Expert Service 1-661-257-9993 [Hours]

MTX Audio RoadThunder Extreme Midbass Speaker - RTX658

200W Max (100W RMS) 6.5" RoadThunder Extreme Series Midbass Driver

In Stock
|
Click for
Special Offer

List price $69.95

You Save: $37.96 (54.27%)

Thanks , You Pay:

$31.99

with warranty

Order within 17 hrs 54 mins to ship 12/8

Arrives by Wednesday, Dec. 14 to zip 94107

60-Day Money-Back

Hassle Free Returns

365-Day Coverage

Warranty assistance for a year

Will this fit my ride?

Check Vehicle

Item Added to Cart

MTX Audio RoadThunder Extreme Midbass Speaker - RTX658

200W Max (100W RMS) 6.5" RoadThunder Extreme Series Midbass Driver

$31.99

Keep Shopping

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

$37.85

Add
Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

$18.99

Add
NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

$12.99

Add

Don't see the accessory you're looking for?
View all available accessories for the MTX Audio RoadThunder Extreme Midbass Speaker - RTX658.

Get FAST answers from customers ASK a Question See questions answers

Bundles with this Product

=

50% Off Speaker Adapters For Select 2005-Up GM Vehicles!

Save 50% on a pair of Speaker Adapters For Select 2005-Up GM Vehicles when you click the "add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

5.50

43797

1875

MTX Audio RoadThunder Extreme Midbass Speaker - RTX658

$31.99

+

50% OFF

Scosche SAGMHR634B

$10.99

Special Price $5.49 ($10.99 if purchased separately)

Scosche SAGMHR634B

• 6-1/2" or 6-3/4" Door Speaker Adapter
• For Select GM Vehicles
• Includes All Necessary Hardware
• Constructed of ABS Plastic

(Offer 1 of 1)

Combined Total Price

$37.48

You Save $5.50

MTX Audio Store

General Features:

  • 6-1/2" RoadThunder Series Mid-Bass Driver
  • Power Handling:
    • Peak: 200 watts each
    • RMS: 100 watts each
  • Recommended power range: 10 - 100 watts RMS
  • For OEM Replacement or Aftermarket Upgrade Use
  • Treated Paper cone material
  • Treated Foam speaker surround
  • High-temperature voice coil
  • Designed for maximum levels of SPL
  • Constructed with high quality materials
  • Frequency response: 136 - 6,500 Hz
  • Top-mount depth: 2-11/16"
  • Sensitivity: 94dB
  • 8 ohms impedance
    • Wire two speakers together in parallel for a 2 ohm impedance
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Individually

Speaker Specifications

Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Each Speaker
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6-1/2"
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
Midrange (Midwoofer)
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
N/A
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
N/A
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

N/A
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Hybrid Fiber Pulp
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Foam
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
200 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
94 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
136 - 6500 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
8 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
2-11/16"
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
2-13/16"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
5-1/2" x 5-1/2" 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
No
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

1

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.8
Features
4.6
Design
4.4
Usability
4.6
Jesus

Santa Ana, CA

Overall
Durability
Value
Features
Design
Usability
They sound great.

August 28, 2014

Wow I bought two of this speakers about a few days ago. Finally arrived last night and installed them this morning.more. Sound quality is amazing and no distortion. Definitely recommended for anyone who wants to replace those worn factory stock speakers.

25 of 30 found this helpful

Was this review helpful to you?

sound crew customizing

Trinidad and Tobago

Overall
Durability
Value
Features
Design
Usability
best deal

August 3, 2014

as usual, MTX products never fails to impress me, I've always been a true fanatic and this woofer is super loud and even under it RMS power rating it's still loud and great quality sound. i'll recommend this over any other woofers as I used other brands such as 18 sound, ciare, PRV audio, selenium even faital pro.

24 of 30 found this helpful

Was this review helpful to you?

Tito

Pleasantville nj

Overall
Durability
Value
Features
Design
Usability
Great purchase

May 18, 2012

I recommend this product because good in the sound is incredible.

24 of 30 found this helpful

Was this review helpful to you?

Julian

Blythe ,Ca

Overall
Durability
Value
Features
Design
Usability
replacement speakers

May 14, 2015

I have a 1990 jeep wrangler and one speaker on my center pod blew. When I bought and received the first speaker I found it wouldn't fit without modifications. So naturally I ordered this set of speakers and hooked it up to my small Rockford fosgate amp. I was impressed with the bass I got out of the speakers and their ability to hang with the fos. I recommend these and would buy them over again.

12 of 14 found this helpful

Was this review helpful to you?

SwampDonkey

Corsicana tx

Overall
Durability
Value
Features
Design
Usability
51/2 mids

January 21, 2016

Very good midst packaged as they were described very good product fast shipping

0 of 0 found this helpful

Was this review helpful to you?

Accessory Tools and Products

Accessories added

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $37.85

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $18.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Belva Five Piece Installer's Panel Removal Tool Kit

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $11.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $7.99

Encore Universal Four Door Power Door Lock Kit

Add Power Door Locking and Unlocking while you have the Door Panels removed

Your Price $29.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $12.99

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $10.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $7.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

XTC 6-1/2" Round Large Frame, Shallow Foam Speaker Baffles

Creates a tight seal behind speaker for enhanced audio quality.

Your Price $13.84

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $11.99

Browse 1 question and 2 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
$$$$$$ fit my tuck up grade
sam delong on Oct 6, 2016
"I'm a true believer on all MTX products" and I also need this to finish a project that I'm currently doing
hemant s on Aug 4, 2014

Product Summary

Manufacturer

Model Number

RTX658

UPC

715442440047

Weight

3.50lbs

Internal SKU

rtx658

Internal Product ID

43797

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: MTX Audio RoadThunder Extreme Midbass Speaker - RTX658