8NDL51 Woofer

50 mm (2 in) copper voice coil

70 – 3000 Hz response

94 dB sensitivity Neodymium magnet allows a very light yet powerful motor assembly Shorting copper cap for extended HF response 400 W continuous program power capacity

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

6.6 Ohm

Nominal Power Handling (2)

200 W

Continuous Power Handling (3)

400 W

Sensitivity (1W/1m) (4)

94 dB

Frequency Range

65 -3000 Hz

Voice Coil Diameter

51 (2) mm (in)

Winding Material

Copper

Former Material

Kapton

Winding Depth

16.5 (0.65) mm (in)

Magnetic Gap Depth

8 (5/16) mm (in)

Flux Density

1.05 T

Thiele & Small Parameters

Fs

66 Hz

Re

5.3 Ohm

Qes

0.41

Qms

3.6

Qts

0.37

Vas

14 (0.5) dm3 (ft3)

Sd

220 (34.1) cm2 (in2)

Eta Zero

1 %

Xmax

+/- 7 mm

Xvar

+/- 7 mm

Mms

28 g

Bl

12.4 Txm

Le

0.5 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

90 mm (3.5 in)

Flange and Gasket Thickness

11 mm (0.4 in)

Net Weight

1.8 kg (4 lb)

Shipping Weight

2.2 kg (4.8 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 8NDL51 Woofer, Specification, Thiele & Small Parameters, Mounting and Shipping Info

8NDL51 specifications

B&C Speakers is renowned for its high-performance loudspeakers, and the 8NDL51 is no exception. This 8-inch neodymium woofer stands out in the professional audio market, having been engineered specifically for use in compact, high-efficiency systems. The 8NDL51 is appreciated in various applications, including PA systems, monitors, and portable sound reinforcement setups.

One of the primary features of the 8NDL51 is its significant power handling capacity. This model can handle up to 500 watts of AES power, making it ideal for high-demand situations where reliability is critical. Its high efficiency rating allows it to produce a strong output with minimal input, ensuring that sound engineers can achieve impressive volume levels without distortion.

The woofer is built around a robust neodymium magnet structure that contributes to its lightweight design. This neodymium construction not only decreases the overall weight of the speaker but also enhances its sensitivity and responsiveness. The compact form factor is especially beneficial for applications where space is limited, such as in portable sound systems or tight installation environments.

The 8NDL51 features a specially designed suspension system that ensures excellent linearity and reduced distortion across diverse frequency ranges. The precision-engineered cone, made from a unique composite material, is optimized for low-frequency reproduction while maintaining clarity. Additionally, the woofer is equipped with a large voice coil that enhances transient response for more detailed sound reproduction.

Furthermore, this model boasts an impressive frequency response range, handling lows as deep as 45 Hz, which is exceptional for an 8-inch speaker. It also maintains a smooth mid-frequency range, making it versatile enough to handle vocals and instruments alike. The rugged construction makes it suitable for various environments, from live concerts to studio settings.

To ensure maximum performance, B&C Speakers has integrated advanced thermal management features into the 8NDL51. Its design promotes effective heat dissipation, allowing the woofer to perform optimally even during sustained high-power applications.

In conclusion, the B&C 8NDL51 is a powerful, lightweight 8-inch neodymium woofer designed for professional use. With high power handling, efficient sound output, and excellent frequency response, it is an outstanding choice for audio professionals seeking a reliable and versatile speaker solution.