Technics RS-BX 707
Data
General
- Manufacturer: Technics
- Model: RS-BX707
- Type: Three-head stereo cassette deck with rear tape control
- Years of manufacture: 1991-92
- Made in: Osaka, Japan
- Color: black - anthracite
- Remote control: No
- Remote control: No
- Power consumption: 20 W
- Dimensions: Width 430 mm, height 135 mm, depth 300 mm.
- Weight: 5.00 kg
- Original price approx.: 650 DM
Connections
- Inputs:
- CD Direct In: No
Line In: 2xCinch, 60 mV/47 kOhm
- Outputs:
- Headphones: 6.3mm jack, gold-plated, 125 mV/8 Ohm (8 Ohm ~ 600 Ohm), adjustable
- Line Out: 2x Cinch (RCA), 400 mV/800 Ohm
Technical Data
- Audio heads: 1 recording head made of permalloy, 1 playback head made of permalloy, 1 ferrite double gap erasing head.
- Recording system: alternating current premagnetization
- Premagnetization frequency: 80 kHz
- Erasing system: alternating current
- 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.
- Synchronisation fluctuations: 0.05% (WRMS) ; +/- 0.14% (DIN)
- Tape types: FE, CrO2, pure iron tape
- Frequency response:
- FE band: 30 Hz ~ 17 kHz, +/- 3dB ; 20 Hz ~ 18 kHz (DIN).
- CrO2: 30 Hz ~ 18 kHz, +/- 3dB ; 20 Hz ~ 19 kHz (DIN)
Metal: 30 Hz ~ 19 kHz, +/- 3dB ; 20 Hz ~ 20 kHz (DIN)
- Distortion factor: n.a.
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, TPS
- Dolby HX PRO: Dolby B, Dolby C
- MPX Filter: yes
- Fader: No
- Pitch control: No
- CD Direct Recording: No
Special Features
- Manual bias and level adjustment for left and right using built-in test tone generator (10 kHz bias / 400 Hz pickup current).
- Backband control
- Memory Stop, repeat function<->AB up to 16x
- Real time counter, switchable to normal band counter
- Recording level function (APRS), serves only for better leveling
- Quartz-controlled direct drive (Direct Drive)
TNRC (Technics Non-Resonant Compound) -> special base plate to absorb vibrations
- Keyboard illumination resp. LED lights up at "Play" and "Record
Technical change
Because it happened with some devices that the tape was damaged, a change in the winding motor control was recommended!
Change:
Ten diode D504 MTZJ5R6CTA is changed to MTZJ5R1BTA!
Errors encountered:
- No sound, no recording: C619, C620, C621, C622 & C624 -> renew 1000uF-10V.
- Permanent magnet on capstan comes loose, especially after transport. Leads to fast grinding noises! All DD Drive AR350
- Gear wheel of the winding disk drive can break/ crack! Item no. 130/ ET. No. RDG0034 -> No longer available!
- Trembling in the sound:
Lubricant of the winding plate axles flocculates! Re-lubricate with graphite grease - Tone leaks:Spring of pressure roller gives way. Item no. 120-1/ ET. No. RUW140ZC -> no longer available!
Remarks
- Direct Drive: The drive is without belt. A permanent magnet is attached to the capstan flywheel, which is driven by an electromagnetic field. Nevertheless there is a belt - for the motorized cassette compartment. It is available in stores.
Other models of the same series:
Pictures
Reports
Stereo 5/1992: Good, 1 star, upper middle class, 68 %. In detail: sound 69 %, practicality 80 %, equipment 73 %, price-performance: very good, 10/10 points. Hifi Vision 12/1991: Upper mid-range, satisfactory. Equipment: good - very good
- Audio 8/1992: good, upper class, sound: 65 points. 3 ears.
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