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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





Bose Model 802 loudspeaker

Model 802 Loudspeaker System
The Bose Model 802 represents the most significant advance in professional loudspeaker systems since Bose first introduced its revolutionary Model 800. incorporating a number of major departures from traditional loudspeaker design, the 800 series has since become the standard among professionals who demand systems which produce the cleanest, most natural sound.
The Model 802 utilizes a multiple array of matched, full-range drivers. Their close acoustical coupling results in a smoothing and broadening of individual driver resonances, producing an unusually transparent and detailed sound. The full-range driver concept also eliminates the need for a crossover, thereby eliminating crossover coloration and yielding a sound which has exceptional clarity and realism.
In each Model 802 enclosure, the eight drivers are mounted on four separate facets for smooth dispersion. Dual reactive air columns greatly increase the bass output, while lowering distortion by reducing cone excursion at low frequencies. A unique impedance control circuit, internal to the cabinet, lowers the high-frequency power requirements by reducing the slope of the impedance - versus - frequency curve.

Excellent transient response is achieved though the use of relatively light cones powered by massive magnetic structures. The smooth frequency response and excellent spatial properties of the multiple-driver design also permit performers to work very close to the speakers without causing feedback problems.
Each driver incorporates an edge-wound, aluminum ribbon voice coil for exceptional efficiency and power-handling capacity.efficiency is further enhanced though the use of a 12-ounce ceramic magnet and a reinforced polymer frame, which reduces magnetic flux leakage.
Matched equalization not incorporated into other professional loudspeaker systems, is tailored to the acoustics of the Model 802 and assures full frequency range performance. The new Model 802-E active equalizer provides extremely detailed equalization for smooth, wide response. Phone jacks and XLR connectors allow a choice of unbalanced or balanced inputs. The 802-E's output circuit will drive high-impedance or 600 Ω lines.

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