JBL LX10 (c. 1984–1988)

Name: JBL LX10
Brand: JBL

The LX10 was the smallest bookshelf model in JBL’s mid-1980s LX series, a line built to bring JBL quality to a more affordable price point than the premium L-series. It’s a compact two-way, front-ported reflex design — an 8-inch polypropylene woofer with rubber surround paired with a 1-inch ferrofluid-cooled soft dome tweeter, crossed over at 2,500 Hz. JBL’s spec sheet gives the frequency response as 55 Hz–20 kHz (±3 dB), sensitivity at 89 dB (1W/1m), nominal impedance of 8 ohms, and recommended amplifier power of 10–75 watts. The cabinet is a vinyl-wrapped bookshelf type in black or walnut, with a removable black cloth grille. Dimensions are 16.5 × 10.5 × 9 inches and it weighs 15 lbs.

Production dates are a little fuzzy. Some JBL literature points to a 1984 introduction, other catalog reprints say 1985. Either way, the LX10 was in the lineup through roughly 1988. It sat below the floor-standing LX20, LX30, and LX40 in the series. The LX series brochure also mentions the woofer's Symmetrical Field Geometry (SFG) magnet structure and a 12 dB/octave crossover network, though those details come from a single reproduced source.

Owner accounts are generally positive. The LX10 is frequently described as an excellent imaging small speaker, smooth through the mids, with surprising bass depth for its size. There are recurring complaints, though. The vinyl veneer is cheap and tends to peel at corners. The stock binding posts are small and flimsy. The front port can whistle if the speaker is placed too close to a wall. The most common failure point after three-plus decades is the tweeter: the ferrofluid dries out and turns to sludge, causing sizzle or dead output. Replacement ferrofluid or aftermarket diaphragms are the usual fix. Crossover caps also drift out of spec and are worth replacing. Audio (March 1997, p.85) carried LX10 listings in its classified pages, so these were still circulating in the used market well into the 1990s.

Original MSRP was not found in any authoritative source. On the current secondary market, pairs typically sell in the $230-$400 range depending on condition.