Niles Audio SI-245 
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Niles Audio SI-245
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Niles Audio SI-245 Details


Real World Power
The SI-245 delivers 45 watts per channel at 8 Ohms and 70 watts per channel at
4 Ohms. You’ll get tremendous bass and dynamics from every pair of speakers
powered by an SI-245.

Transparent Sound
The audio circuitry of the SI-245 is constructed using the finest parts available;
including 1% metal film resistors, high quality capacitors, and oversized heat sinks.
All this attention to technical detail creates a sound that is clear and uncolored with
phenomenal imaging.

Freedom From Crosstalk
Each channel of the SI-245 is powered via its own independent power supply. This
increases the isolation between the two channels, and minimizes cross talk guaranteeing you absolute silence as the backdrop to your music.

Current For Reactive Loads
The high current design of the SI-245 assures that even unusual and reactive loads are handled with aplomb (a massive toroidal transformer with two separate windings, one for each of the independent power supplies, provides more than ample current
to your system).

Freedom from Fan Noise
The oversized heat sinks inside the SI-245 allow the amplifier to stay cool even when
operating into low impedance loads—without the noise of fan-cooled amplifiers.

Independent Level Controls
Each channel has its own independent level control enabling you to precisely
match the SI-245 to the rest of your system. The level controls also enable you to
limit the volume, preventing abuse of the system.

Lifetime Connections
The SI-245 features stereo inputs, cascade stereo outputs, and five-way binding
posts which are all gold plated to ensure perfect connections without corrosion for
years to come.

Turn-On Modes
The SI-245 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-245 to interface with any kind of system and have the unit automatically turn on.

Automatic Protection
The SI-245 is equipped with sophisticated protection circuits. In the unlikely event
that a problem occurs, the amplifier shuts itself off. When conditions return to normal,
regular operation resumes.

Status Display for Troubleshooting
LED's on the front panel indicate Power, Active Status, and a Protection Warning. With a glance at the front panel, a troubleshooter is quickly provided with key information!

Control Output
A 12 volt DC output is provided whenever the amplifier is on, allowing you to
operate voltage-triggered devices like motorized screens and curtains.

Niles Audio SI-245 Specifications

  • Fully discrete stereo amplifier
  • 45 watts RMS per channel into 8 ohms, both channels driven
  • 70 watts RMS per channel into 4 ohms, both channels driven
  • Designed to drive multiple pairs of speakers connected in parallel: Stable into low-impedance loads (2.66 ohms)
  • Three turn-on modes: music sense, voltage trigger and manual
  • 5-way binding posts
  • 12-volt control out
  • Voltage trigger input accepts 3-30V AC/DC
  • Removable 2-wire line cord
  • Left and right channel installer adjustable level controls
  • Automatic resetting, DC, short circuit and overload protection
  • Two year limited warranty
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