Niles-audio SI-275 User Manual

B l e n d i n g Hi g H Fid e l i t y a n d ar c H i t e c t u r e®Systems Integration Amplifier®®INSTALLATION & OPERATION GUIDE

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 whe

Binding posts for speaker connections.IEC receptacle for AC power cord.NOTE: AC receptacle must be easily accessible. FRONT AND REAR PANEL DETAILS10

INSTALLATIONSetting the Turn-On Mode SwitchThe SI-275 has three turn-on modes. Select which mode you desire by sliding the mode switch. See Insta

12INSTALLATION Speaker Wire ConnectionsCAUTION! ALL SPEAKER WIRE CONNECTIONS MUST BE MADE WITH THE AMPLIFIER OFF.Bare Wire Unscrew the red or black

Line Level Audio InputCAUTION! THE AMPLIFIER MUST BE OFF WHENEVER YOU MAKE CHANGES TO THE INPUT CONNECTIONS. Cascade Audio OutputsThe “Cascade Audio O

14INSTALLATION AC Power PlugSTEPPlug the female IEC socket of the sup-plied AC cord into the IEC receptacle on the rear of the amplifier. Plug the tw

OPERATIONPower SwitchThe front panel switch is a master or “vacation” power switch. No matter which turn-on mode you have selected, the master power s

16TROUBLESHOOTING GUIDETROUBLESHOOTING GUIDEWhen there is a problem, consult this guide first. If the problem persists, or you have additional questio

17TROUBLESHOOTING GUIDE (continued)SYMPTOMHum from the speakers Amp will not turn onBass sound is weak and the stereo image is “phasey” or “blurry” so

SPECIFICATIONS18SPECIFICATIONSDesign PrincipleLinear voltage/current amplification.Continuous Average Power Output75 watts per channel RMS at 8 ohms,

CONGRATULATIONS!Thank you for purchasing the Niles SI-275, one of the most flexible and conve-nient amplifiers ever offered. Like all Niles products,

N I L E S Niles Audio Corporation12331 S.W. 130 Street Miami, Florida 33186 Tel: (305) 238-4373 Fax: (305) 238-0185www.nilesaudio.com©2000-2009 N

INTRODUCTIONThe SI-275 is a member of the award-winning Niles Systems Integration Amplifier family. It is designed for home theaters and whole house a

FEATURES AND BENEFITSReal World PowerThe SI-275 delivers 75 watts per channel at 8 ohms and 120 watts per channel at 4 ohms. You’ll get tremendou

Turn-On ModesThe SI-275 features three turn-on modes: 1. Music Sense, 2. External Voltage Trigger, 3. Manual Turn-On via the front p

INSTALLATION CONSIDERATIONSPlacementPlace the SI-275 on a flat level surface like a table or shelf. It should be placed upright so that its weight res

Turn-On ModesThe SI-275 draws more current than a preamplifier’s switched AC outlet can safely supply. Also, your preamplifier may “thump”

Multiple Speaker LoadsThe 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

INSTALLATION CONSIDERATIONS8Cable and WireIt will be easier to reconfigure or troubleshoot your system in the future if you label the cables and wire