Technics RS-B 665

Data

General

• Manufacturer:Technics
• Model: RS-B665
• Type: Single
• Years of manufacture: 1990-1991
• Made in: Japan
• Color:
• Remote control:
• Power consumption: 21 W
• Dimensions: 430 x 135 x 290 mm
• Weight: 4,9 kg
• Original price approx.: 700 DM

Connections

• Number of inputs: 2
  • Line in
  • Mic

• Number of outputs: 2
  • Line OUT
  • Headphones

Specifications

• Tone heads:
  • Tone head made of hard permalloy
  • Double-gap ferrite head
• Motors:
  • Quartz direct drive DC motor.
  • DC motor
• Synchronous speed variation:0.05% (WRMS)
• Band types:all
• Frequency Response:
  • FE band: 30 Hz ~ 16 kHz (+/- 3 dB), 20 Hz ~ 16 kHz (DIN).

CrO2: 30 Hz ~ 16 kHz (+/- 3 dB), 20 Hz ~ 17 kHz (DIN)

• • Metal: 30 Hz ~ 18 kHz (+/- 3 dB), 20 Hz ~ 18 kHz (DIN)
• Distortion factor:
• Signal-to-noise ratio:(signal level = full scale; CrO2 band).
  • with Dolby C noise reduction: 74 dB (CCIR)

with Dolby B noise reduction: 66 dB (CCIR)

• • without noise reduction: 56 dB (A-weighted)
• Auto Reverse:
• Title search: yes
• Dolby:Dolby B and Dolby C
• MPX Filter:
• Fader:
• Pitch control:
• CD Synchro Recording:

Special Features

• Quartz-controlled digital servo direct drive motor
• Linear Magne-Field Class AA system
• Phase compensation circuit
• Dolby B,C,HX-Pro
• APRS (Advanced Precise Rec-Level System)
• TNRC chassis
• Logic control with 2 motors
• MPX Filter
• Bias Adjust
• Linear electronic band counter
• Improved sound quality should be achieved by high quality PXS capacitors
• Microphone input

Remarks

The "PXS" capacitors in the signal path have now reached the end of their life cycle, which is noticeable by bass loss, channel imbalance and undifferentiated sound. Since these capacitors are also installed in the power supply, in the medium term there may also be failures due to short circuits or hum disturbances due to loss of filter efficiency. However, the original very good sound quality can be restored by a professional revision.

• Permanent magnet on the Capstan can come loose, especially after transport. Leads to fast grinding noises! All DD Drive AR350
• Trembling in the sound: Lubricant of the winding plate axles flocculates! Re-lubricate with graphite grease
  
• Sound leaks: Pressure roller spring gives way. Item no. 120-1/ ET. No. RUW140ZC -> no longer available
• Due to age, the plastic elements in the running gear become increasingly brittle and break, the pinions of the rewind motor burst open and slip off => irreparable

Other models of the same series:

• RS-B465
• RS-B565
• RS-B665
• RS-B765
• RS-B965

Pictures

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