JBL 8120H
Price unknown (1 unit, around 1983?)
Commentary
8000 series 20 cm cone type full range speaker.
The 8000 Series is a high-efficiency speaker series developed for broadcasting, BGM and other distributed sound systems. It features high intelligibility, wide directivity and high input resistance.
Model Rating
Type | 20 cm cone type full range unit |
Impedance | 8 Ω |
Allowable input (continuous program) | 30W |
Sound pressure level | 96dB/W/m |
Frequency characteristic | 100 Hz to 10 kHz ± 4 dB |
Voice Coil Diameter x Length | 19x4.8mm |
Magnetic flux density | 10,000gauss |
Effective mass | 6.6g |
External dimensions | Diameter 205x Depth 70 mm |
Weight | 0.65kg |
Thiele-Small Parameters | |
fs | 95Hz |
Re | 7.2 Ω |
Qts | 1.57 |
Qms | 8.0 |
Qes | 1.96 |
Vas | 27L |
SD | 0.021m2 |
Xmax | 2.5mm |
VD | 52.5cm2 |
Le | 0.2mH |
Η0(Half space) | 1.1% |
Pe(max) (continuous sine wave input) | 15W |