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MTX Thunder68

Thunder Dome Series 5"x7"/6"x8" 2-way speakers

Item #: 236THND68

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5 Reviews | Ask Questions

Installation gear for most cars

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Real world speakers

MTX doesn't make speakers that only deliver the goods in a sound lab. These affordable Thunder68 5”x7” 2-way speakers feature a durable polypropylene cone with a rubber surround that'll shrug off the weather and wear that come with living in your car full-time. Depending how low you need to mount the coaxials, you can swivel the soft dome tweeters up to 15 degrees in your direction to really dial in the stereo imaging.

While no car speaker can produce bass like a large subwoofer, these speakers truly shine in the lower frequencies. With up to 60 watts RMS of power handling, you can add to their impressive depth and richness when you power them with an outboard amplifier. MTX's unique prorated 5-year warranty makes these Thunder68 speakers a smart buy.


  • 5"x7"/6"x8" 2-way car speakers (pair)
  • polypropylene cone with rubber surround
  • 1" pivoting silk dome tweeter
  • power range: 2-60 watts RMS (120 watts peak power)
  • frequency response: 45-20,000 Hz
  • sensitivity: 92 dB
  • impedance: 4 ohms
  • woofer mounting depth: 2-7/16"
  • 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

Why replace your car's original speakers?

The speakers that originally came in your car were made from inexpensive materials, designed to create acceptable sound at the lowest possible cost to the manufacturer. If you love music, you deserve better. Name-brand aftermarket speakers deliver fuller, richer sound with considerably more detail and nuance, and they're capable of playing louder and cleaner than factory speakers. Connect new speakers to your factory radio and you'll get the best possible sound from your dealer-equipped system. Pair them up with a new car stereo for a level of enjoyment that can rival a high-fidelity home audio experience.

MTX Thunder68 Reviews

Average Customer Review:

5 Reviews

Fits like they said....

Written by: Chucknwind from Minnesota on December 8, 2015

2007 Ford F-150
Crutchfield Customer Review (What's this?)

It was great ordering something that said it was going to fit in and actually did fit. Well done Crutchfield!

Pros: Pig tails

Cons: None

New speakers

Written by: Tom from Colorado on October 18, 2015

1997 Ford F-350
Crutchfield Customer Review (What's this?)

They sound much better than the stock speakers.

Pros: The free wiring pigtail

Cons: They were not a direct bolt in. I had to drill the holes in the speaker a little to get them to line up.


Written by: 1937JD from Texas on August 28, 2015

Crutchfield Customer Review (What's this?)

With "thunder" in the name I expected more bass from these speakers. Treble is reasonable and I like the ability to put some direction to the tweeters. The woofers seem to have a reasonable amount of travel, but the bass is frankly weaker than the stockers I removed from my Mustang (basic 4 speaker system).



Great speakers

Written by: AGM from North Carolina on August 24, 2015

2010 Ford Mustang
Crutchfield Customer Review (What's this?)

I bought these speakers to replace the factory speakers in my 2010 Mustang because I wanted more bass response in my system but wanted to avoid installing a sub if possible. Overall I am extremely pleased with these speakers. The bass is much improved and I now get the thump that I want. It doesn't compare to the bass you get from an actual subwoofer, but I was not looking for a sound that rattled my teeth or shook my rear view mirror. Installed these in my front doors and liked them so much I have also installed a set in the rear deck. Only issue was that the mounting holes for the speaker didn't quite line up with the screw holes in the door so I had to drill new door holes, but that was minor.

Pros: Excellent bass at a good price. Speaker components look well made.

Cons: None

solid speakers

Written by: DisGuy from Rockville, Maryland on January 25, 2015

2000 Dodge Caravan
Crutchfield Customer Review (What's this?)

A solid pair of speakers and they were well packaged. I installed em the other day and they have a good range and nice mid-west so great for bass on a budget

Pros: Solid speakers Good bass Clean mids and highs Well constructed Well packaged

Cons: None as I can see

Hands-on research

What's in the box?

Download owner's manual

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

Features and Specs

Design 2-way
Tweeter Design 1" Dome
Tweeter Composition Silk
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 5 Year (3-5 Prorated)
Labor Warranty 5 Year (3-5 Prorated)
Sensitivity 92 dB at 2.83 volts
Frequency Response 45 - 20k Hz
RMS Power Range (Watts) 2-60
Peak Power Handling (Watts) 120
Impedance (Ohms) 4
Top-mount Depth (Inches) 2 7/16
Bottom-mount Depth (Inches) N/A

Product Research


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. The tweeters pivot slightly within their housings (approximately 15° in any direction), so they can be angled toward the listeners to improve imaging.

Mounting Applications: MTX describes this speaker as a 6x8/5x7; it fits examples of both applications, but the hole spacing does not match Ford 6x8 applications and may require drilling new screw holes. Please check the Crutchfield Vehicle Selector to confirm fit.

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 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.

Customer Q&A