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AMPLIFIERS
INST All A TI o N Gu I de
SI- SI- SI-
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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
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2 Channel, BridgaBle Power maPlifiers ImpORTANT SAFETy INSTRUCTIONS 1. Read these instructions. 19. Open flame sources, such as lighted candles, should NOT be placed on the apparatus. 2. Keep these instructions. WARNING: To reduce the risk of fire or electric 3. Heed all warnings. shock, do not expose this apparatus to rain or 4. Follow all instructions. moisture. 5. Do not use this apparatus near water. The lightning flash with arrowhead symbol, within an equilateral triangle, is 6. Clean
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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,
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2 Channel, BridgaBle Power mP a lifiers 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. TRANSp ARENT SOUNd ® The audio circuitry of the Niles System Integration Amplifiers is constructed using the finest parts available; including 1% metal film resi
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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 inter
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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 Integration Amplifier , like any hi-fi component, will last much longer if it
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INSTALLATION CONSIdERATIONS TURN-ON mOdES ® The Niles System Integration Amplifier draws more current than a preamplifier’s 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. 100-120V / 2
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2 Channel, BridgaBle Power maPlifiers INSTALLATION CONSIERA d TIONS 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
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INSTALLATION CONSIdERATIONS Sy stem s Integr atio n Ampl if ie r ® AMPLIFIER SPEAKER 6 SPEAKER 5 SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ ON OFF NILES CONSTANT PROTECTION Niles Audio Corporation,Inc. Miami, Florida USA 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 Ni
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2 Channel, BridgaBle Power maPlifiers FRONT ANd REAR ANEL p dETAILS Front panel “Master Power” switch turns off the entire amplifier, including the Turn-On circuitry. ® Sy s t e m s I n t e g r a t i o n A m p lif ie r S I -2 5 0 Cascade Outputs of the Main Inputs enable you to main input enable you route a stereo line level source to daisy chain multiple to the amplifier. amplifiers 3.5 mm mini-jack for voltage input 100-120V / 220-240V~ This Class B digital apparatus complies with Ca
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FRONT ANd REAR ANEL p dETAILS Bicolor Status LED illuminates “green” when the amplifier circuitry has been turned on by the Turn-On Power LED illuminates to confirm circuits, and illuminates “red” to the amplifier is connected to a indicate activation of the amplifier’s live AC power outlet and that the built-in protection circuitry master power switch is on ® S I -2 5 0 Sy s t e m s I n t e g r a t i o n A m p lif ie r 100-120V / 220-240V~ This Class B digital apparatus complies with Ca
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2 Channel, BridgaBle Power maPlifiers 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. 100-120V / 220-240V~ This device complies with Part 15 of the FCC Rules. Minimum impedance: CLASS 2 WIRING 50 / 60Hz 600W Operation is subject to the
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INSTALLATION SpEAkER wIRE CONNECTIONS CAuTIoN! All speaker wire connections must be made with the amplifier off. Banana Plugs There are many types of Bare Wire banana plugs, some crimp, Unscrew the red or some solder. The Niles black plastic knob, gold banana plug has 3 insert the bare wire quick-connect binding end into the opening, post for the bare wire on and then tighten the the body of the plug. A knob until the wire is banana plug is simply securely clamped inserted into the jack
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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
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INSTALLATION AC pOwER pLUG STEP DESCRIPTION 1. Plug the female IEC socket of the supplied AC power cord (the supplied Just like a computer or printer, the power cord is designed for 120V AC ® Niles System Integration Amplifier wall outlets), or use an appropriate has an AC cord which unplugs IEC AC power cord to match the either at the amp or at the wall for electrical wall outlet you are using your convenience. (e.g. 240V AC), into the IEC receptacle on the rear of the amplifier. I
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2 Channel, BridgaBle Power aP m lifiers 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). Importa
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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 ther
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2 Channel, BridgaBle Power maPlifiers TROUBLEShOOTING GUIE d 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. soun
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SpECIFICATIONS SI-250 SI-2100 SI-2150 Fully discrete, high Digital, high current Digital, high current Design Principle current bridgeable bridgeable stereo bridgeable stereo stereo amplifier amplifier amplifier 50 watts RMS per 100 watts RMS per 150 watts RMS per Continuous channel into 8 Ohms, channel into 8 Ohms, channel into 8 Ohms, Average Power 100 watts RMS per 220 watts RMS per 270 watts RMS per channel into 4 Ohms channel into 4 Ohms channel into 4 Ohms Output (all channels drive
