Atlas Sound SD72W-KIT SD72 Speaker, 62-8 Baffle, CS95-8 Back Box, and 81-8R T-Bar Bridge Kit (Must purchase in multiples of 12)

Product Overview

The AtlasIED SD72W-KIT is a complete 8" in-ceiling speaker assembly for 70V paging and background music systems, combining the SD72W dual-cone speaker with factory-installed 62-8 baffle, the CS95-8 recessed back box, and the 81-8R T-bar tile bridge in one part number. Bundling these matched components removes the guesswork from ceiling speaker installation in suspended-tile commercial ceilings and keeps bid sheets simple for integrators specifying distributed audio at scale. The kit is sold in multiples of 12, which aligns with the per-floor and per-zone quantities typical of commercial paging system rollouts. For offices, schools, retail, and healthcare distributed audio, this is a one-line-item solution.

Product Description

At the heart of the kit, the SD72W is a dual-cone, 25-watt, 8" (205 mm) loudspeaker with a 10 oz (260 g) ceramic magnet. Its curvilinear, treated-paper cone reduces harmonic distortion, and a full 1" copper voice coil on a black anodized aluminum former improves power dissipation under continuous paging duty. A factory-installed 25V/70.7V line-matching transformer offers tap selections from 0.25 to 5 watts, letting designers balance SPL and amplifier loading across long speaker runs in a constant-voltage distributed audio system.

The SD72W is the next generation of AtlasIED's high-performance cone speakers and is voiced very similarly to the long-running C-Series, so contractors who have standardized on C-Series product will know exactly what to expect. The speaker operates across a nominal 45 Hz – 19 kHz frequency range with 97 dB sensitivity and 105-degree dispersion, providing intelligible paging and comfortable background music coverage from standard ceiling heights.

The factory-installed CRS baffle uses concealed speaker mounting studs, ships with screw-mount hardware, and carries standard mounting holes compatible with the majority of AtlasIED 8" tile bridges, mounting rings, and enclosures. The CS95-8 recessed round stacking enclosure is one-piece CRS construction — undercoated, patch-jute lined, and epoxy finished — with four 1/2"–3/4" combination conduit knockouts, four J-clips, and two flexible perforated mounting straps for code-friendly conduit terminations. The 81-8R tile bridge is 24-gauge CRS with an electrogalvanized rust-resistant finish and a round cutout sized for the CS95-8, distributing the assembly's weight across ceiling grid T-bars per standard suspended-ceiling installation practice. Note: the SD72W-KIT must be ordered in multiples of 12.

Key Features

• Complete Four-Component Kit — Speaker, baffle, back box, and tile bridge arrive under one part number, simplifying procurement and site logistics.
• 25W Dual-Cone 8" Driver — The curvilinear treated-paper cone and 10 oz ceramic magnet deliver low-distortion paging and background music.
• 25V/70.7V Transformer Installed — Factory-fitted line-matching transformer with 0.25–5 watt taps drops directly onto constant-voltage speaker lines.
• C-Series Sonic Continuity — Voicing closely matches the preceding AtlasIED C-Series, so existing system designs translate without re-engineering.
• 1" Copper Voice Coil — The black anodized aluminum former dissipates heat for reliable continuous-duty operation.
• Code-Friendly CS95-8 Back Box — One-piece CRS enclosure includes four conduit knockouts, J-clips, and perforated mounting straps for clean rough-in.
• 81-8R T-Bar Tile Bridge — Electrogalvanized 24-gauge CRS bridge supports the assembly across ceiling grid rails.
• Concealed Mounting Studs — The factory-installed CRS baffle presents a clean finished appearance with hidden hardware.

Typical Applications

• Conference rooms and commercial meeting spaces needing distributed audio
• Training rooms and multi-purpose rooms with paging and BGM
• House of worship lobbies, classrooms, and overflow areas
• Government spaces with building-wide paging requirements
• Boardroom and huddle room speech reinforcement zones

Technical Specifications

Frequently Asked Questions

Why must the SD72W-KIT be ordered in multiples of 12?
AtlasIED packages this kit in case quantities of 12, which matches typical zone and per-floor counts in commercial ceiling speaker installations. The listed price covers one case of 12 kits.

Is everything needed for installation included?
Each kit contains the speaker with factory-installed baffle and transformer, the CS95-8 back box, and the 81-8R tile bridge. You supply the 70V speaker cable, conduit fittings as required by local code, and the constant-voltage amplifier.

What amplifier should drive these speakers?
Any 25V or 70.7V constant-voltage amplifier works. Sum the selected wattage taps across all speakers and choose an amplifier with comfortable headroom above that total.

Will it sound like the older AtlasIED C-Series?
Yes. The SD72W is the next generation of the C-Series cone speakers and is voiced very similarly, so existing designs and EQ expectations carry over.

Is the kit suitable for plenum ceilings?
The assembly carries UL 2043 listing, which addresses fire and smoke characteristics for air-handling spaces. Confirm requirements with your local authority having jurisdiction.

What warranty and support are available?
AtlasIED provides a 60-month warranty from date of purchase. For tap calculations, zone layout, or amplifier matching help, contact Creation Networks at creationnetworks.net.