Williams AV DWS COM 6 400 – 6-User Digi-Wave Wireless Intercom is backordered and will ship as soon as it is back in stock.
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Product Overview
The Williams AV DWS COM 6 400 is a six-user Digi-Wave 400 wireless intercom system for production crews, training programs, and commercial facilities that need license-free, full-duplex team communication. All six DLT 400 transceivers can transmit simultaneously, so the whole team converses naturally without push-to-talk turn-taking. The kit ships complete with headset microphones, charging accessories, identification skins, and a hard-sided system carry case for transport between venues.
Product Description
The DWS COM 6 400 combines six DLT 400 transceivers with six MIC 144 headset microphones, six DW ACC PAC4 charging accessory packs, a CCS 056 DW 11 copolymer carry case, and color-coded silicone skins (one grey, five black) for quick role identification. The DLT 400 is a digital spread-spectrum (DSS) device in the 2.4 GHz ISM band whose frequency-hopping algorithm (2402–2476 MHz FHSS) avoids interference from venue Wi-Fi and other RF sources, while 87-bit plus 128-bit encryption with PIN protection keeps communication confidential in courtrooms, government spaces, and corporate environments. The platform supports up to six simultaneous talkers — exactly the capacity of this kit — making it a cost-effective alternative to licensed two-way radio intercom systems with no FCC licensing or frequency coordination required. Each transceiver runs up to 16 hours of talk time per charge and covers up to 900 feet depending on conditions. The same six units can be reconfigured for language interpretation (one floor language plus up to 14 interpreted languages), guided tours with or without audience participation, or hearing assistance, so one investment serves multiple programs. Listen-only positions are easy to add with DLR 400 RCH receivers; for noisier sites, consider the DWS COM 6 PRO 400, which upgrades to MIC 157 headset microphones and a heavy-duty case.
How It Works

System includes: (6) DLT 400 transceivers, (6) MIC 144 headset microphones, (6) DW ACC PAC4, (1) CCS 056 DW 11 system carry case, (1) CCS 061 GR grey silicone skin, (5) CCS 061 BK black silicone skins.
Key Features
- Six-User Simultaneous Full Duplex — All six positions can transmit at once, giving crews continuous open-mic communication without push-to-talk delays.
- License-Free 2.4 GHz DSS Operation — Frequency-hopping spread spectrum avoids interference and requires no FCC license or frequency coordination at any site.
- Encrypted, PIN-Protected Audio — 87-bit plus 128-bit encryption secures conversations in legal, government, and corporate facilities.
- Up to 16 Hours of Talk Time — Internal 1800 mAh lithium polymer batteries with smart charging support a full event day per five-hour charge.
- 900-Foot Operating Range — Coverage up to 274 m (environment dependent) spans large venues, backstage zones, and multi-room facilities.
- Multi-Mode Platform — One system handles intercom, interpretation with up to 14 language channels, guided tours, and hearing assistance.
- Rugged Transit Case — The CCS 056 DW 11 copolymer case is rated from -40ºF to 160ºF and protects the full kit between deployments.
- Expandable and Backward Compatible — Add DLR 400 receivers for listeners, and interoperate with Digi-Wave 300 Series gear via 87-bit encryption mode.
Typical Applications
- Broadcast studio and live production crews
- Auditorium and house of worship technical teams
- Government space and courtroom communication
- Training room and multi-purpose room programs
- Commercial meeting space event support
Technical Specifications
| Transceiver (DLT 400) Dimensions | 4.22"W x 2.60"H x 0.50"D (107.3 mm x 66 mm x 12.6 mm) |
| Weight | 3.3 oz (94 g) including battery |
| Case Material | Black ABS plastic |
| Battery Type | Lithium polymer with built-in smart charge; 1800 mAh |
| Battery Life | Up to 16 hrs talk time per charge @ 1ch Tx and 1ch Rx |
| Charge Time | Approx. 5 hours |
| Operating Frequencies | 2.4 GHz (ISM band); 2402–2476 MHz FHSS |
| Audio Frequency Response (-3 dB) | Intercom 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, 1 kHz) |
| Microphone Input | Internal mic (disabled when MIC jack engaged); 3.5 mm jack with electret bias, 63 dB adjustable gain range |
| Line Input/Output | USB-C, adjustable level |
| Headphone Output | 3.5 mm TRRS jack; 25 mW @ 32 ohms |
| Range | Up to 900 ft (274 m), depending on environmental conditions |
| Modulation | FSK |
| RF Output | 19 dBm typical |
| Security | 87-bit encryption (300 Series compatible), 87+128-bit encryption, encryption PIN, settings lock |
| Charging Connectors | USB-C; two contacts for CHG 412 drop-in charger |
| Compatible Receivers | DLR 400 RCH, DLR 400 ALK; DLT 300 and DLR 360 with some limitations |
| Operating Temperature | 14º to 113ºF (-10º to 45ºC) |
| Carry Case (CCS 056 DW 11) Exterior | 15.7" W x 19.7" L x 7.2" H (40 x 50 x 18 cm); copolymer; -40ºF to 160ºF |
| Approvals | FCC, Industry Canada, CE, RoHS 3, WEEE, RCM, ANATEL, KC, Giteki |
| Warranty | 2 years against component failure and manufacturing defects; 6 months on internal battery |
Frequently Asked Questions
How many users can talk simultaneously on the DWS COM 6 400?
Up to six — the full capacity of this kit. Every team member has an open, full-duplex microphone, so communication flows like a normal conversation rather than push-to-talk radio traffic.
Does the system need an FCC license or frequency coordination?
No. The Digi-Wave 400 operates in the license-free 2.4 GHz ISM band using frequency-hopping spread spectrum, eliminating licensing costs and coordination at every venue.
What is the difference between this and the DWS COM 6 PRO 400?
The standard COM 6 400 includes MIC 144 headset microphones and the CCS 056 DW 11 carry case. The PRO version substitutes MIC 157 headset microphones for high-noise environments and a CCS 042 heavy-duty case.
Can I add more users or listen-only receivers later?
Yes. Additional DLT 400 transceivers and DLR 400 RCH or ALK receivers join the same encrypted group, so the system scales for interpretation, tours, or larger crews without replacing existing hardware.
How does it integrate with installed AV systems?
Each DLT 400 offers USB-C line-level audio input and output, and the DWD 401 Digi-Wave Connect breakout box converts this to balanced XLR for connection to mixing consoles, DSPs, and room audio systems.
What warranty and support are included?
Williams AV backs the system with a 2-year warranty against component failure and manufacturing defects, plus 6 months on the internal batteries. Creation Networks can assist with configuration and system design questions.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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