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140W Peak (70W RMS) 5-1/4" 35W Terminator Series Component Speakers

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140W Peak (70W RMS) 5-1/4" 35W Terminator Series Component Speakers


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NVX 25 ft. of True Spec 16 Gauge Speaker Wire

100% OFC wire with a noise eliminating twisted-pair technology to provide crystal clear sound.


Car Stereo and Speaker Installation Tool Kit

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


NVX SDSK2 Speaker Kit

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



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Bundles with this Product

Get 25% off a Set of F.A.S.T. Rings with Purchase!

Reduce panel vibration, increase mid bass, reduce destructive waves, and get better sound! The F.A.S.T. Rings Kit help to focus all the sound into the cabin, bringing out the full potential of your speakers.







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Mobile Solutions F.A.S.T. Rings 5-1/4" Speaker Enhancer Kit (IA-FAST-5CA)


Special Price $14.99 ($19.99 if purchased separately)

Mobile Solutions F.A.S.T. Rings 5-1/4" Speaker Enhancer Kit (IA-FAST-5CA)

• F.A.S.T. ring kit for 5.25" speakers
• Includes 3 piece foam speaker rings
• Acoustically seals speakers for better sound performance
• Absorbs rear wave, prevents front and rear wave cancellation and reduces panels vibrations

Add a Sound Deadening Speaker Kit and get 10% Off!

For a limited time, save 10% on an NVX Sound Deadening Speaker Kit by clicking "Add both to cart" button on select speakers! This offer cannot be combined with any other coupons or offers.







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Special Price $13.49 ($14.99 if purchased separately)


• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL
• Reduces Heat
• Simple To Install
• Peel and Stick Installation
• Two 10" x 10" Pieces

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MTX Audio Store
MTX Audio Terminator Speakers

MTX TERMINATOR52 Terminator Series Speakers

The MTX Audio Terminator Series Speakers will improve any stock stereo. These speakers are designed to play lower notes than other competitive models which means you'll have great bass reproduction even without a subwoofer. These speakers are a perfect option if you are replacing blown stock speakers or upgrading your system because they will sound great even with just the source-unit amplification. 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!

Durable Build

The Terminator series speakers are made of durable polypropylene cones and Mylar tweeters that are built to last. The lightweight polypropylene cone provides excellent sound reproduction and retains its stiffness over time. The Mylar dome tweeters reproduce clear high frequency sound with a solid build. With the included grille, you can rest assured the speakers will be protected.

Shallow Mounting Depth

These speakers are great for replacing stock stereo speakers for many reasons than just sounding great. The shallow mounting depth means you will have no trouble installing them in almost any vehicle.

General Features:

  • 5.25" 35W Terminator Series Component Speakers
  • Power Handling:
    • Peak: 140 watts per pair / 70 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Recommended power range: 5 - 35 watts RMS per channel
  • For OEM replacement or Aftermarket upgrade
  • Polypropylene woofer cone
  • Butyl rubber surround
  • Includes grilles
  • Separate 1" semi-dome Mylar tweeter
  • 4 ohms impedance
  • Frequency Response: 58-20,000 Hz
  • Top-mount Depth: 2-1/8"
  • Sensitivity: 88dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Product History:

MTX TERMINATOR52 thumbnail
(newest, current model)
MTX TNS52 thumbnail
(previous model, replaced by MTX Audio TERMINATOR52)

Speaker Specifications

This is the manufacturer product line of speakers.
Terminator (MTX)
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.
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.
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.
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.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
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.

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.
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.
Butyl Rubber
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.
70 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.
35 watts
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".
88 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).
58 - 20000 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.
4 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.

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.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
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.

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Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 16 Gauge Speaker Wire

100% OFC wire with a noise eliminating twisted-pair technology to provide crystal clear sound.

Your Price $15.99

Streetwires 50 ft. of True Spec 16 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $29.99

Belva 23 ft. of True Spec 16 Gauge Speaker Wire

100% Copper Clad Aluminum, PVC blended jacket for easy installation and high strand count for maximum audio quality

Your Price $12.99

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

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $8.99

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 $14.99

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


Creates a tight seal around the speaker for enhanced audio quality and imaging.

Your Price $19.99

Speaker Baffles for your Speakers

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

Your Price $9.99

5" to 5-1/4" Round Foam Speaker Baffles

Creates a tight, acoustic seal behind the speaker to enhance the sound quality.

Your Price $5.97

16-14 AWG Butt Connectors

These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!

Your Price $4.49

16-14 AWG Blue T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $2.58

16-14 AWG Quick Disconnect Connectors

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

Your Price $13.26

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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 TERMINATOR52