null
Skip to main content

18 Sound

18 Sound 8NMB420 8" Neodymium Midbass Speaker (Sold Individually)

$349.99
$279.99
$299.99
7% Off
(You save $70.00 )
SKU: 8NMB420
UPC: 753807515689
Condition: New
Availability: SOLD OUT
Shipping: Calculated at Checkout

Out of stock

Have more questions? Ask an Expert
Free shipping on orders over $200
30-Day Return Policy
Canadian Owned & Operated
Price Match Guarantee

Descriptions

About: 18 Sound 8NMB420 8" Neodymium Midbass Speaker (Sold Individually)

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.

Features: 

  • 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
Specifications: 
  • Nominal Diameter: 200 mm (in)
  • Nominal Impedance: 8 Ω
  • Minimum Impedance: 5.9 Ω
  • Nominal Power Handling: 280 W 
  • Continuous Power Handling: 400 W
  • Sensitivity: 95.0 dB
  • Frequency Range: 60 - 5500 Hz
  • Voice Coil Diameter: 51 mm (2.0 in)
  • Magnet Material: Neo
Parameters: 
  • Resonance Frequency: 61 Hz
  • Re: 5.0 Ω
  • Qes: 0.31
  • Qms: 4.0
  • Qts: 0.28
  • Vas: 33.0 dm3 
  • Sd: 230.0 cm2 (35.65 in2)
  • Xmax: 5.8 mm
  • Mms: 14.9 g
  • Bl: 10.0 Txm
  • Le: 0.35 mH
  • EBP: 196 Hz
Mounting Information:
  • Overall Diameter: 210 mm 
  • Bolt Circle Diameter: 195 mm 
  • Baffle Cutout Diameter: 186.0 mm 
  • Depth: 99 mm 
  • Flange and Gasket Thickness: 14 mm 
  • Net Weight: 1.7 kg 

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Fast shipping across Canada from our Toronto warehouse. Most orders ship within 1–2 business days. Shipping costs and delivery estimates are calculated at checkout. Returns are accepted on eligible items that are unused and in original packaging within our return period. For full details, please view our Shipping Policy and Returns & Exchanges Policy.

Please note that final sale, clearance, open-box, and refurbished items are not eligible for returns or refunds. These items may only be covered under their respective warranty or exchange terms where applicable. For full details regarding open-box items, please review our Open Box Policy.

More Recommendations

See all

Free Shipping

Lowest Price

Quick Service

Buy now pay later

#

JL Audio: Uncompromised Sound

Shop JL Audio
#

Open Box Deals — Like New, Better Price

Browse Deals