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Description
Eighteen Sound 10NMB420 |
| Resonant frequency | fS | 65 | Hz |
| Electrical Q | QES | 0.36 | |
| Mechanical Q | QMS | 4.60 | |
| Total Q factor | QTS | 0.33 | |
| Suspension equivalent air volume | VAS | 30 | litres |
| DC resistance | RE | 10.5 | Ω |
| Minimum impedance | Zmin | 11.9 | Ω |
| Voice coil inductance | LE | 0.4 | mH |
| Force factor | B·l | 19.5 | T·m |
| Suspension mechanical resistance | RMS | 2.8 | N·s/m |
| Suspension mechanical compliance | CMS | 177 | µm/N |
| Moving mass | MMD | 26.8 | g |
| Moving mass (including airload) | MMS | 31.5 | g |
| Surface of the diaphragm | SD | 346 | cm² |
| Effective diaphragm diameter | Ø | 21 | cm |
| Maximum linear excursion | Xmax | ± 4 | mm |
| Excursion limit | Xlim | ± 12.5 | mm |
| Displacement volume at Xmax | VD | 138.4 | cm³ |
| Efficiency | η₀ | 2.23 | % |
| Efficiency bandwidth product | EBP | 180 |
| Overall diameter | 260 | mm |
| Baffle hole diameter | 232 | mm |
| Overall depth | 122 | mm |
| Flange thickness | 11 | mm |
| Net weight | 3 | kg |
| Diaphragm material | Curvilinear, Treated paper | |
| Surround material | M-roll, Polycotton | |
| Voice coil diameter | 65 | mm |
| Coil material | Aluminum | |
| Magnet | Neodymium | |
SIZE
260 mm
MAX POWER
500 W
SPL
99 dB
FREQUENCY RANGE
65 - 5000 Hz
DC RESISTANCE
10.5 Ω
The 10NMB420 neodymium transducer has been developed in response to a specific market requirement for a 10" midbass driver that combines excellent linearity with good efficiency and high power handling capabilities. The 10NMB420 is primarily intended for use as a midbass driver in line-arrays as well as high quality 2-way or multiway reflex enclosures. The low pass filter might be positioned as high as 2000Hz. 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. The 65mm Ø state-of-the-art, aluminum wire voice coil employs Interleaved Sandwich Voice coil (ISV) technology. It is composed by a high strength fiberglas former used to carry windings on both the outer and inner surfaces, in order to achieve a mass balanced coil. This results in an extremely linear motor assembly which, in conjunction with the highly advanced design of the magnetic structure, provides a high BL force factor. The voice coil is cooled through airways placed between the chassis back plate and the magnet faceplate. In this way heated air is channeled away from the voice coil and the gap. Another technology present into the 10NMB420 is the SDR (Single Demodulating Ring), used to reproduce instantaneous peak on mid frequencies, reducing intermodulation distortion. Thanks to the increasing use during outdoor audio events, the ability to perform in humid environments is an extra key feature of the 10NMB420. This is achieved trough an exclusively developed cone treatment which renders the cone humidity repellent while does not increasing the total moving speaker mass.
Speaker
- Size: 10"
- Power rating: 350 W AES
- Impedance: 8 Ohm
- 99 dB SPL 1W/1m
- Frequency range: 65 - 5000 Hz
- Qts 0.33
- Fs 65 Hz
- Weight: 3 kg
- Neodymium chassis
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