SHURE ULXD8
Wireless Gooseneck Base Transmitter
The ULXD8 Desktop Base Transmitter delivers uncompromising audio quality and RF performance, and AES-256 encryption for secure transmission.
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The ULXD8 Gooseneck Base Transmitter offers a flexible gooseneck mic form factor that is ideal for use at meetings and events where wired microphones are impractical. Paired with a ULX-D or QLX-D digital receiver, the ULXD8 creates a system with low latency, long transmission range, and high channel count, delivering exceptional performance in large meeting venues where live sound reinforcement is required.
Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation.

FEATURES
- Compatible with ULX-D and QLX-D receivers
- Available in UHF TV band, 900 MHz and 1.2/1.5/1.8 GHz bands
- AES 256-bit encryption for applications for which secure transmission is needed
- Convenient gooseneck form factor for meetings and events where quick setup and teardown is important
- Designed for use with Shure Microflex MX405, MX410 and MX415 gooseneck microphones

- Very short latency (<3 msec)
- Long transmission range (up to 300 feet/91 meters) for reliable performance
- Rechargeable SB900B battery pack provides up to 9 hours of battery life
- Standard AA alkaline batteries are additional power options
- SBC450 (4-bay) and SBC850 (8-bay) Networked Charging Stations for docked charging of 4 or 8 ULXD6 or ULXD8 transmitters
- Compatible with the full line of Shure antennas and distribution components
- Configurable Mute button (Toggle, Push-to-Mute, Push-to-Talk, disabled) and Mute LED behavior
- Adjustable RF power, high-pass filter, and power lock settings
- Available in black or white finishes to complement any meeting room aesthetic

- Applications: A/V Conferencing, Discussion
- SoundSources: Speech
- Environment: Conference Room, Corporate Presentation, Auditorium, Lecture Hall, Live Performance, Place of worship, Rehearsal Space, Stadium, Theater Stage
ULX-D System Specifications
- RF Carrier Frequency Range: 470–932 MHz, varies by region (See Frequency Range and Output Power table)
- Working Range: 100 m ( 330 ft)
Note: Actual range depends on RF signal absorption, reflection and interference.Note: Actual range depends on RF signal absorption, reflection and interference.
- RF Tuning Step Size: 25 kHz, varies by region
- Image Rejection: >70 dB, typical
- RF Sensitivity: −98 dBm at 10-5 BER
- Latency: <2.9 ms
- Audio Dynamic Range (A-weighted, typical, System Gain @ +10):
|
XLR Analog Output
|
>120 dB |
|
Dante Digital Output
|
130 dB |
- Total Harmonic Distortion (−12 dBFS input, System Gain @ +10): <0.1%
- System Audio Polarity: Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of XLR output) and the tip of the 6.35 mm (1/4-inch) output.
- Operating Temperature Range: -18°C (0°F) to 50°C (122°F)
Note: Battery characteristics may limit this range.
- Storage Temperature Range: -29°C (-20°F) to 74°C (165°F)
Note: Battery characteristics may limit this range.
- Receiver Output Level (The following table describes the typical total system gain from the audio input to the receiver outputs):
Receiver Output Gain
|
Output Jack
|
System Gain (gain control = 0dB) |
|---|---|
|
1/4" TRS
|
+18 dB |
|
XLR (line setting)
|
+24 dB |
|
XLR (mic setting)
|
-6 dB* |
*This setting matches a typical wired SM58 audio signal level.
ULXD8
-
Gain Adjustment Range: 0 to 21 dB (in 3 dB steps)
-
Battery Type: Shure SB900B Rechargeable Li-Ion or AA batteries 1.5 V
-
Battery Runtime (@ 10 mW)
|
Shure SB900B
|
Up to 8 hours 30 minutes |
|
AA batteries
|
Up to 8 hours 20 minutes |
The SB900B Shure rechargeable battery uses SBC200, SBC800 and SBC220 chargers.
- Dimensions: 136.94 mm x 78.27 mm x 40.77 mm (5.39 in. x 3.08 in. x 1.60 in.) H x W x D
- Weight: 293 g with AA batteries
- Operating Temperature Range: 0°C (32°F) to 45°C (113°F)
- Housing: Molded Plastic
Audio Input
- Microphone Connector: 6-pin connector for Shure MX405/10/15
- Configuration: Unbalanced
- Impedance: >20 kΩ
RF Output
- Antenna Type: Integrated PIFA
- Impedance: 50 Ω
- Occupied Bandwidth: <200 kHz
- Audio Frequency Response: 50 Hzto17 kHz (varies with capsule)
- Modulation Type: Shure proprietary digital
- Power: 1 mW, 10 mW, 20 mW
