The SD1SM attatches to wood and similar hard surfaces using the included wood screws. Each SD1sm is designed for one channel of audio. An optional equilization module optimizes the SD1sm for use on wood surfaces. The SolidDrive utilizes patent-pending dual-voice coil technology in an aluminum enclosure to transfer acoustic energy to any substrate with very high-powered neodymium magnets and dual symmetrically opposed motors to convert audio signals into powerful vibrations. Those vibrations are transferred into solid surfaces through direct contact.