TOA ER-604W 6W Compact Shoulder Megaphone with Whistle Signal

Product Overview

The TOA ER-604W is a compact 6-watt shoulder-type megaphone designed for portable public address applications in government, emergency response, and public safety environments. The shoulder-carry design keeps the megaphone stable and hands-free during extended use, while the integrated whistle signal provides an audible alert tone for crowd control and emergency attention. An auxiliary input accepts external audio sources for playback through the megaphone speaker, and a built-in rechargeable battery system delivers up to 10 hours of continuous operation per charge.

Product Description

The TOA ER-604W shoulder megaphone provides mobile public address capability for situations where a fixed PA system is impractical — outdoor events, emergency response deployments, crowd management, and field operations. The 6W output delivers effective SPL for outdoor voice projection at distances appropriate for crowd management and emergency instruction, where clear intelligibility at range is critical. The shoulder strap and ergonomic form factor distribute weight comfortably for extended carry during long-duration field deployments, allowing the operator to maintain situational awareness while addressing crowds or directing personnel. The whistle signal function provides a high-attention audio cue without requiring a separate whistle or signaling device, simplifying equipment for field operators. An auxiliary (AUX) input allows the ER-604W to amplify pre-recorded messages, alarm tones, or siren signals from an external playback device, expanding its application from basic voice PA to multi-function public address. The built-in rechargeable battery eliminates the need for disposable batteries in regular use, reducing operating cost for organizations with frequent field deployment requirements. Charging and operation from a vehicle power supply is supported for extended field operations. The ER-604W is part of TOA's ER-series portable megaphone lineup; view the full range of TOA portable PA and megaphone products at creationnetworks.net.

Key Features

• 6W Output Power — Delivers effective outdoor SPL for crowd addressing, emergency instruction, and public safety announcements at range.
• Shoulder-Carry Design — Ergonomic shoulder strap distributes weight for hands-free extended carry during field operations and crowd management.
• Integrated Whistle Signal — Built-in whistle tone provides an audible attention cue without requiring a separate signaling device.
• AUX Input — Accepts external audio sources for amplified playback of pre-recorded messages, alarm tones, or siren signals through the megaphone.
• 10-Hour Battery Life — Rechargeable battery provides up to 10 hours of continuous operation for full-day field deployments.
• Rechargeable Battery System — Integrated rechargeable battery reduces field operating cost compared to disposable battery alternatives.

Typical Applications

• Government space
• Multi-purpose room
• Outdoor public address
• Emergency response
• Crowd management

Technical Specifications

Frequently Asked Questions

What is the operating range of the ER-604W?
Effective voice projection range depends on ambient noise levels and environmental conditions. For field guidance on the ER-604W's coverage at specific SPL requirements, contact your TOA dealer or refer to the product datasheet.

Can the ER-604W play back pre-recorded messages?
Yes — the AUX input allows connection of an external audio playback device to amplify pre-recorded announcements, alarm tones, or siren signals through the megaphone speaker.

How long does the ER-604W battery last?
The built-in rechargeable battery provides approximately 10 hours of continuous operation per charge, sufficient for full-day field deployments.

Is the whistle signal adjustable?
The whistle signal is a fixed-tone attention cue activated via the designated control. It is designed for field use where a consistent audible alert is required.

Can the ER-604W be charged from a vehicle?
Vehicle power supply charging is supported for extended field operations. Refer to TOA's product documentation for specific vehicle charging accessory compatibility.