Hollyland Solidcom SE-4S Wireless 4-Person Noise Cancelling Headset Intercom - Double Ear Version

The Hollyland Solidcom SE-4S Wireless 4-Person Noise Cancelling Headset Intercom (Double-Ear Version) is a full-duplex communication network engineered specifically for small-to-medium production crews operating in demanding, high-volume environments. By replacing traditional single-ear configurations with an over-ear, double-ear design, this variant provides maximum passive physical isolation, keeping teams completely focused on directives without being distracted by ambient noise on set.

Operating on the ubiquitous 2.4 GHz frequency band, this decentralized, hub-free system bundles one Master headset and three Remote headsets that work straight out of the box with zero external base stations or trailing wires.

1. Double-Ear Acoustic Isolation & Dual-Mic ENC

The defining element of this model is its dual-sided architectural layout paired with aggressive digital signal filtering:

• Passive Dual-Ear Barrier: The dual-ear configuration wraps both ears in comfortable, padded cushions. This acts as an immediate physical shield against intense environmental noise, making it the ideal choice for concert stage managers, live motorsport mechanics, and industrial film sets.

• Dual-Mic Environmental Noise Cancellation (ENC): Each headset features a primary vocal microphone and a secondary ambient-sensing capsule. An internal DSP chip computes the difference, actively scrubbing away up to 20 dB of ambient distractions like screaming crowds, wind shear, and booming PA subwoofers.

• Vocal Intelligibility Performance: Boasting a 71 dB Signal-to-Noise Ratio (SNR) and a specialized frequency response of 150 Hz to 7 kHz, the system isolates human speech frequencies so instructions are heard clearly, reducing communication fatigue during marathon production days.

2. Full-Duplex Continuity & Adaptive RF Tuning

• Simultaneous Simultaneous Talk: Moving past old "push-to-talk" walkie-talkies where users must wait their turn, the Solidcom SE supports absolute Full-Duplex tracking. All four users can talk and listen at the same time, ensuring seamless, live-action camera cueing.

• Stable Wireless Range: Delivers a reliable line-of-sight communication radius of up to 350 meters between headsets.

• Auto Frequency Hopping: To withstand signal-congested venues, the headsets continually monitor the local spectrum. If a local router or high-power video transmitter threatens the channel, the system automatically hops to a clean frequency pathway behind the scenes without audio dropouts.

3. Ergonomic, Weather-Resistant Construction

• Lightweight Balance: Despite the double-ear layout, the system maintains a highly optimized structural design, weighing in at approximately 185 grams per headset. This minimizes neck strain during extended live broadcasts or long multi-camera event assignments.

• IPX4 Splash and Moisture Defense: The internal PCB components are treated with a specialized protective coat. This shields the sensitive electronics from sweat, moisture, and sudden outdoor downpours.

• Intuitive Moveable Boom Muting: To instantly mute your channel for a private sidebar, simply flip the microphone boom upwards. It locks with a physical mechanical click at the vertical point. Dropping the boom back down restores your open connection in under a second. A tactile Push-to-Talk (PTT) button is also available on the ear cup if preferred.

4. Long-Run Power Pipelines

• Asymmetric Power Profiles: Powered by removable, hot-swappable HL-BAT770 Lithium-Ion cells, the system matches power usage to network hierarchy. The Master headset delivers up to 10 hours of runtime, while the Remote headsets yield up to 12 hours of continuous use.

• Dual Charging Architecture: The kit arrives with a dedicated multi-slot external charging base that replenishes dead batteries in under 3 hours. For emergency backup power on set, each headset houses an active USB-C port, allowing users to run the system indefinitely via a portable power bank.

• Scalable Fleet Room: This system can be expanded to accommodate an additional remote headset if your production needs grow, supporting a maximum of 5 simultaneous users.

Technical Summary

• User Configuration: 4-Person Network (1x Master Double-Ear Headset, 3x Remote Double-Ear Headsets).

• Wireless Technology: Digital 2.4 GHz (GFSK Modulation / Peer-to-Peer topology).

• Operational Distance Threshold: Up to 350 meters line-of-sight.

• Acoustic Profile: 150 Hz to 7 kHz Frequency Response; 71 dB SNR; Max Input Handling 115 dB SPL.

• Noise Suppression Depth: Dual-Mic ENC reducing more than 20 dB of background noise.

• Environmental Rating: IPX4 Water and Moisture Resistant.

• Power Capacity: 770 mAh Li-ion detachable battery core; 3-hour recharge cycle.

• Box Contents: 1x Master Double-Ear Headset, 3x Remote Double-Ear Headsets, 4x HL-BAT770 Rechargeable Batteries, 1x Multi-Slot Charging Base, 1x USB-A to USB-C Cable, Headset ID Number Stickers, User Manual.

The Hollyland Solidcom SE-4S Double-Ear Version is a powerful, highly specialized tool for crew coordination in loud, chaotic environments. By combining dual-ear physical isolation, advanced environmental noise reduction, and a completely wire-free design, it gives production teams the absolute focus and audio clarity needed to execute complex live events flawlessly.