Bose Professional DesignMax DM8C Ceiling Loudspeaker (Each)

Bose Professional DesignMax DM8C is a ceiling loudspeaker designed for commercial audio installations in indoor environments. It enables full-range foreground music and voice playback for integrators and facility operators, supporting distributed sound system workflows. This makes it ideal for venues where consistent coverage and clean integration are critical.

The loudspeaker uses a coaxial two-way driver design with an 8-inch woofer and a center-firing compression driver. It installs using spring-loaded QuickHold mounting arms for in-ceiling mounting. Transformer taps support operation on distributed 70V/100V systems or in low-impedance bypass mode.

The DM8C supports scalable ceiling-speaker layouts across a wide range of room types. Its mounting and wiring approach supports efficient installation and service access. The system is intended for indoor commercial spaces requiring reliable audio coverage.

Key Features

• Coaxial Two-Way Design: 8-inch woofer with center-firing compression driver for full-range playback
• QuickHold Mounting: Spring-loaded mounting arms support fast in-ceiling installation
• Wide Coverage: Conical dispersion supports broad coverage for distributed layouts
• 70V 100V Transformer Taps: Supports distributed systems with selectable tap settings and bypass
• Indoor Commercial Use: Designed for indoor installation environments

Technical Specifications

System Type
Ceiling loudspeaker

Power Handling, Long-Term Continuous
150 W

Power Handling, Peak
600 W

Frequency Range (-10 dB)
52 Hz – 20,000 Hz

Calculated Maximum SPL @ 1 m
113 dB

Sensitivity (SPL/1 W at 1 m)
91 dB

Nominal Impedance
8 Ω (transformer bypass)

Coverage, Horizontal
135° conical

Coverage, Vertical
135° conical

Transformer Taps, 100V
5 W, 10 W, 20 W, 40 W, 80 W, bypass

Transformer Taps, 70V
2.5 W, 5 W, 10 W, 20 W, 40 W, 80 W, bypass

Safety Agency Ratings
UL-1480A, S5597
UL listed in compliance with UL2043 for plenum-space installation
NFPA70 & NFPA90-A
CE compliant

Colors
Black (RAL 9005)
White (RAL 9003)
Paintable

Environmental
Indoor only

Ceiling Cutout
13.8 in (349 mm)

Suspension Mounting
(3) QuickHold spring-loaded mounting arms
(3) Safety cable attachment points

Enclosure Material
Engineered-plastics front baffle with integrated steel-formed backcan

Grille
Magnetically attached perforated steel, powder-coated finish
Paintable, with safety tether

Logo
Rotatable, removable

Operating Temperature Range
0 °C to 50 °C (32 °F to 122 °F)

Shipping Weight
28.0 lb (12.7 kg), single

Crossover
1.5 kHz, passive 2-way crossover

Driver Protection
Recommended high-pass protection 48 Hz with recommended 24 dB/octave filter
Overload protection
Resistor-network power reduction with automatic reset

High-Frequency
1 × 1 in (25 mm) compression driver, coaxial center-firing

Low-Frequency
1 × 8 in (203 mm) woofer