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

Teac EQA-220

10-band spectrum analyzer display
10-band equalization
±12 dB adjustable range

Number of Channels:  2
Number of Bands:  10
Center Frequencies:  30, 60, 125, 250, 500, 1k,2k, 4k, 8k, 16 kHz
Boost/Cut Range:  ±12 dB
Inputs Nominal Level/Impedance:  0,3 V/47 k Ω
Outputs Max. Level/Impedance:  6,0 V/1 k Ω
Frequency Response:  10 - 100,000 Hz ±1 dB
Total Harmonic Distortion:  0,01%
Signal-to-Noise Ratio (IHF-A weighted):  90 dB
Dimensions (W x H x D):  435 x 83 x 213 mm
Weight:  2,7 kg

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