JBL T550
The JBL T550 is a compact three-way bookshelf loudspeaker from JBL's consumer line, built around a bass-reflex enclosure. It pairs an 8-inch polymer-laminate cone woofer with a 4-inch polymer-laminate cone midrange and a 1-inch titanium-laminate dome tweeter, with crossover points at 1.5kHz and 3.5kHz. It's rated at 8 ohms nominal impedance, with a frequency response of 50Hz to 22kHz and sensitivity of 87dB at 2.83 volts/1 meter. Power handling is listed at 20–100 watts. The cabinet measures 15.5" × 9.8" × 11.5" and weighs 14 pounds.
Documentation on the T550 is thin — no production years, original pricing, or cabinet construction details have surfaced in the available record. What we do have is a brief period assessment: Audio (September 1986, p.126) covered the model in its test-record section, and the general reception noted the T550 delivers a balanced, open sound with good imaging for its price class, though high frequencies can come across slightly bright on some recordings. That's about the extent of the surviving written record.
Known specifications:
- Type: 3-way, bass-reflex
- LF driver: 8" polymer-laminate cone
- MF driver: 4" polymer-laminate cone
- HF driver: 1" titanium-laminate dome
- Crossover: 1.5kHz / 3.5kHz
- Impedance: 8 ohms
- Sensitivity: 87dB @ 2.83V/1m
- Frequency response: 50Hz – 22kHz
- Power rating: 20–100 watts
- Dimensions (H×W×D): 15.5" × 9.8" × 11.5"
- Weight: 14.0 lbs.
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