The 38cm 15“ 250W RMS 4Ω single voice coil MTX RT15-04 subwoofer is full featured: long throw excursion, rubber suspension, polypropylene cone with embossed MTX logo, large magnetic structure, extra large 50mm 2“ voice coil, SPV cooling technology, ALDS technology, etc. Considering the price, it's a feat.

• Long Throw suspension for low distortion and high power handling
• One-piece cone with embossed MTX logo for the look
• Thick sheet metal frame (1mm) for more rigidity
• Large eXtra magnetic structure (145x30mm) for more power handling
• 50mm voice coil for more reliability
• Wires braided in the spider for more reliability
• Spider eXtra large for more Xmax
• Push connectors for better contact
• SPV technology for coil cooling
• ALDS technology for reliability and for low level detail and high level power handling

• Subwoofer Diameter: 38cm 15"
• Peak power: 900W
• RMS power: 300W
• Sensitivity: 94.7dB/2.83v/1m
• Impedance: 4Ω
• Response: 18Hz - 500Hz
• Depth: 16.3cm

• Fs : 20,0 Hz
• Re : 3,60 Ω
• Z : 4 Ω
• Qms : 6,07
• Qes : 0,52
• Qts : 0,48
• Vas : 223 liters
• Mms : 263 grams
• Cms : 231 mm/N
• Bl : 15,3 N/A
• Sd : 830 cm2
• Vd : 1,162 liters
• Xmax : 14,5 mm
• Prms : 300 Watts
• SPL 2,83V/1m : 94,7dB