MTX Thunder40

Thunder Dome Series 4" 2-way speakers

Item #: 236THND40

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Was:$69.99

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Free Installation gear for most cars

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Thunder Dome Series

Speakers for the real world

MTX doesn't make speakers that only deliver the goods in a sound lab. These affordable MTX Thunder Dome Series Thunder40 4" coaxial speakers feature a durable polypropylene woofer cone and soft dome tweeter that are built to sustain the weather and wear that come with living in your car full-time.

Built to handle up to 35 watts RMS, these speakers will outshine your old factory speakers by a long shot, and MTX backs that up with a prorated 5-year warranty. Grilles are not included — factory grilles are suitable for most installations.

Highlights:

  • 2-way car speakers (pair)
  • 4" polypropylene cone with rubber surround
  • 1" silk dome tweeter
  • power range: 2-35 watts RMS (70 watts peak power)
  • frequency response: 75-20,000 Hz
  • sensitivity: 92 dB
  • impedance: 4 ohms
  • woofer mounting depth: 1-13/16"
  • grilles not included
  • warranty: 5 years (free repair or replacement for 2 years, prorated replacement for years 3 through 5)
  • Our 60-day money-back guarantee

Hands-on research

What's in the box?

Download owner's manual

  • Two 2-way speakers
  • Two 6" Lengths of speaker wire (each has female quick-slides on one end and bare wire on the other)
  • Eight 1" Self-tapping screws
  • 8 Speed clips
  • Cardboard template
  • Specifications printed on box

Features and Specs

General
Design 2-way
Tweeter Design 1" Dome
Tweeter Composition Silk
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 5 Years (3-5 Prorated)
Labor Warranty 5 Years (3-5 Prorated)
Specifications
Sensitivity 92 dB at 2.83 volts
Frequency Response 75 - 20k Hz
RMS Power Range (Watts) 2-35
Peak Power Handling (Watts) 70
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 13/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 3 13/16

Product Research

Features

Woofer Cones: The MTX Thunder Series speakers feature durable and rigid polypropylene woofer cones. Polypropylene is also resistant to the moisture and temperature extremes found in automotive applications.

Tweeters: Each speaker features a 1" treated silk dome tweeter. Silk is lightweight and great for high frequency extension and efficiency.

Warranty: MTX offers 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.

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.

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Get everything you’ll need to enjoy your new MTX Thunder40

Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car.
You may need speaker wire to connect your speakers to your amp or receiver.
Keep your speakers clean and dry. They compress to fit behind your speakers.
The right tools will help keep your installation simple and clean.
These speaker connectors are handy if you're running new speaker wire or if your speakers have oversized terminals.
If your stereo doesn't cut the deep bass from your full-range speakers, a set of bass blockers can help prevent distortion and give you cleaner bass too.
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