Viking Electronics 300-IP-EWP SIP / Multicast Paging Horn with Enhanced Weather Protection

The Viking Electronics 300-IP-EWP is a network-connected paging horn built for outdoor and industrial environments where a standard IP speaker simply won't survive the conditions. It combines a 6 Watt Class D amplifier, a large 10-inch diameter horn rated at 113 dB SPL at 1 meter, and Viking's Enhanced Weather Protection (EWP) package — making it one of the more deployment-ready SIP paging devices for loading docks, parking structures, manufacturing floors, and any site where moisture, dust, and temperature swings are a daily reality. The 300-IP-EWP (often searched as 300 IP EWP) ships ready for PoE-powered installation with fully adjustable mounting hardware included.

Key Features

• 113 dB SPL at 1 Meter — High-Output Horn Driver: 113 dB is genuinely loud — loud enough to cut through active machinery noise on a factory floor or be heard clearly across a large open parking lot. For reference, most wall-mount IP speakers top out around 90–95 dB. If coverage zone is wide or ambient noise is high, this output level means you can cover the area with fewer endpoints rather than stacking additional devices.
• 6 Watt Class D Amplifier: Class D amplification runs at significantly higher efficiency than linear Class A/B designs — less heat generated at the amplifier stage, which matters in sealed or semi-sealed enclosures where thermal buildup can shorten component life. Six watts is matched well to the 10-inch horn driver, delivering clean output without over-driving the transducer at sustained page volume.
• 10-Inch Horn Diameter: The large horn geometry concentrates and projects sound over distance more effectively than compact horn designs. For long-throw coverage — think warehouse aisles, outdoor assembly yards, or corridor-style facilities — the 10-inch driver gives you meaningful range without cranking amplifier gain to compensate for a small horn aperture.
• SIP Protocol Support: Native SIP compatibility means the 300-IP-EWP integrates directly into VoIP paging systems and standard SIP PBX platforms (Cisco, Avaya, FreePBX, 3CX, and others) without requiring proprietary gateways or converters. A SIP extension is assigned just like any IP phone — straightforward for IT and telecom teams already managing a SIP infrastructure.
• Multicast Paging Support: Multicast capability lets the horn receive simultaneous broadcast pages to a defined group address without requiring a separate SIP call leg per device. In facilities with dozens of paging endpoints, multicast dramatically reduces call server load and page latency compared to unicast-to-each approaches. This is the right architecture for large-scale PA systems.
• Enhanced Weather Protection (EWP) — Foam Rubber Gaskets and Boots: The EWP designation isn't a marketing label — it describes specific physical construction: foam rubber gaskets and boots at cable entry points, sealed connections throughout, gel-filled butt connectors on field-spliced wiring, and urethane or thermal plastic potting on vulnerable circuit areas. This combination keeps moisture out of the electronics even under sustained rain exposure or high-pressure wash-down conditions common in food processing or loading dock environments. If your install is truly exposed — not just 'covered but outdoors' — the EWP model is the correct choice over the base 300-IP.
• Fully Adjustable Mounting Hardware Included: The included adjustable mounting bracket lets you dial in horn aim after installation — useful in facilities where coverage zones shift, or where precise aim toward a target area (a staging zone, a gate, a dock door) matters more than a fixed-angle mount. No separate bracket sourcing required out of the box.

Integration & Compatibility

The 300-IP-EWP connects to any SIP-compatible IP phone system or VoIP paging controller. SIP registration is handled like a standard endpoint — assign an extension, configure audio codecs, and the horn appears as a callable device on your network. For facilities running existing IP paging infrastructure, the multicast group configuration follows standard IGMP practices; no specialized multicast hardware is required on a managed switch with IGMP snooping enabled.

Viking Electronics produces a broad range of SIP-based entry phones, intercoms, and paging accessories — explore the full Viking Electronics catalog for compatible entry panels and paging controllers that pair with the 300-IP-EWP in a complete facility-wide paging solution. For facilities also deploying access control at entry points, consider pairing the paging horn with a network intercom system on the same SIP infrastructure.

Power delivery: the 300-IP-EWP is designed for PoE-powered installation, which eliminates the need to run separate 120V circuits to horn locations — a real labor and conduit cost savings in retrofit installations where pulling power to each horn location would otherwise require significant electrical work. Confirm your PoE switch budget covers the device's draw before finalizing port assignments.

Frequently Asked Questions

Q: What is the difference between the Viking 300-IP and the 300-IP-EWP?

A: The 300-IP-EWP adds Enhanced Weather Protection over the base 300-IP model. EWP includes foam rubber gaskets and boots at cable entries, sealed connections, gel-filled butt connectors, and urethane or thermal plastic potting on circuit areas. The audio and amplifier specs — 6W Class D, 113 dB SPL, 10-inch horn — are identical on both models. Choose the EWP version for genuinely exposed outdoor installations or wash-down environments.

Q: Does the 300-IP-EWP support multicast paging?

A: Yes. The 300-IP-EWP supports both SIP unicast calls and IP multicast paging. Multicast is the preferred approach for large facilities with many paging zones — it lets you page all horns in a group simultaneously without creating individual SIP call legs to each device, which reduces load on the call server and eliminates page-start latency stagger.

Q: What amplifier technology does the 300-IP-EWP use and why does it matter?

A: The 300-IP-EWP uses a 6 Watt Class D amplifier. Class D runs at high efficiency, generating significantly less heat than Class A/B designs. In a weatherproofed enclosure where heat dissipation is limited, this reduces thermal stress on components — a reliability factor in continuous-duty paging applications.

Q: How loud is 113 dB SPL and is it sufficient for industrial environments?

A: 113 dB SPL measured at 1 meter is very high output for an IP paging device. Typical factory ambient noise runs 85–95 dB. At distance (sound drops roughly 6 dB per doubling of distance), a 113 dB source at 1 meter is still 89 dB at 16 meters and approximately 83 dB at 32 meters. For most manufacturing floors and outdoor yard applications, a single horn provides sufficient coverage for a zone — reducing total device count per installation.

Q: Can the 300-IP-EWP be aimed after installation?

A: Yes. The included mounting hardware is fully adjustable, allowing horn aim to be set or changed after the unit is physically mounted. This is useful in dynamic facilities where coverage zone targets shift over time.

Q: Is the 300-IP-EWP compatible with standard SIP PBX systems like FreePBX or 3CX?

A: The 300-IP-EWP uses standard SIP protocol, so it registers to any SIP-compliant call server. Compatibility with specific platforms (FreePBX, 3CX, Cisco CUCM, Avaya, etc.) depends on standard SIP extension provisioning — no proprietary configuration is required on the PBX side.

Karl Wilson

The 300-IP-EWP is the horn I recommend when a customer asks for an outdoor paging endpoint and the install site is anything beyond a covered soffit. That 113 dB SPL rating at 1 meter isn't a peak spec — it's the sustained output the 6W Class D amp can deliver continuously into the 10-inch driver. For a facility paging application, that headroom matters more than peak SPL that the amplifier can only hit for a second before thermal limiting kicks in.

Technical Highlights:

• 113 dB SPL / 6W Class D: The combination of a high-efficiency Class D stage and a large-aperture 10-inch horn means you're converting available wattage into acoustic output rather than heat — critical for a sealed EWP enclosure where there's no airflow to manage amplifier temperature.
• EWP Construction — Gel-Filled Butt Connectors + Potted Circuits: The EWP package addresses the two most common field failure modes for outdoor IP audio: water ingress at cable terminations and moisture migration into PCB areas. Gel-filled connectors on butt splices and urethane/thermal plastic potting on circuits close both paths. This is construction-level weatherproofing, not just a gasketed enclosure lid.
• SIP + Multicast Dual-Mode: Having both SIP registration and multicast receive in one device means you can architect the paging system correctly from day one — multicast for simultaneous all-zone pages, SIP call for directed single-zone announcements — without deploying two different hardware types.

Deployment Considerations:

• Confirm IGMP snooping is enabled on the managed switch serving the paging VLAN before commissioning multicast — without it, multicast traffic floods all switch ports and can saturate links on switches with heavy traffic loads.
• The 300-IP-EWP is specified for PoE power delivery; verify the switch port's PoE wattage allocation before connecting — underpowered PoE ports will cause the unit to boot-loop or deliver reduced audio output at volume.

This horn is the right pick for manufacturing facilities, covered outdoor assembly yards, and transit/logistics hubs where a standard IP ceiling speaker would fail within a season — and where page intelligibility at range is a safety or operations requirement, not just a convenience.