The Bose Professional DesignMax DM5C in-ceiling loudspeakers are engineered to deliver balanced, high-fidelity audio for commercial environments where clarity, consistency, and visual integration are essential. A coaxial two-way design is used to produce rich low frequencies and articulate high frequencies, making speech and music reproduction clear and natural across a wide listening area. With a frequency range extending from 65 Hz to 20 kHz, reliable sound coverage is achieved without the need for additional DSP or equalization.

A refined architectural appearance is maintained through a low-profile form factor and magnetically attached grilles, allowing the loudspeakers to blend seamlessly into a wide range of interior designs. Installation efficiency is improved through the QuickHold mounting system, which is designed to reduce labor time and minimize installation strain. The DesignMax DM5C is suited for indoor commercial installations where dependable performance and long-term durability are required, and it is fully compatible with professional audio infrastructures supported by Bose Professional.

Key Features 

Coaxial Two-Way Driver Design
A 5.25-inch woofer and a 1-inch coaxially mounted tweeter are combined to ensure aligned sound dispersion. This configuration allows consistent tonal balance and intelligibility to be maintained throughout the listening area.

Dispersion Alignment System
Uniform 130-degree conical coverage is achieved by matching the woofer’s coverage pattern to that of the tweeter. As a result, sound is distributed evenly, reducing hot spots and drop-off zones within the room.

Optimized Performance Without DSP
High-quality sound is delivered without requiring external DSP or EQ. When compatible Bose Professional amplifiers and processors are used, additional voicing and SmartBass processing can be enabled for expanded performance at any listening level.

Architectural Aesthetics
A minimal-bezel grille design is provided in black or white, with paintable finishes available to match interior décor. Logos are rotatable and removable, allowing a clean, unobtrusive appearance to be preserved.

QuickHold Installation System
Installation time is reduced through spring-loaded QuickHold mounting arms. This system is designed to improve safety, reduce installer fatigue, and lower the risk of product damage during mounting.

Industry-Standard Integration
Euroblock connectors are included for straightforward wiring. In-ceiling models are supplied with plenum-rated backcans, tile bridges, and front-access wiring, simplifying installation and ongoing maintenance.

 Specifications

Compliance and Safety
UL 1480A certified and compliant with UL 2043 for plenum-space installation. NFPA 70 and NFPA 90A standards are met, and CE compliance is maintained.

Physical Characteristics
Available in black (RAL 9005) and white (similar to RAL 9003), with paintable finishes. An engineered-plastic front baffle and integrated steel-formed back can are used. The loudspeaker is intended for indoor use only. A magnetically attached perforated steel grille with safety tether is included. Ceiling cutout size is 9.8 inches (250 mm). Three QuickHold spring-loaded mounting arms and three safety cable attachment points are provided. Operating temperature range is 0 °C to 50 °C (32 °F to 122 °F).

Dimensions and Weight
Loudspeaker dimensions measure 11.9 in × 8.1 in (303 mm × 205 mm) diameter × depth, with a backcan depth of 7.6 in (192 mm). Net weight is 9.6 lb (4.5 kg) per loudspeaker with grille. Shipping weight is 29.0 lb (13.2 kg) per pair.

Performance
Frequency range (-10 dB) is rated at 65 Hz to 20,000 Hz. Nominal impedance is 8 ohms with transformer bypass. Calculated maximum SPL is 105 dB at 1 m. Sensitivity is rated at 87 dB SPL at 1 W, 1 m. Long-term continuous power handling is 60 W, with peak handling up to 240 W. A passive 2-way crossover at 1.8 kHz is employed, with recommended high-pass protection at 65 Hz using a 24 dB/octave filter.

Transformer Taps
100V taps include 6, 12, 25, and 50 W with bypass.
70V taps include 3, 6, 12, 25, and 50 W with bypass.

Transducers
High frequencies are produced by a 1-inch (25 mm) neodymium dome tweeter, coaxially mounted. Low frequencies are handled by a 5.25-inch (133 mm) woofer.

Conclusion

The Bose Professional DesignMax DM5C in-ceiling loudspeakers are designed to provide consistent, high-quality audio performance while maintaining a discreet architectural presence. Through a combination of coaxial driver technology, wide and uniform coverage, and installation-friendly design, dependable sound reinforcement is achieved for a broad range of commercial applications. Long-term reliability, safety compliance, and professional integration are emphasized, making the DM5C a practical and refined solution for modern indoor sound installations.