Dahlquist MK-11B
An elusive nameplate that turns up in the strangest places — and almost never in Dahlquist's own catalog.
Overview
Here is the uncomfortable truth about the Dahlquist MK-11B: after decades of chasing Dahlquist paper and a full sweep of the available research, there is no confirmed record that Dahlquist ever built a product by that name. The company's documented lineup runs through the DQ-10, DQ-12, DQ-20, and DQM-9, and the MK-11B appears in none of it. That absence is the story, and it is worth telling straight rather than dressing up with guesswork.
What makes the MK-11B name linger is that it does surface — just not as a Dahlquist. In period advertising from 1975, the "MK11B" designation shows up attached to a completely different product: the Dayton-Wright XG-8 MK11B, a loudspeaker listed alongside the Dahlquist DQ-10 in dealer roundups that ran in Audio during 1975. Those "Components for the Connoisseur" advertisements, placed by dealers such as Paul Heath Audio of Rochester, New York, grouped the Dahlquist DQ-10 and the Dayton-Wright XG-8 MK11B together as high-end offerings for serious listeners. The shared "MK11B" suffix is almost certainly where the confusion begins — a model number that belongs to Dayton-Wright's electrostatic, not to anything wearing the Dahlquist badge. Collectors chasing a "Dahlquist MK-11B" are, in all likelihood, chasing a transcription error that has been copied forward for fifty years.
It is worth being precise about what the period sources actually say. The 1975 dealer listings consistently pair "Dahlquist DQ10" (occasionally mangled by the typesetter into "D010" or "0010") with "Dayton-Wright XG-8 MK11B" as two separate line items. No chunk, no catalog, and no manufacturer document places an MK-11B under the Dahlquist name. The brand itself was founded in 1972 in Hauppauge, New York, by Jon Dahlquist and Saul Marantz, and operated on a time-alignment design philosophy until the company folded in the late 1980s — but nothing in that history references an MK-series product, and no lineage should be inferred from it.
For the collector, the practical takeaway is this: if a piece of gear is offered as a "Dahlquist MK-11B," treat the nameplate with suspicion until the actual cabinet, driver complement, and crossover are documented. The odds strongly favor either a mislabeled Dayton-Wright XG-8 MK11B or a seller repeating a name that never existed in the Dahlquist catalog. That is not a satisfying answer for someone who wants a spec sheet and a production run, but it is the honest one. The archive would rather record a documented absence than invent a speaker to fill the gap.
Until genuine Dahlquist documentation for an MK-11B surfaces — a brochure, a service manual, a review that names the model under the Dahlquist banner — the responsible entry is a caution, not a celebration. The name is real; the Dahlquist attribution is not.
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