Natural Sound Active Servo Processing Amplifier AST-A10

Yamaha Co.; Hamamatsu

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  • Year
  • 1989/1990
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 201750
    • alternative name: Nippon Gakki

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 140 W (200 W max.)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Natural Sound Active Servo Processing Amplifier AST-A10 - Yamaha Co.; Hamamatsu
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 435 x 96 x 372 mm / 17.1 x 3.8 x 14.6 inch
  • Notes

  • The AST-A10 is designed as a stereo power amplifier specifically for use with Yamaha Active Servo Processing speakers such as the Yamaha AST-S1 speakers. It has a high performance power amplifier built in which not only supplies an amplified signal to drive the speakers, it also controls the operation of the speakers directly providing a improvement in driving and damping force over conventional systems. The Active Servo Processing Speakers feature specially tuned enclosures for effective operation even with the smallest amplitude voice coil oscillations offering a linear response extending down to the lower bass frequencies.

    With rotary bass range control, rotary input level control, cartridge holder (for the cartridge which is supplied with the Active Servo Processing speakers), INPUT1 phono sockets for preamplifier, INPUT2 terminals for connection to an integrated amplifier loudspeaker output, INPUT selector switch, terminals for the Active Servo Processing speakers and an unswitched AC outlet (200 watts max.).

    Specification  
    Rated Inputs  
      INPUT 1 0.7V (1 kHz)
      INPUT 2 10V (1 kHz)
    Input Impedance  
      INPUT 1 20kΩ
      INPUT 2 4.4kΩ
    Rated Output 70W + 70W (6 ohms) equivalent
    Dynamic Power 100W + 100W (6 ohms) equivalent

    Power consumption:  195 watts

    HiFi Leistungsverstärker mit Active Servo Technologie. Der AST-A10 ist als Zweikanal-Leistungsverstärker speziell für Yamaha Active Servo Prozessing-Lautsprecher ausgelegt. Für den Baßbereich und Eingangspegel stehen Regler zur Verfügung, um extrem tiefe Bässe zu unterdrücken und den Eingang an einen Vollverstärker oder Vorverstärker anzupassen. Die Sinusleistung ist im AST-Betrieb nicht meßbar, mit beiliegender eingesetzter Linear-Cartridge stehen 2x70W an 6 Ohm zur Verfügung. Die Dynamikleistung liegt bei ca 2x100W.

  • Net weight (2.2 lb = 1 kg)
  • 8.5 kg / 18 lb 11.6 oz (18.722 lb)
  • Price in first year of sale
  • 825.00 DM
  • Source of data
  • -- Original prospect or advert
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Owner's manual Yamaha Active Servo Technology AST-A10)
  • Author
  • Model page created by a member from D. See "Data change" for further contributors.

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