The QLXD24/B87A 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 QLX-D 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 clean audio and provides professional features for demanding live sound events and installations.
The QLXD24/B87A system includes a QLXD4 receiver, QLXD2 Transmitter with Beta 87A 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.
Features:
Frequency compatible -M19 (694-703 MHz) is available in 24 preset compatible -Q12 (748-758 MHz) is available in 27 preset compatible
เครื่องส่งสัญญาน (ไมโครโฟน)QLXD2/B87A -20 Hz to 20 kHz frequency range with flat response (actual response is microphone dependent) -Interchangeable Shure microphone capsules, including the legendary SM58® -AES 256-bit encryption for secure transmission -Over 120 dB of dynamic range – no transmitter gain adjustment needed -1, 10 mW selectable RF output power -Up to 9 hours continuous use with 2 x AA alkaline batteries
เครื่องรับสัญญาน QLXD4 -Automatic Channel Scan quickly finds clear frequencies; Networked Channel Scan then shares open frequencies between multiple receivers over Ethernet, with one touch syncing -Digital Predictive Switching Diversity ensures a stable RF connection -Secure AES 256 bit encryption of all wireless transmissions Shure Wireless Workbench® software allows remote control from PC or Mac
Specifications
SHURE QLXD24A/BETA87A Wireless System
System Specifications
RF Carrier Frequency Range
M19 (694-703 MHz), Q12 (748-758 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 10-5 BER
Latency
Less than 2.9 ms
Audio Frequency Response
QLXD1: 20 Hz – 20 kHz (±1 dB)
QLXD2: Dependent 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
0 to 122°F (-18 to 50°C)
Note: Battery characteristics may limit this range
Storage Temperature Range
-20 to 165°F (-29 to 74°C)
Note: Battery characteristics may limit this range.
Receiver
Housing
Steel
Power Requirement
12 VDC @ 0.4 A, supplied by external power supply (tip positive)
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: 328′ (100 m)
Dimensions (H x W x D)
1.63 x 7.75 x 5.94″ (41 x 197 x 151 mm)
Weight
1.71 lb (777 g)
Handheld Transmitter
Housing
Machined aluminum
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
Varies by region
