JVC JA-X 9

Data

General

• Manufacturer: JVC
• Model: JA-X 9
• Type: Quadro amplifier with built-in CD-4
• Years of manufacture: 1975 - 1976
• Made in: Japan
• Color: Front champagne, housing sheet metal gray
• Remote control:
• Power consumption: 380 W
• Dimensions: 420 x 138 x 362 mm
• Weight: 12 kg
• New price approx:

Connections:

• Number of inputs:
  • Phono 1, 2: 1.5 mV, 100 kOhm.
  • AUX 1, 2, 3: 200 mV, 50 kOhm
  • Tape Play 1, 2: 200 mV, 50 kOhm
• Number of outputs:
  • Tape Rec 1, 2: 100 mV

Tape Rec DIN: 30 mV

• • 2 speaker pairs: 1 x front, 1 x rear
    • 4-channel: 4 - 16 Ohm
    • 2-channel BTL: 8 - 16 Ohm
  • 2 x headphone output front + rear: 6.3 mm jack each

Technical data:

Amplifier:

• continuous power: quadrophonic, 20-20 kHz
  • 8 Ohm: 4 x 25 Watt

4 Ohm: 4 x 31 Watt

• music power: quadrophony, 20-20 kHz
  • 8 Ohm:
  • 4 Ohm:
• Continuous power: BTL stereo, 20- 20 kHz
  • 8 Ohm: 2 x 56 Watt
  • 4 Ohm:
• Music power: BTL Stereo, 1 kHz
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: 0.5 % at rated power
• Attenuation factor: 50 at 8 ohms, 1 kHz
• Frequency response: 25 - 40,000 Hz, ± 0.5 dB
• Power bandwidth: 5 - 200'000 Hz, - 3 dB
• Spurious voltage spacing: 90 dB
• Channel separation: 55 dB (1 kHz)
• Signal-to-noise ratio:
  • Phono: 61 dB
• High Level: 75 dB
• Tone control:
  • Bass: ± 10 dB at 100 Hz
  • Tweeter: ± 10 dB at 10 kHz
• Loudness: yes, + 12 dB at 50 Hz, + 6 dB at 10 kHz
• Low Filter (Subsonic): yes
• High Filter: yes
• Muting: - 20 dB

CD-4 Demodulator Part:

• Input sensitivity: 2.5 mV
• Input impedance: 100 kOhm
• Distortion factor: 0,07
• Signal-to-noise ratio: > 70 dB
• Channel separation at 1 kHz:
  • Left to Right: 50 dB

front to rear: 30 dB

• Frequency range: 20 - 15'000 Hz

Special Features

• Equipped with all quadraphonic systems (adjustable on the front panel):
  • CD-4
  • Discrete
  • Matrix 1, 2
• 4 VU meters, range switchable
• Tape Dubbing

Remarks

• Previous JVC Quadro amplifier models:
  • JVC 4VN-550
  • JVC 4VN-770
  • JVC 4VN-880
  • JVC 4VN-990

• Corresponding tuner:
  • JVC VT-700

• Corresponding equalizer:
  • JVC SEA-V 7 E

Pictures

• Extract from brochure: JVC JA-X 9

• Picture: JVC JA-X 9 back side

• Introduction to JVC 4-channel playback technology.

Links

• [[Introduction to Kenwood 4-channel playback technology
  • Introduction Kenwood 4-channel playback technology