Extron SF 228T Plus (part number 60-1862-03) — a matched pair of 8 in two-way ceiling tile speakers built for distributed 70V/100V audio in commercial spaces.

Rooms wired for 70V or 100V distributed audio often need a shallow, plenum-safe speaker that drops straight into a standard ceiling grid without a separate fire-rated can. The SF 228T Plus pairs a coaxial 8 in polypropylene woofer with a 1.1 in silk dome tweeter around a 2.5 kHz crossover, ships with cross bars sized for a 2x2 tile opening, and carries a UL 2043 plenum rating so it can sit directly in return-air ceilings. A full-range power limiter on the crossover guards the drivers if an amplifier is pushed past its rated output.

Key Capabilities

• 47 Hz to 22 kHz frequency range (-10 dB, half space); response holds within ±3 dB from 63 Hz to 12.5 kHz.
• 90 W rms continuous pink noise, 180 W rms continuous program per pair.
• Selectable 70 V taps (64/32/16/8 W) or 100 V taps (64/32/16 W), plus direct 8 ohm operation.
• 95° conical coverage with 89 dB sensitivity at 1 W / 1 m.
• UL 2043 and UL 1480A listed composite enclosure for plenum airspace.
• Maximum SPL of 104.9 dB at 1 m based on rated maximum input voltage.

Where It Is Used

Conference rooms, training rooms, open-plan offices and retail spaces that already run 70V/100V distributed audio and need a shallow, plenum-rated tile speaker sitting flush beside ceiling-mounted displays.

Specifications at a Glance

• Enclosure: 5.41 in H x 23.75 in W x 23.75 in L, 18.9 lbs each
• Drivers: 8 in polypropylene woofer, 1.1 in silk dome tweeter, 2.5 kHz crossover
• Inputs: (2) 3-pole splicing connectors, 1 input plus loop-through
• Nominal impedance: 8 ohms per speaker
• Warranty: 5 years parts and labor

Also referenced as Extron SF228TPlus, SF-228T-Plus, part number 60186203.