Technics RS-BX 727

General

  • Manufacturer: Technics
  • Model: RS-BX727
  • Type: three-head stereo cassette deck with rear band control
  • Year of manufacture: 1992
  • Made in: Osaka, Japan
  • Color: Black
  • Remote control: Yes
  • Remote control: Yes
  • Power consumption: 20 W
  • Dimensions: Width 430 mm, Height 135 mm, Depth 300 mm.
  • Weight: 5,00 kg
  • New price approx.: 649, - DM

Connections

Inputs:

  • CD Direct In: No
  • Line In: 2xCinch, 60 mV/47 kOhm

Outputs:

  • Headphone: 6,3mm jack, gold plated, 125 mV/8 Ohm (8 Ohm ~ 600 Ohm)
  • Line Out: 2xCinch, 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: 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
  • Dolby HX PRO: Dolby B, Dolby C
  • MPX Filter: yes
  • Fader: No
  • Pitch control: No
  • CD Direct Recording: No

Special features

  • TNRC (Technics Non-Resonant Compound) -> special base plate to absorb vibrations
  • Quartz controlled digital servo direct drive motor
  • Three-head assembly with audio head coils made of high-purity PC-OCC copper.
  • Linear Magne Field Class AA system
  • Two separate Dolby circuits
  • Dolby HX Pro
  • APRS ("Advanced Precise Rec-Level System")
  • TPS - Title Search
  • Logic control with two motors
  • Memory Stop, Repeat Function<->AB up to 16x
  • Motorized cassette compartment
  • Linear FL tape counter/play time display
  • FL peak level display for two ranges
  • Rec. level function (APRS), used for better leveling only
  • Rec. calibration generator (400Hz/10kHz)
  • Bias and recording level calibration
  • Remote control via Technics amplifier (SU-VX720/VX620)

Remarks

  • The drive is without belt. There is a permanent magnet attached to the capstan flywheel, which is driven by an electromagnetic field.
  • RS-BX727 -> this unit has an IR receiver. The RS-BX727 was released in October 1992 and replaced the RS-BX707.

Occurring errors:

  • No sound, no recording:C619, C620, C621, C622 & C624 -> replace 1000uF-10V
  • Permanent magnet on capstan can come 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
  • Clay leaks: Spring of pressure roller gives way. Item no. 120-1/ ET. No. RUW140ZC -> no longer available

For your consideration

  • Due to age, the plastic elements in the drive become increasingly brittle and break, the pinions of the rewind motor burst open and slip off => irreparable.


Other models of the same series:

Pictures

Rsbx727a.jpg

Links

[video rewiev]</->