Shure Brothers SLX4-L4
Overview
Shure SLX4-L4
UHF Receiver with P.S. Rack Mount & Antennas
The Shure SLX4-L4 is a UHF wireless microphones receiver designed for use with the Shure SLX wireless microphone series. It covers the L4 operating frequency band of 638 to 662 MHz.
The diversity design allows dual receiver circuits and antennas to compete for the strongest possible reception. The SLX4-L4 features XLR microphone level and 1/4" phone line level outputs. A comprehensive LCD display provides Frequency, Group, and Channel information, as well as locked/unlocked status, and battery strength.
This UHF receiver brings unprecedented ease-of-use with Auto Frequency Selection and Auto Transmitter Setup. Including rack hardware and detachable antennas, it's ready for installation right out of the box.
Important notice: In the US, the FCC requires that the frequency of this device be set between 652 to 662 MHz. 638 to 652 MHz cannot be used. Foreign customers must check that the frequency band 638 to 662 MHz is unrestricted before purchasing.
Features
- Auto Frequency Selection: Locates a clear channel instantly
- Auto Transmitter Setup: Infrared link automatically synchronizes the transmitter and receiver
- Shure’s patented Audio Reference Companding: Delivers crystal-clear audio transmission, far superior to conventional wireless technology
- Selection of over 960 operating frequencies across 24 MHz of bandwidth: avoids RF interference
- Two detachable 1/4 wave antennas
- 1/4" and XLR audio outputs
- Backlit LCD display: provides Frequency, Group, and Channel information, as well as locked/unlocked status, and battery strength.
- Diversity technology: improves reception, minimize signal dropouts, and achieve the best possible signal-to-noise ratio.
- Audio level meter and infrared port for system synchronization
- Rack-mount hardware included
- Frequency and power lockout
- Volume control on rear of unit
- Rugged metal construction
- Four protective bumpers for use when not rack-mounted
Specifications
| Type of Receiver | UHF Diversity Half-Rack Mountable |
| RF Carrier Frequency Range | L4: 638 to 662 MHz |
| Number of Channels | 960 operating frequencies across a 24 MHz bandwidth |
| Dimensions (HxWxD) | 1.65" x 7.76" x 5.28" (42 x 197 x 134 mm) |
| Weight | 1 lb 13 oz (816 g) |
| Housing | Galvanized steel |
| Display | Backlit LCD |
| Audio Output Level (ref. ±38 kHz deviation with 1 kHz tone) | XLR connector (into 600 Ω load): -13 dBV 1/4 ¼ inch connector (into 3000 Ω load): -2 dBV |
| Output Impedance | XLR connector: 200 Ω ¼ inch connector: 1 kΩ |
| XLR output | Impedance balanced Pin 1: Ground Pin 2: Audio Pin 3: No signal |
| Sensitivity | -105 dBm for 12 dB SINAD, typical |
| Image Rejection | >70 dB, typical |
| Power Requirements | 12–18 Vdc at 150 mA, supplied by external power supply |
| Operating Range Under Typical Conditions | 300 ft.(100 m) Note: actual range depends on RF signal absorption, reflection, and interference |
| Audio Frequency Response (±2 dB) | Minimum: 45 Hz Maximum: 15 kHz (Overall system frequency depends on microphone element.) |
| Total Harmonic Distortion (ref. ±38 kHz deviation, 1 kHz tone) | 0.5%, typical |
| Dynamic Range | >100 dB A-weighted |
| Operating Temperature Range | 0°F -(18°C) to 122°F (50°C) Note: battery characteristics may limit this range |