18 Sound 8NMB420 speaker, 8 ohm, 8 inch

Brand 
Eighteen Sound
Model 
8NMB420
SKU 
8NMB420-8
Manufacturer code 
ALT080420WF08NA - 022088N400
Product type 
Cone driver
Sales packaging 
Sold by piece
Brand
Eighteen Sound
Model
8NMB420
TLHP code
8NMB420-8
Manufacturer code
ALT080420WF08NA - 022088N400
Product type 
Cone driver
Sales packaging 
Sold by Piece
Recommended retail price
€252.00
TLHP selling price
161.28IT/piece
excluding delivery service
Save
36%

Simulate shipping costs and VAT
In stock: 12 pieces

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 8NMB420 neodymium transducer has been developed in response to a specific market requirement for a 8" midbass driver that combines excellent linearity with good efficiency and high power handling capabilities.

    8NMB420 is primarily intended for use as a midbass driver in compact 2-way or multiway reflex enclosures comprising line arrays. The parameters had been chosen to offer significant low frequency output in vented enclosure with size starting from 20 lit. with a tuning frequency around 60Hz. The low pass filter might be positioned as high as 2000-2500Hz. Multiple 8NMB420 units might be used: the compact size reflects in the capability to have precise attack time. This characteristic makes it the ideal choice for stage monitoring and bass guitar amplification. 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 exclusive dedicated double roll surround design offers enhanced linear travel and control, in order to reproduce precisely low frequency. The curvilinear paper cone is formed using a unique wood pulp composition designed to achieve the best possible rigidity and stiffness.
    The 50mm inside outside aluminum voice coil employs Interleaved Sandwich Voice coil (ISV) technology. It is composed by a high strength fiberglass former used to carry windings on both the outer and inner surfaces 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 force factor or BL. The voice coil is cooled incorporating airways between the chassis back plate and the magnet faceplate so that heated air is channeled away from the voice coil and gap and dissipated by the chassis basket. Thanks to the increasing use during outdoor audio events, the ability to perform in humid environments is a key feature of the 8NMB420. This is achieved trough a proprietary humidity repellent cone treatment without a moving speaker mass increase.

    95 dB SPL 1W / 1m average sensitivity
    51mm (2 in) Interleaved Sandwich Voice coil (ISV)
    280 W AES power handling
    External neodymium magnet assembly
    Single Demodulating Ring (SDR) for lower distortion
    Weather protected cone and plates for outdoor usage
    Suitable for line arrays and compact two way systems

General

Product type Cone driver
Brand Eighteen Sound
Reference 8NMB420
Product code ALT080420WF08NA - 022088N400

Informations

Nominal impedance 8 ohm
Dimensional category 8.5 inch
Frequency coverage type Midbass, Midrange, High midrange
Manufacturer sensitivity 95 dB
Calculated sensitivity 95.68 dB
Nominal power handling 280 W
Max power handling 400 W
Bandwidth 60÷5500 Hz

Fundamental parameters

Sd 230 cm²
Mms 14.9 gr
Cms 463 µm/N
Le 0.35 mH
Re 5 ohm
BL 10 T.m

Small signal parameters

Fs 61 Hz
Qes 0.31
Qms 4
Qts 0.28
Vas 33 L

Datas

Xmax ±5.8 mm
EBP 197 Hz
Zmin 5.9 ohm
Fs / Qts 218 Hz
Vas * Qts² 2.59 L
Calculated efficiency 2.32 %
Weight ~1.7 kg

Dimensions

Voice coil diameter 2 inch
Outside diameter 210 mm
Baffle cutout diameter 186 mm
Depth 99 mm
Front thickness 14 mm
Depth after front 85 mm

Shape & Materials

Front chape Cylindrical
Magnet type Neodymium


Question about Eighteen Sound 8NMB420-8

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Informations Eighteen Sound 8NMB420-8

The 8NMB420 neodymium transducer has been developed in response to a specific market requirement for a 8" midbass driver that combines excellent linearity with good efficiency and high power handling capabilities.

8NMB420 is primarily intended for use as a midbass driver in compact 2-way or multiway reflex enclosures comprising line arrays. The parameters had been chosen to offer significant low frequency output in vented enclosure with size starting from 20 lit. with a tuning frequency around 60Hz. The low pass filter might be positioned as high as 2000-2500Hz. Multiple 8NMB420 units might be used: the compact size reflects in the capability to have precise attack time. This characteristic makes it the ideal choice for stage monitoring and bass guitar amplification. 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 exclusive dedicated double roll surround design offers enhanced linear travel and control, in order to reproduce precisely low frequency. The curvilinear paper cone is formed using a unique wood pulp composition designed to achieve the best possible rigidity and stiffness.
The 50mm inside outside aluminum voice coil employs Interleaved Sandwich Voice coil (ISV) technology. It is composed by a high strength fiberglass former used to carry windings on both the outer and inner surfaces 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 force factor or BL. The voice coil is cooled incorporating airways between the chassis back plate and the magnet faceplate so that heated air is channeled away from the voice coil and gap and dissipated by the chassis basket. Thanks to the increasing use during outdoor audio events, the ability to perform in humid environments is a key feature of the 8NMB420. This is achieved trough a proprietary humidity repellent cone treatment without a moving speaker mass increase.

95 dB SPL 1W / 1m average sensitivity
51mm (2 in) Interleaved Sandwich Voice coil (ISV)
280 W AES power handling
External neodymium magnet assembly
Single Demodulating Ring (SDR) for lower distortion
Weather protected cone and plates for outdoor usage
Suitable for line arrays and compact two way systems
Manufacturer Eighteen Sound
Name 18 Sound 8NMB420 speaker, 8 ohm, 8 inch
SKU 8NMB420-8
Impedance 8 Ohm
Seller TLHP
Price 161.28 134.4
Availability In stock


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 8NMB420-8

SPL measure

Image spl measure cone driver Eighteen Sound 18 Sound 8NMB420 speaker, 8 ohm, 8 inch

Impedance measure

Image impedance measure cone driver Eighteen Sound 18 Sound 8NMB420 speaker, 8 ohm, 8 inch

Dimensions

Image Drawing & Mounting cone driver Eighteen Sound 18 Sound 8NMB420 speaker, 8 ohm, 8 inch

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.

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