JBL Ti10K (1998–2002)

The JBL Ti10K was the flagship of JBL's Ti series, a four-way, five-driver bass-reflex floorstanding speaker released in Japan in 1999 at ¥450,000 per unit. The enclosure is tall and rounded, with a gently sloped front baffle and curved side panels, so there are no parallel surfaces at all. JBL said this reduced internal standing waves and cut the need for sound-absorbing material. The front baffle is 25mm MDF. The curved sides build up from six layers of MDF plus two plate layers. A die-cast tapered flange around the bass reflex port smooths airflow.

The driver lineup is unusual and ambitious. The low end uses two 20cm cone woofers (model 808J) in a double-woofer arrangement, chosen to improve sound pressure level and power handling. Each woofer has an injection-molded edge integrally molded with a polypropylene cone, an SFG magnetic circuit with an edgewise-wound flat wire voice coil, and a T-shaped ventilated pole piece for heat dissipation. A 16.5cm cone mid-low driver (806G-1) handles the lower mids with a polypropylene-coated diaphragm and a 50mm voice coil. The mid-high range goes to a 10cm pure titanium inverted dome (804 ti) with a 37mm voice coil, balanced drive system, and a neodymium magnet in a magnetically shielded inner-magnet structure. At the top sits a 2.5cm pure titanium dome tweeter (Ti025K) with an aluminum voice coil, rated to extend beyond 30 kHz.

The network is independent for each band. It uses large low-DC-resistance coils, high-quality capacitors, glass-epoxy boards, and low-loss internal wiring. Gold-plated input terminals sit at the bottom of the enclosure, wired directly to the network. An optional gold-plated bus bar lets you extend them for bi-wiring or multi-amplifier setups. Three-point pinpoint cleats and rubber feet are included. Two finishes were offered: beach wood grain and semi-gloss black. Each speaker weighs 51kg and stands 1,290mm tall. Rated sensitivity is 91dB/2.83V/m, impedance is 6 ohms, and IEC power handling is 200W.

The record on the Ti10K is thin beyond the spec sheet. One reference source gives production dates as 1998-2002, though JBL's own documentation is not clear on exact years. Enthusiast reports are uniformly positive. Owners call them "nothing short of amazing" and "legendary," and a pair in glossy black with original boxes recently surfaced on the used market. One owner on Audiocircle noted that after years of under-powering his pair, they needed restoration, which suggests the woofers may be sensitive to insufficient amplification. A thread on audioheritage.org flags a discrepancy between the crossover frequencies on the data sheet and those in the speaker manual and brochure. The specific values in dispute aren't documented. There's also a request thread for crossover layouts, with a "Ti10k ts.pdf" file referenced.

The Ti10K is closely related to the Ti5000, and forum discussion suggests the two share design characteristics. A family of Ti models - Ti1K, Ti2K, Ti6K, Ti10K - was sold, with the Ti10K at the top.

• Type: 4-way, 5-speaker bass-reflex floorstanding system
• Drivers: 20cm cone (808J) ×2, 16.5cm cone (806G-1), 10cm titanium dome (804 ti), 2.5cm titanium dome (Ti025K)
• Frequency response: 30 Hz – 30 kHz
• Sensitivity: 91 dB / 2.83V/m
• Impedance: 6 ohms
• Power handling: 200W (IEC)
• Dimensions: 410W × 1,290H × 570D mm
• Weight: 51.0 kg
• Original price: ¥450,000 (each, 1999)

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