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Tuned Dipolar Array® (TDA)
Since LF sound waves are so large (e.g. 22.6ft / 6.9 m at 50 Hz) controlling dispersion in this frequency range can be a difficult task. This is especially true for arrays, clusters, and in dedicated LF systems. To effectively monitor LF dispersion in the MQTD Series, EAW incorporates a variation of Tuned Dipolar Array® (TDA) for beneficial cancellation.
The sophistication of TDA technology rests in its ability to be effective only in the range where it is contributive. Before lobing becomes problematic, the technology becomes inactive. Because this approach limits the bandwidth to a small operating range for LF drivers, our TDA variation includes two pairs of drivers. The outer pair is spaced further apart and operates at a lower frequency range while the inner pair is used over a higher frequency range. When a properly designed crossover occurs between the two pairs, the system demonstrates desirable and consistent off-axis rejection over the entire LF frequency band.
Dipolar Array
Unlike Tuned Dipolar Array (TDA) Technology, which caters specifically to the LF components in large arrays, Dipolar Array Technology solves LF dispersion problems for stand-alone, full-range loudspeakers. To keep the enclosures manageable in size, the system employs a single pair of LF transducers mounted on angled baffles behind the HF driver. Directly above this setup is a midrange horn. Such a design can be contained in an enclosure just 36 inches tall.
Products that utilize this technology:
MQTD Series
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