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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 SE-A1000 power amp

Stereo Power Amplifier

 


Specifications

Continuous Power Output (both channels driven)

From 20 Hz to 20 kHz :  2 x 70 W at 8 Ω 

At 1 kHz (T.H.D. 1%) :  2 x 85 W at 8 Ω ; 2 x 120 W at 4 Ω 

From 63 Hz to 12,5 kHz (T.H.D. 0,7%) :  2 x 80 W at 8 Ω  ; 2 x 105 W at 4 Ω

Total Harmonic Distortion (rated power at 20 Hz - 20 kHz):  0,01 at 8 Ω

Intermodulation Distortion (50 Hz : 7 kHz = 4 : 1 SMPTE):  0,007% at 8 Ω

Residual Hum and Noise:  0,3 mV

Damping Factor:  70 at 8 Ω ; 35 at 4 Ω 

Headphone Output Level/Impedance:  540 mV/330 Ω

Load Impedance

A or B, Bi Wiring :  4 - 16 Ω

A and B :  8 - 16 Ω

Input Sensitivity/Impedance:  1 V/33 k Ω

Signal-to-Noise Ratio (rated power at 4 Ω ):  95 dB (110 dB, IHF '66)

Frequency Response

Power Amp Direct :  5 Hz - 70 kHz (+0 -3 dB); 20 Hz - 20 kHz (+0 -0,5 dB)

Power Consumption:  280 W

Power Requirements:  AC 120 V, 220 - 240V 50/60 Hz

Dimensions (W x H x D):  430 x 136 x 344 mm (16-59/64" x 5-23/64" x 13-35/64")

Weight:  9,8 kg (21,6 lbs)

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