JBL L50A
¥ 99,000 (1 unit, around 1981)
¥ 135,000 (1 unit, around 1980)
Commentary
A uniquely designed speaker system that aims to bring your music to life with crisp sound and precise expression.
A 25 cm cone type woofer, 127H, is used for the low range.
This unit is covered with a glass wool shell (acoustic resistance) at the back to improve low-frequency impedance characteristics.
As for the structure, it uses cone paper with good mass balance, a 10cm-diameter center dome that extends the characteristics up to the mid-range, and a 5cm-diameter voice coil, and is designed with emphasis on basics such as reducing distortion.
LE5-10 of 13 cm cone type skoker is used for the middle area.
It is housed in a completely sealed back cavity, and aluminum is used for the center dome.
A 3.6 cm cone type tweeter LE26 is adopted for the high range, and the center dome and cone paper size are optimized to improve the directional characteristics of the high range.
The magnetic circuit uses a 1.6 cm diameter voice coil and a 15,000 Gauss magnet.
In addition, the outer circumference is wrapped in a resin material with a taper to improve high-frequency energy and directional characteristics.
The network section has level controls for the mid - and high-frequency ranges.
Model Rating
| Method | 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type |
| Units Used | For Low Band : 25 cm Diameter Cone Type (127H) For Middle Range : 13 cm Diameter Cone Type (LE5-10) For High Range : 3.6 cm Diameter Cone Type (LE26) |
| Allowable input | 35W (continuous program) |
| Impedance | 8 Ω |
| Crossover frequency | 800 Hz, 3000 Hz |
| Output sound pressure level | 88dB/W/m |
| External dimensions | Width 362x Height 622x Depth 314 mm |
| Weight | 21 kg (when packed) |