National EAS-20F10/EAS-20F12
¥ 8,000 (1 unit, around 1987)
Commentary
F10 series 20 cm cone type full range unit that adopts original high input resistance and high efficiency design.
The EAS-20F10 is 8 Ω type and the EAS-20F12 is 16 Ω type.
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Model Rating
| Type | 20 cm cone type full range unit |
| Impedance | 8 Ω (EAS-20F10) 16 Ω (EAS-20F12) |
| Fo (lowest resonance frequency) | 40Hz |
| Frequency characteristic | Fo ~ 16 kHz |
| Output sound pressure level | 95dB/W/m |
| Input (Max) | 70W |
| Magnetic flux density | 9,800gauss |
| Total flux | 170,000maxwell |
| Cone Effective Radius | 82mm |
| Mo (equivalent mass) | 12.1g |
| Qo | 0.38 |
| Weight | 2.6kg |