Surround sound subwoofers commonly connect to an AV receiver or amplifier through a subwoofer or low-frequency effects (LFE) output using an RCA cable, while passive outdoor subwoofers connect through speaker wiring to a compatible amplifier. Wireless models pair with supported sound bars or speakers over Wi-Fi, or use a dedicated wireless subwoofer transmitter, so confirm system compatibility and adjust crossover, phase, and volume settings during setup.

Front-firing surround sound subwoofers direct the driver toward the listening area, while down-firing models direct bass toward the floor. Burial subwoofers sit below ground with only the ported section exposed, and hardscape subwoofers mount above ground in outdoor spaces, often with a concealed driver and a permanent mounting option.

Choose an eight- or ten-inch subwoofer for smaller rooms or listening areas, while a twelve-inch or larger model may better suit larger spaces or outdoor areas that need more low-frequency coverage. Match the subwoofer’s power handling and connection type to the amplifier or AV receiver, and consider a burial or hardscape design for discreet outdoor installation.

Place a surround sound subwoofer near the front speakers or along a wall, while keeping it clear of obstructions and considering the room’s bass response. Set the low-pass crossover so the subwoofer handles only low frequencies, adjust phase and volume until bass blends smoothly with the main speakers, and use the receiver’s subwoofer or LFE output when available.