MTX Audio SuperWoofer 7512-22 + Atrend Sealed Enclosure

1500W Peak (750W RMS) 12" Dual 2-Ohm Subwoofer + Sealed Enclosure

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• Peak Power: 1500W
• RMS Power: 750W
• Polypropylene Cone Woofer
• Compression Molded NBR Surround

Learn more about the mtx751222_mdfs12_bbsw127
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MTX Audio 7512-22

MTX Audio 75 Series Subwoofer

The MTX Audio 75 Series subwoofers are back and better than ever. The sound quality is incomparable and is only exceeded by the MTX 95 series subwoofers. How do they do this? With an improved surround compared to traditional Half-Roll surrounds, expanded surface area and reduced distortion due to progressive suspension controls, MTX Audio 75 Series subwoofer is a game-changer in the world of SPL. With over 40 years of audio experience, MTX Audio makes sure and knows how to create quality audio with their products, and the 75 Series is no exception!

MTX Inverted Apex Surround

MTX Inverted Apex Surround

The MTX Inverted Apex Surround increases the surface area of the sub to allow for more air movement, accurate bass reproduction and higher SPL. Traditional Half-Roll Surrounds have an inherent wrinkling when reproducing bass due to the physics of its motion, which causes distortion. The Inverted Apex Surround moves symmetrically through both positive and negative cycles which eliminates this type of distortion.

Progressive Suspension Control

MTX Audio Series Subwoofer

Progressive Suspension control the excursion of the subwoofer at high power levels which reduces distortion. Eliminating this 3rd order distortion means you can play your music loud and rely on your subwoofer to take of itself.

Spider Plateau Venting

Spider Pateau Venting creates an extremely efficient and effective self-cooling cycle that ensures the woofer can play longer and perform better than subwoofers employing traditional venting techniques

MTX Audio SuperWoofer 75 Series 7512-22

1500W Peak (750W RMS) 12" SuperWoofer 75 Series Dual 2-Ohm Competition Level Performance
Quantity: 1

Save on the Open Box Version:
Available Now - CLICK HERE

General Features:

  • 12" Dual 2 Ohm TR75 Series Subwoofer
  • Power Handling:
    • Peak: 1500 watts
    • RMS: 750 watts
  • Recommended power range: 400 - 750 watts RMS
  • Polypropylene cone woofer
  • Compression molded NBR surround
  • 2.5" high temperature dual 2 ohm voice coil
  • 8 gauge nickel compression terminals
  • Extended pole for smooth, linear, piston drive
  • Die cast aluminum basket
  • Black anodized aluminum dust cap
  • Top-mount depth: 7.437"
  • Frequency Response: 24 - 130Hz
  • Sensitivity: 85 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Atrend 12SQL

12" Single Medium Pro Series Sealed Subwoofer Enclosure
Quantity: 1


General Features:

  • 12" Single Medium Pro Series Sealed Subwoofer Enclosure
  • Made in the USA
  • Completely miter and dado end panels
  • Premium carpeted finish
  • Silver spring loaded terminal cups
  • 3/4" MDF construction
  • Glued and braced with fasteners
  • Total box volume: 1.00 cubic feet
  • Dimensions: 13-1/2D x 13-1/2"W x 13-1/2"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Belva BBSW127

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)
Quantity: 1

General Features:

  • 12 Gauge Speaker Wire
  • High strand count for maximum flexibility
  • Ultra-flexible PVC blended jacket for easy installation
  • Packed in resealable bag
  • Length: 7m (23 Ft)
  • Also available in 16 Gauge
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty

Product history:

MTX 7512-22, MDFS12, BBSW127 thumbnail
(newest, current model)
MTX T812-22 thumbnail
(previous model, replaced by MTX Audio SuperWoofer 7512-22 + Atrend Sealed Enclosure)
MTX T8512-04 thumbnail
(previous model, replaced by MTX Audio T812-22)

Specifications & Details

Subwoofer Specifications
75 Series
Subwoofer Size
Voice Coil(s)
Impedance (Per Voice Coil)
2 ohms
Final Wired Impedance
RMS Power Handling
750 watts
Total RMS Power Handling
Peak Power Handling
1500 watts
Total Peak Power Handling
Woofer Composition
Woofer Surround
Butyl Rubber
85 dB
Frequency Response
24 - 130 Hz
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Number of Subs/Speakers
Box Style/Shape
Second Depth
Wood Thickness
Number of Terminals
Terminal Type
Box Exterior Color
Box Finish
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



Model Number:

7512-22, MDFS12, BBSW127



Internal SKU:


Internal Product ID:


Customer Ratings & Reviews

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4 star
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As expected

The following review is for BBSW127, which is a part of the bundle you are viewing.

Could have a better way to decide which wire to use as positive or negative. Only has spaced print on one wire.

By George on August 8, 2014


found this helpful.

beau produit

The following review is for BBSW127, which is a part of the bundle you are viewing.

Belva est une marque qui se rapproche de la marque stinger a premiere vue.bon produit.

By dimitry on December 1, 2013


found this helpful.

Great wire

The following review is for BBSW127, which is a part of the bundle you are viewing.

This is some great speaker wire looks good works good and you get so much for so cheap

By Shane on February 1, 2015


found this helpful.


The following review is for BBSW127, which is a part of the bundle you are viewing.

Great wire, for a great price! Love the color and looks very professional.

By Billy on March 31, 2015


found this helpful.

mtx 7512

The following review is for 7512-22, which is a part of the bundle you are viewing.

Sounds great handles the 1000 watt rms soundstream amp great and conitues to get louder and sound good all the way up. Looks aesthetically pleasing as well. Another great mtx super woofer and transaction with sonic was good as well

By boom on February 5, 2015


found this helpful.

Good value

The following review is for BBSW127, which is a part of the bundle you are viewing.

It’s listed as (cca) which is copper clad aluminum wire and is cheap and doesn’t hold up good to high wattage. Aluminum isn’t the best audio wire, but it is copper clad and electric signals travel on the outside of the wire and that’s where a multi strand wire would come in handy. I think it’s a judgment call, but I wouldn’t buy it.

By Anonymous on April 6, 2019


found this helpful.


The following review is for BBSW127, which is a part of the bundle you are viewing.


By Carlos on September 17, 2015


found this helpful.

Great value

The following review is for BBSW127, which is a part of the bundle you are viewing.

Definitely get your moneys worth! Would be even better to receive complimentary gifts.

By Cameron on August 2, 2020 checkmarkIcon Verified purchase


found this helpful.

Decent speaker wire.

The following review is for BBSW127, which is a part of the bundle you are viewing.

Speaker wire is good. It works as speaker wire should.
My only grief with the wire is the thickness of the insulation. It's really thick, and in my opinion, too thick.
I have a very high quality wire stripping tool, but the thickness of the insulation made it next to impossible to center the speaker wire and my stripping tool always cut a bunch of strands of the wire. Not a real big deal in the grand scheme of things, though.

By Anonymous on May 18, 2019 checkmarkIcon Verified purchase


found this helpful.

Great add-on!

The following review is for BBSW127, which is a part of the bundle you are viewing.

Always nice to get freebie with purchase. Belva is always making quality stuff!

By Anonymous on November 7, 2019 checkmarkIcon Verified purchase


found this helpful.


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20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)



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