Shure SLXD4+ (K55) Wireless Receiver

• K55 Frequency Band (606-694 MHz)
• Transparent 24-bit digital audio quality with >118 dB dynamic range
• Rock solid RF with 138 MHz wide-tuning range for greater geographical coverage:
  • Up to 11 simultaneous systems in 6 MHz TV bands
  • Up to 14 simultaneous systems in 8 MHz TV bands
• Automatic Setup – once linked, SLX-D+ receivers and transmitters stay connected, despite any RF interference
• With ShowLink® Ease, transmitter parameters can be adjusted remotely over the air from the linked receiver, including: 
  • Changing the transmitter frequency once open frequency is identified
  • Adjust power output level
  • Lock and unlock transmitter controls
  • Transmitter firmware updates
• Monitor RF status and control receiver and transmitter parameters with Wireless
• Workbench desktop software, or remotely with the WWB Mobile app over Wi-Fi or Bluetooth
• Patented Shure Digital Feedback Reducer software is embedded in every SLX-D+ receiver, to automatically reduce unwanted audio feedback, should it ever occur.
• Each SLX-D+ component and system ships with AES-256 Encryption installed, for complete and secure peace of mind
• Single channel half-rack design with rugged metal construction

System Specifications

• RF
  • RF Carrier Frequency Range:  606 to 694 MHz (K55)
  • Working Range:  100 m (328 ft). Note: Actual range depends on RF signal absorption,
  • reflection and interference.
  • RF Tuning Step Size
    • JB Band: 125 kHz
    • All Other Bands: 25 kHz Varies by region.
  • Image Rejection:  >85 dB typical
  • RF Sensitivity:  −97 dBm at 10-5 BER
• Audio
  • Latency:  2.8 ms
  • High-Pass/Low Cut Filter:  160 Hz, –12 dB/octave Note: factory default is for the HPF to be off
  • Audio Frequency Response:  20 Hz–20 kHz (+1, −2 dB)
  • Audio Dynamic Range A-weighted, 20 Hz–20 kHz, typical:  118 dB @1% THD
  • Total Harmonic Distortion:  <0.02%
  • System Audio Polarity:
  • XLR: Positive pressure on microphone diaphragm produces positive voltage on pin 2 with respect to pin 3 of XLR output.
  • TRS: Postive pressure on microphone diaphragm produces positive voltage on the tip of the 6.35 mm (1/4-inch) with respect to the ring of the 6.35 mm output.
  • Mic Offset Range:  0 to 21 dB (in 3 dB steps)
• Temperate Range Note: Battery characteristics may limit this range.
  • Operating Temperature Range:  0 °F to 122 °F (−18 °C to 50 °C)
  • Storage Temperature Range:  −20 °F to 165 °F (−29 °C to 74 °C)

SLXD4+ Specifications

• Dimensions (H × W × D):  1.65 × 7.76 × 5.98 in (42 × 197 × 152 mm)
• Weight:  2 lbs (900 g) without antennas
• Housing:  Galvanised Steel
• Power Requirements:  15 VDC @ 360 mA Supplied by external power supply (tip positive)
• RF Input
  • Spurious Rejection:  >75 dB Typical
  • Connector Type:  BNC
  • Impedance:  50 Ω
• Audio Output
  • Gain Adjustment Range:  –18 to +42 dB in 1 dB steps
  • Configuration:
    • 1/4" (6.35 mm):  Balanced (Tip=audio +, Ring=audio –, Sleeve=ground)
    • XLR:  Balanced (1=ground, 2=audio +, 3=audio –)
  • Impedance:
    • 1/4" (6.35 mm):  1.1 kΩ (550 Ω Unbalanced)
    • XLR (line):  500 Ω (250 Ω Unbalanced)
    • XLR (mic):  150 Ω
  • Full Scale Output
    • 1/4" (6.35 mm):  +18 dBV differentially (+12 dBV single)
    • XLR (LINE setting):  +18 dBV
    • XLR (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 Cable Length:  100 m (328 ft)