National EAS-45D200
¥ 28,000 (1 unit, around 1987)
Commentary
Wide range driver unit with linear phase equalizer.
Using precision machining technology, the linear phase equalizer is constructed so that each of the five slits draws a calculated curved section, thereby equalizing the length of the sound path from the diaphragm to the horn throat and eliminating phase disturbances.
Moreover, by making the aperture ratio of the slit linear, we have achieved broadband and flat frequency characteristics.
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Model Rating
| Type | Driver unit |
| Impedance | 8 Ω |
| Frequency characteristic | 500 Hz ~ 20 kHz (When Using EAS-50H100) |
| Recommended crossover frequency | 700 Hz or more |
| Output sound pressure level | 104dB/W/m (when using EAS-50H100) |
| Input (Max) | 150W (when using EAN-20N100) |
| Throat diameter | Φ 25.4 mm |
| Magnetic flux density | 15,000gauss |
| Total flux | 120,000maxwell |
| Weight | 1.8kg |