Beschrijving
Key features
- 99 dB SPL 1W / 1m average sensitivity
- 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
- 1000 W AES power handling
- Double Silicon Spider (DSS) for improved excursion control and linearity
- Weather protected cone and plates for outdoor usage
- Improved heat dissipation via unique basket design
- Suitable for high SPL subwoofer designs
Description
The 18W1000 is a low frequency woofer which sets a benchmark in 18″
(460 mm) high output transducers. It represents a further development
of the Eighteen Sound 18LW1250 but has a lighter mass and increased
sensitivity.
The
18W1000 can be used as a low bass or sub-woofer component, in either a
reflex, bandpass or horn loaded configuration, in high power fixed or
touring loudspeaker systems. It provides clean, linear, undistorted low
frequency reproduction at very high power levels.
The high
excursion capabilities of the surround and suspension system, in
conjunction with the Double Silicon Spider (DSS), enables the 18W1000
to achieve high levels of linear travel while maintaining full control
of the moving mass.
The high quality curvilinear cone assures
smooth response and exceptional strength with maximum reliability under
high mechanical stress.
The 100mm copper wire voice coil employs
the Interleaved Sandwich Voice coil (ISV) technology, in which a high
strength fiberglas former carries windings on both the outer and inner
surfaces to achieve a balanced coil with a uniform distribution of mass
and motive energy. This results in an extremely linear motor assembly.
Excellent heat dissipation has been achieved by incorporating air channels between the basket and magnetic top plate.
Maximum
flux concentration and force factor in the gap is assured by the unique
shape and design of the top and back plates, which have been researched
and designed using our in-house magnetic flux FEA CAD resource.
Due
to the increasing use of audio systems at outdoor events, the ability
of the 18W1000 to perform in adverse weather conditions or in areas of
high humidity is a key feature. This has been achieved using an
exclusive cone treatment and magnetic plate processes which resist
corrosion and render the cone water repellent.
| GENERAL SPECIFICATIONS | |
| Nominal Diameter | 460 mm (18 in) |
| Rated Impedance | 8 Ohm |
| AES Power | 1000 W |
| Program Power (1) | 1400 W |
| Peak Power (2) | 7000 W |
| Sensitivity (3) | 99 dB |
| Frequency Range (4) | 37 – 4700 Hz |
| Power Compression @-10dB (5) | 0,6 dB |
| Power Compression @-3dB | 2,1 dB |
| Power Compression @Full Power | 3,1 dB |
| Max Recomm. Frequency | 500 Hz |
| Recomm. Enclosure Volume | 120 ? 250 lt. (4,24 ? 8,83 cuft) |
| Minimum Impedance | 7,4 Ohm at 25?C |
| Max Peak To Peak Excursion | 36 mm (1,42 in) |
| Voice Coil Diameter | 100 mm (4 in) |
| Voice Coil Winding Material | copper |
| Suspension | M-roll, Polycotton |
| Cone | Curvilinear, Paper |
| THIELE SMALL PARAMETERS (6) | |
| Fs | 35 Hz |
| Re | 5,8 Ohm |
| Sd | 0,1134 sq.mt. (175,7 sq.in.) |
| Qms | 7,1 |
| Qes | 0,24 |
| Qts | 0,23 |
| Vas | 268 lt. (9,47 cuft) |
| Mms | 139 gr. (0,31 lb) |
| BL | 27,6 Tm |
| Linear Mathematical Xmax (7) | ? 7 mm (?0,28 in) |
| Le (1kHz) | 2,45 mH |
| Ref. Efficiency 1W@1m (half space) | 98,9 dB |
| MOUNTING INFORMATIONS | |
| Overall diameter | 462 mm (18,18 in) |
| N. of mounting holes | 8 |
| Mounting holes diameter | 8,5 mm (0,33 in) |
| Bolt circle diameter | 438-440 mm (17,24-17,32 in) |
| Front mount baffle cutout ? | 416 mm (16,38 in) |
| Rear mount baffle cutout ? | 412 mm (16,22 in) |
| Total depth | 205,9 mm (8,1 in) |
| Flange and gasket thickness | 19 mm (0,75 in) |
| Net weight | 12,9 kg (28,48 lb) |
| Shipping weight | 14,6 kg (32,23 lb) |
| CardBoard Packaging dimensions | 482 x 482 x 257 mm (19 x 19 x 10,1 in) |
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