Behringer TRUTH 8S BT Studio Subwoofer

Studio Subwoofer With the Low End Your Mix Has Been Missing

The Behringer TRUTH 8S BT is a powered 8" studio subwoofer that gives small nearfield monitors the deep bass they cannot reproduce alone. With 4.5" or 5" mains, engineers routinely guess below 80 Hz — and that guessing is where mixes lose their punch. A long-throw, high-excursion 8" transducer with a 160-watt built-in amplifier turns kick weight and sub-bass lines into audible decisions rather than assumptions.

What Sets This Sub Apart

The high-density composite enclosure minimises diffraction and low-frequency distortion, keeping the cabinet itself out of the signal path. A variable low-pass filter, phase switch and 80 Hz high-pass on the mains output align the sub with any pair of stereo monitors, while Bluetooth 5.3 adds cable-free reference streaming into the same room.

Driver, Amplifier and Frequency Response

The 8" long-throw driver moves more air per cycle than a standard woofer, which is what allows this compact cabinet to reach down to 20 Hz without bottoming out.

• LF Driver: 8" long-throw, high-excursion transducer — moves more air per cycle for tight, accurate sub-bass
• Amplifier Power: 160 W — matched headroom for kick drums and sub-bass lines
• Frequency Range: 20 Hz – 150 Hz

Inputs, Outputs and Bluetooth 5.3

Dual stereo inputs on balanced 6.3 mm TRS and RCA plus direct link outputs build a clean 2.1 setup straight out of the box. Bluetooth 5.3 adds cable-free reference monitoring from a phone, tablet or laptop.

• Inputs: Balanced 6.3 mm TRS, RCA — works with any audio interface or monitor controller
• Wireless Streaming: Bluetooth 5.3
• Direct Link Outputs: Stereo pass-through to mains — clean 2.1 system building without rewiring

Crossover, Phase and Mains Integration

The variable low-pass filter sets the upper limit of the sub, while the phase switch aligns it with the mains. A high-pass filter on the mains output blocks lows below 80 Hz so the satellites run cleaner and louder.

• Low-Pass Filter: Variable — sets the crossover point to match any pair of stereo monitors
• Phase Switch: 0° / 180°
• High-Pass on Mains Output: 80 Hz — strips unwanted lows from the satellites so they play louder and cleaner