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Sony SQD-2020 SQ Decoder
Sony SQD-2020 SQ
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Posted On
22.04.2025
Last Update On
22.04.2025
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German
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Sony SQD-2020 SQ decoder in collector's condition, technically and visually fantastically preserved! Further information (without guarantee): The Sony SQD-2020 is a quadrophonic decoder manufactured by Sony between 1972 and 1976. It is designed to support the Stereo Quadraphonie (SQ) system developed by CBS. This system made it possible to play back four-channel audio recordings through traditional stereo systems by encoding and decoding the channels in a matrix.The SQD-2020 was one of the first advanced SQ decoders on the market and featured a so-called "Waveform Comparator Circuitry" that helped minimize crosstalk between channels. It offered various operating modes, including SQ, Regular Matrix, and Discrete Modes, and was equipped with four illuminated VU meters as well as independent volume controls for each channel. Sony SQD-2020 specifications:Circuit system: SQ decoder with front-back and waveform comparator logic circuits, regular matrix decoderSemiconductors: 69 transistors, 84 diodesFrequency response: 20 Hz to 20 kHzInput sensitivity/impedance:Front preamp: 250 mV/100 kΩ2-channel tape: 750 mV/100 kΩ4-channel tape: 750 mV/100 kΩDiscrete: 250 mV/100 kΩOutput level/impedance:Front preamp output: 500 mV/5 kΩHigh Output: 2 V/5 kΩLow Output: 500 mV/5 kΩ2-channel Rec Out: 250 mV/5 kΩ4-channel Rec Out: 250 mV/5 kΩRec/PB Output: 30 mV/82 kΩSignal-to-Noise Ratio: greater than 80 dB (A-weighted network)SQ Isolation (Input 250 mV, 2 kHz):Lf-RF: 20 dB or more Lb-Rb: 14 dB or moreLf-Lb: 20 dB or moreRf-Rb: 20 dB or moreLf-Rb: 20 dB or moreRf-Lb: 20 dB or moreCf-Cb: 15 dB or moreTHD (input 250 mV, 2 kHz): less than 0.1% per channelDimensions (W x H x D): 400 x 149 x 327 mmWeight: 5.9 kgPower supply: AC 120V, 100V, 127V, 220V, 240V, 50/60 Hz with voltage selectorPower consumption: 15 W
Sony SQD-2020 SQ Decoder im Sammlerzustand, technisch als auch visuell fantastisch erhalten! Weiterführende Informationen (ohne Gewähr): Der Sony SQD-2020 ist ein Quadrophonie-Decoder, der von Sony zwischen 1972 und 1976 hergestellt wurde. Er wurde entwickelt, um das Stereo-Quadraphonie (SQ)-System zu unterstützen, das von CBS entwickelt wurde. Dieses System ermöglichte es, vierkanalige Audioaufnahmen über herkömmliche Stereoanlagen wiederzugeben, indem es die Kanäle in einer Matrix kodierte und dekodierte.Der SQD-2020 war einer der ersten fortschrittlichen SQ-Decoder auf dem Markt und verfügte über eine sogenannte “Waveform Comparator Circuitry”, die dazu beitrug, das Übersprechen zwischen den Kanälen zu minimieren. Er bot verschiedene Betriebsmodi, darunter SQ, Regular Matrix und Discrete Modes, und war mit vier beleuchteten VU-Metern sowie unabhängigen Lautstärkereglern für jeden Kanal ausgestattet. Technischen Daten des Sony SQD-2020:Schaltungssystem: SQ-Decoder mit Front-Back- und Waveform-Comparator-Logikschaltungen, Regular-Matrix-DecoderHalbleiter: 69 Transistoren, 84 DiodenFrequenzgang: 20 Hz bis 20 kHzEingangsempfindlichkeit/Impedanz:Front Preamp: 250 mV/100 kΩ2-Kanal-Tape: 750 mV/100 kΩ4-Kanal-Tape: 750 mV/100 kΩDiscrete: 250 mV/100 kΩAusgangspegel/Impedanz:Front Preamp Output: 500 mV/5 kΩHigh Output: 2 V/5 kΩLow Output: 500 mV/5 kΩ2-Kanal-Rec Out: 250 mV/5 kΩ4-Kanal-Rec Out: 250 mV/5 kΩRec/PB Output: 30 mV/82 kΩSignal-Rausch-Verhältnis: größer als 80 dB (A-gewichtetes Netzwerk)SQ-Trennung (Eingang 250 mV, 2 kHz):Lf-Rf: 20 dB oder mehrLb-Rb: 14 dB oder mehrLf-Lb: 20 dB oder mehrRf-Rb: 20 dB oder mehrLf-Rb: 20 dB oder mehrRf-Lb: 20 dB oder mehrCf-Cb: 15 dB oder mehrKlirrfaktor (Eingang 250 mV, 2 kHz): weniger als 0,1 % pro KanalAbmessungen (B x H x T): 400 x 149 x 327 mmGewicht: 5,9 kgStromversorgung: Wechselstrom (AC) 120V, 100V, 127V, 220V, 240V, 50/60 Hz mit SpannungswählerLeistungsaufnahme: 15 W
Decodificador Sony SQD-2020 SQ en estado de coleccionista, técnica y visualmente fantásticamente conservado! Más información (sin garantía): El Sony SQD-2020 es un decodificador cuadrofónico fabricado por Sony entre 1972 y 1976. Está diseñado para soportar el sistema Stereo Quadraphonie (SQ) desarrollado por CBS. Este sistema permitía reproducir grabaciones de audio de cuatro canales a través de sistemas estéreo tradicionales codificando y decodificando los canales en una matriz.El SQD-2020 fue uno de los primeros decodificadores SQ avanzados del mercado y contaba con los llamados "circuitos comparadores de forma de onda" que ayudaban a minimizar la diafonía entre canales. Ofrecía varios modos de funcionamiento, incluyendo SQ, Regular Matrix y Discretos, y estaba equipado con cuatro medidores VU iluminados, así como controles de volumen independientes para cada canal. Especificaciones de Sony SQD-2020:Sistema de circuitos: Decodificador SQ con circuitos lógicos frontal-trasero y comparador de forma de onda, decodificador de matriz regularSemiconductores: 69 transistores, 84 diodosRespuesta de frecuencia: 20 Hz a 20 kHzSensibilidad/impedancia de entrada:Preamplificador frontal: 250 mV/100 kΩCinta de 2 canales: 750 mV/100 kΩCinta de 4 canales: 750 mV/100 kΩDiscreta: 250 mV/100 kΩNivel/impedancia de salida:Salida del preamplificador frontal: 500 mV/5 kΩAlto rendimiento: 2 V/5 kΩSalida baja: 500 mV/5 kΩSalida Rec de 2 canales: 250 mV/5 kΩSalida Rec de 4 canales: 250 mV/5 kΩSalida Rec/PB: 30 mV/82 kΩRelación señal-ruido: superior a 80 dB (red ponderada A)Aislamiento SQ (Entrada 250 mV, 2 kHz):Lf-RF: 20 dB o más Lb-Rb: 14 dB o másLf-Lb: 20 dB o másRf-Rb: 20 dB o másLf-Rb: 20 dB o másRf-Lb: 20 dB o másCf-Cb: 15 dB o másTHD (entrada 250 mV, 2 kHz): menos del 0,1% por canalDimensiones (ancho x alto x profundidad): 400 x 149 x 327 mmPeso: 5,9 kg Fuente dealimentación: CA 120 V, 100 V, 127 V, 220 V, 240 V, 50/60 Hz con selector de voltajeConsumo de energía: 15 W
Sony SQD-2020 SQ kod çözücü, koleksiyoncu durumunda, teknik ve görsel olarak fevkalade korunmuş! Daha fazla bilgi (garanti edilmez): Sony SQD-2020, Sony tarafından 1972 ve 1976 yılları arasında üretilen bir quadrophonic kod çözücüdür. CBS tarafından geliştirilen Stereo Quadraphonie (SQ) sistemini desteklemek için tasarlanmıştır. Bu sistem, kanalları bir matriste kodlayarak ve kodunu çözerek geleneksel stereo sistemler aracılığıyla dört kanallı ses kayıtlarının oynatılmasını mümkün kıldı.SQD-2020, piyasadaki ilk gelişmiş SQ kod çözücülerinden biriydi ve kanallar arasındaki karışmayı en aza indirmeye yardımcı olan "Dalga Biçimi Karşılaştırıcı Devresi" adlı bir özelliğe sahipti. SQ, Normal Matris ve Ayrık Modlar dahil olmak üzere çeşitli çalışma modları sundu ve dört aydınlatmalı VU ölçerin yanı sıra her kanal için bağımsız ses kontrolleri ile donatıldı. Sony SQD-2020 özellikleri: Devre sistemi: Ön-arka ve dalga formu karşılaştırıcı mantık devrelerine sahip SQ kod çözücü, normal matris kod çözücüYarı iletkenler: 69 transistör, 84 diyotFrekans yanıtı: 20 Hz - 20 kHzGiriş hassasiyeti/empedansı: Ön preamp: 250 mV/100 kΩ2 kanallı bant: 750 mV/100 kΩ4 kanallı bant: 750 mV/100 kΩAyrık: 250 mV/100 kΩÇıkış seviyesi/empedans:Ön preamp çıkışı: 500 mV/5 kΩYüksek Çıkış: 2 V/5 kΩDüşük Çıkış: 500 mV/5 kΩ2 kanallı Kayıt Çıkışı: 250 mV/5 kΩ4 kanallı Kayıt Çıkışı: 250 mV/5 kΩKayıt / PB Çıkışı: 30 mV/82 kΩSinyal-Gürültü Oranı: 80 dB'den büyük (A ağırlıklı ağ)SQ İzolasyonu (Giriş 250 mV, 2 kHz):Lf-RF: 20 dB veya daha fazla Lb-Rb: 14 dB veya daha fazlaLf-Lb: 20 dB veya daha fazlaRf-Rb: 20 dB veya daha fazlaLf-Rb: 20 dB veya daha fazlaRf-Lb: 20 dB veya daha fazlaCf-Cb: 15 dB veya daha fazlaTHD (giriş 250 mV, 2 kHz): kanal başına %0,1'den azBoyutlar (G x Y x D): 400 x 149 x 327 mmAğırlık: 5.9 kgGüç kaynağı: AC 120V, 100V, 127V, 220V, 240V, 50/60 Hz voltaj seçici ileGüç tüketimi: 15 W
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