Manuel d'utilisation / d'entretien du produit SI-275 du fabricant Niles Audio
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INST ALLA TION & OPERA TION GUIDE B LENDING H IGH F IDELITY AND A RCHITECTURE ® Systems Integration Amplifi er ® ®.
CONGRA TULA TIONS! Thank you for purchasing the Niles SI-275, one of the most flexible and conve- nient amplifiers ever offered. Like all Niles products, the SI-275 is built to the highest standards of quality control and reliability. Wi th p ro pe r in st al la ti on a nd operation, you'll enjoy years of trouble-free use.
INTRODUCTION The SI-275 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-275 delivers 75 watts per channel at 8 Ohms and 1 00 watts per channel at 4 Ohms. You’ll get tremendous bass and dynamics from every pair of speakers powered by an SI-275.
T urn-On Modes The SI-275 features three turn-on modes: 1. Music Sense, 2. External Voltage Trigger, 3. Manual Turn-On via the front panel switch. You can configure the SI-275 to interface with any kind of system and have the unit automatically turn on.
INST ALLA TION CONSIDERA TIONS Placement Place the SI-275 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.
T urn-On Modes The SI-275 draws more current than a preamplifier’s switched AC outlet can safe- ly 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.
Multiple Speaker Loads The SI-275 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 SI-275. Note that the SI-275 does not have on/off speaker switching built in.
INST ALLA TION CONSIDERA TIONS 8 Cable and Wir e 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 ter- minal of the SI-275 they are connected to.
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 Turn-On circuits. Front panel “Master Power” switch turns off the entire amplifier, including the Turn-On circuitry.
Binding posts for speaker connections. IEC receptacle for AC power cord. NOTE: AC receptacle must be easily accessible. FRONT AND REAR P ANEL DET AILS 10 ut a e 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-275 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.
12 INST ALLA TION Speaker Wir e Connections CA UTION! All speaker wire connections must be made with the amplifier Off. Bare W ire 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 CA UTION! THE AMPLIFIER MUST BE OFF WHENEVER Y OU MAKE CHANGES T O 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.
14 INST ALLA TION AC Power Plug STEP Plug the female IEC socket of the sup- plied AC cord into the IEC r eceptacle on the rear of the amplifier . Plug the 2 prong plug into a corr ectly gr ounded 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 cir- cuitry —including the sensing circuitry.
16 TROUBLESHOO TING GUIDE TROUBLESHOO TING 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 1-800-289-4434. The most common problems relate to hook up.
17 TROUBLESHOO TING 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 r oom POSSIBLE CA USES AND TEST PROCEDURE Check for faulty cables, faulty source material, an ungrounded phono system or a defective component.
SPECIFIC A TIONS 18 SPECIFIC A TIONS Design Principle Linear voltage/current amplification. Continuous Average Power Output 75 watts per channel RMS at 8 ohms. 1 00 watts per channel RMS at 4 ohms. Input Impedance Approximately 15K ohms Input Sensitivity .
Niles Audio Corporation www .nilesaudio.com 1 23 3 1 S. W . 1 30 Street Miami, Florida 33 1 86 T el: (305) 238-43 73 Fax: (305) 238-0 1 85 © 2005 Niles A udio Corporation.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Niles Audio SI-275 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Niles Audio SI-275 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Niles Audio SI-275, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Niles Audio SI-275 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Niles Audio SI-275, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Niles Audio SI-275.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Niles Audio SI-275. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Niles Audio SI-275 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
