Product Overview
The Shure QLXD24/Beta 87A is a digital wireless handheld microphone system that is part of Shure's QLX-D line of digital wireless systems. Shure QLX-D Digital Wireless delivers defined, streamlined performance with transparent 24-bit digital audio. Combining professional features with simplified setup and operation, QLX-D offers outstanding wireless functionality for demanding live sound events and installations. QLX-D delivers outstanding wireless functionality ideal for mid-size events and installations in businesses, hotels, and government offices with conferencing spaces; schools, houses of worship, and live performance spaces. The QLXD2/Beta 87A is a premium quality supercardioid hand-held electret condenser vocal microphone with exceptionally smooth frequency response and high sound pressure level capability.
Includes
- QLXD2 Handheld Transmitter with BETA87A Cartridge
- QLXD4 Receiver
- Battery Contact Cover
- (2) Half-Wave Antennas
- (2) BNC Cables
- (2) BNC Bulkhead Adapters
- Zipper Bag
- Rackmount Kit
- User Guide
Features
- Includes QLXD4 digital wireless receiver and QLXD2 handheld mic with Beta 87A cartridge
- Transparent 24-bit digital audio captures every performance detail
- Over 120dB of dynamic range eliminates transmitter gain adjustment
- Wide 64MHz tuning bandwidth (region-dependent)
- Up to 17 compatible systems per 6MHz TV channel
System Specifications
- RF Carrier Range: 470–937.5MHz, varies by region
- Working Range: 100 m (328 ft)
- 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: -97 dBm at 10-5 BER
- Latency:< 2.9 ms
- Audio Frequency Response QLXD1: 20 Hz – 20 kHz (+/-1 dB, Note: Dependent on microphone type)
- Audio Dynamic Range (System Gain @ +10): > 120 dB, A-weighted, typical
- 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") output.
- Operating Temperature Range: -18°C (0°F) to 50°C (122°F) (Battery characteristics may limit this range)
- Storage Temperature Range: -29°C (-20°F) to 74°C (165°F) (Battery characteristics may limit this range)
- Networking
- Network Interface: Single Port Ethernet 10/100 Mbps
- Network Addressing Capability: DHCP or Manual IP address
- Maximum Ethernet Cable Length: 328 ft (100 m)
QLXD4 Receiver Specifications
- Dimensions (HxWxD): 1.63" × 7.75" × 5.94" (41mm × 197mm × 151mm)
- Weight: 1.71 lbs (777 g, without antennas)
- Housing: Steel
- Power requirements: 12 V DC @ 0.4 A, supplied by external power supply (tip positive)
- RF Input:
- Spurious Rejection: >80 dB, typical
- Connector Type: BNC
- Impedance: 50 Ohms
- Audio Output:
- Gain Adjustment Range: -18 to +42 dB in 1 dB steps
- Configuration:
- 1/4" (6.35 mm): Impedance balanced (Tip=audio, Ring=no audio, Sleeve=ground)
- XLR: Balanced (1=ground, 2=audio +, 3=audio -)
- Impedance:
- 1/4" (6.35 mm): 100 Ohms (50 Ohms Unbalanced)
- XLR: 100 Ohms
- Full Scale Output:
- 1/4" (6.35 mm): +12 dBV
- XLR: LINE setting = +18 dBV, MIC setting =-12 dBV
- Mic/Line Switch: 30 dB pad
- Phantom Power Protection on both 1/4" (6.35 mm) and XLR
