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

Klipsch La Scala

 Theatre and Commercial System - designed for theatre use, La Scala is a wide-range loudspeaker, adaptable for custom installation or as a portable unit for professional musicians.
La Scala may be used in a corner or along a wall. It is a full 3-way horn system of the most compact size currently available, yet is in no way a compromise of sound quality.
La Scala employs the same drive components as the Klipschorn. The midrange horn is slightly smaller than that of the Klipschorn and teh woofer is shorter and is folded into two paths instead of three as in the Klipschorn.
 Only Klipsch speakers and Klipsch 3-speaker master stereo system meet the 8 cardinal points of reperoduction:
1.Freedom from distrortion. Minimum distortion requires small amplitudes of air mass movements, even at peak transisnt power output. Bass diaphragm motion should not eceed 1/16 inch. Corner placement reduces distortion three fourths.
2.Optimium size of speaker. Large enough to reproduce the lowest audible bass tone at peak transient power output without distortion; not so large as to produce a separation of bass and treble events. Corner placement increases effective size of speaker 4 times.
3.Freedom from rattles.
4.Freedom from shadows. Obstructions between high frequency speaker and listeners can not be tolerated - treble wave-lengths do not turn corners. 
 5.Freedom from cavities. The space under a speaker box formed by mounting it on legs can destroy the bottom octave of response and deteriorate the next 2 octaves.
6.Adequate spacing for stereo. In a 14 x 17 foot room, for example, the 17-foot wall is apt to be best for the stereo speaker array.
7.Accurate spatial values. Ability to localize the virtual sound sources in their original spatial relationships requires 3 widely spaced speakers, regardless of size or type, retention of this quality over a wide listening area requires toe-in of the flanking speakers.
8.Flanking speakers toed-in. Such toe-in is naturally provided by corner speakers. The effect is to reduce shift of the virtual sound source for different listener locations. This is the only way to achieve a wide area for listening. 
Frequency Response:  42 Hz - 17,000 Hz ±5 dB (measured indoors)
Total Modulation Distortion:  3,0% max. at 110 dB at 3 m.
Sound Pressure Level:  96 dB SPl at 1 watt input
Acoustic Power Output (maximum):
Low-frequency :  15 acoustic watts (150 Hz)
Mid-frequency :  5 acoustic watts (1,000 Hz)
High-frequency : 0,4 acoustic watt (8,000 Hz)
Electrical Power Input (maximum continuous):
Broadband Program :  200 watts
Nominal Average Beamwidth:  100° Horizontal; 54° Vertical
Drive Components:
Woofer :  One Klipsch 15" K-43 Low-frequency Driver
Midrange :  One Klipsch 0,7" K-55 (K-400 Horn)
Tweeter :  One Klipsch K-77 Horn Tweeter
Crossover:  the type AA Crossover Networkbalances the system response.
Nominal Crossover Frequencies :  400 Hz and 6 kHz
Woofer :  6 dB/octave rolloff above 400 Hz
Midrange :  6 dB/octave rolloff below 400 Hz and 3 dB attenuation provided by voltage transformation
Tweeter:  18 dB octave rolloff below 6 kHz with zener diode protection.
Impedance Minimum/Nominal:  4,9 ohms at 90 Hz / 8 ohms
Dimensions (W x H x D):  603 x 900 x 622  (23-3/4" x 35-1/4" x 24-1/2")

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