The James Loudspeaker 102SA-5 is an in-wall subwoofer designed to be concealed from view. Like all speakers in the SA series a small opening in the wall or ceiling is the only visible portion of the speaker giving the series its name. Small Aperture, the 5-inch depth allows the speaker to be placed within 2x6in-studded walls and be concealed by drywall, while a 2.68-inch by 23.18-inch grille is the only visible portion of the speaker. The 102SA-5 is built using aircraft grade aluminum and has a half-inch thick back plate to ensure maximum durability and limit the rear sound transmission.