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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





Koss CM-1020 loudspeakers


Utilizing the Koss Theory of loudspeaker design and its computerized program, Koss engineers set out to design the optimum 3 bandpass loudspeaker. The result is a system that stands alone in delivering a high energy broadband response, a low distortion product, and a high efficiency level. The CM/1020 utilizes a dual port design to achieve proper cabinet tuning and greater structural stability. The specially-designed 10-inch woofer provides both a 3 dB gain in electrical efficiency as well as a flat response over the low bandpass. The 4½ inch midrange driver and 1-inch dome tweeter capture all the realism of your music without distortion. And to unite all these outstanding elements, Koss utilizes a unique, seamless crossover network. But no description can match the thrill of hearing the CM/1020 in a live demonstration.

Specifications
Bandpass Response (to typify the normal listening room situation):
Low Frequency ;  3 dB down point 31 Hz
High Frequency :  3 dB down point 18,5 kHz
Overall System Response :  6 dB down point 27,5 Hz to 19 kHz
Polar Response:  -3 dB (at 8 kHz);  -6 dB (at 10 kHz)
Intermodulation Distortion Products:  less than 1,5%
Reference Sensitivity:  93 dB SPL
Recommended Amplified Power Rating (8 ohm):  15 watts/channel (minimum); 150 watts/channel (maximum)
Impedance:  5 Ω (nominal), 4 Ω (minimum)
Input Power Overload Protection:  Fused 3 AG 2½ A
Dimensions (W x D x H):  15-1/2" x 13-3/4" x 33"
Weight:  60 lbs

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