JBL TLX150 (1994)
The JBL TLX150 is a 3-way bookshelf speaker from JBL's TLX series. It came out in 1994 at ¥40,000 per unit. It's a bass reflex design with the port on the rear baffle, which JBL said helped eliminate muddy low-midrange sound. The speaker terminals sit at the bottom of the rear baffle, so cable runs stay short and tidy.
The drivers are a 21 cm cone woofer, a 10 cm cone midrange, and a 2.5 cm dome tweeter. The woofer diaphragm is a high-rigidity paper pulp and corn paper, used to suppress split vibration. The midrange has a light paper-laminated cone for smooth response. The tweeter is a titanium-laminated soft dome, an attempt to get the extended top end of titanium while keeping the softer dome's consistency with the lower drivers. The enclosure has a calm, furniture-grade finish.
Specs: frequency response rated 50 Hz to 25 kHz (one listing also notes 60 Hz to 20 kHz at −6 dB), output sound pressure level 90 dB/2.83V/m, nominal impedance 4 Ω, recommended amplifier power 10W–100W, and crossover points at 600 Hz and 3 kHz. Dimensions are 250 × 530 × 250 mm (W×H×D), weight 9.5 kg.
The record is thin beyond the basics. There are no period reviews, no production timeline details past the 1994 release, and no clear sense of where the TLX150 sat in the TLX lineup. From the aftermarket, replacement foam surrounds are available for the woofer, which suggests the usual foam-rot issue for drivers of this era. Used pairs have appeared at around €150 in Europe and NT$5,000 in Taiwan.
- Type: 3-way, 3-speaker, bass reflex, bookshelf
- Drivers: 21 cm cone woofer, 10 cm cone midrange, 2.5 cm dome tweeter
- Frequency response: 50 Hz – 25 kHz
- Sensitivity: 90 dB/2.83V/m
- Impedance: 4 Ω
- Crossover: 600 Hz, 3 kHz
- Dimensions: 250 × 530 × 250 mm (W×H×D)
- Weight: 9.5 kg
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