Dual C 820

Data

General

• Manufacturer: Dual
• Model: C 820

Type: Cassette Tape Deck

• Years of manufacture: 1979 - 1982
• Made in: Japan
• Color: Silver or Brown
• Remote control:
• Power Consumption:
• Dimensions (WxHxD): 440 x 150 x 360 mm.
• Weight: 6.5 kg
• Original price approx.: 698 DM

Connections

• Number of inputs: 2

Line In: 0,15 mV

• • Microphone: 0.2 mV
• Number of outputs:
  • Line Out: 1'000 mV, 3,3 kOhm
  • Monitor: 1'000 mV, 3,3 kOhm
• Headphones (6.3mm jack): 775 mV, 400 Ohm

Technical data:

• Audio heads: 2
  • 1x head for recording and playback
  • 1x ferrite erase head
• Motor: 1
• Tape speed: 4.75 cm / s
• Synchronization fluctuations: 0.04
• Tape types:
  • Normal: Type I
  • Cr02: Type II
  • Metal: Type IV
• Frequency response:
  • Normal Type I: 20 Hz - 17 kHz
  • Cr02 Type II: 20 Hz - 18 kHz
  • Metal Type IV: 20 Hz - 19 kHz
• Distortion factor: 2.0
• Signal-to-noise ratio:
  • Without Dolby: 58 dB
  • With Dolby: 66 dB
• Crosstalk attenuation:
• Auto-Reverse: no
• Dolby: yes
• Cancellation attenuation: > 70 dB
• Premagnetization frequency: 100 kHz
• Rewind time C-60 cassette: 100 seconds

Special features:

• Input selector switch for DIN and RCA jacks, and microphone (essential for operation on equipment with DIN jacks).
• 6-step band selector switch
• Limiter (prevents overloads and still retains dynamics, which is better than an automatic level control)
• MPX filter
• Headphone jacks
• 2 microphone jacks: 6.3 mm jack
• Detachable head cover

Remarks

• DUAL's Load & Lock invention sensors allow the cassette to be removed on the fly. Simply reach in, the unit waits in playback standby for the next cassette and continues playing immediately. With the internal DIN adapter, the unit can be used not only with modern systems with RCA sockets, but also with older amplifiers and receivers with DIN connections. Switching is not necessary. By simply loosening the two knurled screws, the metal cover can be removed and the complete head and drive technology is exposed. If over the years a dust lint should have formed which could affect the drive. The 6-digit tape selector switch ensures brilliant sound with every cassette. The high-precision mechanism from the Black Forest ensures perfect precision for the entire life of the cassette recorder, without ever "weakening". The very easy to use ergonomic toggle switches with metal knob work perfectly and without dropouts or "cracking". With the tandem potentiometer both channels can be controlled separately. Simply hold one and control the other. Thanks to the peak level indicator, your favorite recordings can be perfectly levelled to within 1 decibel (dB)! For your own microphone recordings, the DUAL has 6.3 mm jack sockets, separately for left and right. The switchable level limiter provides for a limitation of too high levels in manual level control mode. Advantage: no loss of dynamic range, no constantly changing volume levels as caused by automatic level control. What other device today offers so many possibilities to let your creativity run free?

• Other models of the same series:
• Dual C 819
• Dual C 820
• Dual C 839 RC

Pictures

• Extract from brochure: Dual C 820