Alpine AL-90

Data

General

• Manufacturer: Alpine
• Model: AL-90

Type: Cassette Tape Deck

• Years of manufacture: 1982 - 1987
• Made in: Japan
• Color: Black
• Remote control: yes, optional
• Power consumption: 40 W
• Dimensions: 435 x 126 x 347 mm (WxHxD)
• Weight: 10.1 kg
• Original price approx.: 3'498 DM

Connections

• Number of inputs:
  • Line In: 100 mV, 50 kOhm
  • DIN In: 0.8 mV
  • Microphones:
• Number of outputs:
  • Line Out: 550 mV, 47 kOhm
  • DIN Out:
• Headphones (6.3mm jack): 50mW / 8 Ohm

Technical Data:

• Audio heads: 3
  • 1x Sendust recording
  • 1x ferrite playback
  • 1x ferrite erase head
• Motors: 3
  • 1x double capstan direct drive servo motor for play
  • 1x DC servo motor for rewinding
  • 1x DC servo motor for opening the cassette compartment
• Tape speed: 4,75 cm / s
• Synchronous speed fluctuation: 0.022 % (WMRS)
• Tape types:
  • Normal: Type I
  • Cr02: Type II
  • Metal: Type IV
• Frequency response:
  • Normal Type I: 15 Hz - 22 kHz, 20 Hz - 20 kHz (± 1.5dB).
  • Cr02 Type II: 15 Hz - 22 kHz, 20 Hz - 20 kHz (± 1.5dB)
  • Metal Type IV: 15 Hz - 27 kHz, 20 Hz - 22 kHz (± 1.5dB)
• Distortion factor:
  • 1.3% (max., 1 kHz / 0 dB, Type I).

1.5 % (max., 1 kHz / 0 dB, Type II)

• • 1.5 % (max., 1 kHz / 0 dB, Type IV)
• Signal-to-noise ratio:
  • Normal: Type I
    • Without Dolby: > 56 dB
    • With Dolby B: > 64 dB
    • With Dolby C: > 71 dB

Cr02: Type II

• • • Without Dolby: > 58 dB
    • With Dolby B: > 66 dB
    • With Dolby C: > 73 dB
  • Metal: Type IV
    • Without Dolby: > 60 dB
    • With Dolby B: > 67 dB
    • With Dolby C: > 73 dB
• Crosstalk attenuation:
  • > 46 dB (channel, 1 kHz, 0 dB)
  • > 57 dB (track, 1 kHz, 0 dB)
• Auto Reverse: no
• Dolby: B, C
• Premagnetization frequency: 105 kHz
• Erasure frequency: 105 kHz
• Cancellation attenuation: > 69 dB (125 Hz, Type IV)
• Rewind time for C-60 cassette: FF/REW < 80 s

Special features:

• 3-head cassette tape deck with rear tape control
• Fully automatic calibration computer (BLES) for pre-magnetization, equalization and tape sensitivity.
  • BLES is an automatic calibration system that measures premagnetization, equalization, and tape sensitivity first separately, then correlatively, to adjust the system optimally for all
  • An additional manual calibration of the premagnetization allows a personal optimization
• Data memory for premagnetization, equalization and tape sensitivity
• Rec-Mute
• Auto-Space
• Auto-Rewind
• Auto-Play
• Peak / VU meter (switchable)
• Fader
• Digital Counter
• Dolby B/C
• Connectors for external Dolby
• Speed fine control
• Jog key operation
• Timer-controlled recording and playback
• Remote control

Remarks

• Other models in the same series:
  • Alpine AL-55
  • Alpine AL-60
  • Alpine AL-65
  • Alpine AL-80
  • Alpine AL-85
  • Alpine AL-90

• Corresponding Luxman Tape Decks:
  • Luxman K-03 (without speed fine control)
  • Luxman K-04 (without C.T.S.)
  • Luxman K-05

Pictures

• Picture: Alpine AL-90

Links

• report at good-old-hifi about the AL-85, which also describes a difference to the 90 (is also very high up on Google)
• review about the Luxman K-03 at the tape machine forum, where also the AL-90/K-05 is described