5 Technical Data
Tape Speed: 3 ¾ and 7 ½ ips
6/12 pole Hysteresis Synchronous capstan motor,
direct drive
Wow and flutter: ≤ ± 0.1%, at 7 ½ ips peak reading
≤ ± 0.15%, at 3 ¾ ips weighted (DIN 45507)
Tape speed deviation: ≤ 0.3%, from nominal
Max. spool size: 10 ½” (265mm)
Rewind – time: 120s for 3300ft of tape (10 ½” reels)
Frequency Response: 40 – 18 000 c/s at 7 ½ ips +2/-3 db
40 – 12 000 c/s at 3 3/4 ips +2/-3 db
Equalization:
USA /
60 cps:
In accordance with IEC standards
70 µs/3180 µs at 7 ½ ips
140 µs/3180 µs at 3 ¾ ips
In accordance with NAB standards
50 µs/3180 µs at 7 ½ ips
940 µs/3180 µs at 3 ¾ ips
Harmonic distortion:
(overall)
≤ 3% at peak recording level
Signal to noise ration
unweighted:
2-track recorder 55db peak recording level at
4-track recorder 52 db 3% harmonic distortion
Dynamic range: 2-track recorder: 55db at 7 ½ ips
53db at 3 ¾ ips
4-track recorder: 52db at 7 ½ ips
50db at 3 ¾ ips
Crosstalk: Mono 60db
Stereo 40db
Oscillator-bias
frequency:
70 kc/s, push-pull oscillator
Inputs per channel: 1. Microphone 3mV, Ri = 0.5 MΩ max. 600mV
2. Radio /
Tuner 50mV, Ri = 1 MΩ max. 10V
3. Diode /
Aux. 3-50mV, Ri = 47 kΩ adjustable
Outputs: 2 High Impedence outputs, Eout ≥ 0.7V (2-track)
Load resistance not less Eout ≥ 0.5V (4-track)
than 0.1 MΩ
1 loudspeaker output 5Ω, 6W rms. Push-pull
power amplifier, internal speaker may be
switched off.
Tube complement: 4xECC81, 1xECC82, 5xECC83, 2xECL86,
2 Transistors, 5 silicon diodes, 3 selenium
rectifiers
Power line voltage: 110, 125, 145,
220 and 240 V, 50 cps
USA 117 V / 60 cps
Power Requirements: Approx. 120W
Fuses: for 220-240 V : 0.6 A 5 x 20 mm
for 110-145 V : 1.2 A slow blow
USA 117 V : 1.2 A slow blow type 3 AG
Weight: Approx 45 lbs
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