Troubleshooting Guide, No sound on one channel

TROUBLESHOOTING GUIDE

When there is a problem consult this guide first. If the problem persists, or you have additional questions, call your local Niles dealer or Niles Technical Support at 1-800-289-4434. The most common problems relate to hook up. Call from your telephone extension nearest the system.

SYMPTOM	POSSIBLE CAUSES AND TEST PROCEDURE
No sound on one channel	Short circuit or loose wire at the speaker or amplifi-
	er terminals. Check that the connections are secure
	and that there are no loose strands of wire crossing
	from the positive to the negative terminals at the
	back of the amplifier and /or the speaker.
	Short circuit or a break in the speaker wire. Dis-
	connect the speaker wire at both ends, separate the
	2 conductors at both ends and test with a meter for
	a short circuit. If there is no short, connect the two
	conductors at one end and test with a meter for
	continuity.
	Speaker is not working. Connect the speaker to a
	channel that plays another speaker.
	Audio cable to input is bad. Connect another cable
	that is known to be good.

No sound on both channels	Audio cable to the main inputs is bad. Connect
	another cable that is known to be good.

Hum from the speakers	Hum may be caused by a ground loop between
	two of the other components in the system. To test
	for another ground loop, try reversing the AC plugs
	of each of the components in the system.

TROUBLESHOOTING GUIDE

SI-275 specifications

The Niles Audio SI-275 is a high-performance stereo amplifier designed to meet the demands of both residential and commercial audio systems. Known for its reliability and sound quality, the SI-275 offers a range of features that make it a suitable choice for various audio applications, from home theaters to multi-room audio systems.

One of the standout features of the SI-275 is its robust power output. The amplifier delivers up to 75 watts per channel at 8 ohms, ensuring that it can drive a wide range of speakers with high efficiency. This power output expands to 100 watts per channel at 4 ohms, making it versatile enough to handle different speaker impedances. The SI-275 is equipped to deliver dynamic sound with clarity and detail, whether listening to music or watching movies.

The amp incorporates advanced technologies that enhance its performance. It utilizes a Class A/B design, which balances power efficiency and sound quality. This design ensures low distortion and high fidelity, resulting in an immersive listening experience. The SI-275 also features a built-in protection circuit that safeguards against thermal overload and short circuits, which is crucial for ensuring long-term reliability.

In addition to its power and efficiency, the SI-275 is designed with ease of use in mind. It includes both RCA and balanced XLR inputs, allowing for versatile connectivity options with various audio sources. The front panel includes LED indicators that provide status information, making it simple to monitor the unit's performance. Furthermore, the amplifier is equipped with a 12V trigger input and output, allowing for easy integration with other components in a home audio system.

The SI-275's compact and sturdy design contributes to its adaptability in different environments. Its rugged construction ensures durability, while the sleek finish allows it to blend seamlessly into any décor, whether in a rack-mounted setup or displayed openly in a living space.

Overall, the Niles Audio SI-275 stereo amplifier stands out as a reliable and high-quality option for audio enthusiasts. With its powerful output, advanced technologies, and user-friendly features, it delivers impressive sound performance that meets the needs of various audio applications, making it a worthy investment for anyone looking to enhance their audio experience.

TROUBLESHOOTING GUIDE

No sound on one channel

Hum from the speakers

SI-275 specifications