Category:Mid High Fidelity
Country of Manufacture:Czech Republic
Release dates:1959 - 1962
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Stereo - Stacked
Frequency Response:(all 3 dB): 3¾ ips: 50Hz - 12kHz
Wow and Flutter:0.4% at 3¾ ips and 0.6% at 1ips
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
The Sonet Duo was first developed in 1959, a direct derivation of the single speed Sonet. It had two speeds (3¾ and 1 7/8 ips), a digital tape counter and push-button switching of input connections. The biggest criticisms against the Sonet Duo was that it was quite heavy and that it could only handle a maximum reel size of 5″ (eventually addressed with the later Sonet B3). Nevertheless, this machine was still selling well in Europe in 1966.
Audio output power: 1.5 watts / Speaker: 4¾ x 6″ / Weight: 27½ lbs (12.5 kg) / Dimensions: 13¾ x 7½ x 11¼” (349 x 191 x 286 mm) / half-track mono