8NW51 Mid-Bass

400 W continuous program power capacity

50 mm (2 in) copper voice coil

70 – 3000 Hz response

96.5 dB sensitivity Neodymium ring magnet assembly Shorting copper cap for extended HF response

Ventilated voice coil gap for reduced power compression

LF Drivers LF Nd Drivers Coaxials HF Drivers Horns

Specification

Nominal Diameter

200 (8) mm (in)

Nominal Impedance (1)

8 Ohm

Minimum Impedence

7.7 Ohm

Nominal Power Handling (2)

200 W

Continuous Power Handling (3)

400 W

Sensitivity (1W/1m) (4)

96.5 dB

Frequency Range

70 - 3000 Hz

Voice Coil Diameter

51 (2) mm (in)

Winding Material

Copper

Former Material

Glass Fibre

Winding Depth

18.5 (0.73) mm (in)

Magnetic Gap Depth

10 (0.4) mm (in)

Flux Density

1.3 T

Thiele & Small Parameters

Fs

74 Hz

Re

5.2 Ohm

Qes

0.19

Qms

2.7

Qts

0.17

Vas

11 (0.4) dm3 (ft3)

Sd

220 (34.1) cm2 (in2)

Eta Zero

2.4 %

Xmax

+/- 6 mm

Xvar

+/- 6 mm

Mms

28 g

Bl

18.9 Txm

Le

0.4 mH

 

Mounting and Shipping Info

 

 

Overall Diameter

225 mm (8.8 in)

Bolt Circle Diameter

210 mm (8.3 in)

Baffle Cutout Diameter

187 mm (7.4 in)

Depth

100 mm (4 in)

Flange and Gasket Thickness

11 mm (0.4 in)

Net Weight

3 kg (6.6 lb)

Shipping Weight

3.4 kg (7.5 lb)

Shipping Box

300x160x180 mm

 

(11.8x6.3x7.1 in)

1For different impedances, please ask.

22 hours test made with continuous pink noise signal (6 dB crest factor). Power calculated on rated minimum impedance.

3Power on Continuous Program is defined as 3 dB greater than the Nominal rating.

4Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms Nominal Impedance

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B&C Speakers manual 8NW51 Mid-Bass, Specification, Thiele & Small Parameters, Mounting and Shipping Info

8NW51 specifications

The B&C Speakers 8NW51 is a high-performance 8-inch neodymium woofer that has gained attention in the pro audio industry for its outstanding sound quality and versatile applications. Combining innovative technology with engineered materials, the 8NW51 stands out in various sound reinforcement situations, making it a popular choice among audio professionals.

One of the key features of the 8NW51 is its neodymium magnet assembly, which significantly reduces weight while maintaining a high magnetic flux. This results in improved efficiency and power handling, allowing for a lightweight speaker that does not compromise on performance. Weighing less than traditional ferrite magnet speakers, the 8NW51 becomes a favorite for portable sound systems and applications requiring easy transportation.

The woofer incorporates a robust paper cone that offers a natural sound response. This material ensures that the speaker delivers rich lows and mid-range frequencies, while maintaining clarity and detail. The cone is designed with a specially treated surface that enhances durability and moisture resistance, making it suitable for outdoor and challenging environments.

An important aspect of the 8NW51 is its exceptional linearity and low distortion characteristics. The voice coil, made from a high-temperature winding, ensures that the driver can handle high power levels without overheating. This means that the speaker can perform reliably during long events and at high volumes, making it suitable for professional applications like concert sound, live sound reinforcement, and installations.

The 8NW51 also features a strong cast aluminum frame that provides structural integrity while reducing resonance. This construction minimizes unwanted vibrations, further contributing to the clarity and accuracy of sound reproduction. The speaker's design facilitates easy installation and integration into various enclosure types, giving audio engineers flexibility in their setups.

In summary, the B&C Speakers 8NW51 is an exceptional 8-inch neodymium woofer that embodies the perfect combination of lightweight construction, high power handling, and superior sound quality. Its innovative use of materials and design technologies ensures it meets the demands of professional audio applications, making it a reliable choice for those seeking performance and durability in a compact form factor. Whether for touring systems or fixed installations, the 8NW51 remains one of the preferred options for audio experts.