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





Audio-Technica ATH7 headphones


Whether the requirement is for critical monitoring of professional recording sessions or finest quality home reproduction, the ATH-7 will meet your most stringent standards for quality. Listening reveals the excellence of the ATH-7 . The precise electret elements respond uniformly to the entire audible range.. Superb transient response results from a moving diaphragm just 5 microns (or 0,0002") thick. The bipolar construction eliminates old-fashioned, bulky ear cups, and the light touch of the ATH-7 spells comfort even for an estended session of concentrated listening. The soft suede-finish headband distributes the light 7-1/2 oz. weight so that it is hardly noticed.

The handsome impedance-matching adapter connect easily between the amplifier or receiver and your speakers with a switch to select either speaker or stereophone listening. A green LED indicator flashes on normal program, while a red LED signals high-level peaks and warns of possible overloads. Specially engineered cables and connectors insure the utmost reliability.

For the ultimate in personal listening, the ATH-7 with its smooth, uncolored, wide-range response is a worthy addition to the very finest high fidelity systems.

Specifications:
Type:  Electret Condenser, Monopolar
Sensitivity (at 1 kHz, 0 dB - 0,0002 Bar):  98 ±1db
Harmonic Distortion (at 110 dB SPL):  0,3%
Frequency Range:  10 - 25,000 Hz
Matching Impedance:  4 - 32 ohms
Max. Input Power (at 500 Hz/minute):  5 watts
Diaphragm:  FEP 5 M film. 45 High compliance, low mass
Cord:  2,5 meter lenghth with 4-pole special plug
Weight:  275 grams with cord (210 g without cord)
Ear Cushions;  porous vinyl leather
Color:  Mat finished. Brown and Black

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