Tandberg 11
Little is documented about the Tandberg Model 11. What the record shows comes from a couple of brief trade announcements and a single New Products roundup. It was a solid-state, battery-operated portable reel-to-reel recorder that Tandberg aimed at professional users. It was compact, handled 7-inch reels and weighed about ten pounds. High Fidelity (February 1968, p.40) added that it was a three-head machine.
Past those facts, the record thins out. The same HiFI-Stereo piece cited a frequency accuracy of ±3% between 100 Hz and 1 MHz, output flat within ±1 dB up to 1 MHz, and less than 0.25% distortion across the audio range. Those numbers come from a poorly OCR'd chunk, so treat them as suggestive rather than confirmed specs. No production years, no later reviews and no service literature seem to survive in the usual channels. The Model 11 appears to have been a short-run or low-volume professional portable, possibly overshadowed by Tandberg's more famous consumer decks like the Series 6 and Series 10.
Known specs at a glance:
- Three speeds: 1⅞, 3¾, 7½ ips
- Three-head design (erase, record, playback)
- Reel capacity: 7-inch
- Power: D cells or rechargeable Nicad batteries
- Weight: ~10 lbs
- Configurations: half-track or full-track
- Built-in mixer
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