Kenwood AX-31

Data

General

• Manufacturer: Kenwood
• Model: AX-31, component of the complete system Kenwood M-31
• Type: integrated amplifier with double cassette tape deck:
• Years of manufacture: 1987 - 1989
• Made in: Japan
• Color: Black
• Remote control: no
• Power consumption:
• Dimensions: 340 x 209 x 362 mm (WxHxD).
• Weight: 6.7 kg
• New price Midi complete approx.: 1'198 DM (without CD, Equalizer, loudspeakers)

Connections

• Number of inputs:
  • Phone MM: 2.5 mV, 47 kOhm

CD: 150 mV, 47 kOhm

• • Tuner: 150 mV, 47 kOhm
  • AUX: 150 mV, 47 kOhm
• Number of outputs:
  • Headphones:
  • 1 pair of speakers:

Specifications

Amplifier

• Continuous power (at distortion)
  • 8 Ohm: 2x 35 W (RMS, 1 kHz)
  • 4 Ohm:
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: 0.09 % THD at 8 Ohm
• Attenuation factor: 50 at 8 Ohm
• Frequency response:
  • Phono MM: 20 - 20'000 Hz
  • High level: 10 - 70'000 Hz, ± 3 dB
• Signal to noise ratio:
  • Phono MM: 70 dB
  • High level: 97 dB
• Tone control
  • Bass: ± 10 dB at 100 Hz

Treble: ± 10 dB at 10 kHz

• Loudness:
• High Filter:
• Low Filter:

Tape Deck

• Audio heads: 3 (1x head for playback tape A, 1x head for record and playback tape B, 2x ferrite head for erase)
• Motors: 2 (servo controlled DC motor)
• Synchronisation fluctuations: 0.15
• Tape types: Normal, Chrome, Metal
• Frequency response:
  • Normal: 30 - 14'000 Hz
  • Chrome: 30 - 15'000 Hz

Metal: 30 - 15'000 Hz

• Distortion factor: < 1
• Dolby: B
• Signal-to-noise ratio:
  • Normal: 56 dB
  • with Dolby B: 64 dB
• Auto Reverse:
• Title search:
• Premagnetization frequency: 105 kHz
• Rewind time: 110 seconds for C-60

Remarks

• Other models in the same series:
• Integrated amplifier with double cassette tape deck:
• Kenwood AX-31

• Tuner:
• Kenwood T-31 L

• Record player:
• Kenwood P-31

• Option: CD player:
• Kenwood DP-310

• Option Equalizer:
• Kenwood GE-600

• Speaker option:
• Kenwood S-311

Pictures

• Extract from brochure: Kenwood Midi-System M-31