SYMPTOM

POSSIBLE CAUSES AND TEST PROCEDURE

Very low or no sound on

1. Bridging Switch is in wrong position. Check your con-

some or all channels.

figuration worksheet for the correct setting and verify.

 

 

2. Audio cable to the input is bad. Connect a cable

 

known to be good to the non-working channel.

 

 

Hum from all of the speakers.

Hum can be caused due to a ground potential differ-

 

ence between connected components (especially those

 

connected to antenna or cable TV feeds).

 

1. Check for faulty cables; faulty source signals; an

 

ungrounded phono system, cable feed, and/or a

 

defective component.

 

2. Reverse the AC plug of components with non-polar-

 

ized plugs.

 

3. Test the AC receptacle using a Ground Tester.

 

 

Sound is distorted on one or

1. DIP switch(es) are not in the correct position(s).

more channels at normal

Check the worksheet and verify all settings.

volume.

2. If the channel pair LED is Yellow, then the channel is

 

 

being overdriven (volume set too high on the pream-

 

plifier). The channel volume level should be re-cali-

 

brated to avoid this condition (refer to page 25 for infor-

 

mation on Using Level Controls as Limiters).

 

 

No sound on any channels

Amplifier has an internal defect requiring service.

and power LED is slowly

Contact your Niles dealer for service information.

blinking.

 

 

 

Bass is weak and stereo

1. Check that the Bridging Switch is "OFF". If two adja-

sound is "phasey".

cent channels are connected normally but the bridg-

 

ing switch is set to the "BRIDGED" position, the two

 

speakers will be out of phase.

 

2. The speakers are wired out of phase. Recheck polar-

 

ity and reverse the connections on the back of one

 

speaker if necessary.

 

 

A speaker connected to a

Check that the Bridging Switch is "ON".

bridged pair of amplifier

 

channels sounds weak.

 

 

 

TROUBLESHOOTING GUIDE

28

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Niles Audio SI-1260 Some or all channels, More channels at normal, Volume, No sound on any channels, Power LED is slowly
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SI-1260 specifications

The Niles Audio SI-1260 is a high-performance multi-channel amplifier designed to deliver exceptional sound quality and power for home audio systems. Renowned for its reliability and versatility, this amplifier is perfect for both custom installations and standalone use, catering to audiophiles and casual listeners alike.

One of the standout features of the SI-1260 is its impressive power output. With 60 watts per channel at 8 ohms, this amp provides ample power to drive a variety of speakers, ensuring clear and dynamic sound reproduction across different genres of music and audio formats. For users who require additional power, the SI-1260 can deliver 100 watts per channel at 4 ohms, making it suitable for larger rooms and demanding setups.

The SI-1260 employs advanced Class D amplification technology, which is known for its efficiency and minimal heat generation. This not only leads to lower energy consumption but also allows for a more compact design—a crucial aspect for home installations where space can be at a premium. The amplifier’s compact size does not compromise its performance; it boasts a robust output that maintains sound integrity even at higher volumes.

Another significant advantage of the SI-1260 is its versatile connectivity options. Equipped with multiple inputs, including RCA and balanced XLR connections, users can seamlessly integrate it into their existing audio systems. This flexibility allows the amplifier to work well with a variety of audio sources, including home theater systems, whole-house audio systems, and more.

The SI-1260 also incorporates advanced protection circuitry, safeguarding against overloads, short circuits, and overheating. This ensures not only the longevity of the amplifier itself but also the longevity of connected speakers, providing peace of mind for users.

For those who appreciate ease of use, the Niles Audio SI-1260 features a universal control interface, allowing compatibility with remote control systems and automation. This makes it an ideal choice for smart home integrations, enhancing the user's overall audio experience.

In conclusion, the Niles Audio SI-1260 stands out as a feature-rich, powerful, and efficient multi-channel amplifier suitable for a wide range of audio applications. With its excellent power output, advanced Class D technology, versatile connectivity, and reliable protection features, it delivers high-quality sound that meets the demands of modern audio enthusiasts.
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