four wood or metal studs running vertically from the floor to the ceiling in walls and two by six or larger joists running horizontally in the ceilings and floors In between the studs and the joists is the space for the wiring and plumbing of your home Exterior walls are different They must insulate the house from the heat and cold outside so they are stuffed with insulation The national building code requires that the hollow wall space in exterior walls be broken by a horizontal stud placed between the vertical studs This fire blocking makes it very diffi cult to retrofit long lengths of wire In some areas of the country the exterior walls are constructed of solid masonry and have no hollow space for speakers or wires Start by examining all the possible routes you might take to run the speaker wire from the speaker to the volume control and back to the stereo Use a st
17. gure 13 1 Separate 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 gold pin con 4zoaocagcosaoa nectors which you wish to use affix them to the w stripped wire ends now 4 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 5 Place the speaker baffle in the frame and secure it with the supplied 8 x 3 4 screws If you find that the baffle does not smoothly fit the frame slightly loosen the mounting screws that hold the frame to the bracket 6 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 easi ly bent out of shape The speaker will have an absolutely flush appearance when it is fully in place 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 wires are marked a a stripe on one wire a ribbed area of one conductor you can only feel differe
18. he large hole to auger holes across up or down the wall for as far as your drill bit will take you If you have matching paint and take reasonable care in patching you can cut a hatch in the dry wall at each stud run your wire and patch and touch up the wall See Figure 6 When you are dealing with the unknown because of the structure of your home or with difficult to patch wall materials like plaster lath and plaster faux finishes wallpaper etc be patient A careful study of the potential problems before you start the job will pay off ero a D a a a a A A D i j a er a i i pga 5 f mje i es C 5 i i r i I C x cD i 5 i 5 s i i i Z a i i i 3 i s Installation of Brackets Frames and Grilles in New Construction Stage One Before Drywall is Hung Insulating the Wall Cavity If feasible fill the wall cavity with insula tion at this point Attach the wings to the bracket by snap ping them into the sides of the bracket The wings can be shortened by breaking them along the scored lines if their length will interfere with a corner or eaves You can mount the bracket horizontally or ver tically See Figure 8 Figure 8 Screw one side of the assembled bracket with wings to the s
19. high in the wall or even down low at power outlet height in the ceiling near corners or directed at reflective objects and walls The more reflected sound there is in the room the stronger the ambient effect at low vol umes You should use moderation how ever otherwise the compromise becomes too one sided and at high volumes the sound will be blurred and less distinct Placement for Rear Home Theater Applications In a home theater the goal is to repro duce the experience of a great movie the ater in our homes The biggest difference between the two is the rear or surround speaker array in a commercial theater Here it is not uncommon to see twenty or thirty speakers around the audience cD m3 m cD 5 E ca cD cD rmja C A cD m3 cD 5 E co cD co rmja This huge array of speakers assures that you will feel completely surrounded by the ambient soundtrack of the movie Film makers try to use the surround soundtrack to envelope you in the envi ronment on screen They will place back ground music rain sounds traffic noise etc on the surround soundtrack In a home with a single pair of speakers it is easy for the jungle sounds to sound like they are in the middle of your head just like headphones A single pair of BG Loudspeakers proper ly placed can create a very convincing simulation of an array of speakers If you place them near
20. ith typical reflective painted or wallpapered walls and ceilings and nor mal amounts of furniture and drapes You might prefer the PRESENCE position if you are placing the speaker in a very large or very absorbent room lots of drapes and upholstered furniture or textured fabric wallpaper Installing a Niles MS 1 MicroSensor There is a 1 2 round molded IR Sensor Knockout on the face of the speaker baf fle To prevent damage to the crossover network you must remove the knockout from the rear of the speaker Do not attempt to remove the knockout with the speaker face up Lay the speaker face down on a clean carpet or rug Put the tip of a screwdriver into the center of the round knockout and sharply tap the screwdriver handle as necessary Install the MS 1 using its mounting hex nut so that it is tightly secured to the speaker Connect all wires and continue your installation a ca pma m3 m3 pma any __ e a cD n3 cD 5 m3 Ca E cD a 5 mr mae cn pma C Z cn pja 5 co pma a ca pma m3 pja hy pma cD E 5 cD n3 co 5 m3 Ca E cD 5 mr a T pma c ca pma 5 co pja Installing the Speaker If the grille is already installed remove it by using a bent paper clip or the tip of a corkscrew and pulling it away from the frame See Fi
21. nt col ors 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 or you might make a mistake If you make a mistake one speaker will be playing out of phase N with the other speaker An out of phase pair of speak ers work against each other and the sound of the two speakers playing se together will be lacking in Figure 13 Y bass and be phasey ounding If you suspect the sound is not right and you cannot see any markings on the wire try this simple test 1 Stand half way between the two speakers 2 Play some music with the amplifier or radio set to Mono 3 Listen to the richness of the bass and the loudness of the sound 4 Turn off the amplifier and reverse the connections on one amplifier channel 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 Operation Listening at Higher Volumes It requires more power to achieve a rea sonable volume of sound in a large room than it does in a small room It is possi ble even if you are not a teenager to turn the volume so high that the amplifi er runs out of power This creates clip ping distortion Clipping distortion makes treble sound very harsh and unmusical When
22. nto the wall If you have access to an attic or basement space you can quickly see which part of the wall space the wire is free of obstructions See Figure 4 When you don t have access above or below the wall try to estimate the existing wire and pipe locations from the positions of electrical outlets and plumbed fixtures on both sides of the wall Take a look at the outside of your house too sometimes aaa Gf mje D a a D a e D a2 i mim Lt a Zc a D a a D ae i D a2 i Ey ie conduit vents or drain pipe will be visible that give useful information Choose the route with the fewest potential obstacles If your house is built on a slab or you are wiring between two finished floors look for baseboards which could be removed and replaced with the wire behind them Doorjambs can be removed and often have enough space for speaker wire all the way around the door See Figure 5 _Y Figure 5 Sometimes an under the carpet run is possible there are special flat speaker wires made for under the rug wire runs As a last resort heating and air condition ing vents can be used as wire raceways for plenum rated wire check your local building codes some municipalities require conduit igure 6 In traditional wood stud drywall construc tion you can cut the hole for the speaker and utilize t
23. ou face The rule of thumb is to add one pair of speakers for every 100 to 200 square feet of listening area Curiously this is not so that you can play the music louder but so that you can play it softer When you have only one pair of speakers in a large room you will notice that when the sound is perfect in one part of the room it is too loud near the speakers By plac ing more than one pair in the room you will avoid these hot spots of loud sound and you will create still more sonic ambiance while maintaining clarity and a rich sound everywhere You can make listener position still less critical by using mono rather than stereo This can be difficult to achieve with nor mal stereo amplifiers However Niles manufactures Systems Integration Amplifiers which enable one room to be wired in stereo while other rooms are wired in mono Consult your local Niles dealer for more information In smaller rooms or rooms that are infre quently used you typically can t justify the expense of more than two speakers Try to bracket the room with the two speakers Diagonal placement is a very effective way to stretch the coverage pat tern of two speakers You can also com promise between direct sound for detail and clarity and reflected sound the ambient or all around you effect By trying to place the speakers so that they create as much reflected sound as possi ble you emphasize the ambient effect They can be up
24. speaker location See Figure 11 If the wires movement is obstructed by a pipe or cable fill the hole s with spackle or other patching compound and try another location 2 When determining the final location of the cutout keep in mind that the frame and bracket will extend beyond the cutout Make sure that you do not place the edge of the cutout directly next to a stud Locate the studs using a stud sensor or hand knocking Once you have deter mined the correct position for the cutout hold the supplied template up to the wall surface Level the template in either the horizontal or the vertical position and mark the wall with a pencil Drill the four corners with a 1 4 drill bit Wi te f iiA A BHRT iy YY ME Uy WEYL BG Ji i iy 3 If you are cutting a painted or wall papered drywall use a sheetrock or keyhole saw Cut the hole with the saw at a 45 degree angle That way ty pies HY WY liji f i Vy Yi H Mf the drywall section can be replaced clean ly if there is an unseen obstruction behind the wall BE VERY CAREFUL NOT TO SAW THROUGH EXISTING WIRES PIPES OR STRUCTURE IF YOU FEEL ANY EXTRA RESISTANCE AS YOU ARE CUT TING STOP 4 If you are cutting into lath and plaster walls use masking tape to outline your penciled marks drill the four corners with a 1 4 bit and use a razor to score the plaster down to the lath beneath Then use
25. tud using one of the supplied screws Level the bracket Screw the other side of the bracket to the stud Two screws on each side makes for a very secure installation Attach the wire to the bracket at the indicated wire tie points See Figure 9 Stage Two Before Paint Screw the frame to the installed bracket using the supplied screws Do not over tighten the screws This will distort the frame and the grille will not fit this is not permanent just loosen the screws and the grille will pop in See Figure 10 Painting the Aluminum Grilles The grille is important to the sound of the BG loudspeakers Do not fill the holes of the grille with paint The grille is construct 9 gt o 0 j ojo o ojo o O O 9 0 0 O 0 0 O O 00 0 0 00 0 0 Installation of Brackets Frames and Grilles in New Construction ed of aluminum with a perfectly even powder coat overall This powder coat is an ideal primer Remove the grilles before painting If you are using 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 first on some paper if you have no experience painting with spray paint If you are using an applicator or brush and a can of paint thin the paint first You do not want to have to poke hundreds of holes in your beautifully painted grilles A Lit bt H tu gt tA
26. ty For best performance from your speakers fill the wall cavity behind the speaker with fiberglass insulation e g R 19 unbat ted insulation Try to keep the same amount of insulation for each speaker particularly in the same room for consis tent bass response opeaker Placement The Boundary Effect Corners can affect the bass response of the speaker powerfully This is called the boundary effect You will emphasize par ticular bass frequencies and cancel out other bass frequencies when you place speakers close to the wall ceiling bound ary or a corner wall boundary This can make the speaker sound excessively boomy and inaccurate to some listeners while to others it just seems like more bass sound A good rule of thumb is if you always listen to your current pair of speakers with the bass turned up you ll enjoy corner placement If you keep your tone controls at neutral try to keep the speakers at least one or two feet from the boundaries of the room Placement for Varying Listening Positions If you want the freedom to sit anywhere in a room facing any direction and or find that you prefer the all around you sound of some car stereos to a conven tional sound stage facing you consider the speaker placement techniques profes sional installers use in restaurants and bars They place speakers in an array around the listening area so that the music is always surrounding you regard less of the direction y
27. ud sensor or other device to locate the internal structure of the wall You want to avoid all studs or joists A typical route would be from the speaker location up the inside of the wall to a new hole drilled into the top plate horizontal two by four at the top of the inside of the wall into the attic crawl space then down to the volume control location through another top plate back up to the attic across the attic and finally down anoth er plate to the wall behind the stereo sys tem itself See Figure 3 The other very common route is through the bottom plate of the wall into an unfinished base ment or crawl space Speaker Volume Location Control Location Stereo Location Figure 3 Identify where all of your electrical phone and TV wiring is likely to be and plan to route around itall You can acci dentally induce 60 Hz hum on your speakers if you run your speaker wire right beside electrical wire for more than a few feet Try to keep speaker wire running par allel to power cables at least 3 feet away To find exactly where an electrical cable is routed try inspecting the inside of the wall by turning off the breaker for a particular power outlet or switch removing the Unobstructed space S for speaker wiring Figure 4 m ee ay ge ee Ty ee NO f a AY ry YY Mu ay M 3 n aa a cover plate and switch or receptacle and shining a penlight i
28. volume control built into the wall think of a volume con trol as a dimmer switch for sound Niles makes a wide range of high perfor mance indoor and outdoor volume con trols They are available in Standard or Decora style cover plates just like your a ca pma n3 a a pma N E c Z ca se F cD 5 m3 pja A ca a ca pma m3 a a pja N C Z ca a E I cD 5 m3 pja N ca light switches and dimmers Volume con trols are connected in line with the speak er SO you must connect the wire from the amplifier to the volume control and then from the volume control to the speaker Speaker Wire Use 2 conductor speaker wire when con necting BG speakers to your receiver or amplifier For most applications we rec ommend you use 16 or 18 gauge wire For wiring runs longer than 80 feet we recommend 14 gauge wire The spring loaded terminals of the BG speakers will accommodate up to 14 gauge wire directly Larger sizes can be accommodat ed via pin connectors trol all of the functions of your system from the room with the remote pair of speakers Niles makes a number of IR sen sors which install in the wall in the ceiling in cabinetry on tabletops or even behind the grille of your Niles BG speakers An IR sensor requires that a dedicated 2 conductor shielded wire West Penn D291 or equivalent run from each sensor location to the main
29. ystems Integration Amplifiers with proprietary fea tures that make them uniquely suited to enhance a good surround sound system Consult your Niles dealer for more infor mation Installation Fundamentals Running the Speaker Wire in New Construction If you have doubts about whether you are capable of installing a Niles Blueprint Series speaker in your walls consult a Niles dealer or professional installer They have special tools techniques and experi ence to make the impossible possible The installer can provide you with an estimate before any work is done Scheduling and Preparation Plan to schedule the speaker wiring after the electrical wiring is finished That way you can avoid wire routes which could potentially induce hum over the speaker wire The basic rules are e Never run speaker wire through the same hole as an electrical cable e Never run speaker wire into the same J box as electrical cable e Avoid running the speaker wire beside the electrical cable Keep it at least three or four feet distant from any electrical power cable Figure 2 lt Side by side wiring is unavoidable in par ticular spots in every house just move the speaker wire route away as soon as possi ble If construction forces a side by side run for more than ten feet install metal conduit or shielded speaker wire Low voltage wires such as doorbells inter coms telephone security or television cannot cause
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