Country of Manufacture:Norway
Release dates:1968 - 1971
Speeds: 7 1/2, 3 3/4, 1 7/8
Max Reel Size("): 7
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:(all 3 dB): 7½ ips: 40Hz - 16kHz
Wow and Flutter:0.15% at 7½ ips. 0.25% at 3¾ ips. 0.4% at 1 ips
Signal-to-Noise Ratio:55 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
Specially developed for
professional, portable use, the battery-powered series 11 was a three-speed
half or full-track recorder.
Electronic speed control meant speed stability within 0.5%
regardless of the position of the recorder.
All operational facilities were positioned conveniently on the front
panel. Separate volume controls for microphone and line inputs allowed
mixing and outputs were provided for line and monitor.
The edge-type VU meter was peak reading and could be used to check battery
Other features included servo braking, an internal 2″ x 3″
monitor speaker, balanced 200 ohm mic input and separate record and playback
heads which enabled true A/B monitoring in the field.
Total harmonic distortion: maximum 3% from tape at 0 dB recording level / Semi-conductors: 49 / Rewind speed: 3 minutes for 900 ft (300 m) reel of LP tape / Audio output power: 0.25 watts continuous into 20 ohm load / Inputs: microphone: balanced, sensitivity 0.1mV. 50 mV max at 400Hz Low: Impedance 10 Kohm, sens 5 mV, 1 V max at 400Hz High: Impedance 200 Kohm, sens 125 mV, 10 V max at 400Hz / Outputs: line: 200 ohm / 1.55 V monitor: for headphones with minimum impedance of 100 ohms / Speaker(s): 2 x 3 inch, 20 ohms / Power requirements: 10 x 1.5V batteries (AC operation is possible using an additional battery eliminator) / Dimensions: 13 x 10 x 4″ (330 x 255 x 100 mm) / Weight: 11½ lbs (5.25 kg) / half or full track mono