Denon DR-M22 Service Manual

Specifications and Main Features

  • Type: This unit is a Vertical tape loading 4-track 2-channel stereo cassette tape deck
  • Heads:
  • There is one unit of SF record playback combination head
  • There is one unit of Erase head (Ferrite)
  • There is one unit of Electronic servo DC motor (capstan)
  • There is one unit of 5 pole dc motor (reel winding).
  • Tape Speed: 4.8 cm/sec
  • Fast forward, rewind time with C-60 casette are approx 90 sec
  • Recording bias are approx 105 khz
  • Overall S/N ratio is more than 73 dB for ccir/arm (3% thd level)
  • Overall frequency response 30~ 19 000 +3 dB at approx. -20 dB metal tape
  • Channel separation at 1 khz is more than 40 db at 1 khz
  • Crosstalk at 1 khz is more than 65 db at 1 khz
  • WOW & flutter- 0.045% wrms.
  • IN :
  • Line in maximum input level is 77.5 mV – 20 dB or more and input is 50 k ohms unbalance OUT :
  • Line out maximum output level is 775 mV or O dB or more with 10 k ohms load and recorded level of 200 pwb/mm Head WEAR: Max output level 1.2 mW under 8 ohm up to 1.2 Kohm optimum load.
  • Accessories: Parallel pin cord x2
  • Power Source: Label shows voltage supports 50hz/60hz
  • Power usage: 19 W
  • Dimensions: 434 mm x 115 mm x 286 mm
  • Weight: 5.6 kg
  • Other specifications include:
  • Servo technology controlled by a computer interface
  • Dual-capstan tape transport system with feedback
  • User friendly controls with a soft touch and almost silence in actuation
  • Logic controlled functions of the tape machine
  • The combination head assembly for recording and playback contains a new SF record/playback device to enable a three head configuration DENON makes use of.
  • A 4-digit computing tape counter and a memory stop in the tape recorder
  • Systems employing Dolby C type noise suppression.
  • Extended range multi-color fluorescent peak meters.
  • Automatic tape changer
  • Good quality 5 pole reel motor, DC powered.
  • Recording Bias adjustment

Frequently Asked Questions

Q: What is the tape loading mechanism of the device?

A: The device utilizes a vertical tape loading mechanism.

Q: About how long does it take a C-60 cassette to wind or rewind?

A: A C-60 cassette would take about a minute and a half to wind or rewind.

Q: What kind of noise reduction systems are integrated into the cassette tape deck?

A: The noise reduction accomplished in this tape deck is of Dolby-C type.

Q: What is the frequency response of the entire device?

A: The overall frequency response is 30~19,000 Hz +3 dB (at ~-20 dB with METAL tape).

Q: What is the power consumption of the device?

A: The averaged absolute consumption power over a period of 30 minutes is 19W.

Q: What is the jack’s maximum output level for the headphone?

A: The maximum output level for the headphone jack is 1.2 mW with an impedance of 8 ohm or greater than 1.2 K inohm.

Q: Which heads does the cassette deck employ?

A: The head used are SF Record/Playback Combination and the Ferrite Erase Head.

Q: How much is the device's signal-to-noise ratio under the condition that Dolby C noise reduction is on?

A: The signal-to-noise ratio with Dolby C noise reduction switched on is better than 73 dB (CCIR/ARM) under the relative distortion of 3 percent level.

User Manual

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Denon DR-M22 Service Manual
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