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MTX Audio DUAL Underseat Subwoofer

MTX Audio DUAL Underseat Subwoofer


What's better than 1 MTX Audio IB-800X Underseat subwoofer, delivering big-bass without sacrificing any cabin or storage space?  2 of them! Our system features one of the highest power outputs on the market with a huge 180 Watt RMS power rating PER WOOFER, 2 x 8" Active Subwoofer with four additional 8" 'ReflexThunder' Passive Subwoofers integrated into the cast-aluminium chassis for loud and deep bass reproduction. Included in the box is a Bass-Remote, 8 Gauge power kit and high-level input featuring Auto turn-on for convenient installation in the newest of vehicles.

Supplied with plug and play input interface where available (still requires high current direct battery connection).

For Toyota Hilux 2020/21 and Ford Falcon BA/BF/FG, you will need to make manual Connections outlined here

For other vehicles such as Holden Commodore Ute and Pre 2020 Hilux, Navara etc. select the plug and play interface pack for the easiest installation option.

  • Description

    • The best and most simple way to add great bass in your system
    • Reduced size and thickness for underseat installations
    • Powerful Class-D amplifier for a realistic bass reproduction
    • Features 2 x MTX Passive Subwoofers to increase low-end audio reproduction.
    • Works perfectly with all aftermarket head-units, processors and factory audio systems.
  • Specifications

    • MTX ReflexThunder Passive Subwoofer Technology
    • Subwoofers : 1 x 20cm (8“) + 2 x 20cm x 5cm (8") Passive Subwoofers 
    • Class-D Mono-block amplifier
    • RMS Power : 180W
    • Frequency response: 35 - 150 Hz
    • 8 Gauge Power-Wire and Fuse included
    • Active X-over : variable 50~150Hz
    • Bass remote included
    • High and Low-Level inputs
    • Auto switch on with high-level inputs
    • Input sensitivity : 0,1V~4V / 0.1V-9V High-Level
    • Phase switch : 0° or 180°
    • Bass boost : @45Hz variable 0 to +18dB
  • Find your local installation specialist

    If a DIY solution is not appealing we recommend using only a Car Audio Masters installation network partner to assist you with your installation. We have 3 key Audiocom CAM member locations in Western Australia and over 90 members are available Australia wide. To find your nearest CAM member to assist you with your installation, visit

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