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MTX Audio T8512-44

12" Dual 4 ohm Thunder8500 Superwoofer (Thunder 8500 T8500 Subwoofer)

Discontinued
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MTX Audio T812-44

OUR PRICE: $149.99

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MTX Audio T8512-44

12" Dual 4 ohm Thunder8500 Superwoofer (Thunder 8500 T8500 Subwoofer)

$579.95

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25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

$37.85

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40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

$97.99

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2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

$7.99

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High Output Subwoofer

Known for high impact thunderous bass, the Thunder 8500 sits proudly in the lineup of Thunder series subwoofers from MTX Audio. The Thunder 8500 isn't your average 500 watt subwoofer. A 160oz. magnet is on this subwoofer with a Xmax rating of 22mm.

Since a subwoofer is made to be driven, MTX Audio designed a Spider Plateau Venting cooling system which cools the voice coil and maximizes power handling. The sitched surround helps ensure a long life-span even under extreme circumstances. Handle power like you never thought before with the MTX Audio Thunder 8500!

Authorized MTX Dealer
  • 12" Dual 4 Ohm Thunder8500 Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 500 watts
  • Impedance: Dual 4 Ohm
  • Injection molded, carbon filled, polypropylene with aluminum deposition cone woofer
  • High roll NBR Surround to maximize excursion
  • Asymmetrical Linear Drive System (ALDS) with flat progressive spider
  • Stitched cone for added durability
  • Spider plateau venting cooling system
  • 3" Voice coil
  • 160oz. Magnet structure
  • Sensitivity: 92 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Product History:

MTX 7512-44 thumbnail
(newest, current model)
MTX T812-44 thumbnail
(previous model, replaced by MTX Audio SuperWoofer 75 Series 7512-44)
MTX T8512-44 thumbnail
(previous model, replaced by MTX Audio T812-44)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
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.
1000 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.
500 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Dual
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
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
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).
39 - 150 Hz
Sensitivity
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".
92 dB
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Silver
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.
Injection Molded Carbon Filled Polypropylene w/ Aluminum Deposition
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.
Nitrile Butadiene Rubber (NBR)
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.0 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.0 cubic feet
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.
7-3/4"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
11"
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.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 – 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
71%
4 Star
14%
3 Star
14%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
4.0
Features
4.6
Design
4.6
Usability
5.0
Lisa

Hickory, NC

Overall
Durability
Value
Features
Design
Usability
MTX compared to ALPINE

June 8, 2006

well.. the other guy that said that these subs are just ok is either crazy or just dumb.. These MTX 8500's are so freaking loud.. I've heard these before in a Civic and these things were making the trunk, roof, back window flex 2-3 inches every single hit of the sub.. Anyone even thinking about comparing these to the Alpine Type R's is crazy! I'm not dissing the Alpine's, but they just cannot compare to the SPL these things push.. they are insane... I have 2 MTX 5500's and they beat the Type R's hands down.. The 8500's absolutely murder the Type R.. probably at least 5 dB difference.. its not even close.. these things are quite a bit pricy.. $450 msrp.. but they are definitely worth it.. Don't let this guy kid you.. if you put 1 of these things against 2 alpine's you will be louder.. pair these with a MTX 7801 and you will be louder than anyone in your town...

9 of 10 found this helpful

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Paul

Rockton, IL

Overall
Durability
Value
Features
Design
Usability
great sound quality

August 12, 2008

I highly recommend this sub. After my friend got rid of his mtx x thunders, he bought one of these, and i would say its much louder than both of the x thunders. the 500 watt rms rating is WAY underrated. I have seen this sub pushed by a 1000 watt rms mtx amp in a retail store and it showed no signs of distortion or ware and tear. With enough power, this sub can actually make your ears uncomfortable. The sound quality is fantastic. I would say its the best sub i have heard as far as sound quality goes. A+ for this one.

6 of 7 found this helpful

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Jonathon

Crystal Lake, IL

Overall
Durability
Value
Features
Design
Usability
A good choice (MTX8500 DVC)

April 25, 2008

I have 1 Thunder8500 in a sealed box with a 500w RMS amp, and it is quite a nice setup. Currently, the sub is underpowered, but this sub will thump hard with no distortion, and at times, I have used it for 5-6 hours straight and it showed no signs of distortion, or wear. The MTX 8500 DVC is so good, I am going to be purchasing a second sub, and individually amping them. 2 words of caution to potential purchasers. First, you will need Dynamat or some type of sound deadening because it will rattle a trunk car quite a bit, and second, I recommend at least 600w RMS amplification to really allow this sub to perform to its potential.

5 of 6 found this helpful

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Steve

Canton, MI

Overall
Durability
Value
Features
Design
Usability
Amazing!!

June 12, 2009

I have a pair of these in my 350Z, with a custom enclosure, and a JL Audio 1000/V2 powering them. It will make your teeth shake when the bass pounds. These are amazing speakers and nice and shallow to fit in my car. Don't let the shallow depth foul you though, they hit so hard they make my radar detector bounce up and down on the windshield with the pressure wave.

Keep plenty of Tylenol around, the booming bass from these will blow your head and your mind. Expensive, but the sound is totally worth it!!

5 of 7 found this helpful

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Arnulfo

Beloit, WI

Overall
Durability
Value
Features
Design
Usability
Banger!

January 24, 2008

I Have 2 of these in my Lincoln with an MTX TA7801 and they hit hard. They are pretty expensive but if you can afford it and you love bass, then this is the sub for you.

5 of 7 found this helpful

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David

Lexington, NC

Overall
Durability
Value
Features
Design
Usability
High performance!

October 12, 2007

I have 2 of these in my hatch with a 1400 watt amp. I had to blast foam everywhere cause these speakers hit so hard you have to wear ear plugs or you will bleed. I am a big fan of these speakers. You can hear my bass approximately 3/4 mile away. This is very durable and of the highest quality. BUT they are expensive. They will make your hood rattle, so be ready for competition!

5 of 7 found this helpful

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matt

Black Creek, WI

Overall
Durability
Value
Features
Design
Usability
Not a bad sub.

February 1, 2006

These subs are loud and sound vary clear. But if you are looking for some bass that hurts when you turn it up these are not the right sub for you! The Alpine R’s are a way better sub and cost a lot less. If you must have MTX subs then get one 9500, or two if you can afford the price.

4 of 6 found this helpful

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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $37.85

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $97.99

Stinger Sound Dampening Bulk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

Your Price $94.97

Dynamat Sound Dampening Bulk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $159.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $74.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $7.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $8.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

Universal 12" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $19.95

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 MTX Audio T8512-44 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 MTX Audio T8512-44 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 MTX Audio T8512-44 Subwoofers

Mono Amp

4 Channel Amp

4 MTX Audio T8512-44 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

T8512-44

UPC

715442351275

Weight

40.00lbs

Internal SKU

t851244

Internal Product ID

2600

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 T8512-44