JBL TL600 (1980s)

The JBL TL600 is a two-way loudspeaker from the company's TL series. JBL promoted the line in the mid-1980s as bringing its professional studio pedigree to home audio. Period ads in Audio (June 1986, p.121) and HiFI-Stereo (July 1987, p.93) said the same engineering behind JBL's pro monitors now went into car and home speakers. The TL series woofers use a mineral-filled polypropylene cone meant to stay stable in hostile environments.

The specs that survive agree across JBL's own documentation. The TL600 pairs a single 10" woofer with a 1" dome tweeter cooled with low-viscosity ferro-fluid. The crossover point is 2600 Hz. Sensitivity is rated at 88 dB (1 watt at 1 meter), and recommended amplifier power is 10-100 watts. Claimed frequency response is 45 Hz to 20 kHz (-6 dB). Nominal impedance is 8 ohms. The cabinet measures 61.9 cm high by 30.5 cm wide by 28 cm deep and weighs 45 lbs (20.4 kg).

The record is thin beyond that. JBL's own product page calls it a floor-standing speaker, while the manualslib listing says bookshelf. The available documentation doesn't settle it. No original retail price has surfaced, and neither have production years beyond "1980s" or period reviews with measurements. What is clear is that the TL600 was part of a broader TL series JBL was actively advertising in 1986-87, positioned as a compact, professional-grade option for the home.