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Thunder Dome Series 3-1/2" 2-way speakers

Item #: 236TDX35

7 Reviews

This item is no longer available.

Original Price: $39.99 pair

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Value and performance

If you're looking to upgrade from your factory speakers, MTX designed their Thunder Dome series speakers for efficiency, so they'll give you plenty of performance even when powered by your factory stereo. And MTX made sure that all these speakers deliver extended bass response, from the modest 3-1/2" to the big bruiser of a 6"x9". Best of all, they're protected by MTX's unique 5-year warranty.

Music lovers, rejoice

The TDX35 3-1/2" 2-way speakers deliver a surprisingly full sound, courtesy of a polypropylene woofer cone with a butyl rubber surround. The 3/4" PEI dome tweeter does a great job of broadcasting the high frequencies through your vehicle, bringing out the details you might otherwise miss. These speakers handle up to 25 watts RMS, so you crank the tunes up and still get clean sound. Grilles are not included – factory grilles are appropriate for most installations.

Product Highlights:

  • 2-way 3-1/2" speakers (pair)
  • polypropylene woofer with butyl rubber surround
  • 3/4" PEI dome tweeter
  • power range: 2-25 watts RMS (50 watts peak power)
  • frequency response: 83-20,000 Hz
  • sensitivity: 92 dB
  • depth: 1-7/16"
  • warranty: 5 years (free repair or replacement for 2 years; prorated replacement for years 3 through 5)
  • Our 60-day money-back guarantee

MTX TDX35 Reviews

Average Customer Review:

7 Reviews


Written by: wayne l from prince george on August 14, 2013

1996 Oldsmobile Cutlass Ciera
Crutchfield Customer Review (What's this?)

the quality and fit of these speakers is only surpassed by the professionalism of the crutchfield company itself. future purchases are a certainty.

Pros: great product provibed by an excellent company.

Cons: no local walk in store.

mtx tdx35

Written by: Dave McCoy from Antioch Ca on July 8, 2013

Crutchfield Customer Review (What's this?)

Spekers are just as expected, fit perfect and sound great

Pros: I like them

Cons: none

Easy replacement for 2013 Grand Cherokee dash

Written by: Andy M from Commerce, MI on June 8, 2013

Crutchfield Customer Review (What's this?)

Using the included free wiring adapter Item# 12071039 this was a 10 minute plug and play swap. No problems at all.



Incredible imporvement

Written by: MB from Ann Arbor , MI on May 25, 2013

2003 Saab 9-3
Crutchfield Customer Review (What's this?)

I replaced the OE dash 3.5" speakers in an 03 Saab 9-3 with these. This made a huge sound improvement and these speakers can crank it out. There was some popping noise for the 1st tem minutes but then it went away.

Pros: Efficient

Cons: None

dash speakers

Written by: Mikes R from Chicago, IL on April 25, 2013

2009 Dodge Ram 1500
Crutchfield Customer Review (What's this?)

Sound great and fit was good

Pros: Great sound

Cons: none


Written by: DarbaQ from SanDiego on April 14, 2013

1987 Volkswagen Jetta
Crutchfield Customer Review (What's this?)

Good fit ,nice little speakers

Pros: Good fit ,rocken little speakers

Cons: None

Great buy for the money

Written by: MF from Hot Springs AR on March 24, 2013

Crutchfield Customer Review (What's this?)

Installed these speakers in the dash of a 04 Ram pickup equipped with factory infinity system. The truck had the factory RB1 Navigation stereo head unit made by Alpine which I wanted to keep so I looked for speaker replacement to get a better sound,. I went with Infinity reference for the doors and these for the dash. The factory Infinity amp puts out 2 ohm and these are 4 ohm speakers. Now you can run a wire from pos to neg to get them in parallel for a 2 ohm load but I hooked them up as is first to see how loud they would be. They are LOUD. A 2 ohm load would be louder but they are very loud as they stand. Very clear highs, good sound reproduction, perfect for factory sound upgrades.

Pros: Great price, looks well made, perfect for factory sound upgrades

Cons: Sound is a little metalic, sharps are a little too sharp, not very good for mids reproduction.

Hands-on research

What's in the box?

Download owner's manual

  • Two 3-1/2" Coaxial speakers
  • Two 6" Lengths of speaker wire (each has female quick-slides on one end and bare wire on the other)
  • Cardboard template
  • Warranty information
  • Specifications printed on box

Features and Specs

Design 2-way
Tweeter Design 3/4" Dome
Tweeter Composition PEI
Woofer Composition Polypropylene
Woofer Surround Butyl rubber
Parts Warranty 5 Years (3-5 Prorated)
Labor Warranty 5 Years (3-5 Prorated)
Sensitivity 92 dB at 2.83 volts
Frequency Response 83 - 20k Hz
RMS Power Range (Watts) 2-25
Peak Power Handling (Watts) 50
Impedance (Ohms) 4
Top-mount Depth (Inches) 1 7/16
Bottom-mount Depth (Inches) 1 9/16
Cutout Diameter or Length (inches) 3

Product Research


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

Butyl Rubber Surrounds: The butyl rubber surrounds dampen unwanted harmonic distortion while maintaining linear geometry under extreme conditions. This leads to less distortion, superior frequency response, and superior durability.

PEI Tweeters: Each speaker features a 3/4" PEI (Poly-Ether-Imide) dome tweeter; PEI is a polymer film that produces a wide soundstage for superior imaging.

Warranty: Although the speaker reviewed and measured (taken from our first shipment) included information indicating a 1 year warranty, MTX recently changed to 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.