How to Troubleshoot System Noise

AC grounding becomes critical when connecting high performance audio components. When you mix and match audio components, each with its own ground potential, a low frequency hum may occur in one or both loudspeakers. This sometimes occurs when introducing a new component into a system.

If a low frequency hum emanates from the loudspeakers when you place the KAV–280p preamplifier into the system, follow these sim- ple troubleshooting steps:

1.Check all cable terminations, making sure they have solid sol- der joints and are of sound construction.

2.With the system amplifier off, remove the interconnect cables, from all the analog source components to the KAV–280p. (Leave the interconnect cables from the KAV–280p to the sys- tem amplifier.) Turn the amplifier back on.

3.If the hum disappears, turn the amplifier off and reinsert the interconnect cables from one of the analog source compo- nents. Turn the amplifier back on and select, on the KAV–280p, the source component you have just connected. Carefully increase the volume on the KAV–280p. If the hum reappears in one or both channels, those interconnect cables may be defective. Have the interconnect cables checked before proceeding.

4.Repeat Step 3 for each analog source component. Connect only one new component at a time. There is no need to dis- connect source components you have already connected.

5.If the interconnect cables are sound, you may be experiencing a ground loop. Please contact your authorized Krell dealer, dis- tributor, or Krell for suggestions on how to solve this problem.

20	Krell KAV–280p

KAV280p specifications

Krell Industries has long been synonymous with high-end audio performance, and the KAV-280p is no exception. As a powerful yet elegant preamplifier, the KAV-280p embodies Krell's commitment to delivering stunning sound quality while embracing cutting-edge technology. This article will explore the main features, technologies, and characteristics that make the KAV-280p a standout component in any audio setup.

At the heart of the KAV-280p is its robust design, which showcases Krell's extensive engineering prowess. The preamplifier boasts a fully-balanced differential architecture that allows for minimal signal interference, ensuring an uncolored audio output. This approach is key to achieving the high level of transparency and fidelity that audiophiles demand. With both analog and digital input options, including balanced XLR and unbalanced RCA connections, the KAV-280p can seamlessly integrate into a variety of audio systems.

The KAV-280p also features a sophisticated power supply that provides a clean and stable voltage, essential for optimal performance. This power supply utilizes high-capacity transformers and multiple stages of regulation, ensuring that the preamp delivers power where it's needed most, reducing distortion and enhancing overall sound quality. The result is a preamplifier capable of handling dynamic music passages with ease, rendering bass, mids, and highs in exquisite detail.

Another noteworthy characteristic of the KAV-280p is its intuitive user interface. With a simple and elegant remote control, users can easily navigate through input selections and adjust settings for an enhanced listening experience. The preamp also includes a high-quality headphone output, making it a versatile choice for those who enjoy private listening sessions.

Moreover, Krell's engineering team has designed the KAV-280p with a focus on heat management, ensuring a long lifespan and consistent performance. The use of aluminum for the chassis aids in heat dissipation while adding an aesthetically pleasing touch to any audio rack.

In summary, the Krell KAV-280p is a distinguished preamplifier that encapsulates Krell Industries' dedication to audio excellence. With its advanced engineering, high-quality components, and user-friendly design, the KAV-280p stands as a testament to what high-end audio equipment can achieve, making it an exceptional choice for audiophiles seeking the ultimate listening experience.