Niles Audio SI-2150, SI-250, SI-2100 User Manual

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Niles Audio SI-2150, SI-250, SI-2100 User Manual

AMPLIFIERS

I N S T A l l a t i o n G u i d e

SI- SI- SI-

CONGRATULATIONS!

Thank you for purchasing a Niles Systems Integration Amplifier®, one of the most flexible and convenient amplifiers ever offered. Like all Niles products, your new amplifier is built to the highest standards of quality control and reliability. With proper installation and operation, you’ll enjoy years of trouble-free use.

TABLE OF CONTENTS

Introduction

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Features and benefits

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Installation Considerations

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Front and rear panel details

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Installation

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Operation

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Troubleshooting guide

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Specifications

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2 Channel, Bridgable Power Amplifiers

Important Safety Instructions

1.Read these instructions.

2.Keep these instructions.

3.Heed all warnings.

4.Follow all instructions.

5.Do not use this apparatus near water.

6.Clean only with a dry cloth.

7.Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8.Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus (including amplifiers) that produce heat.

9.Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A groundingtype plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10.Protect the power cord from being walked on

or pinched, particularly at plugs, convenience receptacles and the point where they exit from the apparatus.

11.Only use attachments/accessories specified by the manufacturer.

12.Use only with the cart, stand,

tripod, bracket or table specified by the manufacturer or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13.Unplug this apparatus during lightning storms or when unused for long periods of time.

14.Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15.Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the apparatus.

16.To completely disconnect this apparatus from the AC Mains, disconnect the power supply cord plug from the AC receptacle.

17.The power supply cord (sometimes referred

to as the “Mains Plug”) is used as the disconnect device and shall remain accessible and operable at all times.

18. Do not expose batteries to excessive heat such as sunshine, fire or the like.

19. Open flame sources, such as lighted candles, should NOT be placed on the apparatus.

WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure

that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important

operating and maintenance (servicing) instructions in the literature accompanying the product.

FCC Required Text:

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate, radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

—Reorient or relocate the receiving antenna.

—Increase the separation between the equipment and receiver.

—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

—Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

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

 

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Introduction

The Niles SI-250, the Niles SI-2100 and the Niles SI-2150 are members of the award-winning Niles Systems Integration Amplifier® family. They are designed for home theaters and whole house audio systems requiring high power.

The Niles System Integration Amplifier family is specifically created to solve the problems of interfacing with different brands and models of equipment, different acoustic environments in different rooms, and different kinds of applications: home theater, stereo, and background music. The Niles Systems Integration Amplifier family brings extremely high current power to a custom installed A/V System in a remarkably convenient way.

This guide contains information for the proper use of the Niles SI-250 (50 watts x 2), the Niles SI-2100 (100 watts x 2) and the Niles SI-2150 (150 watts x 2) System Integration Amplifiers®.

Bridgable Power Amplifiers

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2 Channel, Bridgable Power Amplifiers

Features and Benefits

Real World Power

The SI-250, the SI-2100 and the SI-2150 deliver 50 watts, 100 watts, and 150 watts per channel at 8 ohms and 100 watts, 220 watts, 270 watts per channel at 4 ohms respectively. You’ll get tremendous bass and dynamics from every pair of speakers connected.

Transparent Sound

The audio circuitry of the Niles System Integration Amplifiers® 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 Niles System Integration Amplifier is powered via its own independent power supply. This increases the isolation between the two channels and eliminates cross talk, guaranteeing you absolute silence as the backdrop to your music.

Current for Reactive Loads

The high current design of the Niles System Integration Amplifiers assures that even unusual and reactive loads are handled with ease. A massive toroidal transformer (SI-250) and cutting edge digital power supplies (SI-2100, SI-2150) provide more than ample current to your system.

Freedom from Fan Noise

The oversized heat sinks inside the System Integration Amplifiers allow the amplifier circuitry to stay cool even when operating into low impedance loads without the distracting noise created when using fan-cooled amplifiers.

Independent Level Controls

Each amplifier channel features an independent level control enabling precise volume matching to the rest of the system. These level controls can also limit volume to prevent abuse of the system.

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

 

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Features and Benefits

Lifetime Connections

The Niles System Integration Amplifier® family features gold plated stereo inputs, cascade stereo outputs, and five way binding posts to ensure perfect connections without corrosion for years to come.

Turn-On Modes

The Niles System Integration Amplifier® family features three turn-on modes: 1. Music Sense, 2. External Voltage Trigger, 3. Manual Turn-On via the front panel switch. You can configure a Niles Systems Integration Amplifier® to interface with any kind of system and have the unit automatically turn on.

Automatic Protection

The Niles System Integration Amplifier® family 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 indicators 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.

Bridged Mode

The Niles System Integration Amplifier® family can be operated in a bridged mono configuration. In this configuration, the SI-250, the SI-2100 and the SI-2150 deliver 225 watts, 400 watts, and 550 watts respectively. Bridged mode is perfect for subwoofer, rock speakers or any applications requiring high power output.

Compact 1U Design

The SI-250, the SI-2100 and the SI-2150 all share the same compact low profile design requiring only a single rack space (1U).

Designed and Engineered in the USA

Limited two-year parts and labor warranty.

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2 Channel, Bridgable Power Amplifiers

Installation Considerations

Placement

Place the Niles System Integration Amplifier® 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.

The Niles System Integration Amplifier®, like any hi-fi component, will last much longer if it is given adequate ventilation for proper cooling. When installing

the Niles System Integration Amplifier® in a cabinet, be sure that the rear of the cabinet is open to fresh air to provide proper cooling (see Figure 1). If the cabinet’s design will not accommodate an open rear, install two small “boxer fans” to provide continuous air flow into and out of the cabinet (see Figure 2). Place the Niles System Integration Amplifier® so that there is at least 7” of free air space above the chassis. If the amplifier is located on a carpeted surface, place a board under the amplifier’s feet. Do not block the ventilation holes on the top and bottom of the Niles System Integration Amplifier®.

CAUTION! When using low impedance speaker loads (less than 8 ohms Normal Mode) refer to Figure 2 for proper placement.

Figure 1

Figure 2

Boxer Fan (55 CFM) directly centered 7” on top of the Amplifer.

Boxer Fan (55 CFM) directly centered 2” behind the Amplifier.

Make sure that there is a minimum of 7” of free air space above the amplifier for proper ventilation.

Allow a minimum of 2” of depth behind unit to accommodate cables and connectors.

If the cabinet rear is not open to fresh air or if you’re using low impedance loads, install two “boxer fans” to provide continuous air flow into and out of the cabinet.

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

 

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Installation Considerations

Turn-On Modes

The Niles System Integration Amplifier® 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. It is usually best to turn the amplifier on only when it is needed. The Turn-On Mode selector switch gives you three options for turning the amplifier on and off. Audio sense is the factory default setting.

S y s t e m s

I n t e g r a t i o n

A m p l i f i e r ®

TURN ON MODE

AUDIO SENSE

3-30V AC/DC CONSTANT TRIGGER

INPUT

12V CONTROL OUT

 

 

 

 

 

This device complies with Part 1

 

 

 

 

 

Operation is subject to the follo

 

 

 

L

L

(1) this device may not cause ha

 

 

 

(2) this device must accept any

 

LEVELS

 

FOR

 

including interference that may

 

 

 

operation.

 

 

 

 

 

 

L

 

R

BRIDGED

 

 

 

 

MODE

 

 

 

 

 

 

 

 

 

 

 

 

R

R

STEREO

BRIDGE

 

 

 

 

 

 

 

 

MAIN BUS

BUS

 

 

 

 

 

INPUT

OUTPUT

 

 

Constant - The auto turn-on circuitry is off. The front panel master power switch operates the amplifier. In is “On”, out is “Off”.

Audio Sense - The master switch on the front panel must be in the “On” position. The amplifier is off when there is no audio signal present at either the left or the right input, but the sensing circuitry is on. The turn-on sensing circuitry looks for a tiny amount of audio signal present at any of the audio inputs. If it detects a signal, the amplifier is turned on. Once the audio signal stops, the sensing circuit waits two minutes, then turns the amplifier off.

3-24 VOLT AC/DC OPTO-ISOLATED VOLTAGE TRIGGER - The Power switch on the front panel must be in the “On” position for the voltage trigger to function. When a Trigger Plug is inserted into the rear panel connector and the sensing circuitry detects a voltage, the amplifier is turned on. Once the Trigger voltage is turned off, the sensing circuit instantly turns the amplifier off. The amplifier is off when there is no 3-24V AC or DC voltage detected at the trigger input. Voltage triggers can be supplied by Niles automated switchers, some video projectors, some surround sound processors, or something as simple as a 12 volt AC wall adapter plugged into the switched outlet of your stereo receiver. Linear DC wall adapters are not recommended; the long discharge time of the DC adapter’s filter capacitor will delay the turn-off of the amplifier. Trigger sources must be 3-24VAC or DC, 20mA or greater.

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