Digi Wave ACM 12 User Production Intercom System

The Williams AV Digi-Wave ACM 12-User Production Intercom System is a fully portable, simultaneous full-duplex two-way communication platform for production and event teams. Operating in the 2.4 GHz ISM band, it removes the need for a fixed base station and lets crew members remain connected as their positions change. Core coordination tools include All-Call, private-line communication, selectable subgroups and flexible access-point assignment.

Ideal Use Cases

Designed for stage managers, broadcast directors, event coordinators, camera crews, audio teams and stage teams, the system supports roles directly involved in cueing and live production communication. It is particularly relevant to small and mid-sized organizations that need professional intercom functions without being tied to a base station. Teams can organize communication around two to four subgroups, making the system practical for productions with distinct departments or working zones.

Why Choose This Model

The Digi-Wave ACM combines mobility with structured crew control. Leaders can switch quickly between subgroups, communicate with all subgroups or use private-line functionality with designated units. Administrators can give subgroups names of up to six characters or select familiar identifiers such as camera, audio and stage. All-Call can be activated from designated devices with one button, muting other devices so stage cues, commercial-break endings or emergency messages reach the entire team. Battery performance extends to 16 hours of talk time per charge when operating with one transmit and one receive channel, while specified range reaches up to 900 ft (274 m), depending on environmental conditions.

Installation and Integration

No dedicated base station is required. Through the Main Sync feature, any device in the system can serve as the digital access point, giving production teams flexibility when arranging coverage. A unit may also be mounted in a fixed location to maximize coverage. Administrators can program system settings offline using a Digi-Wave ACM transmitter and apply system updates conveniently. The specified compatible receiver is the DLR 400 RCH with firmware 1.3.0 or later. Existing Digi-Wave 400 DLT units with firmware from January 2021 or later can be updated with Advanced Comms Module firmware. Charging connections include USB-C and two contacts for use with the CHG 412. The stated charging platform accommodates 12 units, supplies 5 VDC at 0.5 A per bay and requires approximately five hours for charging.

Performance Highlights

The system operates from 2402 to 2476 MHz using FHSS and FSK modulation, with typical RF output of 19 dBm. Frequency hopping is used to help avoid interference while supporting communication security. In Advanced Comms, Intercom, INT24, Q&A INTP and Court modes, specified audio frequency response is 100 to 7,200 Hz; other modes extend to 11,500 Hz. Rated performance includes a 73 dB A-weighted signal-to-noise ratio at the default receiver volume with microphone input and 0.1 percent THD at the default volume and 1 kHz.

Audio connections include an internal microphone, a 3.5 mm microphone jack with electret bias and 63 dB of adjustable gain, a 3.5 mm TRRS headphone output and adjustable USB-C line input and output. Engaging the microphone jack disables the internal microphone. Side tone is set 6 dB below volume and offers Off, Low and High tone settings. Security options include 87-bit encryption for 300 Series compatibility, 87+128-bit encryption, an encryption PIN and a settings lock.

What Makes It Different

The defining feature is its decentralized access-point design. Instead of requiring a separate access point, Main Sync lets the team select a device already within the system. That flexibility is paired with department-oriented subgroup naming, fast leader switching, system-wide All-Call and designated private lines. An OLED display, a red LED surrounding the enabled Talk button and a bi-color top LED provide operating feedback. Auto Sleep Mode activates after five minutes without an RF signal from compatible devices.

Final Assessment

For mobile production and event teams, the Digi-Wave ACM provides a focused combination of full-duplex communication, crew grouping and system-wide announcement control. Each specified transceiver measures 2.60 inches wide by 4.22 inches high by 0.50 inches deep and weighs 3.3 oz (94 g) with its battery. The operating range is 14 to 113 degrees Fahrenheit (-10 to 45 degrees Celsius). The product carries a two-year warranty against component failure and manufacturing defects, with one-year coverage for the internal battery.