AM-FM Stereo Tuner KT-815

Kenwood, Trio-Kenwood Inc.; Komagane

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  • Year
  • 1979/1980
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 148176
    • alternative name: Trio Corp.
    • Brand: Jennen

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 110-120; 220-240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: AM-FM Stereo Tuner KT-815 - Kenwood, Trio-Kenwood Inc.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 440 x 153 x 402 mm / 17.3 x 6 x 15.8 inch
  • Notes

  • A hi-fi AM/FM stereo tuner with an analogue dial housed in a metal case with a silver front. Pulse count detector circuit ensures superb FM sound, Servo-lock feature with touch-tune system locks in the tuned signal automatically. Muting Control, MPX filter blends high frequencies of stereo broadcasts during noisy reception conditions. Sample-And-Hold MPX process for up to 55dB left-to-right channel separation. Signal strength and Tuning meters, IF Band switch (Wide, Narrow), Output Level control. On the back, an AM ferrite bar antenna, an F type 75Ω connector for coaxial FM antenna and terminals for AM and FM antennae, RCA phono sockets for variable and fixed line output and multipath output and an FM de-emphasis switch.

    Specification  
    FM TUNER SECTION  
    FM Frequency Range 88MHz-108MHz
    Usable Sensitivity 10.3dBf (1.8µV)
    50dB Quieting Sensitivity Mono 15.8dBf (3.4µV), Stereo 37.2dBf (40µV)
    Signal to Noise Ratio Mono 84dB, Stereo 80dB
    Total Harmonic Distortion  
    Mono at  WIDE  NARROW
     1kHz
     50Hz-10kHz    		 0.04%   0.16%
    0.065%  0.4%
    Stereo at  
     1kHz
     50Hz-10kHz    		 0.05%   0.15%
    0.15%   0.5%
    Capture Ratio 1.0dB    2.0dB
    Alternate Channel Selectivity 45dB     60dB (300kHz)
    Stereo Separation  
     1kHz
     50Hz-1kHz    		 55dB     49dB
    45dB     40dB
    Frequency Response 30Hz-15,000Hz +0.3dB,-0.5dB
    Spurious Response Ratio 120dB
    Image Response Ratio 110dB
    IF Response Ratio 105dB
    AM Suppression Ratio 65dB
    Sub Carrier Product Ratio 70dB
    Antenna Impedance 300Ω balanced, 75Ω unbalanced
    Output Level 1kHz 100% Mod. Fixed 0.7V, 2.5kΩ, Variable 0-1.3V, 1.5kΩ
    Multipath Output Vertical 0.02V, 1.0kΩ, Horizontal 0.35V, 10kΩ
    AM TUNER SECTION  
    Usable Sensitivity 9µV
    Signal to Noise Ratio 55dB
    Total Harmonic Distortion 0.4%
    Image Rejection 60dB
    Selectivity 38dB
    Output Level 400Hz 30% Mod. Fixed  0.2V, 2.5kΩ, Variable 0-0.3V, 1.5kΩ

    Versions/Power Requirements                
    USA & Canada Model  /  120V AC 60Hz
    General  /  110-120/220-240V AC 50/60Hz with voltage selector

    Power Consumption: 20 watts

    Similar to the Kenwood KT-8155 AM-FM Stereo Tun

  • Net weight (2.2 lb = 1 kg)
  • 7.6 kg / 16 lb 11.8 oz (16.74 lb)
  • Source of data
  • -- Original prospect or advert
  • Mentioned in
  • -- Original prospect or advert (1979/80 Trio Hi-Fi Stereo catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual Kenwood KT-815 KT-8155 dated 1979-4)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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