ASC AS 4504

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Data[edit]

General

  • Manufacturer: ASC
  • Model: AS 4504
  • Type: Coil tape
  • Years of manufacture: 1977 - 1979
  • Made in: Germany
  • Color: Black
  • Remote control: Connection for cable remote control
  • Power consumption: 90 Watt
  • Dimensions (WxHxD): 430 x 155 x 345 mm
  • Weight: 18 kg
  • Original price approx.: 1'500 DM (1979)


Connections

  • Number of inputs:
    • Radio (DIN): 1 mV / kOhm / 4.7 kOhm.
    • Reserve (DIN): 100 mV / 1 MOhm
    • 2x microphone: 0.1 mV / 1.2 kOhm
    • Slide control:
    • Projector:
  • Number of outputs:
    • Radio (DIN): 1.3 V / 500 Ohm
    • Monitor (DIN): 1.3 V / 500 Ohm
    • Headphones: 5 - 2'000 Ohm


Technical data

  • Max. coil diameter: 18 cm
  • Drive: 3 motors
  • Heads: 3
  • Tracks: 4
  • Tape speeds: 19 / 9.5 / 4.75 cm/s
  • Slip:
  • Speed variations:
  • Pitch fluctuations:
    • 4.75 cm/s: < 0.2%
    • 9.5 cm/s: < 0.12%
    • 19 cm/s: < 0.06%
  • Overall frequency response:
    • 4.75 cm/s: 20 - 12'000 Hz
    • 9.5 cm/s: 20 - 16'000 Hz
    • 19 cm/s: 20 - 23'000 Hz
  • Quiescent noise voltage range:
    • 4.75 cm/s: 52 dB
    • 9.5 cm/s: 61 dB
    • 19 cm/s: 62 dB
  • Extraneous voltage spacing:
    • 4.75 cm/s: 46 dB
    • 9.5 cm/s: 52 dB

19 cm/s: 52 dB

  • Distortion factor:
    • 9.5 cm/s: 0.8 %
    • 19 cm/s: 0.6
  • Equalization:
    • 4.75 cm/s: 120µs + 3180µs
    • 9.5 cm/s: 90µs + 3180µs
    • 19 cm/s: 50µs + 3180µs
  • Crosstalk attenuation: 50 dB (stereo, 1 kHz)
    • Mono at 1,000 Hz: - 70 dB; between 500 Hz and 6,300 Hz: - 55 dB
    • Stereo at 1,000 Hz: - 48 dB; between 500 Hz and 6,300 Hz: - 43 dB
  • Cancellation attenuation: > 70 dB at all speeds
  • Premagnetization and cancellation frequency: 130 kHz


Special equipment

  • Photoelectronic tape tension control
  • Tape calming roller
  • Electronically controlled brakes
  • Peak value display
  • Pulse touch keys
  • Front and rear tape control
  • Multiplay, echo
  • Accessories and special modules
    • Acrylic glass lid with carrying handle


Remarks[edit]


Pictures[edit]

  • Image: ASC AS 5004 (optics same as AS 4504)

ASC AS-5004-1.jpg


Reports[edit]

  • Detailed reports at "ASC Hifi devices": [[1]]


Links[edit]