Onkyo is a Japanese audio equipment manufacturing company that specializes in home theater systems and audio receivers. They are known for their high-quality sound systems.

Onkyo

The Onkyo D-77 XX is a high-performance loudspeaker model produced between 1988 and 1989. This bookshelf speaker system is designed to deliver impactful audio through its advanced engineering and construction. It features a 3-way design with three speaker units: a 31 cm cone-type woofer for low frequencies, a 10 cm cone-type mid-range driver, and a 2.5 cm dome-type tweeter for high frequencies. The speaker is equipped with a bass reflex system that enhances its performance in low-frequency reproduction. The frequency response spans from 28 Hz to 45 kHz, providing a wide range of audible sound. With a crossover frequency set at 300 Hz and 2500 Hz, the D-77 XX effectively divides the audio signal among the respective drivers, ensuring clarity and depth in the soundstage. The maximum input power for the system is 200W, and it operates with an impedance of 6 ohms, making it compatible with a variety of audio amplifiers. The speaker boasts an impressive output sound pressure level of 91 dB/W/m, which indicates its efficiency in converting power to sound. The cabinet has an internal volume of 57 liters and dimensions of 380 mm in width, 670 mm in height, and 363 mm in depth. Weighing 34 kg, the construction enhances stability and reduces unwanted vibrations. The usage of advanced materials, including a diaphragm made of plasma-nitrided titanium for the tweeter and layered carbon fibers for the mid-range driver, contributes to the overall sound fidelity and durability of the system. The model was originally priced at approximately 1,400 DM per piece, indicating its premium positioning in the market during its time of manufacture.

D-77 X

by Onkyo

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