MTX Audio T9512-44 Subwoofers + FREE RE Audio XTX-5000.1 Amplifier

Pair of MTX Audio 12" Thunder9500 Series Subwoofers + <strong>FREE</strong> RE Audio XTX Class D Mono Amplifier

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Pair of 12" Dual 4 Ohm Thunder9500 Subwoofers • 4000W MAX • 2000W RMS • XTX Series Monoblock Full Range Digital Car Amplifier; MOSFET Power Supply • Wired Remote Included

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Product Highlights

Pair of 12" Dual 4 Ohm Thunder9500 Subwoofers • 4000W MAX • 2000W RMS • XTX Series Monoblock Full Range Digital Car Amplifier; MOSFET Power Supply • Wired Remote Included


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Buy Two MTX Audio T9512-44 Subwoofers, get the RE Audio XTX5000.1 FREE!

The best things in life are free, and that is exactly what you will be receiving with this bass bundle. By purchasing two MTX Audio T9512-44 12" subwoofers, Sonic Electronix will include a free RE Audio XTX5000.1 monoblock amplifier. If you are planning on purchasing two subwoofers and a compatible amplifier, why not get the amplifier for free? This Sonic exclusive bundle is the perfect way to get that quality MTX Audio sound without breaking the bank.

MTX Audio and RE Audio Bass Bundle

This Sonic Electronix Exclusive Bass Bundle showcases a RE Audio XTX5000.1 amplifier along with a pair of 12" Thunder9500 Series, MTX Audio subwoofers. This excellent bass package pushes 2000 watts of clean, continuous RMS power. The MTX Audio Subwoofers each have Dual 4 Ohm Voice Coils; meant to be wired in parallel/parallel, to a final impedance of 1 Ohm. For more information regarding subwoofer wiring, please check out our Subwoofer Wiring Diagram.

These MTX Audio T9512-44 12" Thunder9500 series subwoofers require 2000 watts of RMS power. The included RE Audio XTX5000.1 amplifier will compliment this required power by supplying a perfect match-up of certified RMS continuous power. This bass bundle is a perfect solution for anyone looking to take their bass up a notch and with a free amplifier it would make no sense to pass up.


MTX Audio T9512-44

12" Dual 4 ohm Thunder9500 Superwoofer
Quantity: 2

  • Pair of 12" Dual 4 Ohm Thunder9500 Subwoofers
  • Power Handling:
    • Peak: 4000 watts total / 2000 watts each
    • RMS: 2000 watts total / 1000 watts each
  • 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
  • 4" Voice coil
  • 260oz. Magnet structure
  • Sensitivity: 88 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

RE Audio XTX5000.1

XTX Series Monoblock Full Digital Class D Car Amplifier
Quantity: 1

  • XTX Series Monoblock Full Digital Car Amplifier
  • RMS Power Rating (14.4V):
    • 4 ohms: 1000 watts x 1 chan.
    • 2 ohms: 1700 watts x 1 chan.
    • 1 ohm: 2500 watts x 1 chan.
  • Dynamic power output: 5000 watts
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Wired remote included
  • Selectable bass boost with frequency control (0-12 dB at 30-80 Hz)
  • Single channel operation
  • 2-Way System Protection circuitry (thermal and short circuit)
  • Heavy duty brushed aluminum alloy convection cooled heatsink for efficient heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated 8-18AWG screw terminals
  • Input sensitivity:
    • Low level: 100mV-6V
  • Variable low-pass filter (40-180 Hz, 24 dB/octave, Butterworth)
  • Subsonic filter (17-50 Hz, 24 dB/octave)
  • Signal to noise ration: 90dB
  • Phase Shift Control: 0 - 180°
  • Frequency response: 17-180 Hz
  • Dimensions: 9-1/4"L x 20-9/16"W x 1-15/16"H
  • 1/0-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Specifications & Details

Amplifier Power Specifications
RMS Power @ 4 ohms
1000 watts x 1 channel
RMS Power @ 2 ohms
1700 watts x 1 channel
RMS Power @ 1 ohm
2500 watts x 1 channel
Peak Power Output
5000 watts x 1 channel
Amplifier Specifications
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
5000 watts
Total RMS Power Output
2500 watts
Maximum Input Gauge Size
1/0 AWG
Minimum Impedance Unbridged
1 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
30 - 250 Hz
Subsonic Filter
17 - 50 Hz
Signal-to-Noise Ratio
90 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Fan Cooled
CEA-2031 Compliant
Subwoofer Specifications
Number of Subwoofers
Subwoofer Size
Voice Coil(s)
Impedance (Per Voice Coil)
4 ohms
RMS Power Handling
1000 watts
Total RMS Power Handling
2000 watts
Peak Power Handling
2000 watts
Total Peak Power Handling
4000 watts
Woofer Surround
Nitrile Butadiene Rubber NBR
Woofer Composition
Injection Molded Carbon Filled Polypropylene w/ Aluminum Deposition
Minimum Sealed Box Volume
1.0 cubic feet
Maximum Sealed Box Volume
1.5 cubic feet
Minimum Ported Box Volume
1.75 cubic feet
Maximum Ported Box Volume
1.75 cubic feet
88 dB
Frequency Response
31 - 150 Hz
Xmax (millimeters)
25.4 mm
Top-Mount Depth (Mounting Depth)
Cutout Diameter
Recommended Enclosure Type
Ported / Vented
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



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Product and How-to Videos

  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews

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Customer Reviews

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The following review is for T9512-44, which is a part of the bundle you are viewing.

For the price of this single subwoofer, you can get two of the orion HCCA subs, which have a higher rms, more excursion and an overall louder sound.

By Denzel on October 10, 2011


found this helpful.


The following review is for XTX-5000.1, which is a part of the bundle you are viewing.

I have this beast wired down to one ohm on two 15" dual 4 re audio sxx subs in a custom box built to match the specs in a 2004 grand marquis i drove 2&1/2 hours to cedar point banging the whole way & checked my amp once i arrived & it wasnt even warm to the touch i luv the durability of this amp would recommend this amp to anyone who doesnt wanna pull next to my car with his system playin & get embarrassed.

By tone on September 21, 2011


found this helpful.

Very nice, clean amp

The following review is for XTX-5000.1, which is a part of the bundle you are viewing.

I love this amp. It's so clean and handles the low notes like a champ. I have personally never heard my Solo x 18 or anyone else's Solo x sound so good. The response is tight and right on. There's no delay. On my other amp, there was no chance of playing techno music. The sub was just way too delayed and off-beat. I recommend this amp 10x over. Super low price and sounds great!

PS: Is this amp CEA-2006 compliant? It does not say it is on here! :O

By Alex on May 24, 2011


found this helpful.


The following review is for XTX-5000.1, which is a part of the bundle you are viewing.

It works nice! Definitely does more that 2500 RMS. Clamped it out on 14.4 did a 2630.

By Jake on December 27, 2012


found this helpful.

not bad

The following review is for XTX-5000.1, which is a part of the bundle you are viewing.

For about 500 bucks find a better amp, it only pushes about 1500-1750 rms. I will say it sounds pretty nice though, plays lows well, sq is good on it, 5k?? Heeeeeelll no you could buy a soundstream rubicon 2500d wich put out cleaner and a little more power than this for 250 bucks. But its still a good amp. It's big though so people will think it's a beast.

By john on March 9, 2012


found this helpful.

Mtx 9512

The following review is for T9512-44, which is a part of the bundle you are viewing.

Man I bought this Years ago and its still hitting hard lol. Just wanted to share! =) It hits deep with a stong amp.

By Andrew on September 9, 2011


found this helpful.

Mind over Matter

The following review is for T9512-44, which is a part of the bundle you are viewing.

I have one of these subs along with a te1501d and in a sealed enclosure. This sub is well capable of doing some good handling, and if in a sealed rather than vented enclosure will hit the notes most claim they can't. If your looking for a sub that strokes at subsonic then this isn't for you, resonance hits at 31hz, and also is changed by the enclosure that restricts certain frequency along with the shape of the car that also eliminates certain resonances. Basically when it comes to math, the JL w7 is a louder sub by 1 dB which = 1/3 more power as 3 dB = 3* more power. Most will say "but mtx has a higher power handling rms" that doesn't really matter when it comes to dB sensitivity which in the end JL takes the cake..Im a hard earned mtx fan but I do my homework, JL is the better sub if all elements are properly setup, to the naive stereo installer a walmart bought pioneer installed by a pro is potential to out due a competition subwoofer installed by an amature.

By Thomas on October 12, 2007


found this helpful.

JL Audio W7 vs. MTX 9500

The following review is for T9512-44, which is a part of the bundle you are viewing.

I know how everyone thinks that this efficiency thing really matters. But when you spend this much on a sub. Who cares about what it'll do on a little cheap amp. I have 2 of these MTX 12's and the "rated power of 1000 watts" is bull. I have 4 1000 watt MTX amps on each coil on each woofer and have had that for 6 months so why don't we try hooking up 1500 to the JL and see what it can do besides pop. This sub is way heavier than a JL for a certain reason. So if all of you JL fans think your sub can outperform this sub power for power step up to the plate. The JL costs more maybe louder on a "little" amp but lets talk about real power and what the subs can really take. The XMAX's aren't even close. I've been up against the JL's in DB drag race and the guy had 1000 watts on each JL and there was a 3 db difference with the MTX's being louder. I'd compare the W7 more to the Rockford Fosgate T2.

By Jason on January 30, 2006


found this helpful.


The following review is for XTX-5000.1, which is a part of the bundle you are viewing.

Looking for extrem power? You found it I have one of the XTX-5000.1 on 4 RE XXX12" and I hit 152.1Db at the 2012 parts Express Audio show. I order 4 Lanzar OPTI7001d 5100 Watt @ 1ohm one on each XXX12" POWER.

By Impact on August 4, 2012


found this helpful.


The following review is for T9512-44, which is a part of the bundle you are viewing.

This sub exceeded expectations. I have one in a ported box with a kicker zx 1000 amp. Big 3 upgrade. Xs power battery and 0 guage everything. Sounds like 4 powerful 12's.

By Rog on June 23, 2013


found this helpful.


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