SF 28PT - Loudspeaker Extron - Free user manual and instructions
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| Product Type | Surface-mount loudspeaker |
| Brand | Extron |
| Model | SF 28PT |
| Driver Size | 8 inches (203 mm) cone driver |
| Frequency Response | 60 Hz – 20 kHz |
| Power Handling (RMS) | 60 watts |
| Impedance | 8 ohms |
| Sensitivity | 89 dB SPL (1W/1m) |
| Coverage Angle | 90° conical |
| Enclosure Material | High-impact ABS plastic, plenum rated |
| Color | White or black |
| Dimensions (H x W x D) | 280 mm x 280 mm x 230 mm |
| Weight | 3.5 kg (7.7 lbs) |
| Mounting Type | Surface mount with included bracket |
| Included Accessories | Mounting bracket, screws, wire connector |
| Plenum Rating | Yes (UL 2043) |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Safety Certifications | UL, CE, RoHS |
| Cleaning Instructions | Wipe with a dry cloth; do not use solvents |
| Spare Parts Availability | Contact Extron support for replacement drivers or grilles |
Frequently Asked Questions - SF 28PT Extron
How do I mount the SF 28PT speaker?
Use the included surface-mount bracket. Attach the bracket to the wall or ceiling with screws (not included), then secure the speaker onto the bracket using the locking mechanism. Refer to the manual for torque specifications.
What gauge wire should I use for wiring?
For runs up to 50 ft (15 m), use 16 AWG; for longer runs up to 100 ft (30 m), use 14 AWG. Use stranded, two-conductor speaker wire with a compatible connector.
Can I connect the SF 28PT to any amplifier?
Yes, as long as the amplifier is rated for 8-ohm loads and provides sufficient power (recommended 30-90 watts RMS per channel). Avoid using a 70V/100V line system unless the speaker is specifically designed for it.
What is the ideal placement for best sound?
Mount at ear level for seated audiences, or slightly above. In a rectangular room, place along the longer wall. Avoid corners to prevent excessive bass buildup. Maintain at least 6 inches (15 cm) clearance from the ceiling for proper dispersion.
Is the SF 28PT suitable for outdoor use?
No, this speaker is designed for indoor use only. Exposure to moisture or extreme temperatures may damage the components and void the warranty.
How do I clean the speaker?
Disconnect the speaker from power/amplifier. Use a soft, dry microfiber cloth to wipe the enclosure and grille. Do not use water, cleaning solvents, or abrasive materials.
What should I do if there is no sound output?
Check amplifier power and volume. Ensure speaker wires are securely connected to both amplifier and speaker terminals. Test with another speaker to rule out amplifier issues. If still no sound, inspect the driver for visible damage or contact support.
Can I paint the speaker to match my decor?
Yes, but only the grille and the front baffle. Use a thin, water-based paint and a spray gun or brush. Avoid painting the driver (cone) or the rear of the enclosure. Let it dry completely before use.
What is the warranty period?
Extron offers a 3-year warranty from the date of purchase against defects in materials and workmanship. Registration is recommended for full coverage.
Where can I find replacement parts?
Contact Extron customer support or an authorized distributor. Provide the model number (SF 28PT) and serial number. Typical spare parts include replacement drivers, grilles, and mounting brackets.
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USER MANUAL SF 28PT Extron
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Product information
Brand : Extron
Model : SF 28PT
Category : Loudspeaker