ASC AS 4502

Data

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: 2
• 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

• Other models in the same series:
• ASC AS 4502
• ASC AS 4504

Pictures

• Extract from brochure: ASC AS 4502 (optics same as AS 5000)

Reports

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