Alpine AL-90 specifications

Brand : Alpine

General

connectors

Tech nical data:

special features:

Other models from the same series:

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:
- headphone (6.3 mm Jack): 50mW / 8 Ohm s

heads: 3
- 1x recording
- 1x ferrite playback
- 1x ferrite erase head
motors Sendust: 3
- 1x dual capstan direct-drive servo motor for Play
- 1x DC servo motor to the coils
- 1x DC servo motor to Open the cassette compartment
flutter: 0,022% (WMRS)
band types: type I, II, III and IV
frequency response:
- type I: 15 Hz - 22 kHz, 20 Hz - 20 kHz (± 1.5 dB)
- type II: 15 Hz - 22 kHz, 20 Hz - 20 kHz (± 1.5 dB)
- type III: 15 Hz - 24 kHz, 20 - 21 kHz (± 1.5 dB)
- type IV: 15 Hz - 27 kHz, 20 Hz - 22 kHz (± 1.5 dB)
total harmonic distortion of 0.7%
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
Auto-Reverse: no
title search: no
Dolby: B, C
MPX Filter :
Fader: Yes
Pitch control: Yes, ± 6%
CD Synchro recording: No

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

fully-automatic Calibration-Computer (BLES) for bias, Equalization and ribbon sensitivity
- BLES is an automatic calibration system, which is the bias, equalization and ribbon sensitivity, first separately, then correlative measures, the System is optimal for all of the set
- An additional, manual calibration of the bias of the personal optimization
data Memory for bias, Equalization and ribbon sensitivity
the Rec-Mute
car Space
Auto-Rewind
Auto Play
Peak / VU Meter (switchable)
Digital counter
connections for external Dolby
tip button operation
timer-controlled recording and playback

BLES is an automatic calibration system, which is a measure of the bias, equalization and ribbon sensitivity, first separately, then correlatively, to set up the System ideal for all
additional manual calibration of the bias of the personal optimization

report on good-old-hifi via the AL-85, which also describes a difference to the 90s (this is also in Google is very far above)
report on the Luxman K-03 in the tape machines forum, where the AL-90/K-05 is described

Alpine AL-90