National EAS-16F20
¥ 6,500 (1 unit, around 1987)
Commentary
16 cm full-range unit of F20 series that pursued wide and flat frequency characteristics and increased perfection as a full-range.
The pole piece with a pure copper short ring and the dome diaphragm directly connected to the voice coil provide a clear mid-high range.
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Model Rating
| Type | 16 cm cone type full range unit |
| Impedance | 8 Ω |
| Fo (lowest resonance frequency) | 35Hz |
| Frequency characteristic | Fo ~ 20 kHz |
| Output sound pressure level | 93dB/W/m |
| Input (Max) | 70W |
| Magnetic flux density | 13,000gauss |
| Total flux | 137,000maxwell |
| Cone Effective Radius | 64mm |
| Mo (equivalent mass) | 7.6g |
| Qo | 0.22 |
| Weight | 2.0kg |