Description
Bring clear background music and natural voice reproduction to rooms with limited ceiling space using a premium pair of low-profile Bose Professional ceiling loudspeakers.
The Bose Professional DesignMax DM2C-LP is a pair of compact in-ceiling loudspeakers designed for commercial background music, speech and general room audio. Each speaker combines a custom 2.25-inch full-range driver, wide conical coverage, selectable 70V/100V transformer taps, a low-profile plenum-rated backcan and the Bose QuickHold mounting system. It is a practical choice for offices, meeting rooms, retail stores, restaurants, hotels, clinics and other spaces where ceiling depth and clean appearance are important.
Sold as a Complete Pair
This product includes two matching Bose DesignMax DM2C-LP ceiling loudspeakers. It is suitable for a small room, two separate compact areas or as the starting point for a larger distributed audio system.
Quantity: 2 ceiling loudspeakers
Driver: One 2.25-inch full-range driver per speaker
System options: 70V, 100V or 16Ω transformer-bypass operation
Finish: White minimum-bezel magnetic grilles
Premium Audio for Tight Ceiling Spaces
The DM2C-LP is designed for installations where a conventional commercial ceiling speaker may be too deep. Its integrated backcan is approximately 99mm or 3.9 inches deep, while the complete speaker has an overall depth of approximately 110mm or 4.3 inches.
The shallow enclosure makes the speaker useful for compact ceiling cavities, suspended ceilings, meeting rooms and renovation projects where ductwork, pipes or building structure reduce the available space.
Clear Full-Range Music and Speech
Each loudspeaker uses one custom Bose Professional 2.25-inch full-range driver. It is engineered for clear vocals, announcements and balanced low-level background music without requiring a separate tweeter.
The published frequency range is 85Hz–19kHz, making the DM2C-LP particularly suitable for speech, ambient music and general commercial audio in smaller or lower-ceiling spaces.
Best suited for: Background music, speech, meetings and general room audio.
For music systems requiring substantial deep bass or high-volume foreground performance, consider adding a compatible commercial subwoofer or selecting a larger DesignMax model.
Wide 150° Conical Coverage
The DM2C-LP provides wide 150-degree nominal conical coverage, helping distribute sound across the listening area from a compact ceiling location.
Wide coverage can be useful in offices, meeting rooms, retail spaces and hospitality areas where smooth background audio is more important than highly directional sound.
Recommended Commercial Applications
| Application | Typical Use |
|---|---|
| Office or Meeting Room | Speech, conferencing support and low-level background music |
| Retail Store | Customer-facing music and general announcements |
| Restaurant or Café | Comfortable dining-area music and staff communication |
| Hotel or Hospitality Area | Guest rooms, corridors, meeting areas and reception spaces |
| Clinic or Reception Area | Clear speech and unobtrusive background audio |
| Place of Worship | Supporting spaces, offices, classrooms and common areas |
70V and 100V Commercial Audio Compatibility
A built-in transformer allows the speakers to connect to compatible 70V or 100V commercial amplifiers. This makes it practical to operate several DM2C-LP speakers over longer cable distances.
In a distributed system, speakers are normally connected electrically in parallel. Add the selected transformer tap of every speaker to calculate the total amplifier load.
Selectable Transformer Taps
| Operating Mode | Available Settings Per Speaker |
|---|---|
| 70V | 1.2W / 2.3W / 4.5W / 9W |
| 100V | 2.3W / 4.5W / 9W |
| Transformer Bypass | 16Ω nominal impedance per speaker |
Select the tap setting before operating the system.
Do not use transformer bypass and a 70V or 100V connection at the same time. Low-impedance bypass wiring must be calculated separately.
Total Transformer Load for the Pair
| System | Tap Per Speaker | Pair Load |
|---|---|---|
| 70V | 1.2W | 2.4W |
| 70V or 100V | 2.3W | 4.6W |
| 70V or 100V | 4.5W | 9W |
| 70V or 100V | 9W | 18W |
Amplifier Headroom
For commercial system planning, keep approximately 20% of the amplifier’s output available as operating headroom. Divide the total speaker load by 0.8 to calculate the minimum planning capacity.
| Pair Load | Minimum Capacity with 20% Headroom |
|---|---|
| 2.4W | 3W or greater |
| 4.6W | 5.75W or greater |
| 9W | 11.25W or greater |
| 18W | 22.5W or greater |
Select the next practical commercial amplifier size above the calculated requirement. Include every additional speaker connected to the same amplifier when determining the final system load.
16Ω Transformer-Bypass Operation
The tap selector also provides a transformer-bypass position. In bypass mode, each DM2C-LP operates as a 16-ohm loudspeaker.
Low-impedance wiring must be designed according to the amplifier’s supported load and the series or parallel connection arrangement. Bypass-mode calculations are different from 70V and 100V transformer load calculations.
Front-Access Wiring and Loop-Through Connector
A front-mounted six-pin Euroblock connector provides input and loop-through terminals for continuing the speaker line to another loudspeaker.
Front access makes connection and troubleshooting easier after the speaker has been installed. The connector accepts approximately 18 AWG to 14 AWG speaker wire.
QuickHold Installation System
Two Bose QuickHold spring-loaded mounting arms secure each speaker to the ceiling. The mechanism is designed to reduce installation time and help prevent the mounting arms from damaging the ceiling or speaker.
Each loudspeaker also provides two safety-cable attachment points. Install the required safety cable and follow local building requirements for overhead loudspeaker installation.
Included Adjustable Tile Bridges
Two adjustable tile bridges are included with the pair. They help distribute the speaker weight across a suspended-ceiling grid instead of placing the complete load on one ceiling tile.
The tile bridges should be installed according to the Bose Professional instructions and the requirements of the ceiling system.
Plenum-Rated Integrated Backcan
The steel-formed backcan is integrated into the loudspeaker and is compliant with UL 2043 for plenum-space installation. The loudspeaker is also UL Listed and UL 1480A rated.
Always confirm Canadian building, electrical and fire-code requirements for the specific project. Product certification does not replace local approval or professional installation requirements.
Minimum-Bezel Magnetic Grilles
Each speaker includes a white, magnetically attached perforated-steel grille with a powder-coated finish and safety tether.
The grille is paintable, and the Bose logo can be rotated or removed. Follow the Bose Professional painting instructions and keep paint away from the acoustic openings and speaker components.
Current DM2C-LP loudspeaker pairs are supplied in white. Optional black replacement grilles are available separately for projects requiring a dark ceiling finish.
Ceiling Cutout and Installation Space
| Ceiling Cutout | 165mm / 6.5 in |
| Overall Grille Diameter | 198mm / 7.8 in |
| Overall Depth | 110mm / 4.3 in |
| Backcan Depth | 99mm / 3.9 in |
| Maximum Ceiling Thickness | 39mm / 1.5 in |
Check above the ceiling for framing, wiring, plumbing, sprinkler lines, ductwork and other obstructions before cutting either opening.
Important Connection Notice
Select the correct 70V, 100V or bypass setting before operating the amplifier.
Do not connect a speaker set to transformer bypass directly to a 70V or 100V amplifier output.
Do not mix 70V and 100V amplifier outputs on the same speaker line.
Keep speaker-line polarity consistent and confirm the complete load before switching on the system.
Switch off and disconnect the amplifier before installing speakers, changing wiring or adjusting the transformer taps.
Technical Specifications
| Brand | Bose Professional |
| Series | DesignMax |
| Model / SKU | DM2C-LP |
| Bose Product Code | 815011-0210 |
| Sold As | Pair |
| Product Type | Low-profile commercial in-ceiling loudspeaker |
| Driver Per Speaker | 1 × 2.25-inch full-range driver |
| Frequency Response | 95Hz–18kHz at -3dB |
| Frequency Range | 85Hz–19kHz at -10dB |
| Nominal Coverage | 150° conical at 1–4kHz |
| Sensitivity | 84dB SPL at 1W / 1m |
| Maximum SPL | 97dB calculated at 1m |
| Long-Term Power Handling | 20W per speaker |
| Peak Power Handling | 80W per speaker |
| 70V Taps | 1.2W / 2.3W / 4.5W / 9W / bypass |
| 100V Taps | 2.3W / 4.5W / 9W / bypass |
| Bypass Impedance | 16Ω nominal per speaker |
| Recommended High-Pass Protection | 85Hz with a recommended 24dB/octave filter |
| Connector | Front-mounted 6-pin Euroblock with loop-through |
| Supported Wire Size | 18 AWG to 14 AWG |
| Ceiling Cutout | 165mm / 6.5 in per speaker |
| Overall Size Per Speaker | 198mm diameter × 110mm depth / 7.8 × 4.3 in |
| Backcan Size | 155mm diameter × 99mm depth / 6.1 × 3.9 in |
| Maximum Ceiling Thickness | 39mm / 1.5 in |
| Mounting | Two QuickHold arms and two safety-cable tabs per speaker |
| Enclosure | Engineered-plastics baffle with integrated steel backcan |
| Grille | Paintable magnetic perforated-steel grille with safety tether |
| Environmental Use | Indoor only |
| Compliance | UL Listed, UL 1480A and UL 2043 plenum compliant |
| Net Weight Per Speaker | 1.6kg / 3.6 lb with grille |
What’s Included
- 2 × Bose Professional DesignMax DM2C-LP loudspeakers
- 2 × White magnetic speaker grilles
- 2 × Adjustable tile bridges
- 1 × Ceiling cutout template
- 1 × Bose Professional installation guide
Warranty
Bose Professional DM2C-LP: 5-Year Limited Manufacturer’s Warranty for passive loudspeaker products, subject to Bose Professional warranty terms and proof of purchase.
Frequently Asked Questions
Is the DM2C-LP sold individually?
This product is supplied as a factory pair containing two DM2C-LP loudspeakers, two grilles and two tile bridges.
Is the DM2C-LP a two-way speaker?
No. Each DM2C-LP uses one custom 2.25-inch full-range driver rather than separate woofer and tweeter components.
Can the pair connect to a 70V or 100V amplifier?
Yes. Each speaker includes selectable transformer taps for compatible 70V and 100V commercial audio systems.
What is the total load when both speakers are set to 9W?
Two speakers at 9W create an 18W transformer load. Plan for an amplifier capacity of at least 22.5W to maintain approximately 20% headroom.
Can the DM2C-LP connect to a low-impedance amplifier?
Yes, when the selector is placed in transformer-bypass mode. Each speaker then presents a nominal 16-ohm load. The complete low-impedance wiring arrangement must remain compatible with the amplifier.
Does the pair include tile bridges?
Yes. Two adjustable tile bridges are included, one for each speaker.
Is the DM2C-LP suitable for plenum ceiling spaces?
The integrated backcan is compliant with UL 2043 for plenum-space installation. Confirm all local Canadian building and electrical-code requirements before installation.
Can the speaker be installed outdoors?
No. Bose Professional specifies the DM2C-LP for indoor use only.
Need Help Planning the System?
Send AVTECK the room dimensions, ceiling height, required speaker quantity, amplifier model and background-music or speech requirements. We can help calculate the transformer load and recommend a practical Bose Professional speaker layout.
