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800-Watt RMS 5-Channel Full Range Class D Amplifier

Extreme Power

Continuing the Legacy that MTX Audio started almost 20 years ago with the development of the Thunder amplifier series, we introduce the next generation – XTHUNDER. These amplifiers are designed to deliver extreme power to the most demanding speaker system designs and are capable of driving subwoofers and full range speakers alike

The XTHUNDER800.5 5-channel amplifier will power four speakers and a thundering subwoofer or two with power to spare while easily handling the abuse of long hours of extreme play.

Quick Glance Icons
  • 2-Ohm Stable
  • Bridgeable
  • Full Range Class D

    Built to Drive Four Speakers and a Sub

    Capable of delivering 400W RMS power into a 2Ω subwoofer load and 125W RMS power into each of the four full range channels at 2Ω, the XTHUNDER800.5 is ideally suited to power your entire MTX system. This is made possible by using high grade materials and a never wavering dedication to precision workmanship. This is what allows the XTHUNDER Series to deliver exceptional sound quality and performance.

    MTX XThunder800 Car Subwoofer Amplifier

    What’s Under the Hood?

    We start by using a highly efficient full-range class D amplifier topology to maximize electrical power efficiency while ensuring total thermal management, even under extreme use. This is all built on a dual sided circuit board with oversized copper traces that maximize electrical flow and minimize power loss before it gets to your speakers. Components are installed using surface mount technology making the circuit incredibly durable and vibration resistant allowing them to survive even when used in big bass systems.

    Additional heat management is handled by the top cover which functions as a large surface area heat sink. This effectively dissipates built-up heat so the amplifier runs cooler and can play louder, longer. The chassis also includes removable side covers that create a stealth look when installed, but also allow for easy access to connections and settings after mounting.

    Of course, the XTHUNDER800.5 isn’t all power and no finesse. It is loaded with features that enable full customization to ensure the best possible sound quality without distortion. Using the built-in high and low pass filters, subsonic filter, and bass boost you are able to get exactly the sound you want from your system every time.

    Don't Forget The Amp Kit

    Remember, you cannot install an amplifier without an amplifier kit. MTX recommends using a ZN5K-04 or ZN5K-08 to power the XTHUNDER800.5.

    How to Properly Set Your Amplifier's Gain

    • Full Range Class D Design - Offers Excellent Efficiency for Both Subwoofers and Full Range Speakers

    • Low Profile Design - Allows for Installation Anywhere

    • Variable Bass Boost - Allows you to boost your bass output by up to 18dB @45Hz

    • Cast Aluminum Top Cover - Efficiently Dissipates Heat

    • Variable Butterworth Crossover - a 12dB/Oct crossover that allows you to set the frequency your speakers will play down or up to

    • Triple Protection Circuitry - Thermal, DC Offset, and Short Circuit Protection circuitry ensures the amplifier will protect itself in the event of a problem

    4Ω RMS Power Output 75 x 4 (HF) + 300 x 1 (LF)
    Signal to Noise Ratio >70dB
    2Ω RMS Power Output 125 x 4 (HF) + 400 x 1 (LF)
    THD <0.2%
    Frequency Response 10Hz - 20kHz F/R + 10Hz - 250Hz Sub
    Maximum Input Signal 5V
    Max Sensitivity 100mV
    Low Pass Filter Variable, 40Hz - 250Hz, 12dB/Oct (Sub)
    High Pass Filter Variable, 40Hz - 250Hz, 12dB/Oct (F/R)
    Subsonic Filter Fixed, 27Hz, 12dB
    Bass Boost 18dB @ 45Hz
    Topology Full Range Class D
    Depth 8.9" (226.7mm)
    Length 14.2" (359.9mm)
    Height 2.03" (51.5mm)
    Warranty Period 24 months from date of purchase

    Test Tone 50Hzmp3 Download
    MTX004783 XTHUNDER Series Owner's Manual (32 pages) View | Download