A dual voice coil stereo subwoofer connects one voice coil to the left audio channel and the other voice coil to the right channel, allowing a single subwoofer to reproduce both channels. Follow the subwoofer’s wiring diagram, match the amplifier’s supported impedance, and maintain correct polarity for each connection.

Before installing stereo subwoofers, confirm the amplifier supports the subwoofer’s impedance and power requirements, and check whether the design calls for a dedicated amplifier channel, a 70V/8-ohm DSP amplifier, or includes built-in amplification. Review the wiring diagram for the subwoofer’s voice-coil configuration, speaker-level or wireless connection options, and any outdoor installation requirements before pulling cable.

Sealed subwoofers use enclosed cabinets for controlled bass and typically suit indoor home theater or AV installations, while buried subwoofers install below ground for discreet outdoor audio. Rock-style subwoofers use a weather-resistant enclosure designed to blend into landscaping, whereas surface-mounted subwoofers attach to a deck, patio, or other above-ground surface for easier access and placement.

For indoor rooms, choose a sealed eight-, ten-, or twelve-inch subwoofer based on the room layout, available space, and desired bass output, with amplified, wireless, and automatic room EQ features available on select models. For outdoor and landscape audio systems, consider an eight-inch rock enclosure, an eight-, ten-, or twelve-inch burial enclosure, a twelve-inch hardscape enclosure, or a ten-inch surface- or burial-mount enclosure based on how discreetly and permanently you want to install it.