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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 SL-PS 900

Features SL-PS 900

MASH 1-bit 8-DAC system achieves small signal fidelity for full musical detail.

Digital Servo System helps Improve playability.

Silent Loading Machanism. The swing arm drive system asures smooth, ultra quiet operation.

Independent power supply transformers for analog/digital sections.

Center disc tray design and full anti-resonance construction.

Optical digital output terminal.

Function Management System. Your can assing any of the 17 functions to keys F1 through F5.

CD editing functions: Edit Guide, Just Time Edit, Time Fade, Synchro Editing, Peak Level Search, Disc Link and Auto Space.

Wireless remote control with 20-key direct access.

Multi function FL display with music matrix.

Timer play function (play/off/random).


MASH multi-stage noise shaping

Technics' Innovative MASH 1-bit Digital-to-Analog Conventer.

To achieve ideal digital-to-analog conversion, Technics develloped the MASH 1-bit DAC. An improvement on conventional DAC's this advanced system uses high-order oversampling technology and noise shaping technology to theoretically eliminate non-linear distortion, thereby assuring accurate reproduction of minute signals.

All of Technics Cd players feature the MASH 1-bit DAC, and it is now the most widely used digital-to-analog conventer. 1-bit DAC is the general term for D/A conventers that output only two kinds of voltage, high and low . Because there are only two output voltages, even if there are changes in output voltage due to temperature changes and changes over time, DAC linearity is maintained. After the noise shaping circuitry stage, Technics employs superior PWM (Pulse Width Modulation) circuitry to achieve optimum 1-bit DAC performance.

SPECIFICATIONS

Model: SL-PS 900

Year: 1991-1992

Frequency Response: 2 - 20,000 Hz, +0.3

Dynamic range: 99 dB

S/N Ratio: 118 dB

Total Harmonic Distortion: 0,0022 dB at 1 kHz

Output voltage: 2,3 V at 0 dB

Wow and flutter: Below measurable limit

Output impedance: Approx. 1 kohm

Load Impedance: More than 10 kohm

Headphone output level: 15 mW max. 32 Ohms

Line Direct Level: Fixed

Pickupwavelenght: 780 nm

Decoding System Number of Bits - Oversamplng Rate: 1 - 4

Elapsed Time Display: From Start, From Track Start, Both

Remaining Time Display: To Disc End, To Track End, Both

Number of Programmable Selections: 20

Repeat Functions: Entire Disc, Track, A-B Phrase, Entire Program

Power consumption: 18 W

Power supply: 110 V,127 V, 220 - 240 V, 50/60 Hz

Dimensions: 430 x 130 x 333 mm (W x H x D)

Net Weight: 6,2 kg (15,0 lbs)

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