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MTX 5512-22 Open Box Complete

800W Peak (400W RMS) 12" 55 Series Dual 2 Ohm Subwoofer

MTX
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• Open Box Complete
• 800W Peak
• 400W RMS
• Polypropylene Cone
• Rubber Surround
• Spider Plateau Venting Mechanically Cools the Voice Coil
• Radial Ribbed T-Yoke Dissipates Heat and Decreases Distortion

Learn more about the ls-mtx-551222-obc6

We apologize

This item has been discontinued

Description


MTX brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

MTX Audio 55 Series Subwoofer

MTX 5512-22 55 Series Subwoofer

The MTX Audio 55 Series subwoofers are the perfect solution for improving your car sound quality while taking up little space. Their low profile means they do not need a large enclosure and will still deliver powerful bass. 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. With over 40 years of audio experience, MTX Audio makes sure and knows how to create quality audio with their products, and the 55 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.



Radial Ribbed T-Yoke

MTX Audio Series Subwoofer

Two features really make sure the MTX subwoofers stay cool: the Spider Plateau Venting and the Radial Ribbed T-Yoke. The Spider Plateau Venting is a mechanical cooling process that targets cool air at the voice coil. This means the subwoofer cools itself as it is playing. The Radial Ribbed T-Yoke acts as a heat sink that dissipates heat and decreases distortion.


  • A part that is fully functional but shows no sign of use outside of installation.

General Features:

  • 12" 55 Series Subwoofer
  • Power Handling:
    • Peak: 800 watts
    • RMS: 400 watts
  • Recommended power range: 200 - 400 watts RMS
  • Impedance: Dual 2 ohm
  • Polypropylene cone
  • Rubber surround
  • Spider plateau venting which mechanically cools the voice coil
  • Radial ribbed t-yoke dissipates heat and decreases distortion
  • Expanded surface area allows for increased volume displacement and SPL
  • Progressive suspension controls excursion at high power reducing distortion
  • Inverted Apex surround with symmetrical geometry controls cone movement
  • 2.0" High temperature voice coil
  • Frequency response: 25-130 Hz
  • Resonance Frequency (Fs): 35 Hz
  • Top-mount depth: 6-3/16"
  • Sensitivity: 85.1 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Wiring Guide


Wiring Guide to Wire 1 MTX 5512-22 Open Box Complete Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 MTX 5512-22 Open Box Complete Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 MTX 5512-22 Open Box Complete Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 MTX 5512-22 Open Box Complete Subwoofers

2 Channel Amp

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
55 Series
Subwoofer Size
12"
Peak Power Handling
800 watts
RMS Power Handling
400 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Voice Coil Diameter
2"
Frequency Response
25 - 130 Hz
Sensitivity
85.1 dB
Xmax (millimeters)
15.24 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Optimum Sealed Box Volume
1 cubic feet
Optimum Ported Box Volume
2.32 cubic feet
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
34 Hz
Equivalent Compliance (Vas)
44.4 liters
Total Speaker Q Value (Qts)
0.69
Electrical Q Value (Qes)
0.863
Electrical Resistance of Voice Coil (Re)
0.85 ohm
Mechanical Q Value (Qms)
3.4
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

5512-22 Open Box Complete-3

Weight:

15.00lbs

Internal SKU:

ls-mtx-551222-obc6

Internal Product ID:

131025

Customer Ratings & Reviews


MTX 5512-22 Open Box Complete thumbnail image

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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.