Introducing WT3

No other loudspeaker parameter measurement system is as fast or as easy to use as Dayton Audio’s WT3. WT3 employs powerful new DSP measurement techniques to provide highly accurate parameters in seconds. While previous generation woofer testers took around 6 minutes to measure 30 impedance points, the new WT3 measures over 30,000 data points in only a few seconds! Using a new swept sine technique that is only available in WT3 the system achieves very accurate, high resolution impedance measurements that allow the extraction of high quality driver parameters suitable for the most critical loudspeaker design work. WT3 is designed to measure impedances in the range from about 1 Ohm up to 5k Ohms; it operates over a frequency range from 1 Hz to 20k Hz. Within this range of operation, and with proper calibration, the accuracy of WT3's impedance measurements is typically within 1%.

The WT3 software is supplied on a CD. The software runs under Windows and provides an easy to use interface that allows users to be up and running quickly. When the software is launched it opens with an Untitled Project file. You can save as many as 20 impedance measurements per project and overlay any or all of the measurements to create a custom report. Your personal notes are included with each measurement. Operation of WT3 is very simple. Free air parameters are measured first, then V(as) can be measured by one of three methods:

•Test Box Method

•Added Mass Method

•Specified SPL Method

While the primary application for WT3 will be testing raw drivers in order to gather the speaker parameters required for speaker design, loudspeaker designers can also use WT3 as follows:

•Measure a Woofer's Parameters

•Measure a Tweeter's Parameters

•Measure a Resistor

•Measure an Inductor

•Evaluate a Closed Box Loudspeaker

•Evaluate a Vented Box Loudspeaker

•Evaluate a Complete Speaker System

•Diagnose Loudspeaker Fault Conditions

•Design a Zobel Network

The WT3 hardware consists of a compact USB interface unit with attached USB cable and alligator clip leads. A precision resistor (1k Ohm 1%) is included for calibrating the unit.

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Dayton manual Introducing WT3
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WT3 specifications

The Dayton WT3 is a sophisticated and highly regarded tool in the field of audio measurement and analysis, particularly known for its precision in loudspeaker testing. This comprehensive device integrates several advanced features and technologies, making it an essential choice for audio professionals, engineers, and hobbyists alike.

One of the standout characteristics of the Dayton WT3 is its dual-channel capability, allowing users to conduct simultaneous measurements of two different loudspeakers. This feature is particularly useful in stereo systems where matching drivers is essential. The WT3 utilizes a high-resolution analog-to-digital converter (ADC) that ensures accurate and detailed frequency response measurements, providing users with the data they need to refine and optimize their audio setups.

The WT3 is equipped with a user-friendly interface that simplifies the measurement process. Its software is intuitive and runs on Windows, which means that users can easily navigate through various options to configure tests and analyze results. The inclusion of a built-in microphone makes it possible to perform room acoustics measurements, further enhancing its versatility.

Another key technology integrated into the Dayton WT3 is its frequency sweep capability. By generating continuous sine wave sweeps across a wide frequency range, the WT3 can analyze the response of loudspeakers in real-time. This allows for identifying resonances, distortion, and other critical parameters that affect sound quality.

The WT3 also features a range of measurement modes, including impedance measurements, which can be invaluable for understanding how a loudspeaker behaves across different frequencies. This data is displayed in easy-to-read graphs and charts, facilitating a straightforward interpretation of results.

Moreover, the Dayton WT3 utilizes advanced signal processing algorithms that help in reducing noise and other unwanted artifacts that can skew measurements. The device's accurate phase response measurement capability further distinguishes it from competitors, providing essential data for crossover design and speaker alignment.

In summary, the Dayton WT3 combines advanced measurement technology with an intuitive user experience, making it an essential tool for those seeking precise loudspeaker performance insights. Its features and capabilities position it as a valuable asset for both professional audio engineers and enthusiasts dedicated to achieving the best possible sound quality. Whether for designing new speakers or optimizing existing setups, the WT3 delivers reliable performance and accuracy.
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