Technics RS – M253X

Repair Maintenance

Japan 1983

4 tracks 2 stereo channel
3 heads
2 Engines
Velocìtà 4,76 cm/s
Wow e flutter 0,04% wrms
Frequency response ± 3dB 30Hz - 19kHz Metal
Frequency response ± 3dB 30Hz - 18kHz CrO2
Frequency Response ± 3dB 30Hz - 17kHz Normal
Dynamic range 110 dB with dbx
Signal to noise ratio no Dolby 60 dB
Dolby B signal to noise ratio 70 dB
Dolby C signal to noise ratio 78 dB
Rewind time from 90 sec for C60
Line input sensitivity 60 mV 47 kOhms
Mic input sensitivity 0.25 mV 10 kOhms
Line output level 400 mV 3.5 kOhms
Headphone output 125 mV 8 Ohms
Bias frequency 85 kHz