MK850 - Loudspeaker OSD Audio - Free user manual and instructions
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| Product type | Passive in-wall loudspeaker |
| Brand | OSD Audio |
| Model | MK850 |
| Speaker configuration | 2-way |
| Woofer | 8-inch polypropylene cone |
| Tweeter | 1-inch silk dome |
| Impedance | 8 ohms |
| Power handling (RMS) | 50 watts |
| Peak power | 100 watts |
| Frequency response | 40 Hz - 20 kHz |
| Sensitivity | 90 dB (1W/1m) |
| Overall dimensions (H x W x D) | 30.5 x 20.3 x 10.2 cm |
| Weight | 2.8 kg per speaker |
| Cutout dimensions (W x H) | 25.4 x 17.8 cm |
| Mounting depth | 9.0 cm |
| Grille included | Yes |
| Frame material | ABS plastic |
| Connection type | Spring-loaded push terminals |
| Safety warning | Do not expose to direct water or moisture |
| Maintenance and cleaning | Wipe with a soft cloth |
| Spare parts and repairability | Components are not user replaceable; contact OSD Audio for service |
| General usage | Indoor or covered outdoor use |
Frequently Asked Questions - MK850 OSD Audio
How do I connect the OSD Audio MK850 speakers to my amplifier?
Strip 1/2 inch (12 mm) of insulation from each wire. Press the spring-loaded terminal and insert the wire into the hole. Release to secure. For optimal performance, connect the red (+) and black (-) terminals to the corresponding amp channels with the correct polarity.
What amplifier power is recommended for the MK850 speakers?
Each speaker handles up to 50 Watts RMS and 100 Watts peak. An amplifier delivering 25 to 75 Watts per channel is ideal, ensuring enough headroom without risk of clipping.
Can I install the MK850 in a bathroom or outdoors?
The MK850 is designed for indoor applications or covered outdoor areas. Do not expose it to direct water spray or long-term moisture. Use an IP-rated cover or housing for unprotected locations.
What hole size should I cut for mounting?
The required cutout is approximately 25.4 x 17.8 cm (10 x 7 inches). Use the included template to trace the outline, then cut carefully with a drywall saw. Ensure clearance behind the wall for the 9.0 cm mounting depth.
Which tools are needed for installation?
You will need a stud finder, drywall saw, screwdriver, pencil, and a measuring tape. A drill may be helpful for pilot holes when mounting to wood studs.
How do I remove and paint the speaker grille?
Gently pry the grille from its frame using a flat-head screwdriver. Apply two thin coats of spray paint designed for plastic. Let it dry completely before reattaching the grille. The frame can also be painted with a brush, taking care not to block the drivers.
How does the toggle clamp mechanism work?
Insert the speaker into the cutout and rotate the four toggle clamps clockwise until they grip the wall from behind. Tighten each screw firmly to secure the speaker in place. This works with drywall, plaster, and ceiling tiles.
Is there a break-in period for new speakers?
Yes, we recommend playing music at a moderate volume for 10-20 hours. This allows the woofer surround to loosen and the components to settle, resulting in smoother bass and clearer highs.
What should I do if there is no sound from one speaker?
Check the amplifier channel, speaker wire connections, and correct polarity. Swap the speaker with another to isolate the issue. If the problem persists, contact OSD Audio technical support and inspect the terminal for any damage.
How do I clean the MK850 speaker?
Turn off the system. Gently vacuum the grille and drivers with a soft brush attachment. Wipe the frame and cabinet with a dry or slightly damp microfiber cloth. Avoid any solvent-based cleaners that may damage the material.
User questions about MK850 OSD Audio
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USER MANUAL MK850 OSD Audio
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Product information
Brand : OSD Audio
Model : MK850
Category : Loudspeaker