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18 Sound 12ND830
Art.Nr.: 18S12ND830
18-Sound 12ND830 High Output MB Neodymium Treiber
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Eighteensound
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18 Sound 12ND830
SMALL SPECIFICATIONS
99 dB SPL 1W / 1m average sensitivity 75 mm (3 in) Interleaved Sandwich Voice coil (ISV) 450 W continuous pink noise power handling Neodymium magnet assembly Ideal for compact reflex enclosures and two-way systems
The 12ND830 is a scaled-down version of our 15ND830 and differs from the 12ND930 in the wire conception, offering a lighter speaker with a lower force factor.
The 12ND830 finds its ideal application in compact reflex enclosures where a considerable amount of low frequencies and low distortion are required. Its optimum low weight makes it suitable for fixed installations or portable professional loudspeaker systems.
The neodymium magnet assembly developed by Eighteen Sound engineers assures a high flux concentration, low power compression and excellent heat exchange since the external magnet configuration is considerably more efficient than traditional under-pole magnet topology.
The direct contact between the large heat sink and the specially designed basket, together with the magnetic structure, represents a fundamental improvement in thermal connection and heat dissipation. The result is increased power handling capabilities and lower power compression.
The deep profile curvilinear cone, made from a special high strength wood pulp, has been designed to achieve the best possible linearity within its frequency range. The cone surround, made from linen material is highly resistant to aging and fatigue. The in-house developed cone treatment is fully water repellent and also gives a significant degree of rigidity to the cone.
The 75 mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a strong fiberglas former which improves force transmission and thermal power handling.
A special coating applied to both the top and back plates makes the 12ND830 far more resistant to the corrosive effects of salts and oxidization.
SMALL SPECIFICATIONS
| GENERAL SPECIFICATIONS | |
| Nominal Diameter | 300mm (12 in) |
| Rated Impedance | 8 Ohm |
| Continuous Pink Noise (1) | 450W |
| Continuous Power (2) | 350W |
| Program Power (3) | 700W |
| Peak Power (4) | 1500W |
| Sensitivity (5) | 99dB |
| Frequency Range (6) | 53 ÷ 5000 Hz |
| Power Compression @-10dB (7) | (35 W) 0,6 dB |
| Power Compression @-3dB | (175 W) 2,0 dB |
| Power Compression @Full Power | (350 W) 3,1 dB |
| Max Recomm. Frequency | 2000 Hz |
| Recomm. Enclosure Volume | 40 ÷ 100 lt. (1,41 ÷ 3,53 cuft) |
| Minimum Impedance | 7,0 Ohm at 25°C |
| Max Peak To Peak Excursion | 30 mm (1,18 in) |
| Voice Coil Diameter | 75 mm (2,95 in) |
| Voice Coil Winding Material | aluminum |
| Polarity | positive voltage on red terminal gives forward cone motion |
| THIELE SMALL PARAMETERS (8) | |
| Fs | 55 Hz |
| Re | 5,7 Ohm |
| Sd | 0,0531 sq.mt. (82,31 sq.in.) |
| Qms | 5,15 |
| Qes | 0,296 |
| Qts | 0,28 |
| Vas | 72 lt. (2,54cuft) |
| Mms | 46 gr. (0,10 lb) |
| BL | 17,6 Tm |
| Linear Mathematical Xmax (9) | ± 6,5 mm (± 0,26 in) |
| Le (1kHz) | 1,5 mH |
| Ref. Efficiency 1W@1m (half space) | 98,3 dB |
| MOUNTING INFORMATIONS | |
| Overall diameter | 315 mm (12,4 in) |
| N. of mounting holes | 8 |
| Mounting holes diameter | 7,15 mm (0,28 in) |
| Bolt circle diameter | 296-300 mm (11,65-11,8 in) |
| Front mount baffle cutout ø | 282 mm (11,1 in) |
| Rear mount baffle cutout ø | 282 mm (11,1 in) |
| Total depth | 140 mm (5,52 in) |
| Flange and gasket thickness | 11,5 mm (0,45 in) |
| Net weight | 4 kg (8,83 lb) |
| Shipping weight | 4,8 kg (10,6 lb) |
| CardBoard Packaging dimensions | 332 x 332 x 184 mm(13,07 x 13,07 x 7,24 in) |
The 12ND830 is a scaled-down version of our 15ND830 and differs from the 12ND930 in the wire conception, offering a lighter speaker with a lower force factor.
The 12ND830 finds its ideal application in compact reflex enclosures where a considerable amount of low frequencies and low distortion are required. Its optimum low weight makes it suitable for fixed installations or portable professional loudspeaker systems.
The neodymium magnet assembly developed by Eighteen Sound engineers assures a high flux concentration, low power compression and excellent heat exchange since the external magnet configuration is considerably more efficient than traditional under-pole magnet topology.
The direct contact between the large heat sink and the specially designed basket, together with the magnetic structure, represents a fundamental improvement in thermal connection and heat dissipation. The result is increased power handling capabilities and lower power compression.
The deep profile curvilinear cone, made from a special high strength wood pulp, has been designed to achieve the best possible linearity within its frequency range. The cone surround, made from linen material is highly resistant to aging and fatigue. The in-house developed cone treatment is fully water repellent and also gives a significant degree of rigidity to the cone.
The 75 mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a strong fiberglas former which improves force transmission and thermal power handling.
A special coating applied to both the top and back plates makes the 12ND830 far more resistant to the corrosive effects of salts and oxidization.
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