Get No Low End Distortion With the RCF MB12X301 Mid-Bass Replacement Speaker - 12 Inch

The MB12X301 is designed to provide an excellent frequency response linearity with very low distortion. A strong magnetic structure guarantee dynamic and precision. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling. M-roll surround, exponential cone geometry and spider design offer great linearity and precise reproduction.


  • 3-inch, fiberglass inside/outside copper voice coil
  • 1000 W continuous program power handling
  • 98 dB Sensitivity
  • 45 Hz – 2.5 kHz Frequency range
  • Dual Forced Hyperventing System
  • M-roll surround and exponential cone geometry


SPECIFICATIONS
  • Nominal Diameter: 12 inch / 305 mm
  • Program Power: 1000 W
  • Sensitivity: 98 dB
  • Effective Piston Diameter: 260 mm / 10.24 inch
  • Minimum Impedance: 6.7 ohms
  • Voice Coil Winding Material: Copper
  • Number of Layers: 2
  • Top Plate Thickness: 10 mm / .39 inch
  • Surround Material: Polycotton
  • Magnets: Ceramic
  • Spider: Single
  • Rated Impedance: 8 ohm
  • Power Handling Capacity: 500 W
  • Frequency Range: 45 - 2500 Hz
  • Max. Excursion Before Damage: 39 mm / 1.54 inch
  • Voice Coil Diameter: 3 inch / 76 mm
  • Voice Coil Length: 17 mm / .67 inch
  • Kind of Layers: Inside / outside
  • Cone Design: Curved
  • Surround Design: M-roll

Thiele - Small Parameters

  • Resonance Frequency (FS): 50 Hz
  • Mechanical Factor: 9.00
  • Total Factor: .29 Qts
  • Effective Moving Mass (MMS): 57 G
  • Effective Piston Area (SD): .05 m2
  • Voice Coil Inductance at 1 KHz (LE1K): .60 mH
  • DC Resistance (RE): 5.4 ohm
  • Electrical Factor (QES): .30 Qes
  • BL Factor (BL): 18.00 T x m
  • Equivalent Cas Air Loaded (VAS): 70 liters
  • Max. Linear Excursion (XMAX): 6 mm
  • Half-Space Efficiency (EFF): 2.8 percent

Mounting Information

  • Overall Diameter: 320 mm / 12.6
  • Bolt Hole Diameter: 7 mm / .28 inch
  • Rear Mount Baffle Cut-Out: 284 mm / 11.18
  • Bolt Circle Diameter: 293-304 mm / 11.54-11.97
  • Front Mount Baffle Cut-Out: 282 mm / 11.1
  • Volume Occupied by the Driver: 2.2 liters / .09 ft

Standard Compliance

  • CE Marking: Yes

Size

  • Weight: 7 kg / 16.69 pounds
  • Diameter: 320 mm / 12.6 inches
  • Height: 143 mm / 5.63

Shipping Information

  • Package Width: 360 mm / 14.17 inches
  • Package Height: 210 mm / 8.27
  • Package Weight: 8.51 kg / 18.76
  • Package Depth: 360 mm / 14.12

Manufacturer: RCF
Model: MB12X301
SKU: I431725-N-3-WHXE

We are Chuck Levin's Washington Music Center

Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.

Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.


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Chuck Levin's Washington Music Center

Wheaton, MD, United States
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