• 113822_RCF-12_-Mid-Bass-Woofer-High-Efficiency-Replacement-Driver-_-MB12G301_ALT01sqr
  • 113822_RCF-12_-Mid-Bass-Woofer-High-Efficiency-Replacement-Driver-_-MB12G301_ALT02sqr
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RCF 12" Mid-Bass Woofer High Efficiency Replacement Driver | MB12G301

RCF 12" Mid-Bass Woofer High Efficiency Replacement Driver | MB12G301

SoundPro Item: 113822 | Part Number: MB12G301

$269.00
$389.00 $269.00
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MSRP: $389.00 | MAP: $269.00

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  • Fiberglass Inside/Outside Voice Coil Construction For Efficient Power Transfer
  • Curved Exponential Cone Geometry Maintains Linearity Across The Passband
  • Polycotton M-Roll Surround Delivers Controlled Excursion And Low Distortion
  • 8 Ohm Rated Impedance Compatible With Standard Professional Amplifier Loads
  • CE Compliant Construction Meets Regulatory Requirements For Pro AV Installs
  • Published Thiele-Small Parameters Support Accurate Enclosure Modeling
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The RCF 12" mid-bass woofer series is engineered for professional loudspeaker builders, cabinet designers, and system integrators who need a reliable, high-efficiency driver for mid-bass duties in touring and installed sound applications. Each driver in the range delivers a curved exponential cone geometry paired with polycotton surround construction to maintain precise linearity across the operating bandwidth. The fiberglass former and inside/outside layered voice coil design allow the cone assembly to manage demanding power loads while keeping moving mass in check, preserving the transient accuracy required in full-range and bi-amped system configurations.

These drivers are well suited for replacement work in existing RCF-based enclosures as well as new custom cabinet builds where engineers need verified Thiele-Small parameters to model alignment accurately. The consistent 12" nominal diameter and shared overall form factor across the family simplify integration into standard baffle configurations, while the range of available power handling and magnetic structure options lets integrators select the specific headroom and efficiency profile their system demands. CE compliance confirms the series meets regulatory requirements for professional installation across applicable markets.

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Specifications

Certifications
Safety Agency
CE compliant
Audio
Nominal Diameter
12" / 305 mm
Rated Impedance
8 ohm
Minimum Impedance
7.2 ohm
Program Power
800 W
Power Handling Capacity
400 W
Sensitivity
98.0 dB
Frequency Range
50 - 3000 Hz
Effective Piston Diameter
260 mm / 10.24"
Thiele-Small Parameters
Resonance Frequency (Fs)
53 Hz
DC Resistance (Re)
5.40 ohm
Mechanical Factor (Qms)
4.70 Qms
Electrical Factor (Qes)
0.28 Qes
Total Factor (Qts)
0.27 Qts
Bl Factor
17.00 T x m
Effective Moving Mass (Mms)
48.0 g
Equivalent Cas Air Loaded (Vas)
72.0 liters
Effective Piston Area (Sd)
0.050 m2
Max. Linear Excursion (Xmax)
6 mm
Max. Excursion Before Damage
38 mm / 1.5"
Voice Coil Inductance @ 1kHz (Le1k)
0.70 mH
Half-Space Efficiency (Eff)
3.69%
Construction
Voice Coil Diameter
3.0" / 76 mm
Voice Coil Winding Material
Aluminum
Voice Coil Length
16 mm / 0.63"
Number Of Layers
2
Kind Of Layers
Inside/Outside
Top Plate Thickness
4 mm / 0.16"
Cone Design
Curved
Surround Material
Polycotton
Surround Design
M-roll
Magnets
Ceramic
Spider
01
Dimensions
Overall Diameter
320 mm / 12.6"
Height
146 mm / 5.75"
Front Mount Baffle Cut-Out
282 mm / 11.1"
Rear Mount Baffle Cut-Out
284 mm / 11.18"
Bolt Circle Diameter
294-304 mm / 11.57-11.97"
Bolt Hole Diameter
7 mm / 0.28"
Volume Occupied By Driver
2.6 liters / 0.1 ft3
Weight
Product Weight
7 kg / 15.43 lbs
Shipping
Package Height
210 mm / 8.27"
Package Width
360 mm / 14.17"
Package Depth
360 mm / 14.17"
Package Weight
8 kg / 17.64 lbs

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