About the MTX ThunderForms

Product highlights:
- black custom-fit subwoofer enclosure
- mounts under back seat
- high-density polyethylene resin enclosure
- two 10" Terminator 8-ohm subwoofers (4-ohm total impedance)
- frequency response: 29-160 Hz
- power range: 100-400 watts RMS (800 watts peak power)
- sensitivity: 85 dB
- warranty: 2 years
- MFR # F250X00BK20-TN
- Item # 236F250BTN
- California customers: Please click here for your Proposition 65 WARNING.
What's in the box:
MTX ThunderForms owner's manual
If you need assistance accessing this owner's manual, please give us a call.- ThunderForm enclosure loaded with two 10" Terminator subwoofers
- Mounting hardware
- Installation instructions
More details on the MTX ThunderForms

Product Research
Features
Vehicle-Specific Custom Enclosure: This MTX ThunderForm enclosure is specifically designed to fit select 2000-2014 Ford F-250 Super Cab pickups.
Enclosure: The ThunderForm enclosure is made of molded high-density polyethylene resin, which dampens resonance and is rigid enough to resist flexing. It is an acoustic suspension (sealed) chamber.
Mounting Location: This enclosure is designed to mount under the rear seat. The jack stays in the factory location; the jack tools are relocated to the center compartment under the enclosure. Note: The provided dimensions are taken at the widest points of the enclosure. Keep in mind that these enclosures are custom made to fit in this particular vehicle, so the enclosure will fit properly in only one specific location.
Woofers: The ThunderForm enclosure is loaded with two 8Ω, 10" MTX Terminator subwoofers. The subwoofers are wired in parallel to a single terminal, presenting a 4Ω load to your amplifier.
Tools Required: The manual provides this list of required tools:
- Powered Screwdriver
- #2 Phillips Head Bit
- 6" Bit Extension
- 5/16" Wrench
- Wire Cutters
The MTX ThunderForms replaces these items:
- Rugged black enclosure installs under the rear seat
- two 8-ohm 10" Thunder 4500 carbon-filled polypropylene woofers
- single 4-ohm terminal
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