For capturing audio, the QLXD24/B58 Handheld Wireless Microphone System by Shure is a good choice. It can be used for mid-size events and installations in businesses, hotels, government offices, schools, houses of worship, live performance spaces, and more. It features 24-bit digital audio, network control and AES-256 encryption.
The QLXD wireless system is built with switching diversity and automatic channel scan, and has IR sync capabilities to make finding an open frequency quick. Featuring a frequency range of 20 Hz to 20 kHz, it offers more than 60 available channels per frequency band. The handheld also has a backlit LCD display to allow for navigation though the menus and controls. With clearly defined performance, the QLX-D delivers good clean audio and provides professional features for demanding live sound events and installations.
The QLXD24/B58A system includes a QLXD4 receiver, QLXD2 Transmitter with Beta58A capsule, PS23 power supply, two 1/2 wave antennas, two 2′ BNC cables with bulkhead adapters, zipper bag, two AA alkaline batteries, and rackmount hardware.
Key Features
- Interchangeable Beta58A microphone cartridge
- 120 dB dynamic range
- Digital predictive switching diversity receiver to capture the clearest sound
- 64 MHz tuning bandwidth
- Up to 17 compatible systems per 6 MHz TV band, and 22 systems per 8 MHz band
- Easy pairing of transmitters and receivers over IR scan and sync
- Automatic channel scan
- Selectable display mode showing group/channel, frequency, or battery runtime
- Rugged metal construction
Specifications
| System Specifications | |
| RF Carrier Frequency Range | H50: 534-598 MHz |
| Working Range | 328′ (100 m) Note: Actual range depends on RF signal absorption, reflection and interference |
| RF | Tuning Step Size: 25 kHz, varies by region |
| Image Rejection | Greater than 70 dB, typical |
| RF Sensitivity | -97 dBm at 10-5BER |
| Latency | Less than 2.9 ms |
| Audio Frequency Response | QLXD1: 20 Hz – 20 kHz (±1 dB) QLXD2: Dependant on microphone type |
| Audio Dynamic Range | System Gain @ +10: Greater than 120 dB, A-weighted, typical |
| Total Harmonic Distortion (THD) | -12 dBFS Input, System Gain @ +10: Less than 0.1% |
| Polarity | System Audio: Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of XLR output) and the tip of the 1/4″ (6.35 mm) output |
| Operating Temperature Range | -18 to 50°C Note: Battery characteristics may limit this range |
| Storage Temperature Range | -29 to 74°C Note: Battery characteristics may limit this range. |
| Mic Capsule | |
| Type | Beta 58A |
| Frequency Response | 20 Hz to 20 kHz |
| Polar Pattern | Cardioid |
| Receiver | |
| Housing | Steel |
| Power Requirement | 12 VDC @ 0.4 A, supplied by external power supply (tip positive) |
| RF Input | Spurious Rejection: Greater than 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: 1/4″ (6.35 mm), Yes XLR: Yes |
| Networking | Network Interface: Single Port Ethernet 10/100 Mbps Network Addressing Capability: DHCP or Manual IP address Maximum Ethernet Cable Length: 100 m |
| Dimensions (H x W x D) | 41 x 197 x 151 mm |
| Weight | 777 g |
| Handheld Transmitter | |
| Housing | Machined aluminium |
| Mic Offset Range | 0 to 21 dB (in 3 dB steps) |
| Battery Type | Shure SB900 rechargeable Li-Ion or AA batteries 1.5 V |
| Battery Runtime | At 10 mW: Shure SB900: up to 10 hours Alkaline: up to 9 hours |
| Audio Input | Configuration: Unbalanced |
| RF Output | Antenna Type: Integrated Single Band Helical Occupied Bandwidth: Less than 200 kHz Modulation Type: Shure proprietary digital Power: 1 mW or 10 mW Note: See Frequency Range and Ouput Power table, varies by region |
| Dimensions (L x Diam) | 256 x 51 mm |
| Weight | 347 g |