JBL 2212

The JBL 2212 is a 15-inch woofer used in some of the company's best-known consumer speakers - the L26, L36, and the L300. People still hunt for it, both for restoration and for DIY builds. The paper trail is thin, though. There's no confirmed production date range in the record, and no original retail price survives. What exists comes mostly from parts retailers, forum posts, and a spec database that credits a Stereo Review test report for some of its figures.

The core facts hold up across multiple sources. It's a 15-inch driver with a Kevlar-reinforced cone, a foam surround, and a ferrite magnet. The foam surround is the catch. It's notorious for rotting after 15 to 20 years, so any used 2212 needs a careful look. Replacement foam kits are easy to find. Parts-Express lists a 2212H kit at $25, and speakerrepair.com carries both 8-ohm and 16-ohm variants. The 2212H is documented as a replacement driver for the L200, L300, L200B, L300A, 4320, and 4333 systems. Period advertising for the JBL L250 played up the brand's technical sophistication and accuracy (Stereo Review, 1984, p.153).

Beyond that, the specs get murky. The base 2212 is listed with a 3-inch voice coil, while the 2212H uses a 4-inch coil. Reported sensitivity ranges from 92 dB (2.83V/1m) for the base model to 98 dB (1W/1m) for the 2212H as cited from the Stereo Review test report. Frequency response claims conflict too — one source says 30Hz–4kHz, another says 20Hz–3.5kHz for the H variant. Where sources disagree, I'd rather flag the ambiguity than pick a winner. The 2212H does have a complete set of Thiele–Small parameters from Parts-Express: Fs = 22 Hz, Qts = 0.28, Vas = 19.4 liters, Xmax = 5.5 mm, Sd = 545 cm², Re = 5.5 ohms.

The forums add a few things. The 2212A is described as "the same as the 2212 but with a lighter cone" - it goes lower but handles less power. The 2212H is also reported to suffer cone sag after years of gravity, which may mean physically pushing the cone back to center. Owners of L300s with 2212Hs report they "sound fantastic" with plenty of bass and no fatigue. On price, a new 2212H replacement driver runs about $149 from Parts-Express, used pairs of 2212As have sold around $450, and NOS originals can ask $550 or more.

Type: 15-inch woofer, ferrite magnet, Kevlar-reinforced cone, foam surround
Voice coil: 3" (2212) / 4" (2212H)
Impedance: 8 or 16 ohms (variant-dependent)
Used in: JBL L26, L36, L300 (and as replacement for L200, L200B, L300A, 4320, 4333)
Known issue: Foam surround rot; 2212H prone to cone sag