Amron 2840R-02 Four-Diver Rack Mount Communicator with DSP3 Helium Speech Unscrambler
Description
Our engineering team has leveraged cutting-edge digital technology to create the most intelligible and reliable diver communicators in the industry. Amron’s commitment to quality ensures that the 2840R series stands as the most versatile and durable communicator available worldwide.
The AMCOM™ IV 2840R-02 Four-Diver Rack Mount Communicator with DSP3 Helium Speech Unscrambler (HSU) provides reliable hard-wired communications for up to four divers, supporting both air and mixed-gas diving.
This communicator allows individual control of channels and volume for each diver and the tender, ensuring customised uplink and downlink paths for various equipment setups and personal comfort preferences.
The HSU module integrates the latest in digital technology, featuring a state-of-the-art digital signal processor that converts raw helium speech into clear, intelligible voice. The upgraded Treble Boost offers precise control over the high-frequency gain of the diver's microphone. Additionally, Depth Control can be fine-tuned using a multi-turn potentiometer, enhancing speech quality for the tender. The Noise Reduction Filter (NRF) uses an advanced algorithm to filter background noise, preserving the clarity of the diver's voice.
This advanced HSU design is the first of its kind to combine both frequency and time-domain technologies for real-time audio processing. The result is a highly efficient digital solution that not only clarifies helium-distorted speech but also enhances audio with advanced treble boost and noise reduction features.
The latest version of the AMCOM™ IV Rack Mount Communicator retains its user-friendly interface and high-quality sound while incorporating several key digital improvements:
High Audio Fidelity
Extended Battery Life
Flexible Gain Settings
Ultra-Low Electromagnetic Interference (EMI)
Audio In/Out Connections
These enhancements continue to make this communicator and HSU combination one of the most powerful and sought-after on the market today.
Helium Speech Unscrambler (HSU):
Utilises a state-of-the-art digital signal processor to transform helium-distorted speech into clear, intelligible audio.
Features fine-tuned depth control via a multi-turn potentiometer for superior speech quality.
Includes advanced treble boost for optimal frequency enhancement.
Noise Reduction Filter (NRF):
Employs complex algorithms to reduce background noise by up to 17 dB without affecting speech clarity.
Integrates both frequency and time-domain technologies for real-time audio processing.
Customisable Communication:
Separate channels and volume controls for each diver and the tender.
Compatible with 4-wire (full duplex) and 2-wire (push-to-talk) modes, or a combination for flexibility.
Automatically adjusts for dynamic and pre-amplified microphones.
Enhanced Audio Performance:
Crystal-clear speech through ultra-low noise circuits and automatic gain adjustment, increasing bandwidth by 47%.
Noise suppression circuitry ensures distortion-free audio.
Extended Battery Life:
Features a Class-D digital audio power amplifier for reduced heat and extended operation—up to 32% longer battery life.
Ultra-Low Electromagnetic Interference (EMI):
Innovative spread-spectrum and de-phase control techniques for seamless integration with diving systems.
Convenient Audio Connections:
Equipped with RCA audio in/out ports for line-level signal exchange.
Supports redundancy or user expansion by interconnecting two units.
Input Impedance: 250 Ohms
Frequency Response: 300–10,000 Hz
Output Power: 10 Watts RMS @ 4 Ohms
Power Supply Voltage: 12 VDC (9–18 VDC range)
AC Voltage Range: 90–264 VAC, 50–60 Hz
Weight: 19.5 lbs. (8.8 kg)
Dimensions: 7 in. H x 19 in. W x 12.5 in. D
Included Components:
Amron 2405-28 Push-to-Talk Microphone
12 VDC Rechargeable Battery
MS Connector and Cable Clamp
Power Cord
User Manual
Optional Accessories:
Deluxe Headset with Boom Mic (2401-28)
Standard Headset with Boom Mic (2460-28)
Remote Walk-and-Talk (4-wire mode: 2822-28 / 2-wire mode: 2821-28)
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