AtlasIED FC104T-HC 4-Inch In-Ceiling Speaker with 10W 70V Transformer, Hyfridrophobic Treated, 8 Ohms

The AtlasIED FC104‑HC is a compact, high-compliance 4″ full-range speaker delivering 10 W at 8 Ω. Treated with Hyfidrophobic® nanotechnology, it’s built to resist moisture and ideal for public address and background music in challenging environments.

With a smooth frequency response from 150 Hz to 17 kHz and 94 dB sensitivity, the FC104‑HC provides clear, wide-dispersion audio in light-duty distributed systems. The 135° dispersion angle minimizes the number of speakers needed for full coverage.

Key Features

• Hyfidrophobic® Coating: Enhances environmental durability against moisture
• High Compliance Design: Optimized for smooth low-frequency performance
• Wide Dispersion: 135° pattern reduces coverage gaps
• Standard 4″ Mounting: Compatible with common AtlasIED 4″ grilles
• Compact Size: Fits into shallow ceiling cavities with just 2¼″ depth

Technical Specifications

• Model: FC104‑HC
• Power: 10 W, 8 Ω
• Sensitivity: 94 dB @ 1 W/1 m
• Frequency Response: 150 Hz–17 kHz
• Dispersion: 135° (–6 dB @ 2 kHz octave)
• Magnet: 10 oz ceramic, 10,500 gauss
• Dimensions: 4″ × 2¼″ (10.16 × 5.72 cm)
• Weight: 2.00 lb (0.91 kg)