Bozak B-199A

Name: Bozak B-199A
Brand: Bozak

A 12-inch woofer with a 50% wool cone. Bozak built its whole speaker line around it and never stopped bragging about it.

Overview

Bozak's own advertising called it "the famed B-199A." The B-199A is a 12-inch bass speaker with a variable-density cone that is 50% wool. Bozak repeated that detail in its catalog pages for years. The wool softens the cone's behavior and tames the monotonic boom Bozak's ad copy promised to eliminate. Owners who have lived with a pair tend to describe the bass as full and articulate rather than punchy.

The specs that survive in the period literature are modest. Response is rated at 40 to 4,500 Hz, with impedance available in either 8 ohm or 16 ohm versions. That's a narrow upper reach for a woofer, but it's intentional. The B-199A was never meant to carry the midband alone. It was designed to hand off to a midrange like the B-209B, and the crossovers in Bozak's systems were built around that division of labor. The 16-ohm variant mattered because it let Bozak wire multiple B-199As in parallel in its larger systems without dragging the load down to something amplifiers of the day couldn't handle comfortably. The B-310, for instance, used four of them.

Where the B-199A sat in the Bozak lineup is the interesting part. The same bass driver that anchored the Concert Grand, the flagship, was also the bass unit in systems as small as the Tempo II. Bozak's "building block" philosophy meant a buyer could start with a single B-199A and a tweeter pair, add another bass and another tweeter pair, then add a midrange and crossover, and keep going until they had a fourteen-speaker array. The B-199A was the foundation of that scheme, and it stayed in the catalog long enough to appear in system literature from the mid-1950s through at least the late 1960s. High-Fidelity (April 1969, p.87) ran the driver in a full component spread alongside the B-209B midrange and B-200Y treble pair. It described the family as re-creating all music precisely, the same phrase Bozak used in its own ads.

The B-199A is less a standalone component than the load-bearing part of a system. Pull one out of a Bozak system and you have a 12-inch woofer with a wool-blend cone and a 4,500 Hz ceiling. Leave it in its cabinet, wired to a B-209B and a pair of B-200Ys, and you have the bottom end of a system that Bozak sold on the strength of its bass foundation. Collectors chasing the Bozak sound generally want the whole system, or at least the woofer paired with the correct midrange. A lone B-199A is a good driver looking for a job.

The 8-ohm and 16-ohm availability is the practical wrinkle. Buyers hunting a replacement or a spare need to know which version they're getting, because dropping a 16-ohm unit into a system wired for 8-ohm drivers will change the load and the level in ways the original crossover didn't anticipate. That detail doesn't show up in a casual listing and causes headaches later. The variable-density wool cone is also the reason survivors are worth inspecting closely. A cone that's been pushed hard or stored badly tells you more about a unit's history than the frame will.

Bozak's confidence in the B-199A was absolute, and the ad copy is almost comical in its certainty: among all woofers it stands supreme, each tone clear and distinct, virtually indestructible in normal use. That last claim has held up reasonably well — these drivers turn up decades later still working — but "normal use" is doing a lot of work in that sentence. The B-199A was built to be driven within the power limits of the systems it lived in, and Bozak's three-way designs were rated conservatively. Treat it as a woofer with a 4,500 Hz ceiling and a wool cone that rewards gentle handling, and it will do what it was designed to do: lay a natural, unexaggerated foundation under everything above it.