1. Introduction
The Bose DesignMax DM2C-LP is a high-quality in-ceiling loudspeaker engineered to deliver excellent sound performance with an appealing aesthetic. It is specifically designed for background music applications, featuring a 2.25-inch full-range driver that accurately reproduces frequencies from 85Hz to 19kHz without requiring additional DSP or EQ. Its 180-degree conical coverage ensures consistent sound distribution throughout the listening area.
This manual provides essential information for the proper installation, operation, and maintenance of your DesignMax DM2C-LP loudspeakers.
Figure 1: Bose DesignMax DM2C-LP In-Ceiling Loudspeaker
2. Safety Information
Please read and understand all safety instructions before installing or operating this product. Failure to do so may result in injury or damage to the equipment.
- Professional Installation: Installation should be performed by qualified personnel in accordance with all local electrical and building codes.
- Power Disconnection: Always disconnect power to the installation area before beginning any wiring or installation procedures.
- Ventilation: Ensure adequate ventilation around the speaker. Do not obstruct ventilation openings.
- Moisture: This product is designed for indoor use only and is not waterproof. Avoid exposure to water or excessive moisture.
- Weight: Ensure the mounting surface can safely support the weight of the loudspeaker.
3. Package Contents
Verify that all components are present in the package:
- Bose DesignMax DM2C-LP In-Ceiling Loudspeaker (2 units)
- Adjustable Tile-Bridge (for installation in suspended ceilings)
- Installation Template
Figure 2: Example of an included component (e.g., part of the Adjustable Tile-Bridge)
4. Setup and Installation
The DesignMax DM2C-LP is designed for ceiling mount installation and features a low-profile backcan for fitting into confined spaces. QuickHold mounting arms facilitate easy and secure installation.
4.1 Mounting
- Prepare the Opening: Use the provided installation template to mark and cut the appropriate opening in the ceiling. Ensure there is sufficient clearance behind the ceiling for the speaker's backcan.
- Install Tile-Bridge (if applicable): For suspended ceiling installations, position the adjustable tile-bridge across the ceiling grid before inserting the speaker.
- Insert Speaker: Carefully insert the loudspeaker into the prepared opening.
- Secure with QuickHold Arms: The QuickHold mounting arms will automatically engage as the speaker is inserted. Tighten the screws on the front baffle to fully secure the speaker to the ceiling.
Figure 3: Rear view showing QuickHold mounting arms
4.2 Wiring and Connections
The DM2C-LP supports both 16-ohm low-impedance and 70-volt/100-volt constant voltage operation via Euroblock connectors. Its 16-ohm design allows for up to four units to be connected to a single low-impedance amplifier output.
- Select Wiring Mode: Determine whether you will use low-impedance (16-ohm) or constant voltage (70V/100V) operation based on your amplifier and system design.
- Connect Wiring: Using appropriate gauge speaker wire, connect the amplifier output to the Euroblock connector terminals on the back of the speaker. Ensure correct polarity (+ to + and - to -).
- Set Tap (for 70V/100V): If using 70V/100V operation, adjust the tap setting on the speaker's transformer to the desired wattage (e.g., 16W, 8W, 4W, 2W, 1W).
Figure 4: Bottom view with Euroblock connectors and tap selector
5. Operating Instructions
Once installed and wired correctly, operating the DesignMax DM2C-LP loudspeakers is straightforward as they are passive speakers. Control of the audio system is managed by the connected amplifier and audio source.
- Power On: Turn on your amplifier and audio source.
- Volume Control: Adjust the volume using your amplifier's controls.
- Audio Source: Play audio from your connected device (e.g., smartphone, tablet, MP3 player, desktop, television, projector, laptop).
6. Maintenance
The DesignMax DM2C-LP loudspeakers require minimal maintenance to ensure long-term performance.
- Cleaning: Use a soft, dry cloth to clean the speaker grille and surrounding surfaces. Do not use abrasive cleaners or solvents.
- Inspection: Periodically inspect the speaker for any visible damage or loose connections.
- Environment: Ensure the speaker remains in a dry, indoor environment within its specified operating temperature range.
7. Troubleshooting
If you encounter issues with your DesignMax DM2C-LP loudspeakers, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound |
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| Distorted Sound |
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| Uneven Sound Distribution |
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8. Specifications
| Feature | Specification |
|---|---|
| Model Name | DM2C LP |
| Item Model Number | 815011-0110 |
| Brand | Bose Professional |
| Speaker Type | In-Ceiling |
| Mounting Type | Ceiling Mount |
| Speaker Size | 2.25 Inches (Woofer/Subwoofer Diameter) |
| Speaker Maximum Output Power | 16 Watts |
| Impedance | 16 Ohm |
| Frequency Response | 85 Hz (lower limit) |
| Coverage | 180-degree Conical |
| Connectivity Technology | Wired (Euroblock Connectors) |
| Input Voltage | 100 Volts (for 70V/100V systems) |
| Product Dimensions | 19.6 x 10.75 x 7.5 inches |
| Item Weight | 2.2 pounds |
| Recommended Uses | Indoor |
| Water Resistance Level | Not Water Resistant |
| Included Components | Adjustable Tile-Bridge, Template |
| UPC | 017817795715 |
9. Warranty and Support
The Bose DesignMax DM2C-LP In-Ceiling Loudspeaker comes with a Limited Warranty provided by Bose Professional. For specific warranty terms and conditions, please refer to the documentation included with your product or visit the official Bose Professional website.
For technical support, service, or warranty claims, please contact Bose Professional customer service. Ensure you have your product model number (815011-0110) and proof of purchase available when contacting support.
Manufacturer: Bose Professional
