Beschrijving
Key features
-
- 110 dB 1W / 1m average sensitivity
- 1,4 inch exit throat
- 3 inch edgewound aluminum voice coil
- 200 W program power handling
- Pure Titanium diaphragm assembly
- Excellent thermal exchange
- Neodymium ring magnetic structure
Description
The ND1480 1.4 inch exit neodymium high frequency compression driver
has been designed for high level sound systems application.
The
titanium diaphragm is produced in house and has been developed to
assure unmatched transient response. The diaphragm assembly is made by
joining the former directly to the titanium dome on its upper bend
edge. In comparison with a usual straight former joint, the driver?s
design assures extended frequency energy transfer for improved response
linearity and unparallel reliability. This feature facilitates proper
motion control of the dome in real working conditions. A proprietary
treated Nomex former is used as Nomex shows a 30% higher value of
tensile elongation at a working operative temperature (200?C) when
compared to Kapton. Moreover, this proprietary former material is also
suitable for use in higher moisture content environments.
The
ND1480 powerful neodymium magnet assembly has been designed to obtain
22KGauss in the gap for major benefits in transient response. The motor
structure, throughout the precisely coherent phase plug with 3
circumferential slots and copper ring on the pole piece, reduces
inductance effect and distortion. Four top plate air ducts have been
designed to act as a loading chamber for the diaphragm, implementing
mid band distortion and response figures.
The custom designed
O-ring creates a tight seal between the plate and the cover assuring
air chamber loading. Excellent heat dissipation and thermal exchange
are guaranteed by the direct contact between the magnetic structure and
the aluminum cover which leads to a lower power compression value.
The
ability to perform properly under inclement weather conditions is a key
point of the Eighteen Sound philosophy. Hence, a special treatment is
applied to the magnet and the top and back plates of the magnetic
structure in order to make the driver more resistant to the corrosive
effects of salts and oxidization. This treatment is more effective than
any other treatment in use today.
| GENERAL SPECIFICATIONS | |
| Throat Diameter | 35,5 mm (1,4 in) |
| Rated Impedance | 8 ohm |
| DC Resistance | 6,2 ohm |
| Minimum Impedance | 8 ohm at 3500 Hz |
| Le (at 1kHz) | 124 ?H |
| AES power (1) | 100 W above 1,2 kHz |
| Program power (2) | 200 W above 1,2 kHz |
| Sensitivity (1W@1m) (3) | 110 dB |
| Frequency Range | 500 Hz ? 20 kHz |
| Recomm. Xover Frequency | above 800 Hz (12 dB/octave) |
| Diaphragm Material | Titanium |
| Voice Coil Diameter | 75 mm (3 in) |
| Voice Coil Winding Material | Edge-wound aluminum |
| Magnet Material | Neodymium |
| Flux Density | 2,2 T |
| BL Factor | 15,5 N/A |
| Polarity | Positive voltage on red terminal gives positive pressure in the throat |
| MOUNTING INFORMATIONS | |
| Overall diameter | 131 mm (5,1 in) |
| Mounting holes diameter | 4 M6 holes 90? at ?102 mm (4 in) |
| Bolt circle diameter | 102mm (4 in) |
| Total depth | 62 mm (2,5 in) |
| Net weight | 3,1 Kg (6,98 lb) |
| Shipping weight | 3,3 Kg (7,25 lb) |
| CardBoard Packaging dimensions | 132x132x68 mm (5,2×5,2×2,7 in) |
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