Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Custom-fit enclosure for 2000-07 Ford Focus hatchbacks (Charcoal)
Item # 236FF12CTN | MFR # FZX3500C12-TN
$449.99 Earn up to 450 Rewards points
Our take on the MTX ThunderForms by Crutchfield's John Pollard
Crinkled french fries, discarded receipts, old gum wrappers you probably have everything in the hidden corners of your vehicle except great bass. ThunderForm enclosures fill the nooks and crannies of your vehicle with low tones that stand out, but their factory look blends right in.
MTX engineers evaluate the "sonic signatures" of top-selling vehicles so they can design ThunderForms as custom acoustic matches. Each ThunderForm fits and blends inconspicuously into your vehicle, so you get great bass without losing any space. They're made of high-density polyethylene resin to curb resonances they deliver bass that's tight, hard-hitting, and way down low. The airtight enclosure provides the correct internal volume to yield optimum bass response.
This molded MTX ThunderForm comes loaded with a premium-quality 12" Terminator subwoofer. It installs in your 2000-07 Ford Focus hatchback in the driver's side rear panel. The enclosure is seamless and airtight, with the correct internal volume to yield optimum bass response from the subwoofers. Hardware is included.
- custom-fit subwoofer
- rugged enclosure fits in driver's side of hatch
- one 12" 4-ohm Terminator Series subwoofer
- high-density polyethylene enclosure
- power range 50-200W RMS
- frequency response 41-150 Hz
- warranty: 2 years
- Our 60-day money-back guarantee
What's in the Box:
- ThunderForm enclosure loaded with one 12" Terminator subwoofer
- Mounting hardware
- Installation instructions
Vehicle-Specific Custom Enclosure: This MTX ThunderForm enclosure is specifically designed to fit select 2000-2007 Ford Focus ZX5 and ZX3 models. Please refer to the Crutchfield Car Selector to confirm fit for your vehicle.
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 in the cargo area on the Driver's side. Note: The provided dimensions are taken at the widest points of the enclosure. Keep in mind that this enclosure is 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 one 4Ω, 12" MTX Terminator subwoofer.
Tools Required: The manual provides this list of required tools:
- Powered Screwdriver
- #2 Phillips Head Bit
- 6" Bit Extension
- Wire Cutters
- 5/16" Wrench
- Trim Panel Removal Tool
Note: The manual provided is for both the amplified and non-amplified versions of this ThunderForm. Some of the tools may not be needed for this non-amplified ThunderForm.
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 verify what’s in the box, 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.