Audio Database

7D70
Commentary

A stereo tape deck with built-in all-transistor recording and playback amplifiers.

High-bias frequencies of 90 kHz enable FM stereo broadcast transmission recording.

Automatic tape stopping device and temporary stopping device are installed.

You can mix left and right recordings separately.

Equipped with DIN connector and level meter.

It supports 3 speeds.

Model Rating
Type Tape deck
Track format 4-track, 2-channel
Tape speed 19cm/s, 9.5cm/s, 4.8cm/s
Maximum reel used No. 7
Recording system AC bias system
Erasing method AC erasing system
Recording time 4.8cm/s : 4 hours round trip (stereo)
Fast forward / rewind time Within 3 minutes and 30 seconds (when using No. 7)
Wow and flutter 19cm/s : not more than 0.15% rms
9.5cm/s : not more than 0.25 per cent rms
4.8cm/s : 0.3% or less
Frequency characteristic 19cm/s : 30 Hz to 20 kHz
9.5cm/s : 30 Hz to 13 kHz
4.8cm/s : 30 Hz to 7 kHz
Signal-to-noise ratio 50dB
Input terminal Mic : -66dBm (10k Ω)
Pre amp : -20dBm (100k Ω)
Din : -40dBm (10k Ω)
Output terminal Pre amp : -20dBm (0.774V/2k Ω)
Din : -20dBm (100k Ω)
Power supply voltage AV100V, 50Hz/60Hz
External dimensions Width 394x Height 374x Depth 196 mm
Weight 10kg