Troubleshooting System Noise

When you mix and match high-performance audio components, each with its own ground potential, a low frequency hum may occur in one or all loudspeakers. If this happens when you place the S–1500 Multi-channel Amplifier into your system, follow these simple troubleshooting steps:

1.Check that all input and output connections are of sound construction.

2.With the amplifier off, remove all the interconnect cables, then turn the amplifier on. If the hum disappears, turn the amplifier off and reinsert one of the interconnect cables. Turn the amplifier back on.

3.If the hum reappears with the interconnect cable reinserted, the cable may need to be replaced. Turn the amplifier off and connect a different interconnect cable to the same location. Turn the amplifier back on.

4.If the hum disappears with the interconnect cable reinserted, that cable most likely is sound.

5.Turn the amplifier off, disconnect the interconnect cable, and re-connect one of the other interconnect cables.

6.Repeat steps 3 through 5 until you have checked each inter- connect cable.

7.If all the interconnect cables appear to be sound, and you still have hum, you may be experiencing a ground loop. Please contact your authorized Krell dealer, distributor, or Krell for sug- gestions on how to eliminate the hum.

16	Krell S–1500 Multi-channel Amplifier

S1500 specifications

Krell Industries is renowned for its commitment to high-performance audio equipment, and the S1500 is a notable addition to their lineup of amplifiers. The Krell S1500 is a powerful, flexible, and highly efficient multi-channel amplifier designed primarily for home theater and sophisticated audio setups. With a robust power output of 150 watts per channel into 8 ohms and an impressive capability to drive even lower impedances, the S1500 ensures dynamic audio reproduction that is suitable for various applications.

One of the standout features of the S1500 is its Class A/B amplifier topology. This design combines the benefits of both Class A and Class B amplification, delivering clear and accurate sound reproduction while offering high efficiency. Krell has engineered the S1500 with sophisticated thermal management systems, ensuring that the amplifier runs cool, even during long listening sessions or demanding audio playback scenarios.

The S1500 employs advanced circuit topologies that minimize distortion and enhance signal integrity. This results in pristine audio quality, capable of handling the delicacy of classical pieces as well as the demands of high-action films. Krell’s proprietary technologies, such as the Krell Current Mode, maximize the amplifier's performance by ensuring that it can respond instantaneously to changes in the audio signal, which is crucial for dynamic sound reproduction.

Connectivity on the S1500 is generous, featuring balanced and unbalanced inputs to cater to a variety of audio sources. This flexibility allows the amplifier to integrate seamlessly into any high-end audio or home theater system. Additionally, the amplifier includes extensive protection circuitry to safeguard against short circuits, overheating, and overload conditions, contributing to its durability and reliability.

The design aesthetic of the S1500 reflects Krell's commitment to both form and function, with a sleek, modern chassis that complements any audio setup. The amplifier also features a user-friendly front panel that provides access to status indicators and controls, making it easy for users to operate.

In summary, the Krell Industries S1500 is a meticulously designed multi-channel amplifier that combines advanced technologies with robust power output, ensuring an unparalleled listening experience. Its exceptional audio fidelity, smart thermal management, and extensive connectivity options make it a top choice for audiophiles and home theater enthusiasts alike. Whether for music or movies, the S1500 stands as a testament to Krell’s legacy of excellence in audio engineering.