HiVi RT1C-A Planar Isodynamic Tweeter

The HiVi RT1C-A Isodynamic Planar Tweeter represents a significant step forward in high-frequency reproduction, offering a refined alternative to conventional dome tweeters. Engineered for discerning audio enthusiasts and custom speaker builders, this driver delivers exceptional clarity and airiness across the treble spectrum. Its planar design ensures low distortion and a remarkably fast transient response, making it an ideal choice for high-resolution audio systems, studio monitors, and bespoke two-way or multi-way loudspeaker projects where precise, uncoloured high frequencies are paramount.

At the heart of the RT1C-A lies a 9.9 × 52.1 mm planar diaphragm, which operates on the isodynamic principle to provide uniform driving force across its entire surface. This results in a controlled, wide dispersion pattern and a sensitivity of 94.5 dB (1m/2.83V), allowing for effortless integration with a variety of amplifiers. With a nominal impedance of 5 ohms and a DC resistance of 4.8 ohms, the tweeter is well-suited to modern crossover designs. A recommended crossover frequency of 3,500 Hz with a second-order slope ensures a seamless blend with midrange drivers. The compact chassis, measuring 119.9 mm overall with a cut-out of 76.2 mm × 92.1 mm, facilitates straightforward installation. Whether upgrading existing speakers or building from scratch, the HiVi RT1C-A brings a level of refinement and transparency that elevates any listening experience.