Niles Audio SI-2150 Stereo Amplifier User Manual
Contents
1. eO eOe eO 2 2 fo 2 CABLE AND WIRE It will be easier to reconfigure or troubleshoot your system in the future if you label the cables and wires for their destination or source rather than which terminal of the Niles System Integration Amplifier they are connected to The Niles System Integration Amplifier connects to your sources via shielded line level audio cables with RCA phono plugs Use high quality cables with your Niles amplifier for the lowest possible noise and best overall performance Your Niles dealer can recommend the proper cable The Niles System Integration Amplifier connects to your speakers using 2 conductor speaker wire For most applications we recommend you use 16 or 18 gauge wire For wiring runs longer than 80 feet we recommend 14 gauge wire The binding posts of the Niles System Integration Amplifier will accommodate up to 12 gauge wire Larger sizes can be accommodated by attaching banana plugs to the wire Note that the binding posts accept dual banana or single banana 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 10 ee _2. NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 19 R NILES SPECIFICATIONS Design Principle Continuous Average Power Output Continuous Average Power Output Bridged Frequency Response Signal to Noise Ratio Total Harmonic Distortion Channel Separation Overall Dimensions Weight AC Mains 20 SI 2100 SI 2150 Fully discrete high Digital high current Digital high current current bridgeable bridgeable stereo bridgeable stereo stereo amplifier amplifier amplifier 50 watts RMS per 100 watts RMS per 150 watts RMS per channel into 8 Ohms channel into 8 Ohms channel into 8 Ohms 100 watts RMS per 220 watts RMS per 270 watts RMS per channel into 4 Ohms channel into 4 Ohms channel into 4 Ohms all channels driven all channels driven all channels driven 225 wats RMS per 400 wats RMS per 550 wats RMS per channel into 8 Ohms channel into 8 Ohms channel into 8 Ohms Bandwidth from 5 Hz Bandwidth from 5 Hz Bandwidth from 5 Hz to 25 kHz 0dB 3B to 25 kHz 0dB 3B to 25 kHz 0dB 3B 20Hz to 20kHz 20Hz to 20kHz 20Hz to 20kHz unweighted gt 102 dB unweighted gt 102 dB unweighted gt 102 dB 0 2 THD from 0 2 THD from 0 2 THD from 20 Hz to 20 kHz 20 Hz to 20 kHz 20 Hz to 20 kHz 1kHz gt 70dB 1kHz gt 70dB 1kHz gt 70dB y 14 43 81 cm wide 2 44 H 6 cm iy including feet 13 34 35 cm deep 10 7 Ib 4 8
3. Do not expose batteries to excessive heat such as sunshine fire or the like 19 Open flame sources such as lighted candles should NOT be placed on the apparatus WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product FCC Required Text NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turnin
4. When conditions return to normal regular operation resumes STATUS DISPLAY FOR TROUBLESHOOTING LED indicators on the front panel indicate Power Active Status and a Protection Warning With a glance at the front panel a troubleshooter is quickly provided with key information CONTROL OUTPUT A 12 Volt DC output is provided whenever the amplifier is on allowing you to operate voltage triggered devices like motorized screens and curtains BRIDGED MODE The Niles System Integration Amplifier family can be operated in a bridged mono configuration In this configuration the SI 250 the SI 2100 and the SI 2150 deliver 225 watts 400 watts and 550 watts respectively Bridged mode is perfect for subwoofer rock speakers or any applications requiring high power output COMPACT 1U DESIGN The SI 250 the SI 2100 and the SI 2150 all share the same compact low profile design requiring only a single rack space 1U DESIGNED AND ENGINEERED IN THE USA Limited two year parts and labor warranty 6 WW ILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS INSTALLATION CONSIDERATIONS PLACEMENT Place the Niles System Integration Amplifier on a flat level surface like a table or shelf It should be placed upright so that its weight rests on the four attached feet Placing the weight of the amplifier on the rear or front panel for even an instant will result in damage to the amplifier s connectors and controls The Niles System Integ
5. WW LESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS FRONT AND REAR PANEL DETAILS Front panel Master Power switch turns off the entire amplifier including the Turn On circuitry Main Inputs enable you to route a stereo line level source to the amplifier Cascade Outputs of the main input enable you to daisy chain multiple amplifiers 3 5 mm mini jack for voltage input sl 250 This Class B digital apparatus complies with Canadian This device complies with Part 15 of the FCC Rules ICES 003 Operation is subject to the following two conditions Systems Cet appareil num rique de a classe B est conforme la 1 this device may not cause harmful interference and lutegration norme NMB 003 du Canada L L 2 this device must accept any interference received Amplifier including interference that may cause undesired FOR operation BRIDGED f TURN ON MODE L R MODE s AUDIO SENSE ee BRIDGED CONSTANT TRIGGER 12V 4 LEFT INPUT CONTROL Turn On Mode Bridge mode switch switch 3 5 mm mini jack for Level Adjustment screws enable you to 12V DC control output preset the maximum system volume or match levels with another amplifier NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 11 Rf NILES FRONT AND REAR PANEL DETAILS Bicolor Status L
6. for warranty service evaluation or installation of any replacement product provided under this warranty This Warranty will be void if e the Serial Number on the product has been removed tampered with or defaced e the product was not purchased from an authorized dealer or reseller THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESSED AND IMPLIED WARRANTIES NILES EXPRESSLY DISCLAIMS ALL SUCH OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT WITH RESPECT TO THE PRODUCT TO THE MAXIMUM EXTENT PERMITTED BY LAW NILES SHALL NOT BE RESPONSIBLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EXCEPT TO THE EXTENT PROVIDED OR PROHIBITED BY APPLICABLE LAW EVEN IF NILES HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Notwithstanding the above if you qualify as a consumer under the Magnuson Moss Warranty Act or applicable state laws then you may be entitled to any implied warranties allowed by law for the Warranty Period Further some states do not allow limitations on how long an implied warranty lasts or allow the exclusion or limitation of consequential damages so such limitations 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 THE AVC GROUP 1969 Kellogg Avenue Carlsbad CA 92008
7. kg 10 8 Ib 4 9 kg 10 8 Ib 4 9 kg 100 120 220 240 V 100 120 220 240 V 100 120 220 240 V 50 60 Hz 200 W 50 60 Hz 300 W 50 60 Hz 400 W WWW NILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS BY PHONE IN USA 1 800 BUY HIFI 289 4434 BY PHONE OUTSIDE USA 1 760 710 0992 CUSTOMER SERVICE HOURS 8 00 AM to 5 30 PM PT TECHNICAL SUPPORT HOURS 6 00 AM to 4 00 PM PT ON THE WEB www nilesaudio com EMAIL TECHNICAL SUPPORT techsupport nilesaudio com EMAIL FOR PRODUCT SUGGESTIONS productsuggestions nilesaudio com NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 __ DT PANIES LIMITED WARRANTY Niles Audio Corporation NILES warrants to the original retail purchaser only that this product will be free of manufacturing defects in material and workmanship for the following periods and subject to the limitations and exclusions set forth below Lifetime Warranty All Passive Amplifier Products those not requiring AC or battery power Ten years from the date of purchase All Other Passive Products those not requiring AC or battery power Two years from the date of purchase All Active Products those requiring AC or battery power This warranty is not transferable to subsequent purchasers of the product To obtain warranty service contact the authorized dealer where you purchased your product or take the unit to the nearest authorized NILES dealer with proof of purchase cla
8. toroidal transformer SI 250 and cutting edge digital power supplies SI 2100 SI 2150 provide more than ample current to your system FREEDOM FROM FAN NOISE The oversized heat sinks inside the System Integration Amplifiers allow the amplifier circuitry to stay cool even when operating into low impedance loads without the distracting noise created when using fan cooled amplifiers INDEPENDENT LEVEL CONTROLS Each amplifier channel features an independent level control enabling precise volume matching to the rest of the system These level controls can also limit volume to prevent abuse of the system NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 5 Rf NILES FEATURES AND BENEFITS LIFETIME CONNECTIONS The Niles System Integration Amplifier family features gold plated stereo inputs cascade stereo outputs and five way binding posts to ensure perfect connections without corrosion for years to come TURN ON MODES The Niles System Integration Amplifier family features three turn on modes 1 Music Sense 2 External Voltage Trigger 3 Manual Turn On via the front panel switch You can configure a Niles Systems Integration Amplifier to interface with any kind of system and have the unit automatically turn on AUTOMATIC PROTECTION The Niles System Integration Amplifier family is equipped with sophisticated protection circuits In the unlikely event that a problem occurs the amplifier shuts itself off
9. 2150 150 watts x 2 System Integration Amplifiers SI 250 SI 2100 SI 2150 QA sss WWW NILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS FEATURES AND BENEFITS REAL WORLD POWER The SI 250 the SI 2100 and the SI 2150 deliver 50 watts 100 watts and 150 watts per channel at 8 ohms and 100 watts 220 watts 270 watts per channel at 4 ohms respectively You ll get tremendous bass and dynamics from every pair of speakers connected TRANSPARENT SOUND The audio circuitry of the Niles System Integration Amplifiers is constructed using the finest parts available including 1 metal film resistors high quality capacitors and oversized heat sinks All this attention to technical detail creates a sound that is clear and uncolored with phenomenal imaging FREEDOM FROM CROSSTALK Each channel of the Niles System Integration Amplifier is powered via its own independent power supply This increases the isolation between the two channels and eliminates cross talk guaranteeing you absolute silence as the backdrop to your music CURRENT FOR REACTIVE LOADS The high current design of the Niles System Integration Amplifiers assures that even unusual and reactive loads are handled with ease A massive
10. AMPLIFIERS INSTALLATION GUIDE SI 2500 SI 2100 SI 2150 PANIES CONGRATULATIONS Thank you for purchasing a Niles Systems Integration Amplifier one of the most flexible and convenient amplifiers ever offered Like all Niles products your new amplifier is built to the highest standards of quality control and reliability With proper installation and operation you ll enjoy years of trouble free use TABLE OF CONTENTS Introduction 4 Features and benefits 5 Installation Considerations 7 Front and rear panel details 11 Installation 13 Operation 17 Troubleshooting guide 18 Specifications 20 N WWW NILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with a dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong is provided for y
11. E or TRIGGER INPUT Use of the CONSTANT mode will prevent the amplifier from turning off when not in use wasting energy CONTROL OUTPUT This terminal provides a 12V DC signal suitable for triggering Niles automated iN switchers some motorized screens some electric curtain controls etc The trigger voltage is present only when the amplifier is active or on When the amplifier turns off the 12 Volt signal is off STEP DESCRIPTION 1 Check the requirements of the device you The control output has a maximum want to control current capability of 12V DC 150 mA 2 Connect the 3 5 mm Jack to the control output maintaining proper polarity tip Niles makes an accessory cable plug FG00933 NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 __ 13 Rf NILES INSTALLATION SPEAKER WIRE CONNECTIONS CAUTION All speaker wire connections must be made with the amplifier off Bare Wire Unscrew the red or black plastic knob insert the bare wire end into the opening and then tighten the knob until the wire is securely clamped 1 Label all wires 2 Connect one stripped wire end or banana plug to the black terminal and one to the red terminal Banana Plugs There are many types of banana plugs some crimp some solder The Niles gold banana plug has 3 quick connect binding post for the bare wire on the body of the plug A banana plug is simply inserted int
12. ED illuminates green when the amplifier circuitry Power LED illuminates to confirm has been turned on by the Turn On the amplifier is connected to a _ circuits and illuminates red to live AC power outlet and that the indicate activation of the amplifier s master power switch is on built in protection circuitry R NILES Coa 100 120V 220 240V Mii i d 3 2660 stereo mode CAUTION 7 60Hz 200W 40 bridged mode ic SHOCK ee Niles Audio Carlsbad California USA anaa only wih spme type and mia et fuse kz ATTENTION la F it le m r Designed and Engineered in the U S A Made in China XS _ Cubes of Binding posts for Replaceable main IEC receptacle for speaker connections power fuse AC power cord 12 sO WWWNILESAUDIO cCoM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS INSTALLATION SETTING THE TURN ON MODE SWITCH The Niles System Integration Amplifier has three turn on modes Select which mode you desire by sliding the mode switch See Installation Considerations on page 6 for more information about each of the turn on modes Audio sense is the factory default setting I Slide the switch with UNN mobi your fingernail or a 1 8 AUDIO SENSE slotted screwdriver blade Rape CONSTANT TRIGGER 12V INPUT CONTROL OUT TIP To conserve energy set the TURN ON mode to either AUDIO SENS
13. fier to your preamplifier output The connectors are gold plated RCA phono jacks Connect them to another amplifier s inputs with a standard audio patch cable The outputs are not buffered if you wish to daisy chain more than 5 Niles System Integration Amplifier amplifiers you will need a Niles AVDA 3 buffered distribution amplifier A single AVDA 3 will allow you to daisy chain 5 amplifiers from each of its three outputs allowing for as many as 30 Niles System Integration Amplifier models to be fed from the same master preamplifier If your preamp has a vacuum tube output stage you must use a Niles AVDA 3 to drive more than a single Niles System Integration Amplifier NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 15 Rf NILES INSTALLATION AC POWER PLUG 1 Plug the female IEC socket of the supplied AC power cord the supplied power cord is designed for 120V AC wall outlets or use an appropriate IEC AC power cord to match the electrical wall outlet you are using e g 240V AC into the IEC receptacle on the rear of the amplifier 2 Plug the male end of the AC power n piy a correctly grounded wall outlet DESCRIPTION Just like a computer or printer the Niles System Integration Amplifier has an AC cord which unplugs either at the amp or at the wall for your convenience If you use a grounded power strip surge suppressor or extension cord verify that proper grou
14. from the positive to the negative terminals at the back of the amplifier and or the speaker Short circuit or a break in the speaker wire Disconnect the No sound on speaker wire at both ends separate the 2 conductors at both one channel ends and test with a meter for a short circuit If there is no short connect the two conductors at one end and test with a meter for continuity Speaker is not working Connect the speaker to a channel that plays another speaker Audio cable to input is bad Connect another cable that is known to be good No sound on Audio cable to the main inputs is bad Connect another cable that both channels is known to be good Hum may be caused by a ground loop between two of the other components in the system To test for another ground loop try reversing the ac plugs of each of the components in the system Hum from the speakers 1 WW LESAuIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS TROUBLESHOOTING GUIDE Symptom Possible Causes and Test Procedure Check for faulty cables faulty source material an Hum from the speakers ungrounded phono system or a defective component AC power cord must be plugged into a working outlet Amp will not turn on Master power switch must be on Bass sound is weak and the stereo image The loudspeakers are wired out of phase Reverse the is phasey or blurry connections at the back of one speaker sounding in one room
15. g the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet ona circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 Rf NILES INTRODUCTION The Niles SI 250 the Niles SI 2100 and the Niles SI 2150 are members of the award winning Niles Systems Integration Amplifier family They are designed for home theaters and whole house audio systems requiring high power The Niles System Integration Amplifier family is specifically created to solve the problems of interfacing with different brands and models of equipment different acoustic environments in different rooms and different kinds of applications home theater stereo and background music The Niles Systems Integration Amplifier family brings extremely high current power to a custom installed A V System in a remarkably convenient way This guide contains information for the proper use of the Niles SI 250 50 watts x 2 the Niles SI 2100 100 watts x 2 and the Niles SI
16. he Niles System Integration Amplifier itself LEVEL ADJUSTMENT SCREWS The rear panel level adjustment screws allow you to adjust the level of the Niles System Integration Amplifier relative to other amplifiers in your system Use a 1 8 slotted screwdriver to adjust the screws If the Niles System Integration Amplifier is the only amplifier in your system leave the screws at their factory default setting 12 00 position CLEANING AND MAINTENANCE The internal parts of the Niles System Integration Amplifier are electronic and require no maintenance Once a year it is appropriate to twist the RCA connectors on each input to remove corrosion and improve conductivity You can clean the amplifier with soft cloth or paper towel dampened with water or a mild detergent Do not use any spray type abrasive cleaners on the amplifier NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 17 TROUBLESHOOTING GUIDE When there is a problem consult this guide first If the problem persists or you have additional questions call your local Niles dealer or Niles Technical Support at 1 800 BUY HIFI 289 4434 or 760 710 0992 The most common problems relate to hook up Call from your telephone extension nearest the system Symptom Possible Causes and Test Procedure Short circuit or loose wire at the speaker or amplifier terminals Check that the connections are secure and that there are no loose strands of wire crossing
17. ims made without proof of purchase will be denied 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 contact NILES to receive a factory Return Authorization Number DO NOT RETURN ANY UNIT WITHOUT FIRST RECEIVING WRITTEN AUTHORIZATION AND SHIPPING INSTRUCTIONS FROM NILES Upon examination NILES will at its sole option and expense repair or replace any product found to be defective NILES will return the repaired or replaced unit to you via its usual shipping method from the factory to your address in the United States of America or Canada only Any shipping costs for addresses outside of the United States or Canada shall be the responsibility of the purchaser In the event that this model is no longer available and cannot be repaired effectively NILES at its sole option may replace it with a different model of equal or greater value or refund the original purchase price paid THE FOREGOING ARE YOUR EXCLUSIVE REMEDIES FOR BREACH OF WARRANTY This Warranty does not include service or parts to repair damage caused by improper use or handling including but not limited to damage caused by accident mishandling improper installation commercial use abuse negligence or normal wear and tear or any defect caused by repair to the product by anyone other than NILES This warranty does not cover reimbursement for your costs of removing and transporting the product
18. l input signal must connect to the left channel input of the amplifier when using bridged mode MULTIPLE SPEAKER LOADS The Niles System Integration Amplifier is stable into very low impedance loads This means you can safely operate three pairs of 8 ohm speakers a 2 67 ohm load directly connected to the amplifier Note that the System Integration Amplifier does not have on off speaker switching built in When the amplifier is on so are all of the speakers Niles makes a number of different speaker selection and impedance matching systems Speaker selection systems allow each pair of speakers to be turned on and off from your equipment location or even via remote control That way you know that the speakers in the bedroom are off so you can avoid waking a sleeping spouse These speaker selectors provide an easy way to terminate all of the wires for more than three pairs Testing and troubleshooting a new system is much easier with the individual room labels and on off switches of a Niles speaker selection system Additionally Niles speaker selection systems offer impedance matching features which will allow you to connect up to ten pairs of speakers to your Niles System Integration Amplifier NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 _____9W9 ___ Q9 Y N INSTALLATION CONSIDERATIONS TE NILES e
19. nd is maintained CAUTION Typically a preamp receiver s switched outlet is not rated for a power amplifier The SI 250 the SI 2100 and the SI 2150 draw 200 watts 300 watts and 400 watts maximum from an AC wall outlet respectively Use a dedicated AC wall outlet along with the amplifier s auto turn on circuit to ensure adequate power 16 WWW NILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS OPERATION POWER SWITCH The front panel switch is a master or vacation power switch No matter which turn on mode you have selected the master power switch will turn off all circuitry including the sensing circuitry If you will not be using the amplifier for an extended period of time turn the master power switch Off push button switch out When you would like to return to normal operation turn the switch On push button switch in Important Notes Equipment is not completely disconnected from main power source when power switch is in the OFF position POWER LED The power LED indicates that the AC cord is plugged into a working AC power receptacle and that the power switch is in the On position BICOLOR STATUS LED The bicolor Status LED illuminates green when the amplifier circuitry has been turned on by the Turn On circuits and illuminates red to indicate activation of the amplifier s built in protection circuitry due to either a fault in the wiring or the speaker or with t
20. o the jack at the end of the amplifier s binding post Dual banana plugs will fit the binding post DESCRIPTION If you label the wires for their destination rather than which terminal of the Niles System Integration Amplifier they are connected to it will be easier to reconfigure your system in the future A Split the speaker wire insulation so that at least two inches of each conductor are separated B Strip one half inch of insulation from the end of each conductor of the speaker wire C Attach banana plugs or twist the strands of wire together and insert them into the appropriate binding post CAUTION Avoid even a single strand of wire touching the chassis or another connector 14 WWW NILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS INSTALLATION LINE LEVEL AUDIO INPUT CAUTION The amplifier must be off whenever you make changes to the input connections STEP DESCRIPTION 1 Label all of the interconnecting cables Use audio patch cables with RCA for the sources they connect to phono plugs attached to the ends Connect outputs from your sources to inputs on the amplifier Never 2 Connect the sources by inserting the connect a source or preamplifier s RCA plugs into the amplifier s jacks input e g record inputs to the inputs of your Niles System Integration Amplifier CASCADE AUDIO OUTPUTS The Cascade Audio Outputs enable you to connect another ampli
21. or call 800 BUY HIFI 289 4434 or 760 710 0992 Please be advised that NILES only sells its products via the Internet through a select group of authorized Internet dealers These are listed on our website at www nilesaudio com Products offered on the Internet through unauthorized Internet dealers are not covered by the NILES warranty and may be either 1 goods acquired on a secondary or grey market 2 counterfeit or stolen goods 3 damaged or defective goods Please fill in your product information and retain for your records ATTENTION TO OUR VALUED CONSUMERS To insure that consumers obtain quality pre sale and after sale support and service NILES products are sold exclusively through authorized dealers This warranty is VOID if the products have been purchased from an unauthorized dealer 22 ___ WWWNILESAUDIO COM 2 CHANNEL BRIDGABLE POWER AMPLIFIERS NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 23 NILES BLENDING HIGH FIDELITY AND ARCHITECTURE 1690 Corporate Circle Petaluma CA 94954 1 760 710 0992 1 800 BUY HIFI www nilesaudio com 2012 Core Brands LLC All rights reserved Niles and the Niles logos are registered trademarks of Core Brands LLC All other trademarks are the property of their respective owners We reserve the right to change specifications descriptions and prices without notice The technical and other information contained herein is not intended
22. our safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liquids such as vases are placed on the apparatus 16 To completely disconnect this apparatus from the AC Mains disconnect the power supply cord plug from the AC receptacle 17 The power supply cord sometimes referred to as the Mains Plug is used as the disconnect device and shall remain accessible and operable at all times 18
23. ration Amplifier like any hi fi component will last much longer if it is given adequate ventilation for proper cooling When installing the Niles System Integration Amplifier in a cabinet be sure that the rear of the cabinet is open to fresh air to provide proper cooling see Figure 1 If the cabinet s design will not accommodate an open rear install two small boxer fans to provide continuous air flow into and out of the cabinet see Figure 2 Place the Niles System Integration Amplifier so that there is at least 7 of free air space above the chassis If the amplifier is located on a carpeted surface place a board under the amplifier s feet Do not block the ventilation holes on the top and bottom of the Niles System Integration Amplifier CAUTION When using low impedance speaker loads less than 8 ohms Normal Mode refer to Figure 2 for proper placement Figure 1 Figure 2 Boxer Fan 55 CFM directly centered 7 Boxer Fan 65 CFM on top of the Amplifer directly centered 2 behind the Amplifier CLL LLL Make sure that there is a minimum of 7 of free air space above the amplifier for proper ventilation ANN WLLLLLLLL LLL LLL LLL LL LLL LLL If the cabinet rear is not open to fresh air or if you re using low impedance loads install two boxer fans to provide continuous air flow into and out of the Allow a minimum of 2 of depth behind unit cabine
24. sition for the voltage trigger to function When a Trigger Plug is inserted into the rear panel connector and the sensing circuitry detects a voltage the amplifier is turned on Once the Trigger voltage is turned off the sensing circuit instantly turns the amplifier off The amplifier is off when there is no 3 24V AC or DC voltage detected at the trigger input Voltage triggers can be supplied by Niles automated switchers some video projectors some surround sound processors or something as simple as a 12 volt AC wall adapter plugged into the switched outlet of your stereo receiver Linear DC wall adapters are not recommended the long discharge time of the DC adapter s filter capacitor will delay the turn off of the amplifier Trigger sources must be 3 24VAC or DC 20mA or greater 8 SSS wwiesaupio com 2 CHANNEL BRIDGABLE POWER AMPLIFIERS INSTALLATION CONSIDERATIONS BRIDGED MODE The Niles System Integration Amplifier bridged mode switch allows you to create a more powerful amplifier by combining both channels into one 8 ohm minimum Stereo mode is the factory default setting In the bridged mode connect the speakers to the left red positive terminal and the right red positive terminal In the bridged mode the right channel s red terminal becomes positive and the left channel s red terminal becomes negative DO NOT USE THE BLACK NEGATIVE TERMINALS THE SIGNAL IS AT THE RED POSITIVE TERMINALS ONLY The line leve
25. t to accommodate cables and connectors NILES AUDIO CORPORATION 1 800 BUY HIFI 1 760 710 0992 7 PANIES INSTALLATION CONSIDERATIONS TURN ON MODES The Niles System Integration Amplifier draws more current than a preamplifiers switched AC outlet can safely supply Also your preamplifier may thump at dangerous volumes if the amplifier is already on when the preamp turns on It is usually best to turn the amplifier on only when it is needed The Turn On Mode selector switch gives you three options for turning the amplifier on and off Audio sense is the factory default setting TURN ON MODE AUDIO SENSE Acc CONSTANT H THCEER 1907 INPUT CONTROL OUT CONSTANT The auto turn on circuitry is off The front panel master power switch operates the amplifier In is On out is Off AUDIO SENSE The master switch on the front panel must be in the On position The amplifier is off when there is no audio signal present at either the left or the right input but the sensing circuitry is on The turn on sensing circuitry looks for a tiny amount of audio signal present at any of the audio inputs If it detects a signal the amplifier is turned on Once the audio signal stops the sensing circuit waits two minutes then turns the amplifier off 3 24 VOLT AC DC OPTO ISOLATED VOLTAGE TRIGGER The Power switch on the front panel must be in the On po
26. to set forth all technical and other specifications Designed and engineered in the USA 9901253 Rev D
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