Technics RS-B 765 specifications

General

Connections

Tech nical data

Special features

The "PXS" capacitors in the signal path have now reached the end of their life cycle, which is noticeable by bass loss, channel inequality and undifferentiated sound. Since these capacitors are also installed in the power supply, failures due to short circuits or hum disturbances due to loss of the screen action may also occur in the medium term. However, the originally very good sound quality can be restored by an expert revision.

Manufacturer: Tech nics
Model: RS-B765
Type: Three-head stereo cassette deck with back strap control
Years of construction: 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
Factory price approx.: 850 DM

Number of inputs: 1
- LineIn (2xCinch) 60 mV/47 kOhm

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

Headphones (6.3mm jack) 125 mV/8 ohm (8 Ohm ~ 600 ohm)
LineOut (2xCinch) 400 mV/800 ohm

Sound heads:3 - 1 recording head made of hard permalloy, 1 playback head made of hard permalloy, 1 ferrite double gap quenching head
Motors:3 - 1 quartz direct-drive motor for the tonal shaft, 1 DC motor for the winding drive, 1 DC motor for opening and closing the cassette compartment.
Synchronisation fluctuations: 0.05% (WRMS ), 0.14% (DIN)
Band types: FE,CrO2, pure iron band
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)
Total harmonic distortion:
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 (rated according to A)
Auto-reverse: no
Track search: yes
Dolby: Dolby B and Dolby C
MPX filter: yes
Fader:
Pitch control:
CD direct recording: no

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)

with Dolby C noise reduction: 74 dB (CCIR)
with Dolby B Noise reduction: 66 dB (CCIR)
without noise reduction: 57 dB (rated according to A)

Front loader with three heads and backband control< /li>
Autostop at the end of the belt

Permanent magnet on the capstan can come off, especially after transport. Leads to fast grinding noises! All Quartz-DD drives AR350
tremble in the sound: lubricant of the winding plate axles flakes out! Re-lubricate with graphite grease
The sound is fading: the spring of the pressure roller is giving way. Pos. No. 120-1/ ET. No. RUW140ZC -> no longer available
Due to age, the plastic elements in the drive are increasingly brittle and break, the sprockets from the rewinding motor burst and slip => irreparable