Sonance PS-C85RTBF 8-Inch Pro Series In-Ceiling Baffle Speaker

Product Overview

The Sonance PS-C85RTBF is the baffle-only version of the Pro Series High Output 8-inch in-ceiling speaker, designed to install into a separately purchased back box for new-construction commercial projects. It delivers the same coaxial 8-inch woofer and 1.4-inch compression driver performance as the standard PS-C85RT in a format built for plenum-isolated back-box mounting.

Product Description

As part of the Sonance Pro Series High Output lineup, the PS-C85RTBF (Black, RAL 7021) pairs an 8-inch aluminum cone woofer, Santoprene surround, with a 1.4-inch aluminum dome compression driver for extended low-frequency output and high SPL in commercial spaces. Because it is a baffle-only loudspeaker, it must be installed with the matching PS-C85BB back box, giving specifying engineers control over enclosure volume and plenum separation on larger jobs. Field-selectable 120-degree or 80-degree dispersion lets one SKU serve open floor plans and narrower, high-ceiling throws alike, and the integrated distributed-audio transformer switches between 70V/100V taps (120W, 60W, 30W) or a 70V 15W tap for lower-output zones. The PC/ABS enclosure, steel grille, and powder-coated finish are rated UL 1480A, UL 2043, and NFPA 90A/70 compliant for above-ceiling plenum installation. Integrators sourcing the PS-C85RTBF for a new build can review the broader Sonance in-ceiling speakers lineup to plan matching back boxes, tile bridges, and grille finishes in the same order.

Key Features

• Baffle-Only Design Installs into the separate PS-C85BB back box for controlled enclosure volume in new construction.
• 8-Inch Coaxial Driver 1.4-inch aluminum dome compression driver paired with an 8-inch aluminum cone woofer, Santoprene surround.
• Field-Selectable Dispersion 120-degree or 80-degree coverage pattern set on site to match room layout.
• 150W RMS Power Handling 150 watts RMS / 600 watts peak, up to 114dB SPL (120dB peak).
• Integrated 70V/100V Transformer Distributed audio taps at 120W, 60W, 30W (70V/100V) and 15W (70V).
• Plenum-Rated Materials UL 1480A, UL 2043 listed enclosure with NFPA 90A and NFPA 70 compliance.

Typical Applications

• Restaurants and bars
• Retail stores
• Corporate offices
• Houses of worship
• New-construction commercial ceilings

Technical Specifications

Frequently Asked Questions

Does the PS-C85RTBF include a back box?

No. The PS-C85RTBF is a baffle-only speaker and must be paired with the separately sold PS-C85BB back box.

What is the cut-out size for the PS-C85RTBF?

The recommended ceiling cut-out diameter is 10.125 inches.

What power handling does the PS-C85RTBF have?

It is rated for 150 watts RMS with 600 watts peak power handling at 8 ohms.

Can the PS-C85RTBF be used on a 70V distributed line?

Yes, its integrated transformer offers 70V/100V taps at 120W, 60W, and 30W, plus a 70V 15W tap.

Is the PS-C85RTBF suitable for plenum ceilings?

Yes, it is UL 1480A and UL 2043 listed and complies with NFPA 90A and NFPA 70 for plenum installation.