Country of Manufacture:Norway
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Voltage(s): 110-120v, 220-240v
Frequency Response:(all 3 dB): 7½ ips: 40Hz - 16kHz
Wow and Flutter:<0.15 % at 7½ ips . <0.2 % at 3¾ ips and <0.8 at 1 ips
Signal-to-Noise Ratio:55 dB below highest recording level (4% distortion)
Sound quality rating:7 / 10
Long-term reliability rating: 7/ 10
Although first made in 1958, this model was not released in Britain until 1962.
It was a three speed, half-track mono machine containing two audio amplifiers,
the second being for the playback of stereo tapes even though it could only record in mono.
The Model 3B did not have this facility and was a mono half-track record
and playback machine.
The quality of sound reproduction of the Model 3B was said to compare
favourably to the four-track series 6 although this machine was, due to
its age, quite a bit less expensive.
Total harmonic distortion: less than 4% / Bias frequency: 67kHz / Rewind speed: 2 minutes / Dimensions: 15 x 11½ x 6½” (381 x 292 x 165 mm) / Weight: 22 lb in mahogany cabinet, 27lbs with carrying case (10 kg / 12.3 kg) / half-track mono