What is IEC 60268-21:2013?

IEC 60268-21:2013 is an international standard that defines the performance requirements and test methods for audio amplifiers. This standard, published by the International Electrotechnical Commission (IEC), establishes a set of guidelines to ensure the quality and reliability of audio amplifiers used in various applications.

Scope and Application

The scope of IEC 60268-21:2013 covers audio amplifiers designed for professional or consumer use, including amplifiers used in sound systems, broadcasting, recording studios, and home audio equipment. It applies to both analog and digital amplifiers, regardless of the technology or the circuit design used.

The standard provides a comprehensive list of performance criteria that an audio amplifier must meet to comply with the established quality standards. Some of the key parameters covered by the standard include frequency response, output power, distortion, noise, and electromagnetic compatibility.

Performance Requirements

The performance requirements outlined in IEC 60268-21:2013 are essential to ensure that audio amplifiers deliver accurate, high-quality sound reproduction with minimal distortion and interference. For example, the standard specifies the acceptable frequency range within which the amplifier should operate and the maximum level of harmonic and intermodulation distortion allowed. These requirements help guarantee faithful reproduction of the input audio signal.

The standard also sets limits for the amplifier's noise floor, ensuring that any noise generated by the amplifier itself is kept to a minimum. This requirement is particularly important in professional audio applications where low noise is critical for clear and accurate audio recordings or performances.

Test Methods

To verify compliance with the performance requirements, IEC 60268-21:2013 provides a set of test methods that manufacturers can use during the design and production of audio amplifiers. These tests involve measuring various parameters such as frequency response, distortion, output power, and noise under controlled conditions.

The standard provides detailed instructions on test setups, measurement techniques, and equipment requirements to ensure the accuracy and consistency of the test results across different laboratories or testing facilities. By following these standardized test methods, manufacturers can evaluate the performance of their amplifiers objectively and compare them with the required specifications.

In conclusion, IEC 60268-21:2013 is a crucial standard in the audio industry, setting requirements for the performance and quality of audio amplifiers. It helps ensure that amplifiers meet specific criteria for accurate sound reproduction, low distortion, minimal noise, and compliance with electromagnetic compatibility standards. Manufacturers and consumers alike can benefit from this standard by having confidence in the performance and interoperability of audio amplifiers.