AMPLIFIERS SI- I N S T A l l ati o n SI- G u i d e SI-
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.
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.
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.
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.
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.
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.
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.
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.
Installation Considerations S y s t e m s I n t e g r a t i o n A m p l i f i e r ® AM PLIFIER L+ NI LES N iles Audio Corporation,Inc.
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. S I - 2 5 0 S y s t e m s I n t e g r a t i o n A m p l i f i e r ® Cascade Outputs of the main input enable you to daisy chain multiple amplifiers Main Inputs enable you to route a stereo line level source to the amplifier. 3.5 mm mini-jack for voltage input This Class B digital apparatus complies with Canadian ICES-003.
Front and Rear Panel Details 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 Power LED illuminates to confirm the amplifier is connected to a live AC power outlet and that the master power switch is on WIRING 100-120V / 220-240V~ 50 / 60Hz 200W Minimum impedance: 2.66 Ω (stereo mode) 4 Ω (bridged mode) Serial No.
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.
Installation Speaker Wire Connections Caution! All speaker wire connections must be made with the amplifier off. 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 into the jack at the end of the amplifier’s binding post. Dual banana plugs will fit the binding post.
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. 2. Connect the sources by inserting the RCA plugs into the amplifier’s jacks. Connect outputs from your sources to inputs on the amplifier.
Installation AC Power Plug STEP DESCRIPTION 1. P lug 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. 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. 2.
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).
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. 18 Symptom Possible Causes and Test Procedure No sound on one channel Short circuit or loose wire at the speaker or amplifier terminals.
2 Channel, Bridgable Power Amplifiers TroubleShooting Guide Symptom Possible Causes and Test Procedure Hum from the speakers Check for faulty cables, faulty source material, an ungrounded phono system or a defective component. Amp will not turn on AC power cord must be plugged into a working outlet. Master power switch must be on. Bass sound is weak and the stereo image is “phasey” or “blurry” sounding in one room The loudspeakers are wired out of phase.
Specifications SI-250 SI-2100 SI-2150 Design Principle Fully discrete, high current bridgeable stereo amplifier Digital, high current bridgeable stereo amplifier Digital, high current bridgeable stereo amplifier Continuous Average Power Output 50 watts RMS per channel into 8 Ohms, 100 watts RMS per channel into 4 Ohms (all channels driven) 100 watts RMS per channel into 8 Ohms, 220 watts RMS per channel into 4 Ohms (all channels driven) 150 watts RMS per channel into 8 Ohms, 270 watts RMS per cha
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 w w w.nilesaudio.com email technical support techsupport@nilesaudio.com email for product suggestions productsuggestions@nilesaudio.
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).
2 Channel, Bridgable Power Amplifiers Notes NILES AUDIO CORPORATION – 1-800-BUY-HIFI – 1-760-710-0992 23
1690 Corporate Circle, Petaluma, CA 94954 1-760-710-0992 1 - 8 0 0 - B U Y- H I F I – w w w. n i l e s a u d i o . c o m ©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.
