B&C Speakers manual 15NDL76 Woofer, Specification, Thiele & Small Parameters

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15NDL76 Woofer

1000 W continuous program power capacity

76 mm (3 in) copper voice coil

40 – 2000 Hz response

99.5 dB sensitivity Neodymium magnet allows a very light yet powerful motor assembly Ventilated voice coil gap for reduced power compression

LF Drivers LF Nd Drivers Coaxials HF Drivers Horns

Specification

Nominal Diameter

380 (15) mm (in)

Nominal Impedance (1)

8 Ohm

Minimum Impedence

6.7 Ohm

Nominal Power Handling (2)

500 W

Continuous Power Handling (3)

1000 W

Sensitivity (1W/1m) (4)

99.5 dB

Frequency Range

40 - 2000 Hz

Voice Coil Diameter

76 (3) mm (in)

Winding Material

Copper

Former Material

Glass Fibre

Winding Depth

17.5 (11/16) mm (in)

Magnetic Gap Depth

10.5 (0.4) mm (in)

Flux Density

1.25 T

Thiele & Small Parameters

Fs

37 Hz

Re

5.3 Ohm

Qes

0.24

Qms

4.5

Qts

0.22

Vas

195 (6.8) dm3 (ft3)

Sd

855 (132.5) cm2 (in2)

Eta Zero

4.1 %

Xmax

+/- 7 mm

Xvar

+/- 9 mm

Mms

96 g

Bl

22.5 Txm

Le

1.5 mH

 

Mounting and Shipping Info

 

 

Overall Diameter

393 mm (15.5 in)

Bolt Circle Diameter

374 mm (14.7 in)

Baffle Cutout Diameter

354 mm (13.9 in)

Depth

171 mm (6.7 in)

Flange and Gasket Thickness

16 mm (5/8 in)

Net Weight

4.6 kg (10.1 lb)

Shipping Weight

5.9 kg (13 lb)

Shipping Box

420x420x200 mm

 

(16.5x16.5x7.9 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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Contents 15NDL76 Woofer SpecificationThiele & Small Parameters Mounting and Shipping Info

15NDL76 specifications

B&C Speakers, renowned for their exceptional sound reinforcement products, has made a significant impact on the audio industry with their 15NDL76 loudspeaker. This 15-inch neodymium woofer is designed to deliver outstanding performance, making it a favored choice for professional audio applications.

One of the main features of the 15NDL76 is its lightweight neodymium magnet structure. This innovative design not only reduces the overall weight of the speaker but also enhances efficiency. The neodymium magnet provides a higher power-to-weight ratio compared to traditional ferrite magnets, allowing for greater output with less energy consumption. This is especially beneficial in touring applications where weight and performance are critical.

The 15NDL76 boasts a power handling capacity of 800 Watts, with a peak power handling of up to 3200 Watts. This capability ensures that the woofer can handle intense audio signals without distortion, making it perfect for high-energy environments such as live concerts and festivals. The speaker's frequency response ranges from 40 Hz to 4 kHz, offering deep bass and clear midrange frequencies, which are essential for reproducing a wide variety of musical genres.

A standout feature of the 15NDL76 is its remarkably low distortion at high sound pressure levels. This characteristic is achieved through the speaker's advanced venting system, which effectively reduces heat build-up during operation. The design promotes better airflow around the voice coil, preventing overheating and ensuring consistent performance even during extended periods of use.

Additionally, the speaker's cone is crafted from a specific blend of cellulose and other composite materials, resulting in enhanced rigidity while maintaining excellent damping properties. This meticulous construction contributes to the speaker's ability to produce accurate sound reproduction across a broad frequency spectrum. The cone design, combined with a high-excursion surround, allows for impressive bass response and dynamic range.

In terms of connectivity, the 15NDL76 features standard four-bolt mounting and a heavy-duty, dual 4-ohm voice coil allowing for versatile integration into various sound reinforcement systems. The speaker is compatible with a wide range of amplifiers, catering to the needs of diverse audio setups.

Overall, the B&C Speakers 15NDL76 is a powerful and efficient woofer, delivering exceptional sound quality with low distortion and high durability. Its advanced technologies and thoughtful design make it an ideal choice for audio professionals seeking reliability and performance in demanding environments.