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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





Marantz SR 9000G (1982)


Specifications

Audio Section

Power output per channel:

180 W at 4 ohms DIN

145 W at 8 ohms DIN

165 W at 4 ohms RMS

130 W at 8 ohms RMS

Total Harmonic Distortion: 0.03% at 8 ohms RMS

Damping Factor: 70 ( 8 ohms, 1 kHz)

Frequency Response:

Phono (RIAA): 20 - 20,000 Hz, ±0,5 dB

Aux: 8 - 65,000 Hz , ±2 dB

Signal to Noise Ratio:

Phono: 85 dB (7,75 mV, 20 V output)

Aux: 98 dB ( vol. max., 20 V output)

Input Terminals:

Phono: 2,7 mV/47 kohms

Aux: 160 mV/20 kohms

FM Tuner Section

Frequency Range: 87,5 - 108 MHz

Usable Sensitivity:

DIN Mono (S/N 26 dB, 75 ohms): 0,85 μV

DIN Stereo (S/N 46 dB, 75 ohms): 19 μV

Alternate Channel Selectivity: 70 dB at 98 MHz

Signal to Noise Ratio at 98 MHz:

Unweighted Mono/Stereo: 75/67 dB

Weighted Mono /Stereo: 77/72 dB

MW Tuner Section

Frequency Range: 515 - 1650 kHz

Usable Sensitivity (20 dB, S/N 30% mod. 1 MHz): 10μV

Se;ectivity: 20 dB

General

Power Requirements: 110/120/220/240 V AC, 50/60 Hz

Power Consumption (at rated output, both channels operating): 560 W

Dimensions (W x H x D): 466 x 146 x 380 mm

Weight: 13 kg

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