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MTX + Cerwin Vega Ultra-Compact 4-Channel Full-Range 6x8" Speaker System

2-Way Thunder Series Component System + 2-Way Thunder Series Coaxial System + Cerwin-Vega B4 4-Ch. Class-D Amplifier + TruConnex Amp Wiring Kit

MTX
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• 4 ohm: 80 watts x 4 chan.
• 1" Soft Dome Tweeter
• Polypropylene Cone and Rubber Surround
• Dual Zone , operate two separate devices to two separate stages (front vs rear)
• Ultra Compact High Density Aluminium Alloy Chassis
• Direct FET Power Mosfet Output Stage
• Dimensions: 4.02"W x 8.7"L x 1.4"H

Learn more about the thunder681_thunder68_b4_tc4kit84b

We apologize

This item has been discontinued

NVX - Worth the Envy - Direct to Consumer Car Audio

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Description


MTX brand icon

Authorized dealer

MTX Audio Thunder Component Speakers

MTX THUNDER681 Thunder Series Speakers

The MTX Audio Thunder Series Speakers will improve any stock stereo. Providing a rich full range to your car audio system, you won't miss any part of the frequency spectrum when listening to your music. The midwoofer has an extended low frequency range that will give you great bass reproduction even without a subwoofer. The tweeter can be mounted anywhere and give crisp and clear highs. With over 40 years of audio experience, MTX Audio makes sure and knows how to create quality audio in their products, and the Thunder Series is no exception!

Extended Low Frequency Range


Of course adding a subwoofer to your system will give you fantastic bass reproduction in your system, but with the MTX midwoofer's extended low frequency range, you will have a great bass response even without a subwoofer. For increased quality be sure to couple the speakers with an amplifier and notice the low frequency even more!


Tweeters

The tweeters are versatile and can be flush or surface mounted anywhere. With the swivel you can adjust the tweeters for imaging control. The crisp highs will give your music the clarity it deserves.



MTX THUNDER681

6" x 8" 2-Way Thunder Series Component System
Quantity: 1

General Features:

  • 6" x 8" Thunder Series 2-Way Car Component System
  • Power Handling:
    • Peak: 180 watts per set / 90 watts each side
    • RMS: 90 watts per set / 45 watts each side
  • Polypropylene cone
  • Concave cone design
  • Rubber surround
  • Extended low frequency reproduction for bigger, fuller sound
  • 2-way crossover with 2 position tweeter adjustment
  • 1" soft dome tweeter
    • Can be mounted anywhere to improve sound quality
  • 4 ohm impedance
  • Frequency Response: 46-20,000 Hz
  • Voice coil: 1"
  • Top-mount Depth: 2-1/2"
  • Sensitivity: 92dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

MTX THUNDER68

6" x 8" 2-Way Thunder Series Car Speakers
Quantity: 1

General Features:

  • 6" x 8" Thunder Series 2-Way Car Speakers
  • Power Handling:
    • Peak: 240 watts per pair / 120 watts each
    • RMS: 120 watts per pair / 60 watts each
  • Polypropylene Cone
  • Rubber surround
  • 1" silk dome tweeter
  • 4 ohm impedance
  • Frequency Response: 45-20,000 Hz
  • Top-mount Depth: 2-7/16"
  • Sensitivity: 92dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Cerwin-Vega B4

600W Bomber Series 4-Channel Class D Digital Amplifier
Quantity: 1

General Features:

  • Bomber Series 4-Channel Class D Digital Amplifier
  • RMS Power Rating:
    • 4 ohm: 80 watts x 4 chan.
    • 2 ohm: 150 watts x 4 chan.
    • Bridged, 4 ohm: 300 watts x 2 chan.
  • Ultra compact high density aluminium alloy chassis
  • Direct FET Power Mosfet Output Stage
  • IC audio driver provides superior overload protection
  • Dual Zone , operate two separate devices to two separate stages (front vs rear)
  • 2 or 4 Channel Operation
  • High-pass filter (front only): 25 - 250 Hz
  • Low-pass filter (rear only): 50 - 250 Hz
  • Bass Boost (rear only): 0 - 18 dB
  • Frequency Response: 10 - 35,000 Hz
  • Total Harmonic Distortion: 0.5%
  • Signal to Noise Ration: 85 dBA @1w
  • Damping Factor: >70 (50Hz @ 4Ω
  • Auxiliary for use when RCA connections are not available
    • For MP3 Players, iPhone or Android Smartphones, etc..
    • Only connect AUX OR RCA input, not both
  • Dimensions: 4.02"W x 8.70"L x 1.4"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
Check out the Cerwin-Vega B4 Owner's Manual


TruConnex TC4KIT-84B by Metra

8 Gauge Full Spec CCA Amplifier Wiring Kit for Systems up to 275 Watts
Quantity: 1

General Features:

  • 8 gauge Power Amplifier Installation Kit
  • Designed specifically for car audio systems up to 275 watts
  • Premium power and ground wire provides optimal power transfer
  • Twisted RCA audio interconnect cable engineered to the highest quality
  • Terminals are Nickel-plated for excellent signal transfer
  • ANL Fuse holder offers ideal protection
  • True-to-Gauge cables/wires meet or exceed the industry standard of copper required for the gauge size
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Package Includes:

  1. 17 ft. of 8 AWG Red power cable
  2. 3 ft. of 8 AWG Gray ground cable
  3. 16.40 ft. Blue 4-Channel RCA Audio Cables
  4. 17 ft. of Blue remote turn-on wire
  5. In-line mini ANL fuseholder
  6. 60 Amp ANL fuse
  7. Ring Terminals
  8. Ground Terminals
  9. Vinyl Cable Ties
  10. Screws
  11. Spade Terminals
  12. Grommets

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Specifications & Details


Front Speaker Specifications
Speaker Size
6" x 8" (also mounts in most 5" x 7" locations)
Design
2-way Component System
Tweeter Design
Dome
Tweeter Composition
Silk
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
180 watts
RMS Power Handling
90 watts
Sensitivity
92 dB
Frequency Response
46 - 20000 Hz
Impedance (Per Voice Coil)
4 ohm
Top-Mount Depth (Mounting Depth)
2-1/2"
Rear Speaker Specifications
Speaker Size (Rear)
6" x 8"
Design
2-way Coaxial
Shallow Mount Installation
No
Tweeter Design
Dome
Tweeter Composition
Silk
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
240 watts
RMS Power Handling
120 watts
Sensitivity
92 dB
Frequency Response
45 - 20,000 Hz
Impedance (per voice coil)
4 ohm
Top Mount Depth
2-7/16"
Speaker Grilles
No
Amplifier Power Specifications
RMS Power @ 4 ohms
80 watts x 4 channel
RMS Power @ 2 ohms
150 watts x 4 channel
Bridged RMS Power
300 watts x 2 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
600 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
0.5%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
25 - 250 Hz
Low-Pass Crossover Frequency
50 - 250 Hz
Signal-to-Noise Ratio
85 dB
Bass Boost
0 - 18 dB
Remote bass/level controller
No
Fan Cooled
No
CEA-2031 Compliant
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

THUNDER681_THUNDER68_B4_TC4KIT-84B

Weight:

17.53lbs

Internal SKU:

thunder681_thunder68_b4_tc4kit84b

Internal Product ID:

98898

Customer Ratings & Reviews


MTX + Cerwin Vega Ultra-Compact 4-Channel Full-Range 6x8

5 star
82%
4 star
14%
3 star
2%
2 star
2%
1 star
0%



Durability
4.9
Value
4.8
Features
4.9
Design
4.8
Usability
4.9

Customer Reviews

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great product

The following review is for XIV45, which is a part of the bundle you are viewing.

these rca's are really good and are really long. i have a 90 bronco and i ran them over the door to avoid any signal mixing and i cant complain at all

By sharkey on April 25, 2014

83 found this helpful


Great product

The following review is for XIV45, which is a part of the bundle you are viewing.

This simplifies the installation of multi channel amps while using premium materials

By Jb on March 18, 2013

82 found this helpful


great sound

The following review is for XIV45, which is a part of the bundle you are viewing.

Highly recommended these for the best signal for the best price

By jesse on September 16, 2014

78 found this helpful


Great amp great value sounds good with 4-5-inch Rockford fosgate speakers+ 1200watt Rockford mono amp. And. 2-12"Rockford. Subs it rocks.

The following review is for XIV45, which is a part of the bundle you are viewing.

Can't go wrong with Rockford fosgate bought it for my sons car sounds great; and would recommend this product.

By Roderick on December 19, 2013

76 found this helpful


Works as advertised.

The following review is for XIV45, which is a part of the bundle you are viewing.

>I got these to run my mids/high amp. Also got the single version and ran it to my sub amp.

>It is nice having full control over your audio setup.

>I am very impressed with the solid build on and quality on these cables.

>Easy to work with.

>I would definitely buy again. A+

By DirkaDirka on December 5, 2013

74 found this helpful


Perfect

The following review is for XIV45, which is a part of the bundle you are viewing.

They give rich sound. There long, and if you get certain amps you can get this with a discount. I recommend this to anyone who had a 4 channel or 5 channel amp.

By Julian on September 19, 2014

73 found this helpful


NVX > everything!!!

The following review is for XIV45, which is a part of the bundle you are viewing.

I can find no flaws with any of my NVX products! These RCA's are wonderful too! My 2008 Town & Country is the happiest vehicle ever! RCA's are strong, flexible and visually appealing... even though all of my wires are hidden! Sound quality is GREAT! NVX is the best!

By Eliseo on October 8, 2012

74 found this helpful


Nothing Fancy but it works well no noise

The following review is for XIV45, which is a part of the bundle you are viewing.

works very well so far no noise easy to run

By David on December 6, 2014

73 found this helpful


Great product

The following review is for XIV45, which is a part of the bundle you are viewing.

Inexpensive products built with quality worked better than more expensive brands no engine hum and quality connection.

By clifford on April 26, 2020 Checkmark Icon Verified purchase

49 found this helpful


Great rca wires

The following review is for XIV45, which is a part of the bundle you are viewing.

These wires came as part of my metraconnect set and proivide excellent quality for my 4 channel amp. Love NvX

By JeVaughn on January 2, 2016 Checkmark Icon Verified purchase

51 found this helpful




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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.