MTX RTU8P picture


20cm 8" underseat flat sealed aluminum powered enclosure, 150W RMS Class-AB amplifier with active x-over and EBC remote control


The MTX RTU8P active subwoofer (20cm 150W RMS 600W Peak) has no equal when it comes to improving an installation. It is ultra compact, extra thin (less than 8cm thick), super easy to fit (under a seat for example ...) and very easy to install. It is a small marvel of sound quality capable of reproducing a level of bass more than enough to listen to music with infinite pleasure. We've taken the time to make an amazing product with a fine balance between bass quality, power, price and design.

It is constructed from thick aluminum. It's ultra rigid, it doesn't vibrate and it's very resistant. It is not afraid of kicks when installed under a seat.
The 20cm subwoofer is a dedicated thin version. It was designed to do the maximum bass in this small cabinet of only 6 liters.
The amplifier develops the tidy power of 150W RMS. It uses a class-AB topology to ensure perfect radio reception when installed in the passenger compartment, near the car radio. We did it very powerful compared to the competition because we want our customers to have a good time with MTX, and of course, because we coined the word "BASS". To do serious you need power ...
The control panel is very complete with high-level inputs (automatic ignition, no "remete" cable needed), RCA inputs (Low level), gain control (0.1V to 4V), bass equalizer (0 to + 12dB), the active 18db / Oct low-pass filter variable from 50Hz to 150Hz, the phase switch (0 ° or 180 °) and the EBC remote control port. Nothing is missing, you can adjust the bass as you want and when you want ...

But as usual, the most important thing is the result: the sound quality. When you turn on the RTU8P, the first thing you say will be "waooow ... so much bass in such a small cabinet?!?". And you will still increase the volume ... :)


• The simplest and most efficient solution to add bass to an installation
• Reduced size and thickness for easy installation under a seat
• Powerful Class-AB amplifier for realistic bass rendering
• Invisible mounting possible
• Remote EBC remote control at the front
• Low and high level inputs
• Automatic remote on high level inputs
• Phase adjustment 0 or 180 °
• Works perfectly with an original car stereo, or more ...


• Underseat flat sealed aluminum enclosure
• Subwoofer: 20cm 8"
• Class-AB mono block amplifier
• Peak power: 600W
• RMS power: 150W
• Active x-over: variable from 50Hz to 150Hz
• EBC control included
• High and low level inputs
• Auto switch on with high level inputs
• Sensitivity: 0.1V~4V
• Adjustable phase: 0° or 180°
• Bass Boost: @45Hz variable from 0 to +12dB
• Dimensions: 345x242x78mm
• Weight: 5.5Kg

Recommended efficient associations

The RTU8P powered enclosure is the perfect bass complement in an original installation with 4 speakers connected to the head-unit.
Same story if you replace the original speakers with better quality ones like MTX TX2, TX4, TX6. The RTU8P will give a new dimension to your sound system, and add what any speaker is not able to provide: deep and loud bass…


MTX wants you to enjoy your hearing for a long time. Excessive exposure to loud volumes can damage your hearing. The United States Department of Labor recommends not exceeding the following recommendations:
90db : maximum 8 hours / day
92dB : maximum 6 hours / day
95db : maximum 4 hours / day
97db : maximum 3 hours / day
100db : maximum 2 hours / day
102db : maximum 90 minutes / day
105db : maximum 60 minutes / day
110db : maximum 30 minutes / day
115db : maximum less than 15 minutes / day
120db : immediate danger, 0 minutes / day



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Complementary products

Power Packs MTX ZNX6K, ZNX8K, ZNX10K


On the Press side...

Car&Hifi (D)

"Quality / price ratio: EXCEPTIONAL"

"The RTU8P makes a good impression in the listening test"
"The amplifier is of a mono analog design, with good components and a lot of power"
"It produces a lot of pressure and it sounds pretty tight"
"The woofer offers more than a good bass"
"The MTX RTU8P is a solidly built powered subwoofer enclosure that is not too expensive compared to the competition."