These audio devices represent a bipolar speaker design produced by Definitive Technology. This configuration employs both front- and rear-firing drivers to create a spacious and immersive sound field. Historically, such speaker designs were intended to more closely replicate the acoustic characteristics of live music performances within a listening environment.
The benefits of this design include an expanded soundstage and a greater sense of ambiance compared to traditional direct-radiating speakers. The broader dispersion pattern can contribute to a more enveloping listening experience. These speakers were often favored for home theater setups due to their ability to create a more realistic and engaging surround sound effect.