Stereo Tuner TX-7500

Pioneer Corporation; Tokyo

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  • Year
  • 1975/1976
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 278933

 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) / 110; 120; 130; 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Tuner TX-7500 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 150 x 365 mm / 16.5 x 5.9 x 14.4 inch
  • Notes

  • A hi-fi AM/FM stereo tuner with an analogue dial. With Signal Strength and Tuning meters, Stereo indicator, rotary Output Level control, rotary Function switch (AM, FM Auto, FM Mono), MPX Noise and FM Muting switches, on the back a built-on adjustable ferrite bar antenna, terminals for AM and FM antennae, RCA phono sockets for Fixed and Variable Line Output and FM Multipath, an unswitched AC outlet, and an FM De-Emphasis switch,  25/75µS on the 120V model and 25/50/75µS on the multi-voltage model.

    Specification  
    FM Section  
    Circuitry 1 FET, 1-stage RF Amplifier 4-gang Variable
    Capacitor, 5-stage Limiter, PLL MPX Circuit
    Sensitivity  
     IHF
     50dB Quieting    		 1.9µV
    4.0µV (mono), 50µV (stereo)
    Signal-to-Noise Ratio 73dB (mono), 68dB (stereo)
    Total Harmonic Distortion 1kHz 0.2% (mono), 0.3% (stereo)
    Capture Ratio 1.0dB
    Selectivity 400 kHz 80dB
    Frequency Response 50Hz-10kHz +0.2dB,-0.5dB
    20Hz-15kHz +0.2dB,-2.0dB
    Separation 1kHz: 40dB, 50Hz-10kHz: 35dB
    Image Rejection 85dB
    IF Rejection 90dB
    Spurious Rejection 90dB
    AM Suppression 55dB
    Muting Threshold 2.2µV
    Antenna 300Ω balanced, 75Ω unbalanced
    AM Section  
    Circuitry 1-stage RF Amplifier, 2-gang Variable Capacitor
    Sensitivity 300µV/m (IHF, Ferrite antenna)
    15µV (IHF, Ext. antenna)
    Selectivity 35dB
    Signal-to-Noise Ratio 50dB
    Image Rejection 40dB
    IF Rejection 55dB
    Audio Section  
    Output Level/Impedance FIXED  650mV/5kΩ
    VARIABLE  50mV - 1.5V/2.5kΩ

    Semiconductors: FET: 1, ICs: 3, Transistors: 16, Diodes: 7

    Versions/Power requirements
    120V AC 60Hz
    220V AC 50/60Hz
    110, 120, 130, 220, 240V AC 50/60Hz with voltage selector

    Power Consumption:  20W

    Frequenzbereiche UKW: 87,5 bis 108 MHz, MW: 525 bis 1605 kHz
    Ausgangspegel Fest 650mV/5kΩ, Variable 50mV bis 1.5V/2.5kΩ
    Empfindlichkeit (DIN)
     (Mono bei 26db/SR, 40kHz Hub)    		 1,4µV
    Signal/Rausch-Abstand Stereo DIN 68db
    Klirrgrad (DIN) Stereo 0,3%
    Gleichwellenselektion 1,0 dB
    Selektivität (IHF) 80 dB
    Frequenzumfang (DIN) 20 Hz-15kHz
    Stereo Kanaltrennung 40 dB
    Spiegelfrequenzunterdrückung 85 dB
  • Net weight (2.2 lb = 1 kg)
  • 8.2 kg / 18 lb 1 oz (18.062 lb)
  • Mentioned in
  • - - Manufacturers Literature (Orginalprospekt Pioneer "Hi-Fi-Stereo Componenten 1975/76")
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Operating instructions TX-7500)
  • Author
  • Model page created by Roland Müller. See "Data change" for further contributors.

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