Search this site

Labels

4-channel ACCUPHASE ACOUSTIC ENERGY ADC ADCOM ADS ADVENT AIFAI AIWA AKAI AKG ALIANTE ALLISON ALTEC LANSING AMPEX AMPLIFON ANCIENT AUDIO AR ARCAM ARISTON ARMONIA AUDIA AUDIO ACADEMY AUDIO ANALOGUE AUDIO DYNAMICS AUDIO INNOVATIONS AUDIO NOTE AUDIO RESEARCH AUDIO-TECHNICA AUDIOLAB AUGUSTA AVALON AVID AXIOM Alchemist Audiostatic B-I-C BASF BASSOCONTINUO BEVERIDGE BEYER-DYNAMIC BOSE BOSTON BOWERS-WILKINS BOZAK BRAUN BRIONVEGA BSR Bang & Olufsen Bell Belt-Drive CAMBRIDGE CANTON CARVER CASTLE CD Player CD Transport CEC CELESTION CEMARK CERWIN-VEGA CHARIO CHARTWELL CIZEK CLARION CONRAD-JOHNSON COPLAND CORAL CORAL ELECTRONIC CREEK CROWN CYBERNET CYRUS California Audio Labs Centrex DAC DAHLQUIST DALI DAT DBX DECIBEL DENON DIAPASON DOKORDER DOMA DUAL DYNACO DYNAUDIO DYNAVECTOR Ditton EISA ELAC ELECTRO-VOICE EMPIRE EMT EPI EPICURE EPOS ES Series ESB ESOTERIC ESS EUMIG Esotec FAIRCHILD FOSTEX GALACTRON GALE GARRARD GENELEC GENESIS GIUSSANI RESEARCH GOLDENOTE GOODMANS GRAAF GRUNDIG H.H. SCOTT HAFLER HARBETH HARMAN/KARDON HEATHKIT HECO HIRTEL HITACHI HPM INDIANA LINE INFINITY JAMO JANSZEN JBL JEFF ROWLAND JENSEN JMLAB JVC KEF KENWOOD KLH KLIPSCH KOSS KRELL KYOCERA LAE LEAK LECTOR LENCO LESA LINN LOWTHER LUXMAN LYNGDORF Lafayette MAGNEPLANAR MARANTZ MARK LEVINSON MARTEL MARTINLOGAN MARUNI MASH MAXELL MBL MERIDIAN MERITON MICRO SEIKI MICRO-ACOUSTICS MIRAGE MISSION MITSUBISHI MONITOR AUDIO MONRIO MORDAUNT-SHORT MUSICAL FIDELITY MYRYAD McIntosh McLAREN NAD NAGRA NAKAMICHI NHT NIKKO NORESCO NOVA ONKYO OPERA OPTONICA ORTOFON PANASONIC PARADIGM PATHOS PEARL PHASE LINEAR PHILIPS PICKERING POLK AUDIO PSB Power-amplifier Pre-amplifier Pre-phono Pro-Ject QUAD RADFORD RCF REK-O-KUT REVOX ROGERS ROKSAN ROTEL ROYD RUARK Reel to Reel SACD SAE SANYO SENNHEISER SHARP SHERWOOD SHURE SIARE SIGNET SME SOMA SONAB SONUS FABER SONY SOTA SPECTRAL STANTON STAX STILE ITALIANO STRUSS SUGDEN SUPERSCOPE Soundcraftsmen Spica Stereo 8 Synthesis TAC TAD TAMON TANDBERG TANNOY TASCAM TDK TDL TEAC TECHNICS THE FISHER THIEL THORENS TOSHIBA TRANSCRIPTOR TRIO ULIX UNISON RESEARCH UREI UTAH Uni-Q VANDERSTEEN VOCE DIVINA VPI WADIA WHARFEDALE XAVIAN YAMAHA ZENITH ZINGALI amplifier cartridge direct-drive headphones idler italian lathe linear loudspeaker pioneer quadraphonic receiver sansui tangential tonearm tuner turntable unitra

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 YHD-2

  Each of Yamaha's exciting new headphones has been designed to offer an optimum blend of high-fidelity music reproduction, sonic efficiency, and extended fatigue-free music enjoyment. The most immediately striking aspect of the YHD-2 natural Sound Stereo headphones is the sophisticated new design by Mario Bellini, a world-famous designer highly appraised for his ergonomic "human-engineering" approach to styling. Bellini's new design enables the YHD-1  and YHD-2 to be worn for hours on end without a trace of fatigue. Yet the deeply detailed musical transients and exciting sound dynamics are both products of Yamaha's exclusive Orthodynamic design.  These headphones are also remarkably efficient, meaning that they deliver generous levels of sound output with astonishingly low levels of distortion from comparatively low input levels. When used with portable headphone stereo players with minimal output levels, they deliver truly larger than life performance.
How Yamaha's Orthodynamic Design creates better sound.
Despite widely differing acoustic conditions for headphone sound reproduction, most headphone designs just use loudspeaker-type drivers that have been scaled down for headphone use. Yamaha took a completely different approach, designing the entire headphone driver unit from scratch. The result was our orthodynamic design. It consists of two sintered ferrite magnets with a combination voice coil/diaphragm sandwiched in between. The YHD-2 uses isotropic type-magnets,  for even sharper response and higher efficiency.

Magnetic Flux and the Voice Coil / Diaphragm.
The disc-shaped driver magnets are actually sets of distinct magnets, coaxially arranged with each successive one in opposite polarity. In between, there is a combination voice coil/diaphragm constructed of super-thin lighweight polyester film only 6 µm thick, corrugated in the direction of movement for optimum compliance. It's fixed only at the outside edge for maximum freedom of movement. This diaphragm is printed with aluminum voice coils wound in opposite direction, so that the diaphragm 'breathes" back and forth in precise response to the music signal. Openings in both the disc driver magnets and the driver body permit the air flow necessary for unimpeded diaphragm movement for strong bass response, while felt and urethane foam damping materials provide optimum load to the diaphragm for natural sound response over the entire audible spectrum.

Your ears will tell you what the specs confirm.
Both of these headphones deliver extremely well balanced response across the entire audio spectrum - 20 Hz all the way up to 20,000 Hz. The output sound pressure level, which is the amount of sound produced for the power input, is a remarkable 97 dB/mW for the YHD-2, and a spectacular 100 dB/mW for the YHD-1. performance this efficient enables you to enjoy genuine Yamaha naturas Sound fidelity even with today's popular portable headphone stereo players. Indoors or out, you'll never be without the finest sound quality ever possible from a headphone.
 Specifications  YHD-2
Impedance:  125 Ω
Magnet Diameter:  ø38 mm (1 ½")
Magnet Material:  Isotropic Ferrite
Diaphragm Diameter:  ø38 mm (1 ½")
Diaphragm Film:  6 µm Polyester
Frequency response:  20 - 20,000 Hz
Output SPL:  97 dB/mW (106 dB/V)
Rated Input:  0,7 W
Cord:  2,4 m (8 ft.) straight
Weight [cord/without cord]:  155 g (5,6 oz) / 133 g (4,7 oz)

No comments:

Post a Comment