2 Channel, Bridgable Power Amplifiers

Installation

Bridging Two Channels into One

The SI-1230’s bridging switches allow you to create a more powerful amplifier channel by combining or “bridging” two adjacent channels.

3

 

BRIDGED

4

LEVEL

 

USE CH 4

LEVEL

 

 

 

WHEN

 

 

 

BRIDGED

 

 

L

 

 

L

BUS

R

 

BUS

R

L+R

L+R

 

3

 

 

4

Slide the bridging switch in the direction of the arrow to bridge two adjacent amplifier channels. Set the controls of the newly bridged pair by using the EVEN numbered channel.

When two channels are bridged together, connect speakers to the two terminals labeled “Bridged”.

BRIDGED –

BRIDGED +

12

STEP

DESCRIPTION

1.Choose which of the six pairs you wish to bridge and move the bridging switch for that pair to the “Bridged” position (toward arrow).

The 12 channels are grouped into 6 pairs (e.g. 1 & 2). Only the two channels within a pair can be bridged. Thus, only channels 1 and 2, or channels 3 and 4 could be bridged. You cannot bridge 2 and 3 for example.

CAUTION! Do not connect a speaker load of

A bridged channel on a SI-1230 is designed for an eight

ohm minimum load. Connecting a speaker with a nominal

less than eight ohms to a bridged channel.

impedance of less than 8 ohms may cause the SI-1230 to

 

go into protection or be damaged.

 

 

2. Connect the speaker wires to the two

Connect your speaker wire only to the red terminals of the

Bridged speaker terminals (BRIDGED

two adjacent amplifier channels. If one of the speaker wires

+, BRIDGED -). Observe proper polarity

touches a black terminal (thereby grounding the red “hot”

markings.

terminals) you will short circuit the amplifier.

 

 

CAUTION! DO NOT connect a speaker selector

These connections to a bridged channel pair will result in

or headphone junction box to the output of a

either thermal shutdown or poor quality sound.

bridged channel pair.

 

 

 

3.Use the EVEN NUMBERED input, DIP switch, and level control for connections and configuration.

When two channels are bridged into one, make sure that the odd numbered input DIP switches are all in the “off” position.

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

 

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Niles Audio SI-1230 manual Go into protection or be damaged, Connect the speaker wires to the two, Bridged channel pair

SI-1230 specifications

The Niles Audio SI-1230 is a standout model in the world of multi-channel amplifiers, designed to deliver outstanding audio performance for both home theater and whole-house audio systems. This amplifier is noted for its exceptional power, advanced features, and reliability, making it an ideal choice for audiophiles and professional installers alike.

One of the main features of the SI-1230 is its robust power output. The amplifier delivers 30 watts per channel across all 12 channels. This consistent output ensures that every speaker in a multi-room setup receives adequate power, resulting in clear and dynamic sound reproduction. The SI-1230 is capable of driving a variety of speaker configurations, accommodating different layouts and preferences.

Another key characteristic of the SI-1230 is its incorporation of advanced technologies that enhance performance and ease of use. The amplifier features a high-performance, Class D design. Class D amplification is known for its efficiency, allowing the SI-1230 to maintain high output levels while minimizing heat generation and reducing power consumption. Additionally, this design ensures a compact form factor, making it easier to integrate into various environments.

The product also supports multiple input options, including both balanced and unbalanced connections. This versatility ensures compatibility with a wide range of audio sources, such as CD players, streaming devices, and home theater processors. The SI-1230 is equipped with a signal-sensing input that allows it to automatically power on and off, providing a convenient solution for energy conservation.

In terms of build quality, the Niles Audio SI-1230 is constructed with durable materials designed for longevity. It has a sleek design that can fit seamlessly into any home or commercial setting.

Moreover, it includes protection features to prevent overheating, short circuits, and power surges, which enhances its reliability. The amplifier also provides extensive control options allowing users to adjust settings as needed for optimal performance.

In summary, the Niles Audio SI-1230 is a powerful, efficient, and versatile multi-channel amplifier. Its combination of advanced technology, robust audio output, and user-friendly features makes it an excellent choice for enhancing audio experiences in both residential and commercial environments. Whether for a home theater setup or a multi-room audio system, the SI-1230 stands out as a reliable solution for high-quality sound reproduction.