Description
The RCF MB15X351 is a premium 15-inch mid-bass transducer engineered for exceptional frequency response linearity and low distortion. Featuring a powerful neodymium magnet and an advanced 3.5” fiberglass voice coil, it offers outstanding power handling and efficiency. The Dual Forced Hyperventing System ensures optimal heat dissipation, minimizing power compression and enhancing reliability in high-output applications.
Product Specifications:
Nominal Diameter: 15" (381 mm)
Impedance: 8Ω
Program Power: 1400W
Continuous Power Handling: 700W
Sensitivity: 99 dB
Frequency Range: 40 Hz – 2500 Hz
Effective Piston Diameter: 12.99" (330 mm)
Max. Excursion Before Damage: 1.57" (40 mm)
Minimum Impedance: 6.5Ω
Voice Coil & Magnet
Diameter: 3.5" (89 mm)
Winding Material: Copper
Length: 0.75" (19 mm)
Layers: 2 (inside/outside)
Top Plate Thickness: 0.39" (10 mm)
Magnet Type: Ceramic
Dual Forced Hyperventing System: Yes
Thiele-Small Parameters
Resonance Frequency (Fs): 46 Hz
DC Resistance (Re): 5.40Ω
Qms: 6.70
Qes: 0.33
Qts: 0.31
BL Factor: 22.80 T·m
Moving Mass (Mms): 106 g
Vas: 114 liters
Sd: 0.090 m²
Max Linear Excursion (Xmax): 7 mm
Voice Coil Inductance @ 1 kHz (Le1k): 0.90 mH
Mounting Information
Overall Diameter: 15.47" (393 mm)
Bolt Circle Diameter: 14.61 - 14.8" (371-376 mm)
Bolt Hole Diameter: 0.28" (7 mm)
Front/Rear Mount Cutout: 13.94" (354 mm)
Volume Occupied by Driver: 0.18 ft³ (4.5 liters)
Size & Weight
Height: 6.57" (167 mm)
Weight: 18.08 lbs (8.2 kg)
Shipping Information
Package Dimensions (H x W x D): 8.23" x 17.28" x 17.09" (209 mm x 439 mm x 434 mm)
Package Weight: 20.94 lbs (9.5 kg)
Financing Options
Hassle-Free Financing Available
Get the gear you need now and pay over time. Perfect for working DJs, artists, and sound pros who need pro-grade speakers, lighting, and cases to stay competitive.
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- Acima, Synchrony, Progressive & Snap lease-to-own and financing options
- Fast approvals so you buy today and pay monthly
Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.