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Car Subwoofers > 
MTX > 
Item#: 9SIA0ZX0TS4425

15" Dual 4O 250W RMS Subwoofer

  • Dual Voice Coil 4 Ohm
  • 20 Hz - 150 Hz
  • Sensitivity 87.9 dB
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Road Thunder subwoofers are the continued evolution of high performance subwoofers from MTX. Designed with one goal in mind, to be loud, these subwoofers offer extreme performance in an economical package. Based on the TR55 series subwoofer, the Road Thunder subwoofers use a larger voice coil and motor structure to generate more output. Available in 4 sizes, RT subwoofers are an ideal solution for anyone looking to add bass to their system.

  • Polypropylene Cone
  • Spider Plateau Venting for Targeted Mechanical Cooling of the Voice Coil
  • Asymmetrical Linear Drive System for Proper Linear Movement
  • 2" Voice Coil for Higher Powered Handling
  • 8 Layer Aluminum Voice Coil

Learn more about the MTX Road Thunder RTS15-44


Road Thunder Series
Road Thunder RTS15-44


Subwoofer Size
Voice Coil


Peak Power
RMS Power
Frequency Response
20 Hz - 150 Hz
87.9 dB
4 Ohm
59.88 cu. in.
Sealed Box Volume
1.5 cu ft
Ported Box Volume
2.50 cu ft
Mounting Depth
6.375" (16.19 cm)
Cut-Out Dimensions
13.687" (34.77 cm)


Number of Woofer

Manufacturer Warranty

5 Year Limited Warranty

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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Home > 
Electronics > 
Car Electronics > 
Car Subwoofers > 
MTX > 
Item#: 9SIA0ZX0TS4425
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