MTX RTU8P Premium 8" Active Underseat Subwoofer

Upgrade your factory audio system with powerful, punchy bass without sacrificing valuable cabin or cargo space. The MTX RTU8P Premium Underseat Subwoofer is designed to deliver impressive low-frequency performance from an ultra-compact enclosure that fits neatly beneath most vehicle seats.

Featuring a high-output 8-inch subwoofer and a built-in 150W RMS Class AB amplifier, the RTU8P produces deep, controlled bass that transforms your listening experience while maintaining excellent musical accuracy. Whether you're listening to rock, pop, EDM, hip-hop or podcasts, the added low-frequency response brings your audio system to life.

Its slim cast-aluminium enclosure not only looks premium but also provides excellent heat dissipation and durability, making it ideal for daily-driven vehicles. The flexible installation options allow seamless integration with both factory and aftermarket audio systems using either RCA low-level or speaker-level inputs.

The included bass level remote puts control at your fingertips, allowing you to adjust subwoofer output from the driver's seat. Automatic turn-on functionality with high-level inputs makes installation simple in modern vehicles, including many EV platforms such as Tesla.

If you're looking for a clean, stealthy bass upgrade without filling your boot with a large enclosure, the MTX RTU8P is one of the most effective underseat solutions available.

Key Features

• Compact underseat design
• Powerful 8" active subwoofer system
• Built-in Class AB amplifier
• 150W RMS / 600W Peak Power
• Premium cast-aluminium enclosure
• High-level and low-level audio inputs
• Compatible with factory and aftermarket head units
• Automatic turn-on with speaker-level inputs
• Included wired bass level remote
• Variable low-pass crossover adjustment
• Adjustable bass boost control
• Selectable phase adjustment
• Suitable for traditional and EV vehicle installations

Specifications

• Subwoofer Size: 8" (20cm)
• Amplifier Type: Class AB Monoblock
• RMS Power Output: 150W
• Peak Power Output: 600W
• Frequency Response: 33Hz – 150Hz
• Active Low-Pass Filter: 50Hz – 150Hz
• Input Sensitivity:
  • RCA: 0.1V – 4V
  • High-Level: 0.1V – 9V
• Bass Boost: Variable 0 to +18dB @ 45Hz
• Phase Control: 0° / 180°
• Inputs: High-Level & Low-Level
• Power Cable Input: 8 Gauge
• Auto Turn-On: Yes (High-Level Inputs)
• Dimensions: 345mm x 242mm x 78mm
• Weight: 5.5kg

Perfect For

• Factory audio upgrades
• Vehicles with limited installation space
• Utes, SUVs and daily drivers
• Tesla and EV audio upgrades
• Customers wanting stronger bass without losing boot space
• Quick and discreet bass enhancement

What's Included

• MTX RTU8P Active Underseat Subwoofer
• Wired Bass Remote Control
• Installation Hardware
• User Manual