PC640 - Loudspeaker OSD Audio - Free user manual and instructions

Type	In-Ceiling Speaker
Driver	6.5" Polypropylene Woofer
Tweeter	1" Silk Dome
Power Handling	40W RMS, 80W Peak
Impedance	8 ohms
Frequency Response	45Hz - 20kHz
Sensitivity	88dB SPL (1W/1m)
Cutout Diameter	7.5 inches
Overall Diameter	8.5 inches
Mounting Depth	3.5 inches
Weight	3.5 lbs (each)
Grille	White paintable metal mesh
Mounting System	Spring-loaded clamping tabs
Recommended Wire	16-18 AWG
Power Source	Passive (no external power required)
Placement	Indoor, ceiling mount
Cleaning	Wipe with dry or slightly damp cloth
Safety	Ensure secure mounting, avoid over-powering
Spare Parts	Grille, mounting tabs (contact support)
Warranty	Limited lifetime warranty

Frequently Asked Questions - PC640 OSD Audio

What is the recommended amplifier power for the PC640?

The PC640 handles up to 40W RMS per speaker. Use an amplifier with 20-80W per channel for best results.

Can I paint the grille to match my ceiling?

Yes, the grille is paintable. Remove it, apply thin coats of latex or spray paint, and let dry completely before reinstalling.

What is the cutout size required for installation?

The needed cutout diameter is 7.5 inches. Use a template or measure carefully before cutting.

How do I connect the speaker wire?

Strip the wire (1/4 inch), twist strands, and insert into the spring-loaded terminals. Match positive/negative polarity.

Are these speakers suitable for outdoor use?

No, the PC640 is designed for indoor use only. Exposure to moisture or extreme temperatures may damage them.

How do I clean the speakers?

Wipe the grille and frame with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth. Avoid liquids on the driver.

Can I mount the speaker in walls?

The PC640 is specifically designed for ceiling installation. For wall use, consider OSD's wall-mount models.

What is the impedance of the PC640?

Each speaker is 8 ohms. For multi-speaker setups, ensure your amplifier supports the total load.

Does the speaker include a back box?

No, the PC640 is an open-back design. For sound isolation, consider adding a back box sold separately.

How do I adjust the tweeter level?

Some models have a treble switch on the front baffle. Refer to your specific unit; if no switch, tweeter level is fixed.

USER MANUAL PC640 OSD Audio

• 8Ω / 70 volt selectable.
• High-efficiency speaker deliver superior performance.
- 140° wide-dispersion coaxial driver for broad even coverage.
• Extremely good off-axis response.
• Specially designed to provide full spectrum sound in open space environments.
• High power handling capability for foreground sound.
- Easy to use cable suspension system includes 10" reinforced cable.
• Easy installation for high-ceiling applications.
• Low-resonance cabinet structure.
- Ideally suited for application as announcements at airports, shopping malls and restaurants.
• Input impedance easily switchable.
• Available in White or Black.

TECHNICAL CHARACTERISTICS

Speaker:	6.5"+tweeter
Rated power:	100W
Impedance:	8 Ω
70 V line power:	20 - 10 - 5 - 2.5 W
Frequency Response:	100Hz - 22KHz
Sensitivity:	89dB
Dispersion angle:	140°