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1. STAGE FRONT HOME THEATER s OLUTION Sm INSTALLATION GUIDE Prol77OLCR E Pro2770LCR Pro1870LCR Pro2870LCR PROFESSIONAL QUALITY COMPACT LEFT CENTER RIGHT CHANNEL LOUDSPEAKER CONGRATULATIONS Thank you for choosing a superior StageFront Home Theater Solutions Cabinet LCR loudspeaker from Niles With proper installation and operation you should 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 see the complete Niles product assortment visit us on the Internet at www nilesaudio com TABLE OF CONTENTS Introduction 1 Features and Benefits 2 Installation Considerations 3 Loudspeaker Placement 4 Finishing the Installation 1 Operation 10 Specifications 11 Limited Warranty 12 Warranty Registration Card 13 INTRODUCTION The StageFront Home Theater Solutions Loudspeakers are expressly designed for superior sonic quality in home theater applications Each model employs advanced technology components that extract the subtle nuances in recorded music or the thunderous action sound in a movie Models ending in LCR are intended primarily for front channel left center right placement or wherever a monopole design is required Models that end in FX are designed for special effect placement StageFront models are the perfect choice wherever quality of sound is the most important considerat
2. his type of configuration results in lower resistance between the amplifier and speaker than a standard connection with the same gauge cable Some listeners may prefer Bi Wiring to a standard connection with lower gauge cable Bi Amping In a Bi Amplified system the tweeter and midrange section are driven by a separate amplifier than the woofer Both amplifiers are connected to the same preamplifier output Use the same model amplifier for the tweeter and woofer inputs be sure to remove the straps linking the two sets of input terminals on the speaker Your amplifiers and your loudspeakers may be damaged if you do not remove the straps CONTINUED ON NEXT PAGE FINISHING THE INSTALLATION CONTINUED Figure 5 Bi Wire connection Straps Removed Pro2870 LCR Pro2870 LCR Surround Receiver 51275 Figure 6 Bi Amp connection 51275 Amp2 Straps Removed Pro2870 LCR Pro2870 LCR CHECKING LOUDSPEAKER PHASE Speaker wire has two conductors On both your loudspeaker and amplifier one conductor is attached to the negative terminals while the other is attached to the positive terminals Usually the wire is marked for your convenience but the marking can be done in the following different ways Stripe on one wire Ribbed area you can feel on one conductor Different colors of metal wire on each conductor Fabric strand or string wound into one
3. 3 8 D with grille Depth is 15 1 4 without grille Wiring Requirements We recommend using 16 gauge loudspeaker wire for runs up to 80 feet and 14 gauge speaker wire for runs up to 200 feet The connectors will accommodate 12 to 22 gauge wire Pro2870LCR Recommended Amplifier Power 20 200 watts per channel Nominal Impedance 6 ohm nominal 3 2 ohm minimum Frequency Response 55Hz to 20 2 dB Sensitivity 91 dB with 2 83 V pink noise input measured at 1 meter on axis Dimensions 17 1 2 W x 19 1 8 H x 15 3 8 D with grille Depth is 15 1 4 without grille Wiring Requirements We recommend using 16 gauge loudspeaker wire for runs up to 80 feet and 14 gauge speaker wire for runs up to 200 feet The connectors will accommodate 12 to 22 gauge wire 11 LIMITED WARRANTY 12 NILES AUDIO CORPORATION NILES WARRANTS ITS PASSIVE LOUDSPEAKER PRODUCTS THOSE NOT REQUIRING AC OR BATTERY POWER 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 WARRANTY 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 NE
4. listener should have a direct line of sight with the front of the loudspeaker To determine the best position measure the listening distance between the ideal listening position e g favorite chair or couch and the wall in which you plan to install the loudspeakers For stereo music applications try to place the loudspeakers so that they are equally distant from the listening spot and at least one half of the listening distance apart to maintain a large pleasant stereo image In home theater applications where there is a center channel you may choose to space the left and right main loudspeakers farther apart for a bigger than life sound with Dolby encoded movies and TV shows However for combined music and movie usage we recommend using the placement zone for stereo music Ideally if the listening position is 10 feet back from the wall place the loudspeakers between 5 and 10 feet apart as shown in Figure 1 Figure 1 Recommended loudspeaker placement for Loudspeaker front left and right channels Placement Zone O Loudspeaker Placement Zone As for placement height place front left and right loudspeakers on either side of the picture source so that their tweeters are not more than 24 inches above or below the center channel loudspeaker s tweeter see Figure 2 on page 6 NOTE DO NOT PLACE ANY STAGEFRONT LCR OR FX LOUDSPEAKER TOO CLOSE DIRECT VIEW TV MONITOR AS IT MAY CAUSE PICTUR
5. E DISCOLORATION IN GENERAL TRY TO KEEP IT AT LEAST 24 INCHES AWAY FROM THE TV WITH LARGER CRT SCREEN SIZES TEST THE PLACEMENT DISTANCE FOR PICTURE DEGRADATION BEFORE INSTALLATION THE BOUNDARY EFFECT Placing a loudspeaker in a cabinet as is likely for these models or a corner can powertully affect the way a listener perceives bass response Known as the boundary effect placing loudspeakers close to a wall ceiling boundary in a cavity in a cabinet or near a corner wall boundary will emphasize certain bass frequencies while canceling others This effect can make the loudspeaker sound excessively boomy and inaccurate to some listeners while to others it just seems like more bass sound As a good rule of thumb if you like listening to your current pair of loudspeakers with the bass turned up you ll enjoy corner placement However if you listen with the tone controls at neutral try Keeping the loudspeakers at least 2 or 3 feet from the boundaries of the room If this is not possible the Pro1870LCR and Pro2870LCR models feature a Boundary Compensation control to help correct any issues that this type of placement can cause PLACING THE STAGEFRONT LCR AS THE CENTER CHANNEL LOUDSPEAKER The center channel loudspeaker is the workhorse in a home theater system It handles all of the critical dialog and is vitally important in creating the illusion of sounds emanating directly from the picture Here are some tips for obtaining optimum cent
6. GLIGENCE 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 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 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 FITNESS 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 APPL
7. ICABLE 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 BOX 160818 MIAMI FLORIDA 33116 0818 Please fill in your product information and retain for your records Model Serial No Purchase Date NECTACLI LICDE ANIN DETIIDNI TN ALININ CNDDNDATIONI AJ ADDANITV DCRICTDATINAI ACDT DN DNV ARNQAOEO MIAMI CI ADINA 92914141C DETACH HERE AND RETURN TO NILES AUDIO CORPORATION WARRANTY REGISTRATION DEPT BOX 160818 MIAMI FLORIDA 33116 0818 Serial Number Date Purchased month day year Dealer Name and Location O Dr O Miss Name Address City Telephone O Mr O Mrs O Ns WARRANTY REGISTRATION CARD Model Purchased 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 Age O Under 25 O 25 34 O 35 44 O 45 54 O 55 amp over Income O Under 44 999 O 45 000 59 999 O 60 000 74 999 O 75 000 99 999 O 99 999 150 000 150 000 99 999 O 99 999 200 000 O Over 200 000 Occupation O Arts Entertainment O Business Owner O Engineer O Finance Accounting O General Offi
8. ce O Management O Professional O Sales Marketing O Student O Tradesperson Musical tastes Please check all that apply O Alternative O Classical O Country O Jazz O New Age O Popular O R amp B O Rock O Other How did you hear about Niles O Architect Developer O Custom Installer O Direct Mail O Friend Family O In Store Display O Interior Designer O Magazine Ad O Mail Order Catalog O Newspaper Ad O Product Brochure O Product Review O Retail Salesperson O Internets O Other What magazines do you read 1 2 3 Who will install the product O Custom Installer O Electrician O Friend O Myself Which factor s influenced the purchase of your Niles product Please check all that apply O Ease of Use O Price Value O Product Features O Quality Durability O Reputation O Style Appearance O Warranty Do you O Own a House If yes how many square feet O Own a Town House Condominium Co op O Rent an Apartment O Rent a House Are you interested in receiving literature on other Niles products O Yes O No Are there products capabilities that you would like to see introduced 13 ENGINEERED B Y Uj NILES NILES AUDIO CORPORATION 12331 SW 130 Street Miami FL 33186 1 800 BUY HIFI www nilesaudio com 2006 Niles Audio Corporation All Rights Reserved Niles and the Niles logo are registered trademarks of Niles Audio Corporation Stagefront Home Th
9. e Theater Solutions loudspeaker with a dampened soft cloth or paper towel SPECIFICATIONS Prol770OLCR Recommended Amplifier Power 20 150 watts per channel Nominal Impedance 6 ohm nominal 3 2 ohm minimum Frequency Response 70Hz to 20kHz dB Sensitivity 88 dB with 2 83 V pink noise input measured at 1 meter on axis Dimensions 8 7 8 W x 14 5 8 H x 12 5 8 D with grille Depth is 12 3 8 without grille Wiring Requirements We recommend using 16 gauge loudspeaker wire for runs up to 80 feet and 14 gauge speaker wire for runs up to 200 feet The connectors will accommodate 12 to 22 gauge wire Pro2770LCR Recommended Amplifier Power 20 150 watts per channel Nominal Impedance 6 ohm nominal 3 2 ohm minimum Frequency Response 60Hz to 20 2 dB Sensitivity 89 dB with 2 83 V pink noise input measured at 1 meter on axis Dimensions 14 5 8 W x 14 5 8 H x 12 5 8 D with grille Depth is 12 3 8 without grille Wiring Requirements We recommend using 16 gauge loudspeaker wire for runs up to 80 feet and 14 gauge speaker wire for runs up to 200 feet The connectors will accommodate 12 to 22 gauge wire Prol870LCR Recommended Amplifier Power 20 200 watts per channel Nominal Impedance 6 ohm nominal 3 2 ohm minimum Frequency Response 60Hz to 20kHz 3 dB Sensitivity 90 dB with 2 83 V pink noise input measured at 1 meter on axis Dimensions 11 W x 17 1 2 H x 15
10. e getting thin or tinny response after adjusting the Tweeter level and the Boundary Compensation switch you may need to decrease the pod level in relation to the woofer s Please remember to also check the settings of your receiver or processor if you cannot achieve satisfactory sound once you have tried adjusting the controls of the loudspeaker INSTALLING THE GRILLE If desired at each loudspeaker carefully fit the grille to its cabinet Starting with one corner gently press the grille frame around the loudspeaker s edge pushing it in at each of the four recessed holes When properly installed the edges of the grille will be nearly flush in appearance with the cabinet OPERATION 10 LISTENING AT HIGHER VOLUMES Achieving a reasonable volume of sound in a large room requires more amplifier power than it does small room It is possible to turn the volume up so high that the amplifier runs out of power This creates clipping distortion which will make treble sound very harsh and unmusical When you hear harsh sounding treble from any good loudspeaker turn the volume down immediately Those harsh sounds are masking much more powerful ultra high frequency sound spikes which will quickly damage any fine loudspeaker You are much less likely to damage a loudspeaker driven by a large amplifier because it will be very loud before any clipping distortion is produced CLEANING Clean the StageFront Hom
11. eater Solutions is a trademark of Niles Audio Corporation All other trademarks are the property of their respective owners DS00508A
12. en running wire inside walls or ceilings use special jacketed cable CL 2 or CL 3 to protect the wire and to meet local electrical and fire codes In some areas conduit is also required For a trouble free installation low voltage wire such as loudspeaker 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 tyoe of conduit to use consult a professional audio video installer building contractor or the local building and inspection department TECH TIP Wire size is expressed by its AWG American Wire Gauge number the lower the number the larger the wire For example 12 AWG is physically larger than 14 AWG LOUDSPEAKER PLACEMENT NOTE STAGEFRONT LCR LOUDSPEAKERS ARE DESIGNED FOR USE IN FRONT LEFT CENTER OR RIGHT CHANNEL APPLICATIONS FOR EFFECT CHANNEL APPLICATIONS WE RECOMMEND USING A STAGEFRONT FX LOUDSPEAKER PLACING THE STAGEFRONT LCR AS THE FRONT LEFT AND RIGHT LOUDSPEAKERS In a home theater the intelligibility of dialog and action reproduced by the front speakers is paramount The position of each loudspeaker plays a very important role in how clear the sound is and how a stereo image is created Here are some guidelines to make the process of placement quick and easy Make sure the sound will not be blocked or reflected off furniture or other objects The
13. er channel performance In a typical installation place the loudspeaker horizontally directly above or below the television or projection screen Try to ensure that the loudspeaker is not placed too high relative to the left and right loudspeaker as shown in Figure 2 The Pro LCR models feature a Midrange Tweeter pod that can be rotated to accommodate horizontal installations If you mount one of these models horizontally please remove the screws that hold this pod in place rotate the pod ninety degrees so that the tweeter is above the midrange and reinstall the screws to reattach the pod to the loudspeaker as shown in Figure 3 CONTINUED ON NEXT PAGE LOUDSPEAKER PLACEMENT CONTINUED Pro1770LCR Optional Placement Above TV Pod rotated tweeter up NY Not Greater than 24 Pro1770LCR Pro1770LCR Not Greater Pod rotated than 24 tweeter up i Pro1770LCR Figure 2 Placing the Stagefront LCR as the center channel loudspeaker above or below a TV For installations where a perforated projection screen will be used place the loudspeaker either horizontally or vertically behind the screen at ear level as shown in Figure 3 Perforated Screen Perforated Screen Pro2870LCR E Pro2870LCR horizontal position vertical position Figure 3 Recommended loudspeaker center channel placement behind a perforated projectio
14. ion Prol77OLCR Prol87OLCR Stock Number Stock Number FG01335 FG01135 Pro2Z70LCR Pro2870LCR Stock Number Stock Number FG01336 FG01136 FEATURES AND BENEFITS INTERLACED CARBON FIBER WOOFERS WITH BUTYL RUBBER SURROUNDS Provide increased sound pressure levels and dynamic theater quality sound at sustained high power output FLUID COOLED TETERON DOME MIDRANGE Pro1770LCR amp Pro2770LCR models only Produces smooth detailed dialog FLUID COOLED CARBON CONE MIDRANGE Pro1870LCR amp Pro2870LCR models only Delivers sustained high output levels and smooth detailed dialog FLUID COOLED TETERON DOME TWEETERS Deliver ultra wide dispersion and silky smooth response ADJUSTABLE CAST ALUMINUM FULLY ENCLOSED DISPERSION CONTROLLING MIDRANGE TWEETER POD Enables precise imaging regardless of placement and accommodates vertical or horizontal installations BOUNDARY GAIN COMPENSATION CONTROL Pro1870LCR amp Pro2870LCR models only Allows precise room matching VARIABLE MIDRANGE AND TREBLE CONTROLS Enables fine tuning after installation CROSS BRACED CABINETS Provides the ultimate in rigidity and sound clarity BI AMP AND BI WIRE CAPABILITIES Optimizes tonal balance and enhances dynamic range POLISHED BLACK CABINET WITH SCULPTED CHARCOAL ALUMINUM GRILLE Provides an elegant yet unobtrusive appearance DOLBY DIGITAL READY The StageFront Home Theater Solutions loudspeakers are exp
15. n screen FINISHING THE INSTALLATION CONNECTING THE LOUDSPEAKER 1 The terminals on your loudspeaker support Bi amp or Bi wire connections as well as standard connections Please choose your preferred method as described below in Figure 5 on page 8 2 At each loudspeaker route the wire to the input connectors then separate the loudspeaker wire so that at least 2 inches of each conductor are free Strip away 1 4 inch of insulation from each loudspeaker wire Using correct polarity connect the appropriate conductor to each five way binding post NOTE OBSERVE CORRECT POLARITY POSITIVE GOES TO THE RED POST AND NEGATIVE Figure 4 Connecting loudspeaker GOES TO THE BLACK POST IF YOU ARE UNSURE OF wires to the terminals WIRE POLARITY SEE THE SECTION CHECKING LOUDSPEAKER PHASE BELOW 3 Connect the other end of the loudspeaker wires to the home theater receiver or amplifier in the same way 4 Turn on the home theater receiver and calibrate all loudspeakers in the system according to the receiver manufacturer s instructions BI WIRE AND BI AMP CHOICES Bi Wiring In a Bi Wired configuration separate cables are connected from the amplifier or receiver output terminals to the speaker input terminals for the tweeter midrange section and the woofers Be sure to remove the straps linking the two sets of input terminals on the speaker Your amplifier and your loudspeakers may be damaged if you do not remove the straps
16. of the conductors Of course there are some wires that appear completely identical So be careful or you might make a connection mistake If you do one loudspeaker will be playing out of phase with the other loudspeaker A pair of out of phase loudspeakers works against each other and the sound of the two playing together will be lacking in bass and sound phasey If you Suspect the sound is not right and you cannot see any markings on the wire try this simple test 1 Stand halfway between the loudspeakers 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 volume control setting When the sound has a richer bass and is slightly louder the loudspeakers are working together or in phase ACOUSTIC FINE TUNING Each StageFront Pro LCR loudspeaker features a variable Treble and Bass Controls The 1870LCR and 2870LCR models also feature Boundary Gain Compensation and Pod Level controls located on the front for acoustic fine tuning after placement as shown in Figure 7 Adjust these controls as follows Ensure that the Treble and Midrange controls are set to Flat 0 dB If Stagefront Pro LCR is placed a room with highly reflective surfaces like glass or tile or the reproduced sound is too bright se
17. ressly designed for superior sonic quality in home theater applications All models exceed the specifications set forth by Dolby Laboratories for the accurate reproduction of Dolby Digital Encoded Sources INSTALLATION CONSIDERATIONS RECOMMENDED AMPLIFIER POWER For satisfactory performance we recommend using a surround amplifier with a power rating of 20 150 watts for the Pro1 0LCR Pro2770LCR We recommend an amplifier power rating of 20 200 watts for the Pro1870LCR and 2870 Most loudspeakers are not damaged by large amplifiers but rather by small amplifiers If your system is playing at high levels a small amplifier will run out of power very quickly and can create damaging clipping distortions A more powerful amplifier will play at the same volume without distorting See OPERATION on page 9 for more information about amplifier clipping distortion LOUDSPEAKER WIRE Use 2 conductor loudspeaker wire when connecting loudspeakers to your receiver or amplifier For most applications we recommend using 16 gauge wire For wiring runs longer than 80 feet we recommend 14 gauge wire Every StageFront Pro loudspeaker features gold plated five way binding posts that will accommodate up to 12 gauge wire directly Larger sizes can be accommodated via pin connectors NOTE THESE FIVE WAY BINDING POSTS BE CONNECTED IN SEVERAL DIFFERENT WAYS E G BANANA PLUGS SPADE TERMINALS AND DIRECT WIRING Wh
18. t the Treble control to 3 dB to lower the high frequency response Listen to dialog being reproduced on the Stagefront Pro LCR If you want it more pronounced set the Midrange control to up to 3dB to enhance the mid frequency response 0dB A x 2 x TREBLE Pop LENE NILES Figure 7 Treble and Midrange Figure 8 Treble Midrange Pod Level and Boundary controls for the Pro1770LCR and Compensation controls for Prol870LCR and Pro2870LCR Pro2770LCR CONTINUED ON NEXT PAGE FINISHING THE INSTALLATION CONTINUED The StageFront Pro1870LCR Pro2870LCR models feature Boundary Compensation and Pod Level controls in addition to those for Treble and Midrange levels These controls are also on the front for acoustic fine tuning after placement as shown in Figure 8 Adjust these controls as follows If a Pro LCR is placed in cabinet or position where the loudspeaker is closer than 2 to 3 feet from a room boundary such as a wall and the sound is boomy please switch the Boundary Compensation switch on You may need to also adjust the Midrange level when using this switch The Pod Level control allows you to adjust the level of the Tweeter and Midrange in relation to the woofer s of the loudspeaker If you are getting boomy response after adjusting the Midrange level and the Boundary Compensation switch you may need to increase the level of the Pod in relation to the woofer s If you ar
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