Onkyo D-5 (1981) | Pure, Natural, and Expressive Sound

 

Just as musical styles evolve, so do the trends in sound reproduction. Onkyo’s approach to speaker design has always focused on natural expressiveness—creating sound that stays true to the original recording without coloration or distortion. A speaker’s true character depends on the quality of its diaphragm, and Onkyo has achieved remarkable purity with its innovative Delta Olefin diaphragm. Unlike conventional materials, Delta Olefin offers minimal resonance and fast decay characteristics, delivering smooth, accurate sound reproduction across all frequencies. In technical terms, it provides a low Q factor and quick transient response—but from a musical perspective, it means the speaker “breathes” naturally, resonating only with the music itself. The result is a clear, detailed, and emotionally engaging sound that faithfully reflects every nuance of the performance. This advanced three-way speaker system showcases Onkyo’s commitment to high-fidelity engineering:

Low frequencies: 28 cm cone-type woofer with a Delta Olefin diaphragm and dust cap. Equipped with a four-layer voice coil and Capton bobbin for improved power handling and precise bass control.

Midrange: 10 cm cone driver, also crafted from Delta Olefin, housed in a dedicated 1-liter sealed enclosure to eliminate interference and ensure pure midrange reproduction.

High frequencies: 2.5 cm soft-dome tweeter made from specially developed chemical fibers with uniform thickness, achieving up to 2–3 dB higher efficiency than conventional designs.

Fine-tuning: Independent level controls for both midrange and high frequencies allow personalized sound adjustment.

The result is the distinctive “Delta Olefin Sound”—a long-awaited breakthrough that meets the demands of  discerning music enthusiasts. With exceptional clarity, natural tonality, and sensitivity to every genre, this Onkyo loudspeaker stands at the forefront of modern high-fidelity audio. Maximum power: 120W | Frequency range: 33-30.000Hz | Impedance 6ohm | Size: 350x630x325mm (W/H/D) | Weight: 16,5kg

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