Nakamichi CM-50
A tape-sync brain for studios that needed machines to line up to a fraction of a frame — not a microphone, and not a cassette deck.
Overview
Search for "Nakamichi CM-50" and half the hits will sell you a small-diaphragm condenser mic or a piece of 1-inch multitrack tape. Neither is this. The CM-50 that belongs in the Nakamichi story is a studio timing and control device — a synchroniser/autolocator companion to the company's CM250 synchroniser and Spin Time tape timer, built for facilities where tape transports had to be chased and cued with frame-level accuracy.
The clearest description of the family comes from a period trade advertisement in Studio Sound (January 1987, p.3), which grouped the CM250 synchroniser, the CM50 autolocator, and the Spin Time tape timer under a single "precision timing" banner. The copy stressed that the products were dedicated not just to the timing of audio and video but to controlling tape transports with precision — "often with accuracy to a fraction of a frame" — and that the company's experience covered the all-important knowledge of audio and video machine interfaces. That is the CM-50's reason for existing: it was the human-facing control layer in a synchronisation chain, the box an engineer punched to park a multitrack at a specific timecode and let the machine chase.
Context matters here. By the mid-to-late 1980s, British and European studios were drowning in secondhand 24-track machines — Studer A80s and A800s, Otari MTR-90s, 3M M79s — and the resale listings of the era show those decks moving with synchroniser gear attached. A 1987 Studio Sound classifieds column (January 1987) even lists a 3M M79/24-track package bundled with an "Applied Multisystems CM 50," which tells you two useful things: the CM-50 was real enough to appear in working studio inventories, and it was sold and traded as part of a synchronisation system rather than as a standalone curiosity. A 1989 Studio Sound listing (August 1989) shows a 3M M79 offered with "CM50" in the same breath as the deck itself. Collectors chasing a CM-50 today are usually chasing it because they already own the tape machine it was meant to drive.
What the CM-50 is not is a consumer product, and that shapes everything about how one turns up now. It is rack-oriented studio infrastructure, it lives or dies by its interface cabling, and its usefulness is inseparable from the transports and synchroniser it was configured to talk to. The documentation that survives is trade-press advertising and studio classifieds rather than the sort of full lab review a cassette deck or a tonearm would have earned — so hard specifications, pricing, and production dates are thin. What can be said with confidence is the role: the CM-50 was the autolocator half of a Nakamichi timing system whose selling point, per the company's own trade advertising, was frame-fraction transport control and broad machine-interface knowledge.
For the collector, the honest framing is this: the CM-50 is a piece of the synchronisation puzzle, not a showpiece. It rewards the owner who has the matching tape transport and the patience to sort out its interfaces, and it will frustrate anyone hoping for a plug-and-play box. Owners and studio veterans who remember these systems speak of them in the same breath as the decks they cued — which is exactly the right way to think about a device whose entire job was to make other machines behave.
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