Paging Horn Speaker – SC-651

The TOA SC‑651 is a powerful, high‑intelligibility paging horn speaker designed for voice announcements and tone‑signaling distribution in both indoor and outdoor environments. With its rugged aluminum construction, polyimide diaphragm, and weatherproof design, the SC‑651 is engineered for long‑term reliability in demanding public‑address applications such as industrial plants, warehouses, transportation facilities, and large open areas.

Key Features

• High Durability Polyimide Diaphragm: Ensures stable performance even during continuous 50 W output.
• High-Intelligibility Paging: Optimized for voice clarity and wide‑area tone signaling.
• Weather-Resistant: Fully compliant with IP65 standards for dust and water protection.
• Shock-Resistant Horn: Aluminum oval flare provides structural strength and consistent acoustic performance.
• Wide Temperature Range: Operates reliably from −20°C to +55°C (−4°F to 131°F).
• Easy Installation: Steel mounting brackets support wall, pole, or ceiling mounting with flexible aiming.

Specifications

Electrical

• Rated Input: 50 W (30 W for mobile-mounted use)
• Rated Impedance: 16 Ω
• Sensitivity: 109 dB (1 W, 1 m)
• Frequency Response: 250 Hz – 6 kHz

Connections

• Polarity: Hot = Black, Common = White
• Speaker Cable: PVC cabtyre cable, 6 mm diameter

Environmental

• Dust/Water Protection: IP65
• Operating Temperature: −20°C to +55°C (−4°F to 131°F), free from condensation

Construction

• Horn Flare: Aluminum, off‑white, powder coated
• Reflector Horn: ABS resin, off‑white
• Bracket Holder: Aluminum, gray, powder coated
• Bracket: Steel, gray, powder coated
• Rear Cover: ABS resin, gray
• Screws & Bolts: Stainless steel

Dimensions & Weight

• Dimensions: 430 (W) × 297.5 (H) × 327 (D) mm (16.93" × 11.71" × 12.87")
• Weight: 3.4 kg (7.5 lb)

Optional Accessories

• YS‑151S Swivel Bracket: Optional bracket for enhanced directional aiming.