Shure SLXD25+/SM58 (K55) Portable Wireless Vocal System

• K55 Frequency Band (606-694 MHz)
• Powerful, portable digital wireless system for on-camera cold shoe mounting and audio bag use
• 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
• Dual 1/8” outputs including a headphone monitor out and switchable line/mic output
• 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
• Use Multi-Mic Mode to scan and sync over IR multiple clean frequencies, and monitor multiple sources from a single receiver with user-configurable front-panel controls
• 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
• Up to 8 hours (SLXD2+)  / up to 5.5 hours (SLXD5+) of use from either 2 AA batteries (included) or optional Shure SB903 Li-ion rechargeable batteries and charging accessories
• Portable ergonomic design with rugged metal construction

System Specifications

• RF
  • RF Carrier Frequency Range:  606 to 694 MHz
  • 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)

SLXD5+ Specifications

• Dimensions (H × W × D):  4.21 × 2.68 × 1.0 in (107 × 68 × 25.3 mm)
• Weight:  0.4 lb (182 g)
• Housing:  Aluminium
• Power Requirements
• Battery:  Rechargeable Li-Ion or 1.5 V AA batteries
• Power Supply:  SBC-DC-903 Battery Eliminator, or 5 VDC via USB-C
• RF Input
  • Spurious Rejection:  >75 dB Typical
  • Impedance:  50 Ω
  • Phantom Power Protection:  Yes
  • Antenna Type:  1/4 Wave Whip

SLXD2+ Specifications

• Battery Type:  Rechargeable Li-Ion or 1.5 V AA batteries
• Dimensions (Dia. × L):  1.46 × 6.93 in (37.1 × 176 mm)
• Weight:  5.1 oz. (144 g)
• Housing:  Aluminium
• Audio Input
  • Configuration:  Unbalanced
  • Maximum Input Level:  8.2 dBV (2.57 Vrms, 7.27 Vpp) Note: Dependent on Microphone Type
• RF Output
  • Antenna Type Integrated Single-Band Helical
  • Occupied Bandwidth <200 kHz
  • Modulation Type Shure Proprietary Digital
  • Power 1 mW/10 mW