Speco Technologies SRH20 Weatherproof Projection Horn

Overview

The Speco Technologies SRH20 is a 20-inch weatherproof projection horn engineered for outdoor and exposed-environment audio deployment. Built to withstand harsh weather conditions, the SRH20 delivers clear, projection-focused sound output suitable for security systems, public address installations, and emergency notification applications. The horn's robust construction and weather-sealed design make it a reliable choice for integrators specifying outdoor audio components in permanent or semi-permanent installations.

Key Features

• 20-inch horn projection design — optimized acoustic coverage for outdoor spaces and large open areas
• Weatherproof construction — sealed housing withstands rain, humidity, and environmental exposure without degradation
• Durable outdoor-rated materials — corrosion-resistant finish suitable for coastal, industrial, and high-moisture environments
• Direct-mount installation — straightforward pole, wall, or structural attachment for quick field deployment
• Neutral frequency response — balanced audio output across speech and alert tone ranges
• High-SPL output capability — sufficient acoustic pressure for distant listener coverage and emergency notification scenarios

Deployment Environment

The SRH20 is classified for outdoor and weatherproof applications. Typical deployment scenarios include perimeter security announcements, emergency evacuation alerts, facility-wide PA coverage, and outdoor warning systems. The horn's weather-sealed design permits year-round operation in rain, snow, and temperature-variable climates without protective enclosure. Installation on poles, rooflines, or wall surfaces is straightforward; integrators should plan for standard audio cable runs and power delivery from on-site amplifiers or PA controllers.

Integration & Compatibility

The SRH20 connects via standard audio input terminals compatible with commercial-grade amplifiers, mixers, and PA systems. No proprietary connectors or drivers are required. The horn integrates into both analog and digital audio chains, making it suitable for retrofit applications and new system builds. When paired with managed amplifier output stages, the SRH20 supports remote audio activation via relay control or networked PA systems. Consult your amplifier specifications for impedance matching and power requirements to ensure proper audio level and output linearity.

Physical Specifications

The SRH20's compact footprint and direct-mount design simplify structural planning. Its weatherproof enclosure is engineered to shed water and resist UV degradation over extended outdoor service life. The horn's projection angle and acoustic characteristics are optimized for horizontal mounting on poles or vertical surfaces, delivering even coverage across typical security perimeter or facility courtyard dimensions.

James Everett

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

I've specified the Speco SRH20 on several outdoor security and facility notification projects. This 20-inch weatherproof horn is purpose-built for environments where standard indoor speakers fail. The robust sealed design means you're not replacing corroded or water-damaged units every season—a real cost win on long-term projects.

Technical Highlights:

• Weatherproof durability: The SRH20 handles rain, humidity, and temperature swings without enclosure, eliminating outdoor speaker cabinet failures common with consumer-grade gear.
• Direct audio integration: Simple terminal connections work with any commercial amplifier; no proprietary modules or licensing required.
• Projection horn acoustic design: The 20-inch form factor focuses sound output effectively across large outdoor areas—perimeter announcements and emergency alerts reach listeners at distance without overdriving the amplifier.

Deployment Considerations:

• Pair the SRH20 with a managed amplifier output stage rated for outdoor duty; verify impedance matching and power capacity before field installation.
• Mount on rigid poles or structural members; secure all cable runs to prevent wind-induced abrasion and water pooling around connectors.
• In high-wind environments (coastal, elevated sites), use corrosion-resistant fasteners and consider cable strain relief to ensure long service life.

The SRH20 is a straightforward, proven horn for outdoor PA and security audio. Spec it when you need weatherproof projection without the complexity of networked systems. Integrators appreciate the reliability and simplicity of this product.