18s 18ND9300 8 Ohm

18s 18ND9300 8 Ohm
530,85 € * 833,00 € * (36,27% gespart)
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Lieferzeit 4-5 Werktage

  • SW10244
The 18ND9300 is an extended low frequency loudspeaker which sets a new industry standard in 18"... mehr
Produktinformationen "18s 18ND9300 8 Ohm"
The 18ND9300 is an extended low frequency loudspeaker which sets a new industry standard in 18" (460 mm) neodymium high performance transducers. The speaker has been derived from our flagship 18LW1400, after in-depth studies on magnetic circuit design, which focused on dissipating the heat generated by the powerful 4" coil.
The loudspeaker design provides clean and undistorted LF reproduction at a very high SPL and enables the speaker to withstand high power levels without damage.
The neo magnet assembly assures high flux concentration, low power compression and excellent heat exchange. The heatsink has been specifically studied using F.E.A. simulators and the necessary heat transfer to the dissipative structure has been improved. The heat sink concept has been further improved by using an air-diffractor that offers high thermal capacity and has been designed to force air moved by the dust cap through the heat sink fins and cool it down.
The 18ND9300 design features include an exceptional displacement suspension system which, in conjunction with a carbon fibre reinforced, straight ribbed cone and a Double Silicon Spider (DSS), result in an ultra-linear piston action, providing full control across the entire working range.
The 4" state-of-the-art voice coil, based on Interleaved Sandwich Voice coil (ISV) technology, provides high levels of thermal stability and durability. The ISV technology achieves a balanced linear motor unit exerting an exceptionally high force factor. This is realised through a high strength fiberglas former with half the coil wound half on the outside and half on the inside and bonded together using unique high-temperature resin adhesives.
The low distortion and unmatched sound quality of the 18ND9300 have been further improved by Double Demodulating Rings (DDR) embedded in the pole piece of the magnetic structure.
A proprietary humidity-block cone treatment makes the transducer suitable for outdoor use in adverse weather conditions. In addition, a special coating applied to both the top and back plates makes the 18ND9300 far more resistant to the corrosive effects of salts and oxidization.


General Specifications

Nominal Diameter 460mm (18 in)
Rated Impedance 8 Ohm
AES Power 1000W
Program Power 1400W
Peak Power 7000W
Sensitivity 98 dB
Frequency Range 28 - 2500 Hz
Power Compression @-10dB 0,8 dB
Power Compression @-3dB 2,1 dB
Power Compression @Full Power 3,2 dB
Max Recomm. Frequency 500 Hz
Recomm. Enclosure Volume 100 - 300 lt. (3,53 - 10,6 cuft)
Minimum Impedance  
Max Peak To Peak Excursion 50 mm (1,97 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil winding material copper
Suspension Triple roll, Polycotton
Cone Straight ribbed carbon fiber loaded cellulose

Thiele Small Parameters

Fs 30 Hz
Re 5 Ohm
Sd 0,122 sq.mt. (189,1 sq.in.)
Qms 7,86
Qes 0,29
Qts 0,28
Vas 316 lt. (11,16 cuft)
Mms 184 gr. (0,41 lb)
BL 24,4 Tm
Linear Mathematical Xmax ±9,5 mm (±0,37 in)
Le (1kHz) 2,02 mH
Ref. Efficiency 1W@1m (half space) 96,7 dB

Mounting information

Overall diameter 462 mm (18,2 in)
N. of mounting holes and bolt 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 ø 416 mm (16,38 in)
Rear mount baffle cutout ø 422 mm (16,61 in)
Total depth 223,5 mm (8,8 in)
Flange and gasket thickness 26 mm (1,0 in)
Net weight 7,6 kg (16,8 lb)
Shipping weight 9,45 kg (20,83 lb)
Packaging Dimensions 482x482x257 mm (18,98x18,98x10,12 in)
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