The JBL MTC-47MR is a six-pack of professional mud ring construction brackets designed to streamline and standardize the rough-in installation of compatible JBL Control 18 and Control 47 series in-ceiling loudspeakers. These brackets serve as critical mounting templates and structural supports that are installed during the construction or renovation phase, prior to the application of the final ceiling surface such as drywall, plaster, or tile. Each mud ring provides a rigid, accurately aligned metal frame within the ceiling cavity, ensuring that the speaker's back enclosure mounts perfectly flush, level, and securely anchored. This systematic approach is essential for achieving a clean, architectural finish where the speaker grille integrates seamlessly into the ceiling plane, with no visible screws or misalignment.

Constructed from durable, galvanized steel, these mud rings are built to resist corrosion and withstand the demanding environment of a construction site. Their design typically features an adjustable frame to accommodate variations in standard ceiling joist spacing, offering flexibility to meet different building specifications. Each ring includes pre-punched holes and clear alignment guides that correspond exactly to the mounting points of the specified JBL speaker models, significantly reducing installation time and minimizing errors. By establishing a stable, vibration-resistant foundation, the mud rings also contribute to the acoustic performance of the speakers by helping to decouple them from potential structural resonances.

Sold in a convenient six-pack, this product is ideal for contractors and integrators working on multi-room installations, such as in offices, hotels, or residential projects, providing cost-effective bulk packaging for consistent, professional results. Installation involves securing each mud ring to the ceiling framing, mounting the speaker's back can within it, finishing the ceiling, and then installing the speaker transducer and grille from below. The JBL MTC-47MR Mud Ring 6-Pack is an essential tool for ensuring high-quality, reliable, and visually flawless installations of premium in-ceiling speakers, providing the necessary infrastructure for professional audio performance integrated into custom architecture.