Tandberg Model 12
The Tandberg Model 12 is a fully transistorised four-track stereo reel-to-reel recorder with built-in side-facing speakers and power amplifiers. It is an all-in-one home music machine from the mid-1960s. Studio Sound (November 1967, p.51) reviewed it as exactly that: a self-contained unit with 10W per channel output at 5% distortion. Wow-and-flutter is 0.15%, 0.2%, and 0.3% at 7½, 3¾, and 1⅞ ips respectively.
High Fidelity (September 1967, p.79) described it as a clean-sounding general-purpose stereo playback system. It also noted that Tandberg offered an optional omnidirectional dynamic microphone with detachable stand (Model TM4, $37.95). Separate speaker systems started at $49.50 and could be added to the built-in speakers. The same review gave lab test data, but the specific measurements are not preserved in surviving excerpts.
Collector sources describe it as "a simple and yet fairly high performance stereo recorder" - a Norwegian machine from the era when Tandberg was building its reputation for quality equipment. It uses three heads (erase, record, playback) and a single recording amplifier spread across two small PCBs at the back. Playback quality is reportedly very good, with excellent channel separation and low noise. The 7½ ips performance with good pre-recorded tapes is commendable. One reviewer noted that the unit responds well to a good external amplifier and speakers, on which the output is "surprisingly powerful."
Two different power figures circulate. The hifiengine database lists 12W output per channel, while prose in the vintage-audio-lovers review mentions 8-10W. The Studio Sound spec from 1967 states 10W per channel at 5% distortion. The period review is the closest thing to a manufacturer specification, so 10W per channel appears to be the rated figure.
Signal-to-noise is cited as better than 60 dB at 7½ ips. Tape speeds are 3¾ and 7½ ips.
Like any Tandberg reel machine of this vintage, it typically needs restoration. Belts, rubber idler wheels, and mechanical parts are common failure points after decades. Electrolytic capacitor replacement in the preamp/amplifier section is normally necessary. Recapping the amplifier section is considered a worthwhile improvement.
No exact production years, original retail price, weight, or dimensions are documented. Current collector pricing sits around €150-250 / $150-250 in good condition.
Known specifications:
- Type: 4-track stereo reel-to-reel recorder with built-in speakers and amplifiers
- Tape speeds: 3¾ and 7½ ips
- Heads: 3 (erase, record, playback)
- Output power: 10W per channel (per Studio Sound, 1967); 12W per hifiengine listing
- Signal-to-noise: better than 60 dB at 7½ ips
- Wow and flutter: 0.15% (7½ ips), 0.2% (3¾ ips), 0.3% (1⅞ ips) per Studio Sound
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