Niles Audio Comprehensive Manual for Niles Stereo Amplifiers: SI-2100, SI-2150, and SI-250

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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. 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 (-) TERMINALS. THE SIGNAL IS AT THE RED POSITIVE (+) TERMINALS ONLY.

The line level input signal must connect to the left channel input of the amplifier when using bridged mode.

Multiple Speaker Loads

The Niles System Integration Amplifier® 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 amplifier. Note that the System Integration Amplifier® does not have on/off speaker switching built in. When the amplifier is on, so are all of the speakers.

Niles makes a number of different speaker selection and impedance matching systems. Speaker selection systems allow each pair of speakers to be turned on and off from your equipment location (or even via remote control). That way, you know that the speakers in the bedroom are off so you can avoid waking a sleeping spouse! These speaker selectors provide an easy way to terminate all of the wires for more than three pairs. Testing and troubleshooting a new system is much easier with the individual room labels and on/off switches of a Niles speaker selection system. Additionally, Niles speaker selection systems offer impedance matching features which will allow you to connect up to ten pairs of speakers to your Niles System Integration Amplifier®.

NILES AUDIO CORPORATION – 1-800-BUY-HIFI1-760-710-0992

 

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Contents SI- SI- SI Congratulations FCC Required Text Important Safety InstructionsIntroduction Bridgable Power AmplifiersReal World Power Features and BenefitsTransparent Sound Freedom from Fan NoiseBridged Mode Status Display for TroubleshootingLifetime Connections Turn-On ModesPlacement Installation ConsiderationsTurn-On Mode Multiple Speaker Loads Installation ConsiderationsTech TIP Cable and WireTo the amplifier Amplifiers Mm mini-jack for Voltage input Front and Rear Panel DetailsBicolor Status LED illuminates Want to control InstallationOutput maintaining proper polarity FG00933Speaker Wire Connections Bare WireRCA plugs into the amplifier’s jacks Use audio patch cables with RCALine Level Audio Input Cascade Audio OutputsAC Power Plug Plug the male end of the AC powerOperation One channel No sound onContinuity Another cable that is known to be goodAmp will not turn on Hum from the speakersSignal to Noise Average PowerWeight Design PrincipleBUY-HIFI Remedies for Breach of Warranty Limited WarrantyChannel, Bridgable Power Amplifiers 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