DAYTON AUDIO DATS LA Speaker Testing System

Dayton Audio DATS LA: Test based on direct current

Traditional impedance-based test methods provide valuable information about the small-signal characteristics of a loudspeaker, but fail to capture how parameters change with diaphragm displacement. The DATS LA introduces a unique approach to this problem with its patented DC-based measurement technique, allowing accurate assessment of a loudspeaker's non-linear electromechanical behaviour as a function of excursion.

By using precisely controlled DC pulses to move the voice coil and cone before performing impedance sweeps, DATS LA systematically captures the impact of excursion on key parameters. The result is highly accurate Bl(x) and Kms(x) curves, which illustrate the symmetry of the system and suspension over the entire operating range of the loudspeaker. By identifying non-linearities, mechanical limitations and asymmetry, engineers can optimise loudspeaker structures, suspension designs and excursion limits with unparalleled precision.

Dayton Audio DATS LA: Precision measurements

The DATS LA is a high-precision impedance measurement system that uses advanced algorithms to extract key Thiele/Small parameters (Fs, Qts, Vas, etc.) with extreme accuracy. In addition, it functions as a high-precision LCR meter, enabling accurate measurement of :

• Resistance (Re) : 0.002Ω - 10kΩ
• Inductance (L) : 0,05mH - 100mH (with DC resistance)
• Capacitance (C) : 0,002µF - 10 000µF (with ESR, dissipation factor and Q)

This level of precision is essential not only for evaluating loudspeaker components, but also for designing crossovers, passive networks and other precision circuits used in audio applications.