Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Warranty

Features

Shallow Mount Design: The MTX Thunder Flat Piston Round (FPR) subwoofers are designed for applications where space is a premium. They are optimized to perform best in a sealed enclosure, no matter what type of music you listen to. The recommended enclosure design (0.7 cubic feet) was tested by the MTX engineering team. The subwoofer uses a polypropylene cone with an aluminum dustcap.

Specifications:

• Fs (resonant frequency): 35 Hz
• Qms (mechanical Q at Fs): 5.89
• Cms (suspension compliance): 0.0861 mm/N
• Mms (diaphragm/coil mass, including acoustic load): 240 g
• Rms (suspension's mechanical resistance): 8.963 kg/s
• Vas (equivalent compliance volume): 17.36 liters
• Xmax (maximum linear peak): 13 mm
• D (cone diameter): 8.622"
• Sd (cone area): 376.7 cm² (0.03767 m²)
• Vd (peak displacement volume): 0.489 liters
• Qes (Electrical Q at Fs): 0.854
• Re (voice coil DC resistance): 1.880 Ω
• Bl (force factor): 10.78 Tm
• Qts (total Q at Fs): 0.746
• η₀ (reference efficiency): 0.084%

Warranty

5 Year Warranty Terms: This product carries a 5-Year Prorated Warranty with the following terms:

• Years 1-2: Products found to be defective in materials or workmanship during the first two years will be, at Mitek's option, repaired or replaced by Mitek at no charge. The warranty period does not renew, but continues on from the original date of purchase.
• Years 3-5: The purchase price of an item which becomes defective after the first two years and prior to the end of the warranty period will be prorated and credited toward the purchase of a new MTX product. The amount of proration is determined by dividing the original purchase price by the number of months in the warranty period (60), then multiplying the result by the number of months remaining in the warranty period.