Sonance DOS Plaster Shim – Drywall Mounting Depth Spacer

Product Overview

The Sonance DOS Plaster Shim is a mounting accessory used to add depth clearance behind an in-wall or in-ceiling speaker bracket during rough-in. It is intended for installers and integrators who need to compensate for extra-thick drywall, plaster, or finish material on a job site. The shim keeps the speaker baffle sitting flush once the final wall surface is applied.

Product Description

Integrators working with Sonance architectural speakers frequently encounter wall assemblies that are thicker than a standard mounting bracket anticipates, whether due to sound-isolation layers, plaster veneer, or double-layer drywall. The DOS Plaster Shim is designed to solve exactly that problem by inserting behind the speaker's mounting platform to restore proper depth before the grille is installed. Using the correct shim avoids a proud or recessed grille line, which is one of the most common callback issues on finish day. Because it is a simple mechanical spacer rather than an electronic component, there is no wiring or configuration involved — it installs during rough carpentry or drywall finishing. Installers commonly stock a few of these shims alongside in-ceiling speaker mounting platforms so a mismatched wall thickness does not stall a project. The part is sold to support Sonance architectural speaker lines that use plaster-ring style mounting platforms. Keeping a shim on hand is inexpensive insurance against a wall assembly that was framed or finished thicker than the original drawings called for.

Key Features

• Mounting Depth Correction — Compensates for thicker-than-standard drywall or plaster wall assemblies.
• Simple Mechanical Fit — Installs behind the speaker mounting platform with no wiring or tools beyond a driver.
• Finish-Day Protection — Prevents a proud or recessed grille line after wall finishing is complete.
• Compatible Accessory — Designed to pair with Sonance architectural in-wall and in-ceiling mounting platforms.

Typical Applications

• New construction with double-layer or sound-rated drywall
• Renovation projects with plaster or thick finish walls
• Any rough-in where wall thickness varies from the speaker's standard depth rating