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MTX Audio Terminator Dual Subwoofer Package + Amplifier

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Order within 34 hrs 43 mins to ship 1/23

Arrives by Friday, Jan. 27 to zip 94107

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TNP212D2 Dual Loaded Subwoofer Enclosure Features:

  • 2 12" Terminator Series Subwoofers Included
  • Power Handling:
    • RMS: 400 watts
  • Recommended power range: 200 - 400 watts RMS
  • 2" Aluminum voice coil
  • Rubber Surround
  • Polypropylene Cone
  • MTX Audio Logo on Dustcap
  • 48oz. Magnet
  • Frequency response: 37-150 Hz
  • 1-year Manufacturer's warranty (on subwoofers only)

Enclosure Features:

  • Dual 12" Sealed Sub Enclosure
  • Internally wired to a 2ohm final load
  • 5/8" MDF Solid Contruction
  • Durable Black Carpeting
  • Terminator Logo Embroidered into Carpet Front
  • Dimensions: 14"H x 29-1/2"W x 13-1/2"D1 x 11"D2

TNA251 Monoblock Amplifier Features:

  • Terminator Series Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 150 watts x 1 chan.
    • 2 ohms: 250 watts x 1 chan.
  • Max power output: 600 watts x 1 chan.
  • LED power and protection indicators
  • Mono gain control
  • CEA-2006 compliant amplifier
  • Speaker-level (high-level) inputs
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink for extreme heat dissipation
  • Variable high-pass filter: 40 - 400Hz, 12 dB/octave
  • Variable low-pass filter: 40- 400Hz, 12dB/octave
  • Variable Bass Boost: 0 to +12 dB bass boost at 50 Hz
  • Fuse Rating: 30A x 2
  • Dimensions: 12-1/4"L x 7-1/8"W x 2-1/4"H
  • 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • 1-year Manufacturer's warranty (on amplifier)

Read more about the MTX TNP212D2 in our blog!


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

Browse 11 questions and 50 answers
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Why did you choose this?
Sonic Electronix Store
I like it
Maggie T on Dec 4, 2016
I have owned several MTX Subs/Amps and have always been a good product.
Roy F on Nov 19, 2016
I wanted something cheap ish and good quality
Francesco y on Nov 26, 2016
because everyone who commented recommended this product.
Kirk S on Jun 21, 2016
Is it prewire sub?
A shopper on Jan 29, 2015
Best Answer: Everything is already wired when it comes to the sub box enclosure and the subs itself! The only ting you have to do is just wire the amp to the sub and to the power source and then connect to the head unit. I bought this item last year, it's amazing. Like words can't describe how cheap and easy the setup is. The quality is good to.
Reply · Report · Austin J on Jan 29, 2015
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Fit mi 2014 silverado ?
A shopper on Aug 4, 2014
Best Answer: Hello,

It is unlikely it will fit in the matter that you wish it does. Especially considering manufactures like Ground Shaker have vehicle specific enclosures for a 'proper' fit.
Reply · Report · Customer SStaff on Aug 12, 2014
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will this fit in the trunk of an 04 ford mustang?
Shelly D on Nov 21, 2014
Best Answer: Hello,

Like most things Car Audio, you will need to measure out the available space yourself. Unfortunately, there isn't a database for vehicle specific Trunks and their available space. MTX conveniently gives you the dimensions of their product, so use this to address your inquiry.

Dimensions: 12-1/4"L x 7-1/8"W x 2-1/4"H
Reply · Report · Customer SStaff on Nov 22, 2014
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Would you be able to attach the amp and sub to a previous amplifier and sub wires so you wouldn't have to rewire all the new stuff?
Ethan on May 1, 2015
Best Answer: Hey you will be able to attach to previous wires but if you want my advice... I wouldn't. New wires are always a good idea for premium quality. I loved these subs btw
Reply · Report · Austin J on May 1, 2015
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Is it a prewired subs?
Rory B on Jan 29, 2015
Best Answer: I believe so. I took it strait up to best buy to get it hooked up & every thing was still in the box. I've taken the subs out of the trunk a couple of times & I just disconnected the 2 wires in the back like u wound any other so to make a long answer short yes . . Good bang for ur buck but I would recommend getting a bigger amp for the summer time. Mine cuts off when it gets to hot ..FYI.
Reply · Report · Jason L on Jan 29, 2015
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Will this fit in a 1996 ford ranger xlt extra cab pick up?
Matt M on Dec 20, 2016
Best Answer: yes ,but it take up the whole back area. If I had a that size truck I would buy a pancake sub with the truck form box. They come in single or dual form loaded box. MTX and stealth make great ABS sub boxs. You can call SONIC and they can help get a better forming box for you needs.
Reply · Report · michael m on Dec 21, 2016
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What kind of wires do i need for this?
Isaac L on Jun 26, 2015
Best Answer: 8Gage wire kit
Reply · Report · terrell p on Jun 26, 2015
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Hello i live in France but i can't order, but i want absolutely this pack what to do to get it ?
damien14000 on Feb 10, 2015
Best Answer: Hello,

The best way to access a quote yourself, is by adding each item to your shopping cart. From there, if you enter your zip code and/or country of destination within the page that information will also be communicated to you.

We invite you to visit your shopping cart through the link below:

Please let us know if you have any further questions. We look forward to your upcoming purchase!
Reply · Report · Customer SStaff on Feb 10, 2015
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would this fit a 2005 ford mustang?
A shopper on Feb 9, 2015
Best Answer: Hello,

Unfortunately, there isn't a fit guide that lists the dimensions of a vehicle's available space. Please use the dimensions of the enclosure that we have provided in the description (also below) , and compare it to the area that you wish to use by measuring it out.

Dimensions: 14"H x 29-1/2"W x 13-1/2"D1 x 11"D2
Reply · Report · Customer SStaff on Feb 10, 2015
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Would this system fit in a 2008 Toyota Tacoma Extended Cab truck?
Jennifer on Dec 12, 2014
Best Answer: Hello Jennifer,

Unfortunately, we do not have a fit guides that tells us the available space in a given vehicle. However, we do provide the dimensions of the enclosure - Dimensions: 14"H x 29-1/2"W x 13-1/2"D1 x 11"D2 - to compare it to the available space.
Reply · Report · Sonic Electronix SStaff on Dec 14, 2014
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Product Summary


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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 Terminator Dual Subwoofer Package + Amplifier