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B&C 8CX21 8" Professional Coaxial Speaker 100 x 100 8 Ohm

Brand:|Model: 8CX21|Part # 294-5763
The B&C 8CX21 8" coaxial speaker's optimized driver alignment delivers the coherency and focus expected from a point source design.
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List Price$290.20
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Part # 294-5763
  • Coaxial HF driver with 1.4" voice coil, polyester diaphragm, and 100° nominal coverage
  • High-energy ferrite magnets on LF and HF components
  • Copper-wound 2" woofer voice coil ensures good power handling
  • 2.2 kHz recommended crossover point
  • Use with passive or active crossover (not included)

Product Details

B&C 8CX21 8" Professional Coaxial Speaker 100 x 100 8 Ohm

B&C's 8CX21 8" coaxial loudspeaker produces generous amount of low-distortion output despite its compact form factor. The 8CX21 offers resolution and accuracy that are suitable for professional "fill" loudspeakers, stage monitor wedges, studio monitors, or high-efficiency home audio systems. Power handling is 400 watts continuous program, which combined with the driver's high efficiency results in very good maximum output.

The 8CX21's ceramic ferrite LF/HF motor, polyester diaphragm HF driver, and FEA-optimized design produce high output and minimal distortion. In addition to the superior articulation and accuracy of coaxially aligned drivers, the 8CX21 requires very little baffle area compared to separate LF and HF components.

Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)200 Watts
  • Power Handling (max)400 Watts
  • Impedance8 ohms
  • Frequency Response75 to 20,000 Hz
  • Sensitivity94 dB 1W/1m
  • Voice Coil Diameter2"
Thiele-Small Parameters
  • Resonant Frequency (Fs)74 Hz
  • DC Resistance (Re)5 ohms
  • Voice Coil Inductance (Le)1.2 mH
  • Mechanical Q (Qms)4.1
  • Electromagnetic Q (Qes)0.39
  • Total Q (Qts)0.36
  • Compliance Equivalent Volume (Vas)0.55 ft.³
  • BL Product (BL)11.5 Tm
  • Diaphragm Mass Inc. Airload (Mms)21g
  • Maximum Linear Excursion (Xmax)5 mm
  • Surface Area of Cone (Sd)220 cm²
Materials of Construction
  • Cone MaterialCoated Paper
  • Voice Coil Wire MaterialCopper
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8.8"
  • Baffle Cutout Diameter7.4"
  • Depth5.3"
  • Bolt Circle Diameter8.3"
  • # Mounting Holes8
B&C 8CX21 8" Professional Coaxial Speaker 100 x 100 8 Ohm
  • BrandB&C Speakers
  • Model8CX21
  • Part Number294-5763
  • UPC848864008806
  • Product CategoryPro Coaxial Full-Range Speakers
  • Unit of MeasureEA
  • Weight10.5 lbs.
  • California Prop 65

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

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B&C 8CX21 8" Professional Coaxial Speaker 100 x 100 8 Ohm

Product Q&A

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B&C 8CX21 8" Professional Coaxial Speaker 100 x 100 8 Ohm

Do you have plans for a good designed DIY crossover for these? I'm thinking about using them for small stage wedges ...

Asked by: rock_mumbles
We do not offer any plans although B&C makes a specific crossover for this model called the XO-1. You may be able to find these or their schematics for a proper design.
Answered by: MattP
Date published: 2014-12-16

Do you have the B&C XO-1 crossover for this coaxial?

Asked by: Hollywood11
Unfortunately we do not but if you wanted to email or call our sales department we can see about a possible special order. or 800.338.0531 x 2.
Answered by: MattP
Date published: 2013-09-17
  • 2016-02-09T06:57CST
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