Instruction/ maintenance manual of the product SI-2125 Niles Audio
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CONGRA TULA TIONS! Thank you for purchasing the Niles SI-2125, one of the most flexible and convenient amplifiers ever offered. Like all Niles products, the SI-2125 is built to the highest standards of quality control and reliability . W ith proper installation and operation, you'll enjoy years of trouble-free use.
nd to and on ite: 2 3 5 9 11 15 16 8 an the the ude e is ant the INTRODUCTION The SI-2125 is a member of the award-winning Niles Systems Integration Amplifier family . It is designed for home theaters and whole house audio systems requiring high power .
FEA TURES AND BENEFITS Real W orld Power The SI-2125 delivers 125 watts per channel at 8 Ohms, 200 watts per channel at 4 Ohms and 300 watts bridged at 8 ohms. Y ou’ll get tremendous bass and dynamics from every pair of speakers powered by an SI-2125.
at cs le; ks. th his alk ds gs en ely ou as out Tu rn-On Modes The SI-2125 features three turn-on modes: 1. Music Sense 2. External V oltage T rigger 3. Manual T urn-On via the front panel switch. Y ou can configure the SI-2125 to interface with any kind of system and have the unit automatically turn on.
INST ALLA TION CONSIDERA TIONS Placement Place the SI-2125 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.
ed he he ate hat If xer ce he et. mal ful ble ve Tu rn-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.
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.
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Bi Red “Power” LED confirms the amplifier is connected to a live AC power outlet. (and that the master power switch is on). Green“Active” LED lights when the amplifier circuitry has been turned on by the T urn-On circuits. Front panel “Master Power” switch turns off the entire amplifier , including the T urn-On circuitry .
Binding posts for speaker connections. Bridge mode switch IEC receptacle for AC power cord. FRONT AND REAR P ANEL DET AILS 10 by p has shut aker , the Level Adjustment screws enable you to preset the maximum system volume (or match levels with another amplifier).
INST ALLA TION Setting the T urn- On Mode Switch The SI-2125 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.
ng on 12 INST ALLA TION Speaker Wir e 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.
Line Level Audio Input CAUTION! THE AMPLIFIER MUST BE OFF WHENEVER YOU MAKE CHANGES TO THE INPUT CONNECTIONS. Cascade Audio Outputs The “Cascade Audio Outputs” enable you to connect another amplifier to your preamplifier output. The connectors are gold-plated RCA phono jacks.
ES ur ect uts ou will 15 ur ve o o a 14 INST ALLA TION AC Power Plug STEP Plug the female IEC socket of the supplied AC cord into the IEC r eceptacle on the rear of the amplifier . Plug the 2 prong plug into 1 20V 60 Hz wall outlet. CAUTION! T ypically the preamp/r eceiver’ s switched outlet is not rated for a power amplifier .
OPERA TION 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 cir cuitry .
ch all or on ch er ill wn . he er he ce. ve or pe, 16 TROUBLESHOOTING GUIDE 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 T echnical Support at 1-800-289-4434.
17 TROUBLESHOOTING GUIDE (continued) SYMPTOM Hum from the speakers Amp will not turn on Bass sound is weak and the stereo image is “phasey” or “blurry” sounding in one room POSSIBLE CAUSES AND TEST PROCEDURE Check for faulty cables, faulty source material, an ungrounded phono system or a defective component.
SPECIFICA TIONS 18 SPECIFICA TIONS 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 .
B N iles Audio Corporation www .nilesaudio.com 12 33 1 S. W . 1 30 Street M iami, Florida 3 3 1 86 T el: (305) 238-43 73 Fax: (305) 238-0 1 85 © 2003 Niles Audio Corporation. Because Niles strives to continuously improve its products, Niles reserves the right to change pr oduct specifications without notice.
INST ALLA TION & OPERA TION GUIDE B LENDING H IGH F IDELITY AND A RCHITECTURE ® e its ce. red and /03 Systems Integration Amplif ier ® ® SI-2 1 2 5 DS00354A MY /SI-2125 10/10/03 11:12 AM Page 2.
An important point after buying a device Niles Audio SI-2125 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Niles Audio SI-2125 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Niles Audio SI-2125 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Niles Audio SI-2125 you will learn all the available features of the product, as well as information on its operation. The information that you get Niles Audio SI-2125 will certainly help you make a decision on the purchase.
If you already are a holder of Niles Audio SI-2125, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Niles Audio SI-2125.
However, one of the most important roles played by the user manual is to help in solving problems with Niles Audio SI-2125. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Niles Audio SI-2125 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
