TAD TD-4003
¥ 330,000 (around 1999)
¥ 460,000 (around 2005)
Commentary
A compression driver equipped with an aluminum annular slit on a phasing plug that prevents phase disturbance of sound waves.
The diaphragm uses 10 cm diameter pure beryllium, an ultra-lightweight and highly rigid material made by vacuum evaporation technology.
In addition to excellent conversion efficiency in the high-frequency range, the edge portion is made of beryllium that is integrated with the dome portion, enabling wide-range playback with an extremely wide bandwidth for this diameter driver.
By adopting a rear compression system, the effect of edge resonance is reduced. Furthermore, air gap resonance in the edge and inside the magnetic circuit is analyzed and improved to realize more natural sound quality.
The throat diameter is set to 39 mm in consideration of diffusion in the high frequency range.
A neodymium magnet is used for the magnetic circuit to achieve a 20,000 gauss magnetic flux density and a 1.5 inch (approximately 39 mm) throat.
The direct power supply terminal reduces the influence of internal AC magnetic flux and sound pressure.
.JPG)
Model Rating
| Type | Driver unit |
| Voice coil impedance | 16 Ω |
| Voice coil diameter | 101mm |
| Phasing plug | 5 Double Slit Rear Type |
| Playback frequency band | 600 Hz to 20 kHz |
| Max Input | 60W (600 Hz, -12dB/oct.) |
| Output sound pressure level | 112dB/W/m (with 80 ゜ x30 ゜ horn) |
| Crossover frequency | 600 Hz or More (Cutoff Characteristic 12dB/oct. or More) |
| Total flux | 228,000maxwell |
| Magnetic flux density | 20,000gauss |
| Throat connection hole diameter | 39mm |
| Mounting Dimensions | 87.4 mm (4-Hole Type) |
| External dimensions | Diameter φ 171x Depth 156 mm |
| Weight | 9.9kg |
| Attachment | Mounting Screws (Hex Bolt M6x20) x4 Washer x4 |
| Sold Separately | Repair Diaphragm Assay SXV1004 (¥ 180,000 (around 05), ¥ 98,000 (around 1999)) |