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DS00354AMY/SI-2125 10/10/03 11:12 AM Page 2
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CONGRATULATIONS!
Thank you for purchasing the Niles SI-2125, one of the most flexible and
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convenient amplifiers ever offered. Like all Niles products, the SI-2125 is built to
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the highest standards of quality control and reliability. With proper installation and
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operation, you'll enjoy years of trouble-free use.
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Niles manufactures the industry's most complete line of custom installation ap
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components and accessories for audio/vid
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INTRODUCTION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 3 INTRODUCTION nd The SI-2125 is a member of the award-winning Niles Systems Integration to Amplifier family. It is designed for home theaters and whole house audio systems and requiring high power. Niles specifically created Systems Integration Amplifiers to solve the problems of interfacing with different brands and models of equipment, different acoustic environments in different rooms, and different kinds of on applications; home thea
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FEATURES AND BENEFITS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 4 FEATURES AND BENEFITS Tu Real World Power The SI-2125 delivers 125 watts per channel at 8 Ohms, 200 watts per channel at Th 4 Ohms and 300 watts bridged at 8 ohms. You’ll get tremendous bass and dynamics 3. from every pair of speakers powered by an SI-2125. SI- Transparent Sound A The audio circuitry of the SI-2125 is constructed using the finest parts available; Th including 1% metal film resistors, high quality capacitors,
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FEATURES AND BENEFITS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 5 Turn-On Modes at The SI-2125 features three turn-on modes: 1. Music Sense 2. External Voltage Trigger cs 3. Manual Turn-On via the front panel switch. You can configure the SI-2125 to interface with any kind of system and have the unit automatically turn on. Automatic Protection le; The SI-2125 is equipped with sophisticated protection circuits. In the unlikely event ks. that a problem occurs, the amplifier shuts itself off.
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INSTALLATION CONSIDERATIONS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 6 Tu INSTALLATION CONSIDERATIONS Th Placement sa am Place the SI-2125 on a flat level surface like a table or shelf. It should be placed am upright so that its weight rests on the four attached feet. Placing the weight of the th amplifier on the rear or front panel for even an instant will result in damage to the amplifier's connectors and controls. The SI-2125, like any hi-fi component, will last much longer if it is given
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INSTALLATION CONSIDERATIONS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 7 Turn-On Modes The SI-2125 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 ed amplifier on only when it is needed. The Turn-On Mode selector switch gives you he three options for turning the SI-2125 on and off. he ate hat If xer ce he et. mal Consta
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INSTALLATION CONSIDERATIONS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 8 Bridged Mode The SI-2125’s bridged mode switch allows you to create a more powerful amplifier by combining both channels into one (8 ohm minumum). 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 (-) TERMIN
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INSTALLATION CONSIDERATIONS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 9 ful ed ed es E Niles SI-2125 Niles HDL-6 Speaker Selection System ely he n. AMPLIFIER SPEAKER 6 SPEAKER 5 SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 on 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 2). PROTECTION Niles Audio Corporation, Inc. Miami, Florida USA Speaker selection systems allow each pair of speakers to be turned on and off from your equipment locati
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FRONT AND REAR PANEL DETAILS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 10 Red “Power” LED confirms the amplifier is Green“Active” LED lights when the connected to a live AC power outlet. (and amplifier circuitry has been turned on by that the master power switch is on). the Turn-On circuits. Front panel “Master Power” switch turns The red “Protect” LED indicates the amp has shut off the entire amplifier, including the down because there is a fault in the speaker, the t wiring, or with the SI-
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FRONT AND REAR PANEL DETAILS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 11 by p has shut Level Adjustment screws enable you to preset aker, the the maximum system volume (or match levels with another amplifier). ble Bridge mode switch IEC receptacle for AC Binding posts for speaker connections. power cord. 10
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INSTALLATION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 12 S INSTALLATION CA Pg. 11 Setting The Turn-On Mode Switch Pg. 13 Line Level Audio Inputs 11 Control Output 13 Cascade Audio Outputs Ba 12 Speaker Wire Connections 14 AC Power plug U bl in en Setting the Turn-On Mode Switch an kn The SI-2125 has three turn-on modes. Select which mode you desire by sliding se the mode switch. See Installation Considerations on page 6 for more information about each of the turn-on modes. Slide the sw
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INSTALLATION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 13 Speaker Wire Connections CAUTION! All speaker wire connections must be made with the amplifier Off. Bare Wire Banana Plugs Unscrew the red or There are many types of black plastic knob, banana plugs, some insert the bare wire crimp, some solder. The end into the opening, Niles gold banana plug and then tighten the has a quick-connect knob until the wire is binding post for the ng securely clamped. bare wire on the body on of the plug
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INSTALLATION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 14 Line Level Audio Input A CAUTION! THE AMPLIFIER MUST BE OFF WHENEVER YOU MAKE CHANGES TO THE INPUT CONNECTIONS. S STEP DESCRIPTION P s 1. Label all of the interconnecting Use audio patch cables with RCA phono r cables for the sources they connect to. plugs attached to the ends. 2. Connect the sources by inserting the Connect outputs from your sources to P RCA plugs into the amplifier’s jacks. inputs on the amplifier. Never connect a
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INSTALLATION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 15 AC Power Plug ES STEP Plug the female IEC socket of the Just like a computer or printer, the SI-2125 supplied AC cord into the IEC has an AC cord which unplugs either at the o receptacle on the rear of the amplifier. amp or at the wall for your convenience. If you use a grounded power strip, surge o Plug the 2 prong plug into suppressor or extension cord, verify that a 120V 60 Hz wall outlet. proper ground is maintained. The SI-2125
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OPERATION DS00354AMY/SI-2125 10/10/03 11:12 AM Page 16 OPERATION T Power Switch W ha The front panel switch is a master or “vacation” power switch. No matter which at turn-on mode you have selected, the master power switch will turn off all yo 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 S switch out). When you would like to return to normal operation, turn the switch ”On” (pu
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TROUBLESHOOTING GUIDE DS00354AMY/SI-2125 10/10/03 11:12 AM Page 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 ch at 1-800-289-4434. The most common problems relate to hook up. Call from all your telephone extension nearest the system. or on POSSIBLE CAUSES AND TEST PROCEDURE SYMPTOM ch No sound on one channel Short circuit or loose wire at the speaker
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TROUBLESHOOTING GUIDE DS00354AMY/SI-2125 10/10/03 11:12 AM Page 18 TROUBLESHOOTING GUIDE (continued) S POSSIBLE CAUSES AND TEST PROCEDURE De SYMPTOM Li Check for faulty cables, faulty source material, an Hum from the speakers Co ungrounded phono system or a defective component. 12 20 30 Amp will not turn on AC power cord must be plugged into a working outlet. In Master power switch must be on. 18 In .8 Bass sound is weak and The loudspeakers are wired out of phase. the stereo image is Revers
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SPECIFICATIONS DS00354AMY/SI-2125 10/10/03 11:12 AM Page 19 SPECIFICATIONS Design Principle Linear voltage/current amplification. Continuous Average Power Output 125 watts per channel RMS at 8 ohms. 200 watts per channel RMS at 4 ohms. 300 watts bridged channel RMS at 8 ohms. Input Impedance 18K ohms Input Sensitivity .878V for 8 Ω rated output Overall Voltage Gain 33 dB Frequency Response Bandwidth Limited from 10 Hz to 100 kHz Total Harmonic Distortion 8 Ohms .02% THD from 20 Hz to 20 kHz @
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DS00354AMY/SI-2125 10/10/03 11:12 AM Page 20 Niles Audio Corporation www.nilesaudio.com 12331 S.W. 130 Street ©2003 Niles Audio Corporation. Because Niles strives to continuously improve its products, Niles reserves the right to change product specifications without notice. Miami, Florida 33186 Niles, the Niles logo and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation. Systems Integration Amplifier and Tel: (305) 238-4373 BusMatrix are trademark
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DS00354AMY/SI-2125 10/10/03 11:12 AM Page 21 INSTALLATION & OPERATION GUIDE SI-2 125 ® Systems Integration Amplifier ® e its ce. red and /03 ® B LENDING H IGH F IDELITY AND A RCHITECTURE
