QC Unique Feature - Ensuring Stability, Maximum Output and Low Distortion
The performance of electrodynamic transducers is significantly influenced by their nonlinear characteristics, which are determined during the design phase and are influenced by factors such as cost and market targets. While the nonlinearity of fixed components like magnets and pole plates is generally stable, variations in moving parts, particularly the suspension, can lead to voice coil displacement and significantly impact the audio system's performance. Traditional distortion measurements, such as intermodulation and harmonic distortion, have limitations and may not accurately reflect the transducer's nonlinear behavior or provide diagnostic information for improvements. Therefore, it is necessary to measure the position of the voice coil directly is crucial for ensuring the stability, maximum output, and low distortion of the audio system.

» Discover more about the challenges conventional distortion measurement faces in determining large signal parameters like voice coil offset and suspension system asymmetry, and explore methods for directly measuring the voice coil offset position.

Typical Endurance Test Applications - Accelerated Life Testing
The main goal is to simulate a typical load scenario for a full product life in a much shorter time. Alternating between intense high-level stimuli and essential cooling down phases, it simulates a lifetime of use in a fraction of the time. Such a test is also used to determine the long-term maximum sound pressure level according to IEC 60268-21. Read more about one of the measurement examples of our KLIPPEL Endurance Test (KET).

» Discover more and explore the capabilities of KLIPPEL Endurance Test on your own with our complimentary example data.

International Symposium on Electroacoustic Technologies (ISEAT)
Visit KLIPPEL at ISEAT, scheduled for November 2^nd-3^rd, 2024, in Shenzhen, China. In our presentation session at ISEAT, we will explore how you can measure the nonlinear, lossy, frequency-dependent voice coil inductance.

The voice coil in electrodynamic transducers converts electrical current into movements that create sound. However, the coil's self-inductance can cause issues, as it varies depending on the coil's position and is not constant. Furthermore, the inductance nonlinearity cannot be represented by a single static nonlinear function due to its frequency dependency. These effects lead to decreased voltage sensitivity and transducer efficiency, as well as nonlinear distortion and reduced robustness and maximum excursion. Additionally, we will address a much faster and novel technique to identify parameters for a nonlinear dynamic inductance model.

ISEAT Exibition
Our Chinese distributor PANA SOUND LTD will be exhibiting during the ISEAT next week. Take the opportunity to meet LingChen Zhu and his team and have a chat with our experts at booth C7 in Lotus Hall.