Speaker 18 Sound 15NMB420, 8 ohm, 15 inch
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Eighteen Sound |
15NMB420 |
15NMB420-8 |
022158N240 |
Cone driver |
Sold by piece |
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Brand Eighteen Sound |
Model 15NMB420 |
TLHP code 15NMB420-8 |
Manufacturer code 022158N240 |
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Product type Cone driver |
Sales packaging Sold by Piece |
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36%
Simulate shipping costs and VAT
If you want to purchase more than the quantity in stock, have a look at the supply time below :
Indicative average supply lead time: 11 weeks
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The 15NMB420 is a 380 mm (15 in) neodymium mid-bass transducer designed for professional monitoring and sound reinforcement. The most extended bass, lowest distortion and best control is usually realized in properly designed vented enclosures. Typical enclosure sizes range from 80lit. up with tunings from 40 to 50Hz.
Low-frequency equalization is suggested in order to improve the bass output. A conservative idea of amplifier size ranges from 400-800W, allowing maximum output with no risk of speaker damage when properly used. The neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange, since the external magnet configuration is considerably more efficient than the traditional under-pole magnet topology. This allows to obtain high levels of force factor and power handling with a power to weight ratio at the upper level of the category.
SDR (Single Demodulating Ring) technology has been used to reproduce instantaneous peaks on mid frequencies, reducing intermodulation distortion.
The high quality paper cone has a smooth, curvilinear profile design that eliminates bell-mode resonances within the intended frequency range. This is carried by a specially treated and damped multiple roll linen suspension designed to control excursion maintaining the piston action linearity.
The 15NMB420 employs a 75mm aluminum Interleaved Sandwich Voice coil (ISV), in which a high strength fiberglass former carries windings on both the outer and inner surfaces to achieve a mass balanced coil, resulting in an extremely linear motor assembly.
A proprietary humidity-block cone treatment has been implemented in order to perform in outdoor environments under adverse weather conditions. In addition, special treatment of both the face and back plates results in a product which is far more resistant to the corrosive effects of salts and oxidization than any other treatment in use.
99 dB SPL 1W / 1m average sensitivity
75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
450 W AES power handling
External neodymium magnet assembly
Single Demodulating Rings (SDR) for lower distortion
Weather protected cone and plates for outdoor usage
Specially designed for compact two way systems
General |
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| Product type | Cone driver |
| Brand | Eighteen Sound |
| Reference | 15NMB420 |
| Product code | 022158N240 |
Informations |
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| Nominal impedance | 8 ohm |
| Dimensional category | 15 inch |
| Frequency coverage type | Sub, Low, Midbass |
| Manufacturer sensitivity | 99 dB |
| Calculated sensitivity | 99.29 dB |
| Nominal power handling | 450 W |
| Max power handling | 700 W |
| Bandwidth | 40÷5000 Hz |
Fundamental parameters |
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| Sd | 900 cm² |
| Mms | 73 gr |
| Cms | 199 µm/N |
| Le | 0.8 mH |
| Re | 5.6 ohm |
| BL | 19 T.m |
Small signal parameters |
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| Fs | 42 Hz |
| Qes | 0.3 |
| Qms | 6 |
| Qts | 0.29 |
| Vas | 225 L |
Datas |
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| Xmax | ±6.5 mm |
| EBP | 140 Hz |
| Fs / Qts | 145 Hz |
| Vas * Qts² | 18.93 L |
| Calculated efficiency | 5.34 % |
| Weight | ~3.9 kg |
Dimensions |
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| Voice coil diameter | 3 inch |
| Outside diameter | 387 mm |
| Baffle cutout diameter | 353 mm |
| Depth | 169 mm |
| Front thickness | 11 mm |
| Depth after front | 158 mm |
Shape & Materials |
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| Front chape | Cylindrical |
| Magnet type | Neodymium |
Question about Eighteen Sound 15NMB420-8
Ask a new question!This system is only available for technical questions. For questions of prices, availability of products and deadline thank you to send your request by the contact page.
Repair Eighteen Sound 15NMB420-8
Informations Eighteen Sound 15NMB420-8
Low-frequency equalization is suggested in order to improve the bass output. A conservative idea of amplifier size ranges from 400-800W, allowing maximum output with no risk of speaker damage when properly used. The neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange, since the external magnet configuration is considerably more efficient than the traditional under-pole magnet topology. This allows to obtain high levels of force factor and power handling with a power to weight ratio at the upper level of the category.
SDR (Single Demodulating Ring) technology has been used to reproduce instantaneous peaks on mid frequencies, reducing intermodulation distortion.
The high quality paper cone has a smooth, curvilinear profile design that eliminates bell-mode resonances within the intended frequency range. This is carried by a specially treated and damped multiple roll linen suspension designed to control excursion maintaining the piston action linearity.
The 15NMB420 employs a 75mm aluminum Interleaved Sandwich Voice coil (ISV), in which a high strength fiberglass former carries windings on both the outer and inner surfaces to achieve a mass balanced coil, resulting in an extremely linear motor assembly.
A proprietary humidity-block cone treatment has been implemented in order to perform in outdoor environments under adverse weather conditions. In addition, special treatment of both the face and back plates results in a product which is far more resistant to the corrosive effects of salts and oxidization than any other treatment in use.
99 dB SPL 1W / 1m average sensitivity
75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
450 W AES power handling
External neodymium magnet assembly
Single Demodulating Rings (SDR) for lower distortion
Weather protected cone and plates for outdoor usage
Specially designed for compact two way systems
Name Speaker 18 Sound 15NMB420, 8 ohm, 15 inch
SKU 15NMB420-8
Price € 299.52 249.6
Availability In stock
Buy Speaker 18 Sound 15NMB420, 8 ohm, 15 inch
All or a part of the characteristics displayed on this page are provided by the manufacturer, it is possible that some pieces of information are unavailable or wrong. In addition, the manufacturer may need to change the product specifications without notice at any time in order to improve the product, or to adapt his offer to the manufacturing and supply constraints.. We suggest you to contact us if you need further information, if you observe a mistake or if you wish to have confirmation about information.
Measures/Schemes Eighteen Sound 15NMB420-8
SPL measure *
* Frequency response curve of 15NMB420 made on 125 lit. enclosure tuned 50hz in free field (4π) environment. Enclosure closes the rear of the driver. The thin line represents 45 deg. off axis frequency response.
Impedance measure *
* Free air impedance magnitude curve.
Dimensions
Garantie
This product is under manufacturer's warranty. This warranty protect you for the manufacturing defaults. The warranty does not protect for abnormal use of the product.
