Power Amplifier STA 100

Radford Audio Ltd.; Bristol

Data
Forum
Pictures
Collections

  • Year
  • 1967
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 334530

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

 Technical Specifications

  • Number of Tubes
  • 10
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 50/60Hz: 100-140/200-250 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 200 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Power Amplifier STA 100 - Radford Audio Ltd.; Bristol
  • Shape
  • Book-shelf unit.
  • Notes

  • A dual channel power amplifier designed for commercial and professional use with continuous power output of more than 100 watts RMS per channel. It can be powered direct from the mains or from the switched AC outlet on the Radford SC22P Control Unit. With 3 pin input connectors for each channel, terminals for one pair of loudspeakers.

    Specification  
    Power Output Rating 100 watts nominal, continuous
    RMS sine wave per channel
    Voltage Frequency Response
     (at 1 watt output)    		 20Hz to 20,000Hz  -1dB,+0dB
    Power Frequency Response
     (at rated power)    		 20Hz to 20,000Hz  -1dB,+0dB
    Power Frequency Bandwidth
     (at rated power)    		 20Hz to 20,000Hz
    Output Load Characteristics  
     Damping Factor
     (Referred to 60 watts)    		  
      8Ω load at 1kHz
      8Ω load at 50Hz
     16Ω load at 1kHz
     16Ω load at 50Hz    		 22
    15
    60
    30
     Matching 8-16Ω nominal and 100V line
    Stability Unconditionally stable in accordance
    with BS3860 specification
    Input Sensitivity  
     for 60 watts output into 8Ω load
     for 60 watts output into 16Ω load    		 350mV
    450mV
    Input Impedance 100 kΩ
    Signal-to-Noise Ratio 95dB below 60 watts output into 16Ω
    Crosstalk  
    At 5kHz and below
    At 10 kHz
    At 20 kHz    		 > 85dB
    80dB
    65dB
    Transient Characteristics Rise time < 5 µsecs
  • Mentioned in
  • -- Original prospect or advert (Radford STA.100 advert Hi-Fi News Nov 1967)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Technical Instructions Radford STA.100)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum