• Country
• Japan

• Manufacturer / Brand
• Kenwood, Trio-Kenwood Inc.; Komagane

• Year
• 1977–1979

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 148159

• • alternative name: Trio Corp.
  • Brand: Jennen

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

• 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; 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: AM-FM Stereo Tuner KT-7500 - Kenwood, Trio-Kenwood Inc.;

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 430 x 149 x 377 mm / 16.9 x 5.9 x 14.8 inch

• Notes

• A hi-fi AM-FM stereo tuner with an analogue dial housed in a silver metal case. CB-8K walnut veneer cabinet, B-8 walnut veneer side panels or D-7 carrying handles optional. With Signal and Tuning meters, AM, FM and Stereo indicators, rotary Tuning and Output Level controls, switches for IF Band (Wide, Narrow) and Muting (On, Off), and a rotary Selector switch (AM, FM Auto, FM MPX Filter, FM Mono). On the rear, an adjustable AM bar antenna, terminals for AM and FM antennae, RCA phono sockets for Fixed and Variable Line Output and FM Multipath, and an FM De-Emphasis switch (50µs, 25µs for FM Dolby). Other de-emphasis options depending on market.

  Specification
  FM TUNER SECTION (IHF)
  FM Frequency Range	88-108 MHz
  Usable Sensitivity	9.8dBf (1.7µV)
  50dB Quieting Sensitivity	14.1dBf (2.8µV) Mono, 36.1dBf (35µV) Stereo
  S/N Ratio	75dB (Mono), 70dB (Stereo)
  Total Harmonic Distortion
  Mono at 1kHz          15kHz	0.08% WIDE, 0.2% NARROW 0.15% WIDE, 0.15% NARROW
  Stereo at 1kHz          15kHz	0.1%  WIDE, 0.3% NARROW 0.5%  WIDE, 1.5% NARROW
  Capture Ratio	1.0dB WIDE, 2.0dB NARROW
  Alt. Channel Selectivity	30dB WIDE, 100dB (400kHz) NARROW
  Stereo Separation
  at 1kHz     15kHz	50dB WIDE, 45dB NARROW 40dB WIDE, 30dB NARROW
  Frequency Response	20Hz-15,000Hz +0.2dB,-1.5 dB
  Spurious Response Ratio	110dB
  Image Response Ratio	105dB
  IF Response Ratio	110dB
  AM Suppression Ratio	60dB
  Antenna Impedance	300Ω balanced, 75Ω unbalanced
  Output Level at 400Hz 100% Mod	Fixed: 0.75V/1.2kΩ, Variable 0-1.5V/1.2kΩ
  Multipath Output	Vertical: 0.2V/5kΩ, Horizontal 0.3V/5kΩ
  FM DET. Out	0.3V/5kΩ
  AM TUNER SECTION
  Usable Sensitivity	14µV
  S/N Ratio	50dB
  Total Harmonic Distortion	0.5%
  Image Rejection	60dB
  Selectivity	35dB
  Output Level	Fixed 0.15V, Variable 0-0.3V

  Versions/Power Requirement
  USA & Canada model / 120V AC 60Hz
  Europe model / 120/220V AC 50/60Hz switchable
  Scandinavia model / 220V AC 50/60Hz
  UK, Australia & others model / 110-120/220-240V AC 50/60Hz switchable

  Power Consumption: 20 watts

  Similar to the Kenwood KT-7550 AM-FM Stereo Tuner which is housed in a titanium cabinet.

• 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 (1977-78 and 1978-79 Kenwood Hi-Fi Stereo catalogues)

• Literature/Schematics (1)
• - - Manufacturers Literature (Service manual Kenwood KT-7500 (KT-7550) dated 1977)

• Literature/Schematics (2)
• - - Manufacturers Literature (Instruction manual KT-7500)

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 902 models, 836 with images and 251 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kenwood, Trio-Kenwood Inc.; Komagane