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MTX THUNDER75.4

4-channel car amplifier — 75 watts RMS x 4

Item # 236THND754

You'll get some serious MTX musical mojo when you put the MTX THUNDER75.4 4-channel amp in your car.

You'll get some serious MTX musical mojo when you put the MTX THUNDER75.4 4-channel amp in your car.

Item # 236THND754

Ships from distributor

Out of stock

C$269.99 Sale: -C$30.00 off

C$239.99

About the MTX THUNDER75.4

Upgrade your power for better sound

You'll get some serious MTX musical mojo when you put the MTX THUNDER75.4 4-channel amp in your car. This compact amp will drive each of your front and rear speakers with 75 watts RMS of detail-enhancing musical power. Install a nice set of speakers, and you'll hear sounds you've never heard before, even in your favorite songs. And this little bruiser will truly fit in places where amps don't usually go

Upgrade your power for better sound

You'll get some serious MTX musical mojo when you put the MTX THUNDER75.4 4-channel amp in your car. This compact amp will drive each of your front and rear speakers with 75 watts RMS of detail-enhancing musical power. Install a nice set of speakers, and you'll hear sounds you've never heard before, even in your favorite songs. And this little bruiser will truly fit in places where amps don't usually go

Versatility

You can also put this amp into 2-channel mode to drive two subwoofers with 200 watts RMS per channel. In 3-channel mode, you can run some nice components up front with two channels while running a sub off the third channel.

Advanced tone control

The crossover filters on the front and rear channels allow you to adjust the sound to your setup. The front channels use a variable high-pass filter to keep the bass away from your full-range speakers, so they play cleanly. The variable rear crossover can be set to high- or low-pass depending on whether you're running a subwoofer or full-range speakers on the rear amp channels. It also features a very wide range of crossover points, that'll be useful for tuning midrange and midbass speakers.

MTX THUNDER75.4 control panel

MTX THUNDER75.4 control panel

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Product highlights:

  • 4-channel car amplifier
  • 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode)
  • frequency response: 15-25,000 Hz
  • Class AB amp technology
  • variable high-pass filter on front channels (10-200 Hz, 12 dB/octave)
  • variable high- and low-pass filters on rear channels (50-750 Hz, 12 dB/octave)
  • preamp inputs
  • 4-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
  • 12-5/8"W x 2-1/4"H x 6-5/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # THUNDER75.4

What's in the box:

  • 4-Channel amplifier
  • 4mm Allen wrench
  • 2mm Allen wrench
  • Four 1/2" Self-tapping screws
  • Owner's manual (English/ Spanish/ Portuguese/ French)

Customer reviews

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MTX THUNDER75.4 reviews

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39 reviews

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Product Research

Features
Connections

Features

Overview: The MTX Thunder75.4 is a full range 4-channel amplifier. It has aluminum heatsinks to dissipate heat generated by the amplifier. The amp produces 75 watts RMS x 4 at 4Ω, 100 watts RMS x 4 at 2Ω, and 200 watts RMS x 2 bridged at 4Ω.

Gain: The amp's front and rear channel rotary gain controls are independent and continuously variable from 200mV to 5V to match the output of the source unit.

Protection Circuits: The Thunder75.4 provides protection against overheating, under voltage, and electrical short circuits.

Crossovers: The front and rear channels have independent built-in crossovers:

  • Front: high-pass; continuously variable from 10 Hz (full range) to 200 Hz
  • Rear: switchable between low-pass, full range, and high-pass; the crossover point (high-pass or low-pass) is continuously variable from 50 Hz to 750 Hz

Connections

Power Terminals: The Thunder75.4 features set screw terminals for power, ground and remote turn-on. The power and ground terminals will accommodate up to 4 AWG wire, while the remote turn-on terminal will accept up to 10 AWG wire. The set screws are loosened/tightened with the supplied Allen wrenches. MTX recommends the use of 4 AWG power and ground wires.

Note: The Amplifier is not equipped with an internal fuse. An external 60-amp fuse (not included) must be installed on the power wire. If the system has only this amp and a wiring kit is used that includes a fuse with a value other than 60-amps, the original should be replaced with a 60-amp fuse.

Speaker Connections: The amplifier is equipped with four pair of set screw terminal speaker outputs. Each terminal will accommodate up to 10 AWG bare wire and is loosened/tightened with the supplied Allen wrench.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
had one previously and liked it, easy to replace as already wired for same unit [ NED R  May 13, 2018 ]
A
LOVE MTX products-has excellent reviews! [ aaron  Dec 15, 2017 ]
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My husband asked for it for Christmas. he is very picky about his sound system so it must be a pretty good item. [ M  Dec 02, 2017 ]
A
Good power for the money. [ Gerardo E. Jaim  Nov 28, 2017 ]
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Good value for quality [ Jeramie  Nov 25, 2017 ]
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Price [ Doesnt Matter  Jul 17, 2017 ]
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In my youth ran across a MTX 225ho, OMG...That amp was a beast. Been a fan ever since. [ Michael  Feb 24, 2017 ]
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Perfect for my Rockford Fosgate 6x8's [ Patrick  Dec 01, 2016 ]
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Upgrading from a 60Wx4. This is a perfect fit for new speakers in the front and the ones I currently have in the back. [ Daniel  Nov 29, 2016 ]
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Great rating. Seemed like a nice addition to my system. [ Paul  Nov 22, 2016 ]
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ziggy's recommendation [ Laurie  Oct 05, 2016 ]
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I need to power my 6x9s in the rear deck and the 4x6s in the door, this amp will supply enough RMS power and has a low THD%. [ Claude  Aug 29, 2016 ]
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SPACE CONCERNS [ JAMES  Jul 27, 2016 ]
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Highly rated, fits for my system. [ Joseph  May 20, 2016 ]
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Fits my speaker very well, and seems like a great quality. [ Kane  Feb 23, 2016 ]
SHOW MORESHOW LESS

4 questions already asked

Q
Will this amp with 4 in the front and 4 in the rear 6x9?
[ chuck  Aug 06, 2019 ]
2 answers
A
This is dependent on your RMS rating of your 6x9s assuming that they are 4 ohms as most 6x9s are. Without more information on your speakers make and model , it would be hard to determine if this amplifier is capable of driving you speakers. I would suggest taking the RMS of this amplifier as listed at 2ohms per channel, and match your speakers to the amplifier. I.E: 100 WATTS PER CHANNEL @2 OHM FROM THE AMPLIFIER TO 50 WATTS RMS PER SPEAKER.
[ Chris  Aug 19, 2019 ]
A
You would over load it with 8 speakers.
[ Robert  Aug 19, 2019 ]
Q
Is this amp strong enough for 2 mtx 7500 10" sub's ?
[ Gary  Nov 23, 2018 ]
1 answer
A
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
[ Krissy  Dec 03, 2018 ]  Staff
Q
Will this amp power two 10" subwoofers if you bridge this to two channels?
[ MARK  May 04, 2018 ]
2 answers
A
Technically yes but it would depend on the volumes you were expecting and the specifics of the sub's you are planning on using. Personally, I attempted to use it to power one RF 8" sub and two sets of Focal components in the front of the vehicle - i.e. 2 channels straight @ 75w and 2 channels bridged for the sub - and I was not happy with the performance. I ended up using this amp in a 2 channel bridged configuration to run my components and added a second amp for the sub. If I were you I would purchase a 500 watt or higher mono amp to run your subs. Subs only need 1 channel power. Hope this helps.
[ Nicholas  May 15, 2018 ]
A
No it is designed to run your higher frequencies, such as dash and door speakers. It performs very well for the price.
[ Stephen A.  May 14, 2018 ]
Q
How does the points system work? Do o get money off with the points?
[ Cliff  Nov 20, 2015 ]
1 answer
A
The Crutchfield Rewards program gives you 1 point for every dollar you spend + an additional 50 points just for creating a free Rewards account. Once you've earned 250 points or more, you can turn your points into a Rewards Gift Card that you can use toward future Crutchfield purchases. They're redeemable at a value of 2% cash back, so 250 points = $5 gift card, 500 = $10, 1,000 = $20 etc. etc. Here's a link to more info on our Rewards program: http://www.crutchfield.com/Support/rewards.aspx?
[ Larry  Nov 20, 2015 ]  Staff

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