B&C 12NCX 12" Neodymium Coaxial Speaker

Brand:| Model: 12NCX
The B&C 12NCX is based on a compact, lightweight neodymium magnet structure that is shared by the LF and HF components of the 12" coaxial speaker.
  • Neodymium magnet is light but powerful
  • Ventilated voice coil gap reduces power compression
  • 2.5" aluminum voice coil
  • Use with passive or active crossover (not included)
  • 400 watt continuous program power
  • 96 dB 1w/1m sensitivity (LF), 106 dB 1w/1m sensitivity (HF)
  • 70° nominal coverage
Part # 
Weight: 11 lbs.  
Ships in 3-10 business days
List Price$678.60
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Part # 294-686
Qty:  EA
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Product Details

B&C 12NCX 12" Neodymium Coaxial Speaker

The B&C Speakers 12NCX 12" coaxial speaker features a neodymium magnet, 2.5" voice coil, and die cast frame. The point source characteristics of the axially-mounted HF device offer considerable advantages in the area of coherency and consistent response. The 12NCX is rugged enough for incorporation into pro PA speakers, but high fidelity enough for critical studio monitor applications.

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)200 Watts
  • Power Handling (max)400 Watts
  • Impedance8 ohms
  • Frequency Response60 to 18,000 Hz
  • Sensitivity96 dB 1W/1m
  • Voice Coil Diameter2.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)59 Hz
  • DC Resistance (Re)5.8 ohms
  • Voice Coil Inductance (Le)1.2 mH
  • Mechanical Q (Qms)4.2
  • Electromagnetic Q (Qes)0.58
  • Total Q (Qts)0.51
  • Compliance Equivalent Volume (Vas)2.3 ft.³
  • BL Product (BL)12.8 Tm
  • Diaphragm Mass Inc. Airload (Mms)44g
  • Maximum Linear Excursion (Xmax)3 mm
  • Surface Area of Cone (Sd)522 cm²
Materials of Construction
  • Cone MaterialPaper
  • Voice Coil Wire MaterialAluminum
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter12.4"
  • Baffle Cutout Diameter11.2"
  • Depth6.6"
  • Bolt Circle Diameter11.6"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.18 ft.³
  • Sealed F399 Hz
  • Vented Volume3.7 ft.³
  • Vented F350 Hz
B&C 12NCX 12" Neodymium Coaxial Speaker
  • BrandB&C Speakers
  • Model12NCX
  • Part Number294-686
  • UPC844632002311
  • Product CategoryCoaxial Full-Range Speakers
  • Unit of MeasureEA
  • Product Rating
    (1 Reviews)
  • Weight11 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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in the Coaxial Full-Range Speakers product category.


B&C 12NCX 12" Neodymium Coaxial Speaker
B&C 12NCX 12" Neodymium Coaxial Speaker is rated 4.0 out of 5 by 1.
Rated 4 out of 5 by from Looking for a single point source? Here it is...It's nice to have friends that are both audio-crazy and rich. Otherwise, I would have never heard this excellent machine. Our friend / client is a musician that plays guitar and keyboard. He wanted full spectrum -stereo sound, high SPL, wide dispersion and above all, simplicity. He did not want to spend even three seconds plugging any cables. He wanted a full range stereo PA in one box. It had to be easy, fast and fit in his German coupe. Money was no object.We built a custom 2x12 cabinet for him and installed these with hand-built crossovers and QSC power and a small Mackie mixer. WOW!For simplicity of operation,it can't be beat. It rolls in, cranks up above head-level via a power-drill. All the cable connections are internal and permanent. He routinely plays in noisy 300-seat nightclubs using only two of these speakers for everything: backing tracks, keys, guitar, vocals, and the occasional guest percussionist. They are nearly ruler flat, have a beautiful transparent sound, project to the back of the room and are LOUD!I can't recommend these for everyone. However, for certain users and applications they would be mighty tough to beat. Considering the cost of commercial powered speakers and their limitations, the cost of these things might not be prohibitive. For those who want a portable system and know how to design and build, they are definitely worth trying. Wealthy Audiophiles excluded, working musicians with a smattering of technical know-how can construct and awesome portable PA with little more effort than building a regular cabinet. It isn't really that expensive when you add up the alternatives.
Date published: 2008-05-04

Product Q&A

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If your question requires design or troubleshooting information,
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B&C 12NCX 12" Neodymium Coaxial Speaker

Is there an optimized crossover design for this coaxial driver?

Perhaps it's included with the product documentation. It would seem silly for a manufacturer to sell a two-way driver without providing crossover details.
Asked by: Grizbeard
The manufacturer recommends a 1.5kHz, 12db 2-way crossover. I've linked a product below that would be suitable/comparable, with and without the "cabinet-ready" terminal plate.
Answered by: RussR
Date published: 2012-03-05

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