JBL L250Ti
The L250Ti was JBL's flagship home loudspeaker, a large four-way floor-standing system. The company called it a "no compromise" design. HiFI-Stereo (March 1985, p.34) said in its test report that the "Ti" in the name refers to the ribbed titanium diaphragm of the 1-inch dome tweeter. That tweeter was engineered for extended, smooth high-frequency response up to 27,000 Hz on axis. The L250Ti superseded the earlier JBL L250, and the main differences are the tweeter and the upper-midrange drivers.
The driver lineup is two 12-inch pulp-cone woofers, a 5-inch midrange, and the 1-inch titanium-dome tweeter. The system is bass-reflex (vented) and rated at 89dB sensitivity (1W/1m). Nominal impedance is 8 ohms, and the recommended amplifier range is 20-200W. Crossover points are 330Hz, 1kHz, and 3.5kHz. Each speaker measures 1050mm × 380mm × 420mm and weighs 43kg.
Audio (August 1985, p.104) observed that the four-driver 250Ti had an open quality normally associated with planar or dipole speakers, and that the adjustable treble and midrange controls allowed it to be voiced close to other highly regarded designs of the period.
The available record doesn't document production years or original pricing. It also leaves out the driver model numbers, the crossover component details, and the common failure modes.
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