Akai GX-F90

Repair

Japan 1979

4 tracks 2 stereo channel
3 heads
2 Engines
Velocirìtà 4,75 cm/s ±0,5%
Wow e flutter 0,03% wrms
Frequency Response: ± 3dB (-20VU) 25Hz - 15kHz LN tape
Frequency Response: ± 3dB (-20VU) 25Hz - 17kHz LH tape
Frequency Response: ± 3dB (-20VU) 25Hz - 17.5kHz CrO2
Frequency Response: ± 3dB (0VU) 25Hz - 9kHz CrO2
Frequency Response: ± 3dB (-20VU) 25Hz - 21kHz Metal
Frequency Response: ± 3dB (0VU) 25Hz - 13kHz Metal
Harmonic distortion 0.8% LN tape
Harmonic distortion 0.8% LN tape
Harmonic distortion 0.7% CrO2
Harmonic distortion 0.6% Metal
Signal to noise ratio (no Dolby) 58 dB LN tape
Signal to noise ratio (no Dolby) 60 dB LN tape
Signal to noise ratio (no Dolby) 61 dB CrO2
Signal to noise ratio (no Dolby) 62 dB Metal
70 dB cancellation
100 kHz bias frequency
Line input sensitivity 70 mV 100 kOhms
Mic input sensitivity 0.25 mV 10 kOhms
Din input sensitivity 2 mV 4.7 kOhms
Line output level 300 mV 20 kOhms