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6.5" 100-Watt RMS 8Ω Midbass Driver

Professional Style Drivers

The Road THUNDER Extreme Series uses PA system technology to bring concert level sounds to your ride includes professional style bullet tweeters and mid bass drivers designed to deliver exceptional volume and frequency response.

The RTX658 is a 6.5" driver designed to specifically produce mid bass frequencies. This type of speaker is ideal for use in installations that include subs producing high amounts of low frequency bass. The mid bass driver fills in the sound frequencies that the subwoofer does not.

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RTX658 Speaker

Crank It Up

Are you looking to play your music loud? If so, then you'll want to have the Road THUNDER Extreme Series, which use PA System Technology to bring concert level sounds to your ride. Professional style bullet tweeters and midbass drivers designed to deliver exceptional volume and frequency response. And, Believe us- this incredibly efficient series will give you PLENTY OF VOLUME if you feed it with some SERIOUS POWER!


RTX658 Speaker

RoadThunder Extreme RTX658 Key Features

  • High Efficiency Treated Paper Cone
  • High Sensitvity for High SPL
  • Single 8Ω Impedance Voice Coil

Dimensions & Details


  • A - Speaker Total Diameter:              6.50" (165mm)
  • B - Speaker Mounting Diameter:     5.66" (143.64mm)
  • C - Speaker Total Depth:                   2.91" (73.90mm)
  • D - Speaker Mounting Depth:          2.64" (67.06mm)

What's in the Box

  • Loudspeaker Single
  • Technical Data Sheet


  • Impedance:
  • RMS Power (Watts): 100
  • Sensitivity: 94.0dB
  • Frequency Response: 136Hz - 6.5kHz
  • Cone Material: Treated Paper
  • Grille Included: No
  • Woofer Mounting Depth: 2.64"
  • Crossover: NA
  • Cut Out Diameter: 5.65"
  • Outside Diameter: 6.5"
  • Warranty Period: 12 months from date of purchase


Returns & Warranty

30-Day Money-Back Guarantee

At MTX Audio, we are serious about sound®. Therefore, if you are not "blown away" with your purchase, for any reason, you can return any items purchased directly from that are complete and like new within 30 days. Products purchased from authorized MTX retailers must be returned through that same retailer. Products purchased through non-authorized MTX retailers may not be returned.

About Returns
Warranty Information

MTX products purchased in the USA from an authorized MTX dealer are guaranteed against defects in material and workmanship for the period of time specified below, the warranty period begins the day the product is purchased by the end user. This warranty is limited to the original retail purchaser of product and extends only to products purchased from authorized MTX resellers. Product found to be defective during that period will be repaired or replaced by MTX at no charge.

About Our Warranty