Technics RS-B 765

Data

General

• Manufacturer: Technics
• Model: RS-B765
• Type: Three-head stereo cassette deck with rear band control
• Years of manufacture: 1990 - 1991
• Manufactured in: Osaka, Japan
• Color: black
• Remote control:
• Power consumption: 21 W
• Dimensions: Width 430 mm, Height 135 mm, Depth 290 mm.
• Weight: 5.30 kg
• Original price approx.: 850 DM

Connections

• Number of inputs: 1

LineIn (2xCinch) 60 mV/47 kOhm

• Number of outputs: 2
  • Headphones (6.3mm jack) 125 mV/8 Ohm (8 Ohm ~ 600 Ohm)
  • LineOut (2xCinch) 400 mV/800 Ohm

Technical Data

• Tone heads:3 - 1 hard permalloy recording head, 1 hard permalloy playback head, 1 ferrite double gap erasing head.
• Motors:3 - 1 quartz direct-drive motor for the sound shaft, 1 DC motor for the winding drive, 1 DC motor for opening and closing the cassette compartment.
• Synchronous fluctuations: 0.05% (WRMS), 0.14% (DIN)
• Tape types: FE,CrO2, pure iron tape
• Frequency response:
  • FE band: 30 Hz ~ 17 kHz (+/- 3 dB), 20 Hz ~ 18 kHz (DIN).
  • CrO2: 30 Hz ~ 18 kHz (+/- 3 dB), 20 Hz ~ 19 kHz (DIN)
  • Metal: 30 Hz ~ 19 kHz (+/- 3 dB), 20 Hz ~ 20 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: 57 dB (A-weighted)
• Auto Reverse: no
• Title search: yes
• Dolby: Dolby B and Dolby C
• MPX filter: yes
• Faders:
• Pitch control:
• CD direct recording: no

Special Features

• Front loader with three heads and rear belt control
• Autostop at the end of the belt

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 Quartz-DD drives AR350
• Trembling in the sound: Lubricant of the winding plate axles flocculates! Re-lubricate with graphite grease
  
• Sound leaks: Spring of pressure roller 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

Links

• [image RS-B765]