B&C Speakers 12NBX100

A 12-Inch B&C Speaker Focused on Performance: Power, Compactness, and Neodymium Magnet

The B&C 12NBX100 belongs to the family of 12-inch (31 cm) woofers intended for demanding sound reinforcement systems, where high power handling, good sensitivity, and controlled size are sought. Its neodymium magnet helps keep the overall weight lower than a ferrite model with comparable performance, a valuable advantage for portable speakers, stage monitors, or transportable sound systems.

Applications: Sound Reinforcement, Monitors, and Compact Subwoofers

This driver is particularly suited for designing compact speakers and subwoofers when impactful bass and good low-mid clarity are desired. Its stated frequency response from 40Hz to 1.5kHz allows versatile integration: in two-way systems (with a compression driver/tweeter) or as a complement to a broader system, depending on the chosen crossover and enclosure. With a recommended enclosure of 40 liters tuned to 50Hz, it aims for an effective and usable response in live sound, mobile DJ setups, or installations, provided the cabinet and bass-reflex tuning are properly executed.

Design and Key Elements: Control, Excursion, and Mechanical Reliability

4.0-Inch (100 mm) Voice Coil: Handling and Control

Featuring a 4.0-inch (100 mm) voice coil, the 12NBX100 is designed to handle high power levels over time (1000W AES). This coil size promotes thermal endurance and stability under intensive use, a crucial aspect when the speaker operates in the bass range, where the required energy is highest.

Tuning Parameters: Fs 41Hz, Qts 0.22, and Recommended Enclosure

The Fs of 41Hz indicates the speaker's resonance frequency, useful for understanding its behavior in the low spectrum. A Qts of 0.22 suggests suitability for vented enclosures (bass-reflex type) with tight and efficient bass. The manufacturer's recommendation of a 40-liter enclosure tuned to 50Hz provides a clear baseline for coherent tuning, especially for compact, high-impact speakers.

Excursion and Suspension: Xmax 10.0mm, Accordion Surround, and Double Silicon Spider

The 10.0mm Xmax helps maintain output levels in the bass without losing mechanical control when the signal becomes demanding. The accordion surround, combined with a double siliconized spider, is designed for stability and centering retention to preserve the precision of cone movement and limit unwanted behavior at high levels.

Exponential Cone: Dynamic Response and Projection

The exponential cone contributes to an energetic character and projection by supporting efficient reproduction over the stated frequency range (40Hz to 1.5kHz). Depending on the overall speaker design (volume, tuning, internal damping, and crossover), this type of cone can enhance a sharp attack and strong presence in the low-midrange, useful for kick drums, bass, and bass drum impacts.

Technical specifications

Rackable	No	Type	Speakers
Category	sound reinforcement accessory

Brand / Model	B&C 12NBX100	Qts	0.22
Magnet	Neodymium	Xmax	10.0mm
Weight	8 kg	Recommended Enclosure	40 liters tuned to 50Hz
Power Handling	1000W AES	Surround	Accordion
Nominal Impedance	8 Ohms	Cone	Exponential
Sensitivity	96 dB (1W/1m)	Spider	Double siliconized
Frequency Response	40Hz to 1.5kHz	Overall Diameter	320 mm
Voice Coil Diameter	4.0 inches (100 mm)	Height	143 mm
Fs	41Hz