Overview
The Shure AD4D-US is a 2-channel wireless receiver housed in a rugged, single-rack unit complete with cable and mounting accessories. Part of the Axient Digital system, it delivers mission-critical signal stability and clear, transparent sound for professional productions that demand flawless execution.
The AD4D-US operates in a single 166-MHz ultrawide bandwidth that encompasses the entire usable UHF range from 470 to 636 MHz. It offers low 2ms latency, XLR/AES3 + AES67/Dante outputs, and 256-bit encryption. The Dante Cue and Dante Browse features enable high-fidelity headphone monitoring from any connected Dante-enabled device.
In standard mode, Axient Digital supports over 120 simultaneous channels. For high channel counts, HD mode allows up to 47 active transmitters per 6 MHz TV channel. The receiver is compatible with AD1, ADX1, ADX1M, AD2, ADX2, and ADX2FD transmitters.
- Wide tuning range up to 184 MHz
- True digital diversity reception per channel for drop-out resistance
- Networked control with Wireless Workbench® software and ShurePlus Channels iOS app
- Front panel headphone jack enables Dante Cue and Dante Browse monitoring
- Configurable Ethernet switch for redundant Dante or AES67 digital output
- AES3 output
- Channel Quality meter displays RF signal-to-noise
- Locking AC connectors
Specifications
| Wireless Technology | Digital UHF |
| Number of RF Channel Frequencies | 6640 |
| Diversity | True Digital Diversity |
| RF Frequency Band | A:470 to 636 MHz |
| RF Bandwidth | 166 MHz |
| Frequency Step Size | 25 kHz |
| Max Operating Range | 328.1' / 100 m |
| Max Transmitters per Band | 120 |
| Latency | 2 to 2.9 ms (Selectable) |
| Modulation | Proprietary |
| Receiver Type | Rackmount |
| Mounting Options | Rackmount (with Included Hardware) |
| Rackmount Size | 1 RU (Full Rack) |
| Antenna | 2 1/2 Wave External, BNC (Rear-Mount) |
| Antenna Bias Voltage | 12 to 13 VDC, 150 mA (per Antenna) |
| Number of Audio Channels | 2 |
| Audio I/O | 2 XLR 3-Pin Male Balanced Output 1 XLR (AES3) 3-Pin Male Output 2 1/4" TRS Female Balanced Output 1 1/4" TRS Female Headphone Output |
| Gain Range | -18 to +42 dB (1 dB Steps) |
| Pad | 30 dB |
| Audio Output Level | XLR Outputs:+18 dBV (Line Level) XLR Outputs:-12 dBV (Mic Level) 1/4" Outputs:+8 dBV |
| Frequency Response | 20 Hz to 20 kHz ±1 dB (Dependent on Mic) |
| Network I/O | 4 xRJ45 (1 Gb/s) |
| Network Protocols | DHCP, Dante, Manual IP |
| Word Clock I/O | 1 BNC Input 1 BNC Through |
| Impedance | XLR Outputs:100 Ohms (Balanced) |
| Approximate RF Sensitivity | -98 dBm |
| Adjacent Channel Isolation | >70 dB |
| Spurious | Rejection: >80 dB |
| Power Requirements | AC Input |
| AC Input Power | 100 to 240 VAC, 50 / 60 Hz at 0.68 A |
| Display & Indicators | 1 xBacklit LCD (AF Level, Battery Status, Channel, Frequency, Menu Navigation, Sync) |
| Housing | Steel |
| Operating Temperature | 0 to 122°F / -18 to 50°C |
| Storage Temperature | -20 to 149°F / -29 to 65°C |
| Dimensions | 19 x 1.7 x 13.1" / 483 x 44 x 333 mm (without Mounting Hardware, Antennas) |
| Weight | 10.1 lb / 4.6 kg (without Antenna) |
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