AtlasIED 191‑78 Adjustable Enclosure with Mounting Bracket

The AtlasIED 191‑78 enclosure is a premium square recessed back-box designed for seamless installation of commercial and professional 8″ loudspeakers. Constructed of welded cold-rolled steel (CRS) with a black enamel finish, this enclosure is undercoated to eliminate mechanical and acoustical resonances and lined with patch-jute for enhanced sound quality. Ideal for stock setups, its adjustable mounting bracket (ranging 1/16″–3/4″) allows flexible installation in various ceiling types and depths.

Compact yet versatile, the 191‑78 features four compound conduit knockouts, simplifying wiring during installation. Whether paired with multiple AtlasIED grilles or integrated into existing audio systems, this enclosure ensures professional-grade performance and reliability in a durable, space-conscious form factor.

Key Features

• Adjustable Mounting Bracket: Adapts from 1/16″ to 3/4″ ceiling depths.
• CRS Construction: Welded cold-rolled steel with heavy undercoating and black enamel finish.
• Patch-Jute Lining: Improves sound clarity by dampening unwanted resonances.
• Conduit Knockouts: Four compound knockouts for easy wiring and installation.
• Professional Grade: Square recessed design meets commercial audio installation needs.

Technical Specifications

• Height: 11 11/16″ (29.7 cm)
• Depth: 4″ (10.16 cm)
• Material: Welded cold‑rolled steel (CRS)
• Shipping Weight: 4 lbs (1.81 kg)
• Bracket Range: 1/16″–3/4″ ceiling depth
• Shelf Warranty: 60 months from date of purchase

Included In The Box

• AtlasIED 191‑78 square recessed enclosure
• Adjustable mounting bracket (1/16″–3/4″ range)
• Four compound conduit knockout openings