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:

• RS-B626
• RS-B727
• RS-B828

Pictures

Links

[video rewiev]</->