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What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Yamaha YH-1000 (1978)

These headphones feature Yamaha's exclusive Orthodynamic Design, a concept radically different from conventional dynamic or electrostatic types. Instead of an ordinary voice coil and diaphragm, it uses an ultra thin, low mass, polyester film diaphragm, sandwiched by a pair of powerful disc magnets. The voice coils are photo-etched on the surface of the diaphragm. The performance that results is marked by smooth, even response over the entire audible frequency range, low distortion, and clear imaging. The YH-1000 is a delight to wear, also: the earcups use a supra-aural design which eliminates listening fatique, and height and tilt adjustment ensure comfort over long hours of use.
"YH-1000 ia an orthodynamic headphones which has emerged as a fruition of Yamaha's unique technology of acoustic equipment development. YH-1000 is provided with a capacity of distortion-free broad band reproduction from heavy low sound to ultra high band which is characteristic of a horizontal drive system. YH-1000 also incorporates a rare earth element magnet which generates strong flux and an aluminium diecast housing which eliminates unnecessary vibrations. These features contribute to the production of powerful yet clear sound. YH-1000 is the outcome of our quest to provide comfortable feeling of fitness to your ears and ease in use, which we hope you will find satisfactory".

Specifications
Type: Orthodynamic
Diaphragm
diameter: 50 mm
Film diaphragm: 12 µm polyester
Coil diaphragm: 9 µm copper foil
Magnet: Cerium series cobalt
Frequency
response: 20 - 20,000 Hz
Sensitivity: 103 dB/1m/1W
Impedance: 100 Ω
Rated input: 3 W
Max. instant.
Input: 10 W
Total Harmonic
Distortion: 0,3% or less at 90 dB SPL
Weight: 500 g (1 lb 2 oz)

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