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Sansui QSD-1

Four Channel Synthesizer Decoder (1975-76)

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Sansui QSD-1

Description

The Sansui QSD-1 features the latest QS technological advances, making it possible to recreate concert hall realism with natural and vivid musicality. The QS System itself is a 4 channel regular matrix system, completed by application of Sansui's state of the art audio and electrical techniques and know how.

QS has been reviewed critically by professionals, engineers and audio seminar members around the world. They have judged it to be a remarkable 4 channel advancement, providing excellent 4 channel sound field reproduction of music.

At present, many FM broadcasting and record and tape recording studios around the world are actively using the QS System in the form of professional QS encoder / decoder equipment for encoding 4 channel material into a 2 channel medium (FM multiplex broadcasts and QS encoded records) which, when played by users through QS decoders, yield excellent 4 channel sound with authentic high fidelity results.

Among the professional features of the QSD-1 is its readiness for rack mounting: its front-panel is 480mm wide and thus can easily be incorporated into a record / playback system in any professional studio for reliable monitoring purposes.

Specifications

Frequency response: 20 to 30,000Hz

Distortion: less than 0.1%

Channels separation: 20dB (adjacent channels), 30dB (diagonal channels)

Input sensitivity: 100mV (2 channel), 140mV (4 channel)

Output level: 300mV

Semiconductors: 35 x transistors, 16 x diodes, 1 x zener diode, 12 x IC, 1 x LED

Dimensions: 482 x 88.5 x 304mm

Weight: 6.6kg

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