The Digi-Wave Advanced Comms Module (ACM) Transceiver is the ultimate solution for portable intercom in small to medium broadcasts, theater productions, and live events. Offering up to 16 hours of battery life per charge, it supports uninterrupted, all-day use, making it the perfect choice for dynamic, fast-paced environments.
Enjoy unparalleled mobility and flexibility – Digi-Wave ACM is a fully portable, full-duplex wireless intercom solution. Its unique Flexible Access Point feature allows users to stay connected with their team without being tethered to a base station. This enables any centralized device within the system to act as the access point – maximizing the overall range of the system and enabling flexibility.
Easily initiate All-Call intercom from designated devices with a push of a button. This is great for stage managers, broadcast directors, and event coordinators to notify crew of things such as stage cues, the end of the commercial break, or emergency announcements. Need multiple people to initiate All-Call function? Digi-Wave ACM allows control units allow users to choose which units have all-call capability.
Designed with efficiency and ease of use in mind, the Digi-Wave ACM systems can be divided into up to 4 subgroups, allowing each team to have an individual communication line with just their team i.e. Lights, Camera, Stage, and Security. This setup allows leaders to effortlessly switch between subgroups for targeted communication. Great for large teams that need separate communication lines with smaller groups. Customize these subgroup names by using the prepopulated names or by using any 6-letter custom name.
Flexible programming allows settings to be adjusted online – or offline by designating a separate unit as a control unit. Administrators can conveniently program all system settings offline using the control function, making updates to the system without interrupting active communication.
*Existing Digi-Wave 400 DLTs, with firmware from January 2021 or later, can be updated with the Advanced Comms Module firmware. To upgrade your current DLT 400 to include the Advanced Comms Features, please contact TechBlue.
System Includes
(1) DLT 400-ACM – Digi-Wave ACM Transceiver
The DLT 400 has an internal rechargeable battery. Power Supply Charging Pack is sold separately. Visit the Digi-Wave Power Supply Pack (DW ACC PAC4) product page for more information.
Features
- Fully Mobile, No Base Station. Digi-Wave ACM is a fully portable, full duplex, Two Way Communication System providing users complete flexibility to go where they are needed and remain in communication with their team.
- Flexible Access Point. Unlike most wireless intercom devices in the market which use an access point to connect units, Digi-Wave ACM’s flexible access point (Main Sync feature) enables users to choose any device in the system to act as the digital access point maximizing the overall range of the connected system, and ensuring communication connectivity throughout the production area. Optionally, a unit can be mounted in a fixed location to maximize coverage.
- All Call Function. This function enables one or several leaders to easily communicate with all subgroups.
- Four (4) Subgroups. Creating subgroups enhances flexibility and easily ensures efficient communication management in diverse environments. Depending on the requirements, 2 – 4 subgroups can be created.
- Customized Subgroup Naming. Admins can customize subgroups with up to 6 characters or choose from common subgroups like camera, audio, and stage. This customization helps team members quickly identify their subgroups and navigate communication more smoothly.
- Quick, Seamless Subgroup Switching. One or several leaders can quickly switch between subgroups, ensuring seamless coordination and maximum efficiency.
- Control Function. The new control function empowers administrators to program all system settings offline using a Digi-Wave ACM transmitter. This device enables convenient system updates, allowing administrators to easily manage communication settings.
- Affordable Intercom. All of the core features production teams look for in a professional product intercom systems, plus the reliability and clear audio Digi-Wave is known for at a price that makes it accessible to small and mid-sized organizations.
- All Day Battery Life. All-day use with up to 16 hours of run time on a single charge.
- Private Line Functionality – Allow designated units to initiate private line communications with the lead unit.
How It Works
All Call – Activate All-Call function effortlessly from designated devices with just a press of a button. Activating all call mutes all other devices and allowing stage managers, broadcast directors, and event coordinators to announce stage cues, commercial break endings, or emergencies to all devices at once.
Flexible Access Point – Choose any centralized ACM device to act as a flexible access point to maximize the range of the system.
DLT 400-ACM architectural and engineering specifications
Architectural/Consultant Specs
The transceiver shall be a digital spread-spectrum (DDS), simultaneous full duplex wireless production intercom device. The portable transmitter unit shall be capable of transmitting and receiving audio simultaneously on the 2.4 GHz ISM band. The device shall be capable of transmitting radio signals by rapidly changing the carrier frequency (frequency-hopping) in order to avoid interference and to provide a secure method of communication.
The device shall be able to include up to 1,024 units in a group. Each group shall be possible to divide into up to 4 subgroups, which the Lead unit (and optionally secondary lead units) can switch between. In addition, a Lead unit shall be able to address all sub-groups simultaneously through all-call functionality.
The device shall allow customized naming of the subgroups. Any device in the group shall be capable of being programmed as the Main Sync device, which all other devices connect to. It shall be possible for any device to be programmed to be allowed to initiate a private call with the Lead unit.
The device shall have a talk button to activate the built-in or external microphone and to broadcast the audio signal to other transceivers and receivers with a transmission range of up to 900 ft (274 m). The unit shall employ 87-bit encryption for audio transmission with the ability to add another 128+87-bit encryption layer that requires an encryption pin to be entered on the receiving devices. The device shall have a signal-to-noise ratio of 73dB (A-weighted) and shall have an audio frequency response of 100 Hz – 7.2 kHz.
The device shall provide a 3.5 mm TRRS CTIA headphone jack that accepts a headset microphone or a microphone. The device shall provide a built-in microphone that shall be automatically disabled when the headphone jack is engaged. The device shall have volume control buttons to adjust the headset’s volume. The device shall incorporate further control buttons for setup and operation and a corresponding OLED display that indicates the setup menu, operating mode, channel, time, battery status, and signal strength. and 100 Hz – 11.5 kHz in all other modes. The device shall have a THC (total harmonic distortion) of less than 0.1% @ 1 kHz. The device shall operate for up to 16 hours with a built-in rechargeable Lithium-polymer battery and shall have a battery-saving sleep mode. The approximate battery charging time shall be 5 hours. The device shall provide a USB-C port for use with a USB charger and two charging contacts for use with a multi-slot charger. The device shall have the option of being lanyard-worn or with a belt clip case.
The Williams AV Digi-Wave ACM (DW 400-ACM) is specified.
DLT 400-ACM
| Dimensions |
2.60”W x 4.22”H x 0.50”D
(66 mm x 107.3 mm x 12.6 mm) |
| Weight |
3.3 oz (94 g) including battery |
| Color |
Black/Silver (Front/Back) |
| Case Material |
Black ABS plastic |
| Battery type |
Lithium Polymer with smart charge built into transceiver; 1800 mAH |
| Battery life |
Up to 16 hrs talk time per charge@ 1ch Tx and 1ch Rx |
| Power Save |
Auto Sleep Mode after 5 minutes of no RF signal from compatible devices |
| Charge time |
5 hrs. approx. |
| System Voltages |
OLED 14VDC; RF 5VDC; Logic 3.3 VDC |
| Operating frequencies |
2.4 GHz (ISM band); 2402 – 2476 MHz FHSS |
Audio Frequency response
(-3dB Level) |
INT24, Q&A INTP, ADV. Comms, Intercom and Court Mode: 100 – 7,200 Hz
Other Modes: 100 – 11,500 Hz |
| SNR |
73 dB (A-weighted, default Rx volume with mic input ) |
| THD |
0.1 % (Default Volume, 1kHz) |
| Microphone input |
Internal microphone (disabled when MIC jack engaged) and 3.5 mm phone jack (sleeve) with electret microphone bias, adjustable gain with 63dB range. |
| Line Input |
USB-C, Adjustable level |
| Headphone Output |
3.5 mm TRRS headphone jack; 25 mW, R 32 ohms |
| Audio Output |
Headphone: Max SSPL 90 111.8dB (EAR 013), 116.8dB (EAR 041)
Line: USB-C, Adjustable level |
| Range |
Up to 900 ft (274 m) (depending upon environmental conditions) |
| Modulation |
FSK |
| RF Output |
19 dBm Typical |
| Security |
87-bit encryption (300 Series Compatible), 87+128 bit Encryption, Encryption PIN, Lock for settings |
| Side tone |
-6 dB below volume, tone variation (Off, Low and High settings available) |
| Indicators |
OLED |
| LEDs |
Red LED around Talk button when enabled; Bi-color, changing green and red LED at top |
| Charging Connectors |
USB-C; Two contacts for use with CHG 412 |
| Compatible Receiver |
DLR 400 RCH (with firmware 1.3.0 or greater) |
| Operating Temperature Range |
14º to 113ºF (-10º to 45ºC) |
| Approvals |
FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty |
5 years on parts and labor with product registration; 2 years standard without registration. Internal batteries are covered for 1 year and accessories for 90 days, regardless of registration. Visit the Warranty and Registration page for details. |
Warranty
5 years with registration - 2 years standard (90 days for accessories)
Production/Broadcast – All Call
Theater – All Call
Event Coordination – All Call
What is the DLT 400-ACM?
The DLT 400-ACM is a fully portable, two-way digital intercom transceiver for broadcast, theater and live events. It gives production and event teams the features they need from a production intercom, including All Call, subgroups and private lines, without a base station or wired beltpacks.
What does “ACM” stand for?
ACM stands for Advanced Comms Module. It’s a set of intercom features built on the Digi-Wave 400 transceiver platform.
How is it different from the standard DLT 400?
The hardware is the same, but the ACM adds production intercom features: Flexible Access Point, All Call, up to four named subgroups, private lines and offline programming. The standard DLT 400 is built for tours, interpretation and assistive listening. The ACM is built for crew communication.
Does it need a base station?
No. The ACM is full duplex and fully mobile. Any unit can act as the access point (called Main Sync), so the team stays connected without being tethered to a base station. You can also choose which unit serves as the access point to extend the system’s overall range.
What is All Call?
All Call lets one or more designated leaders talk to every subgroup at once. You choose which units have All Call ability.
How do subgroups work?
You can split the team into 2 to 4 subgroups, so camera, audio and stage crews each have their own conversation. Name each subgroup with up to 6 characters, or pick from common presets like camera, audio and stage. Leaders can switch between subgroups quickly.
What is private line?
Private line lets designated units start a one-on-one conversation with the lead unit, apart from the rest of the group.
Can I program the system ahead of time?
Yes. Using an ACM transceiver, you can program all system settings offline before the event, so every unit is ready to go when the crew arrives.
How many units can be in one system?
A single group can include up to 1,024 units.
What comes in the box?
One DLT 400-ACM transceiver with a built-in rechargeable battery. A charger is not included. Order the DW ACC PAC4 single-unit power supply, or a CHG 404 (4-bay) or CHG 412 (12-bay) charger to charge several units at once.
How long does the battery last?
The built-in 1800 mAh lithium-polymer battery runs up to 16 hours per charge, enough for a full show day. A full charge takes about 5 hours.
What receivers does it work with?
The DLT 400-ACM works with DLR 400 RCH rechargeable receivers running firmware 1.3.0 or later. Use them for crew members who only need to listen. DLR 400 ALK receivers are not listed as compatible.
Can I upgrade my existing DLT 400 to ACM?
Yes. Any DLT 400 with firmware from January 2021 or later can be upgraded to ACM firmware. Contact Williams AV Tech Services for the upgrade.
What is the range?
Up to 900 ft (274 m). Walls, crowds and other 2.4 GHz devices can shorten it.
Is the communication secure?
Yes. The ACM uses digital frequency-hopping spread spectrum in the 2.4 GHz band, with 87-bit and 128-bit encryption, an encryption PIN and a settings lock, so outsiders with other equipment can’t listen in and no one can change your settings.
Does it need a license or frequency coordination?
No. It runs in the license-free 2.4 GHz ISM band. That means no frequency coordination at venues and no conflicts with your wireless mics. It is approved for FCC, Industry Canada, CE, RCM, ANATEL, KC and Giteki markets.
What headset or microphone can I use?
The ACM has a built-in mic, a 3.5 mm mic jack with electret bias and 63 dB of adjustable gain, and a 3.5 mm headphone jack. The MIC 144 headset microphone is a good match for crew use.
Can I hear myself while I talk?
Yes. Side tone plays your own voice in your headset at 6 dB below the listening volume. You can set it to Off, Low or High.
Can I connect it to a sound system or recorder?
Yes. The ACM has a USB-C line input and output, both with adjustable levels. You can feed in program audio or send the intercom feed out to a recorder.
What accessories are available?
CCS 063 BK silicone skin with belt clip for hands-free wear, CCS 061 silicone skin with lanyard, and the MIC 144 headset microphone.
Where can I find the manual and setup guides?
The product page includes the Digi-Wave ACM spec sheet, the Digi-Wave 400 user manual, a Quick Setup Guide, a compatibility chart, a security features guide and a product overview video. Design and consultant specs are also available for download.
How big and heavy is it?
It measures 2.60″ W x 4.22″ H x 0.50″ D (66 x 107.3 x 12.6 mm) and weighs 3.3 oz (94 g) with the battery. It works in temperatures from 14° to 113°F (−10° to 45°C).
What’s the warranty?
The DLT 400-ACM is covered for 5 years on parts and labor if you register the product (2 years if you don’t). The internal battery is covered for 1 year and accessories for 90 days. Full terms are at williamsav.com/support/warranty-product-registration.
How do I get pricing?
Click “Request More Info” on the product page and the Williams AV team will follow up with a quote.
