Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:Norway
Release dates:1972 - 1976
Speeds: 1 7/8, 7 1/2
Max Reel Size("): 7"
Number of heads: 4
Dimension: 15¾ x 16 x 7" (400 x 410 x 180mm)
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:(DIN 45511): 7½ ips: 40Hz - 22kHz 3¾ ips: 50Hz - 16kHz 1 ips: 50Hz - 9kHz
Wow and Flutter:7(measured W.R.M.S.): 7½ ips: 0.07%., 3¾ ips: 0.14%. 1 ips: 0.28%
Sound quality rating:7 / 10
Long-term reliability rating: 5 / 10
Weight: 34½ lb (15.7kg)
This was the first three-motor reel tape recorder from Tandberg, and after almost 20 years of the famous
‘joystick’ control, the 9000 series was also the first Tandberg with push-button tape transport functions.
Available in both half and quarter-track versions, the 9000X was a three speed recorder with a frequency response of 30Hz – 22kHz at 7½ ips.
Of course, all the electronics were totally solid-state. Four heads were used, the standard three for erase, record and playback plus a fourth crossfield bias head. Apart from Akai and their American clone Roberts, Tandberg was the only other tape recorder manufacturer to use the crossfield system.
The Series 9000 X was further developed to into the series 9100 X and series 9200 XD. The XD model had Dolby noise reduction.
(9041X quarter-track, 9021X half-track)
Speed tolerance: 1% / Hum and noise: -65dB at 7½ ips / Crosstalk: Mono: 60 dB, Stereo: 50 dB / Distortion: from tape at 0 dB, 400 Hz: 3% / Semi-conductors: 38 transistors, 17 ICs / Rewind speed: 1200 ft reel – 55 seconds. 1800ft reel – 78 seconds / Inputs: microphone: 200ohms, 0.05-100mV, radio: 50K, 5mV-10V line: 1M, 100mV-15V / Outputs: radio: 5K, 0.75 V line: 200ohm, 15V headphones: 8ohm, 5 mW.