Yamaha TX-816
Listed under Moog, but every period document that names it puts a Yamaha badge on the front panel.
Overview
First, a correction: the TX-816 is not a Moog product. The fact sheet supplied for this page contains no verified facts - the research section was empty - and the only source documents that name this model are studio equipment listings and a reader's letter from Recording Engineer. All of them place the TX-816 in Yamaha's FM rack line, alongside the DX-7. It shows up in a New York facility's computer-based synthesizer area next to an Oberheim Matrix-12, an OB-8, an Emulator II, a Prophet V and a Minimoog. It shows up in a Berkeley studio's instrument list with a DX-7, an OB-Xa and a Matrix 12. It shows up three racks deep in a Dallas electronic music studio. In every one of those listings, it's a Yamaha. The Moog attribution on this page is an error in the archive's cataloguing, and any listing that calls this a Moog should be treated with suspicion.
What the period documents do establish is how the TX-816 was used. It was a rack-mounted FM synth module. At Composer's Services, it sat in a rack with a DX-7 and an Apple IIe dedicated to patch editing and librarian work, with Yamaha's DX-Pro software handling the file management and OpCode software backing it up. The same studio kept a Casio CZ-101 on the same stand, used specifically to thicken and fatten the DX-7/TX-816 patches. It was a workhorse module that studios stacked and layered, not a showpiece.
The Recording Engineer reader's letter from Phil Peters at Delta Stage Lighting in Mobile, Alabama, is the most useful single document in the set. It describes the TX-816 in an actual working rig: two Ensoniq Mirage samplers, a Yamaha KX-88 controller, a TX-816 rack and a QX-1 sequencer, all driven over MIDI. Peters' complaint in that letter is about the Mirage, not the TX-816 - the samplers wouldn't respond to MIDI volume commands. Still, the TX-816 sits in the middle of that chain, controlled from an 88-key weighted controller, so it slotted into MIDI rigs as a straightforward tone generator. You bought the keyboard once and added sound sources as the budget allowed.
Two of the magazine chunks that name the TX-816 are studio equipment inventories rather than reviews. One listing pairs it with a QX-1 digital sequencer and an RX-11 drum machine in a Michael McDonald session rig. Another places two TX-816s in Hans Zimmer's keyboard arsenal alongside three Roland Super Jupiters, a Roland MKS-20, an MKS-70, a D550, a System 700, a MIDI-Moog and a Korg M1. A third listing, from a 1987 DB-Magazine studio profile, has the TX-816 racked with a QX-1 and an RX-11 in a full commercial facility. None of these are reviews. There is no proper review in the source material, so evidence of adoption is what the page has.
The one piece of editorial judgement in the whole set comes from Mix (July 1987, p.167), in a piece about Dallas studio culture that quotes Downtown Sound's Jonathan Cluts on the ubiquity of the DX-7. His observation was that you hardly had a studio business without one, whether or not you were doing electronic music. The TX-816 is the rack version of that same FM engine. If the DX-7 was the keyboard every room needed, the TX-816 was how you multiplied it without buying another keyboard. That's why there are three of them at Appletree Sound in Dallas, and two in Zimmer's rig.
The archive cannot tell you almost everything else. There are no production years in the source material. There is no original price. There is no polyphony figure, no voice architecture, no output configuration, no power requirement, no dimensions, no weight. There is no independent review with measurements. There is no collector pricing, no known failure modes, no parts availability information. This page exists to correct a catalogue error and to record where the TX-816 appears in the period literature. It is not a buyer's guide, because the source material doesn't support one.
The documents give a modest practical picture for anyone with one of these in a rack. It was used with the QX-1 sequencer and the RX-11 drum machine as a matched set. It was edited and managed from a computer via Yamaha's own librarian software. It was routinely layered with other synths - a CZ-101 in one documented case - to fill out its patches. The KX-88 was a common controller for it. Those are the workflows the period sources describe.
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