18s 6NMB420 8 Ohm

18s 6NMB420 8 Ohm
175,63 € * 261,80 € * (32,91% gespart)
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Lieferzeit 4-5 Werktage

  • SW10269
The 6NMB420 is a 44mm voice coil 6.5 inch neodymium midbass transducer designed for mid low... mehr
Produktinformationen "18s 6NMB420 8 Ohm"
The 6NMB420 is a 44mm voice coil 6.5 inch neodymium midbass transducer designed for mid low frequency reproduction in system designs where high intelligibility is required.
When compared to our 6ND410 state-of-the-art midrange transducer, 6NMB420 offers a lower frequency resonance and a longer linear Xmax value. As a result the speaker shows an increased output around 250Hz, with a consequent slightly reduced output above 700Hz.
It is suitable as mid-bass in line array systems or multiple way systems with high-pass crossover above 200 Hz and low-pass up to 3kHz; enclosure might be closed or vented with volume size starting from 2 lit.
The speaker offers a superb linearity: distortion values are furtherly minimized by new enhanced design criterias, developed by Eighteen Sound engineers, taking the 6NMB420 to very high level of performance.
The extremely powerful external neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange. The levels of force factor and power handling are, as a consequence, at the upper professional level with best power to weight ratio.
A consistent heat transfer is guaranteed by the encapsulation of the magnetic structure in the interior of the basket, offering a largecontact space between the back plate and the dissipating structure.
Particular efforts were dedicated to the surround shape and material design in order to minimize the resonances on mid range frequencies. The triple roll design offers a consistent damping to typical bell modes.
The 44 mm voice coil is made of light-weight aluminum wire and assures linearity and high power handling.
The ability to perform in humid environments is a key feature of the 6NMB420: this is achieved through a proprietary humidity repellent cone treatment


General Specifications

Nominal Diameter 152mm (6 in)
Rated Impedance 8 Ohm
AES Power 200 W
Program Power 260 W
Peak Power 500 W
Sensitivity 100 dB
Frequency Range 200 - 7000 Hz
Power Compression @-10dB 0,9 dB
Power Compression @-3dB 1,6 dB
Power Compression @Full Power 2,9 dB
Max Recomm. Frequency 3500 Hz
Recomm. Enclosure Volume 2 - 6 lt. (0,07 - 0,21 cuft)
Minimum Impedance 6,2 Ohm at 25°C
Max Peak To Peak Excursion 14 mm (0,55 in)
Voice Coil Diameter 44 mm (1,75 in)
Voice Coil winding material aluminum
Suspension Triple Roll, Polycotton
Cone Curvilinear, Paper

Thiele Small Parameters

Fs 110 Hz
Re 5,3 Ohm
Sd 0,013 sq.mt. (20,15 sq.in.)
Qms 2,7
Qes 0,38
Qts 0,33
Vas 6,1 lt. (0,22 cuft)
Mms 8,5 gr. (18,76 lb)
BL 9 Tm
Linear Mathematical Xmax ± 3 mm (±0,12 in)
Le (1kHz) 0,1 mH
Ref. Efficiency 1W@1m (half space) 95,1 dB

Mounting information

Overall diameter 162 mm (6,38 in)
N. of mounting holes and bolt 4
Mounting holes diameter 5,5 mm (0,22 in)
Bolt circle diameter 170 mm (6,69 in)
Front mount baffle cutout ø 148 mm (5,38 in)
Rear mount baffle cutout ø 148 mm (5,38 in)
Total depth 73 mm (2,87 in)
Flange and gasket thickness 11,5 mm (0,45 in)
Net weight 1,25 kg (2,75 lb)
Shipping weight 1,45 kg (3,19 lb)
Packaging Dimensions 185x170x85mm (7.2x6.6x3.3 in)
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