SLX4 Wireless System

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SLX4 Wireless Receiver

Product Code:

The SLX4 receiver brings unprecedented ease of use to wireless with Automatic Frequency Selection and Automatic Transmitter Setup. With included rack hardware and detachable antennas, it is ready for immediate installation right out of the box. Model SLX4L available with logic output for use with software echo cancellation and remote battery life monitoring. Logic-enabled transmitters include MX690 and MX890.

SLX4: Wireless Receiver
SLX4L: Wireless Receiver with Logic Output

SLX Wireless Systems feature the patented Audio Reference Companding for crystal-clear sound beyond the limits of conventional wireless technology.
  • Automatic Frequency Selection
  • Automatic Transmitter Setup
  • 960 Selectable frequencies across 24 MHz bandwidth
  • Detachable 1/4 wave antennas
  • Microprocessor-controlled diversity
  • RF presence LED
  • 5-segment audio meter
  • Multi-function, backlit LCD
  • Low battery indicator
  • Frequency and power lockout
  • Rugged metal chassis
  • Volume control on rear of unit
  • 1/2 rack design
  • Furnished rack hardware
  • Non-slip bumpers for use out of rack
  • XLR and 1/4" outputs
  • Optional logic functionality for software echo cancellation and remote battery life monitoring (SLX4L only)

  • Dimensions  : 42 mm H x 197 mm W x 134 mm D (1.65 x 7.76 x 5.28 in.)
  • Weight : 816 g (1 lb. 13 oz.)
  • Housing  : Galvanized steel
  • Audio Output Level (ref. +/– 38 kHz deviation with 1 kHz tone)
    XLR connector (into 600 Ω load): –13 dBV
    1/4 inch connector (into 3000 Ω load): –2 dBV
  • Output Impedance
    XLR connector: 200 Ω
    1/4 inch connector: 1kΩ
  • XLR output
    Impedance balanced
    Pin 1: Ground
    Pin 2: (+)
    Pin 3: (-)
  • 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 : 100m (300 ft.)
    Note: Actual range depends on RF signal absorption, reflection, and interference
  • Audio Frequency Response (+/– 2 dB)
    Minimum: 45 Hz
    Maximum: 15 kHz
    Note: 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 : –18°C (0°F) to +50°C (+122°F)
    Note: battery characteristics may limit this range
  • Transmitter Audio Polarity
    Positive pressure on microphone diaphragm (or positive voltage applied
    to tip of WA302 phone plug) produces positive voltage on pin 2 (with
    respect to pin 3 of low impedance output) and the tip of the high
    impedance 1/4-inch output.
  • Logic Connections (SLX4L only)
    Pin 1: Logic output, Transmitter Mute Status. Mute=low (0 V). Sinks up to 100 mA.
    Absolute maximum -0.7 to 5.5V DC
    Pin 2: Logic ground
    Pin 3: Logic output, Battery Status. Good=low (0 V). Sinks up to 100 mA.
    Absolute maximum -0.7 to 5.5V DC

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