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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





Technics SB-T20 speakers


There are two major categories of speaker design - bookshelf speakers and floor standing speakers. Floor standing models generally provide deeper bass, because the floor itself augmentes the output of the driver. In addition, the increased volume of the speaker box means more air in the enclosure and, consequently, greater compliance. Compliance is an expression of the amount of energy required to move the woofer; in floor standing models, it is quite high and more bass energy is produced. Floor standing speakers also tend to improve high frequency response, because they are usually designed with the tweeter at eye level. This localized tweeter placement, while nothing more than a basic construction technique, dramatically improves the frequency balance in the high range.
If all these advantages are inherent in floor standing speakers, why do speaker manufacturers bother to build bookshelf models? Mostly, for practical reasons - size, space, price and convenience are the most important consideratiions. Bookshelf speakers, as the name implies, can be placed on a shelf. They can also be placed on the floor of course, but for quality reproduction, the added expense of a speaker stand is normally necessary. Bookshelf spaekers are usually smaller than the floor standing variety, less expensive, and much easier to handle. In short, for many listeners, the sonic advantages of floor standing speakers are not worth the added hassle and inconvenience.

The new technics SB-T20 speakers offer the best of both worlds. They are floor standing speakers, but in a sleek, trimmed down package. And their prices are in line with equivalent bookshelf models. With the additional enclosure volume and ear-level high frequency drivers, they deliver sound which is on a par with fine floor standing models. Yet, their futuristic, pillar-like design takes up less space in your listening room or your dance floor. Plus, they are lightweight and easily movable. Technics reputation for innovative design can only be enhanced by our new SB-T20 bass reflex speakers.

Specifications
Configuration Type:  2-way, 2-speaker bass-reflex
Driver Units:
Woofer 180 mm (7") honeycomb disc
Tweeter 28 mm (1-1/8") honeycomb disc
Impedance:  8 Ω
Input Power:  60 W music ( 40 W DIN)
Output Level:  90 dB/W/1m
Frequency Response:  38 Hz - 38 kHz (at 16 dB below average level)
45 Hz - 35 kHz (at 10 dB below average level)
Crossover Frequency:  3,000 Hz
Dimensions (W x H x D):  230 x 755 x 255 mm (9-1/16" x 29-23/32" x 8-27/32")
Weight:  9,5 kg (20,9 lbs)

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