Extron SF 26X (part number 60-1312-03) — a pair of 6.5 in open-back ceiling speakers for 8 ohm direct-drive audio systems.

Some ceiling audio zones run a dedicated amplifier per room rather than a shared 70V/100V loop, which calls for a speaker built purely for 8 ohm operation rather than a tapped transformer design. The SF 26X uses an infinite-baffle open-back enclosure with a 6.5 in polypropylene woofer and 3/4 in PEI dome tweeter behind a 2.3 kHz crossover, mounts with a single captive screw connector, and needs only a 7.6 in cutout and 2 grille hooks to install.

Key Capabilities

• 50 Hz to 20 kHz frequency range (-10 dB, half space).
• 25 W rms pink noise / 50 W rms continuous program per pair.
• 107° conical coverage from 1 kHz to 4 kHz.
• 8 ohm direct-drive only — no 70V/100V transformer taps.
• Full range power limiter protects the tweeter, woofer and crossover.
• Compact 3.0 in enclosure depth and 2.6 lbs weight per speaker.

Where It Is Used

Conference rooms, small offices, and classrooms wired for zone-per-amplifier audio rather than distributed 70V/100V, where a shallow open-back speaker needs to disappear into a standard drop ceiling.

Specifications at a Glance

• Outer dimensions: 3.0 in H x 9.0 in diameter; 7.6 in cutout
• Nominal impedance: 8 ohms; nominal sensitivity 83 dB SPL, 1 W / 1 m
• Included: cutout template, setup guide, 2 grille hooks
• Rated for ISTA 1A carton vibration testing
• Warranty: 5 years parts and labor

Also referenced as Extron SF26X, SF-26X, part number 60131203.