Shure SLXD14/DL4B Wireless Microphone System with DL4B/O Lavalier

Get seriously reliable wireless audio with the Shure SLXD14/DL4B lavalier system. Includes digital predictive switching diversity for rock-solid performance.

The SLXD14/DL4B Digital Wireless System delivers transparent, 24-bit digital audio and rock-solid RF performance for a wide range of applications, from day-long presentations to nighttime performances.

Operate up to 32 compatible systems per 44 MHz band, with easy setup and optional rechargeability accessories for wireless excellence, wherever required.

Ships with SLXD4 single-channel receiver, SLXD1 bodypack transmitter and DL4 DuraPlex omnidirectional waterproof lavalier microphone, with antenna and rackmount accessories and 2 AA batteries.


- Extended 20 Hz to 20 kHz frequency range (microphone dependent)
- 120 dB dynamic range
- Digital predictive switching diversity
- 44 MHz tuning bandwidth (region dependent)
- 32 available channels per frequency band (region dependent)
- Up to 10 compatible systems per 6MHz TV band; 12 systems per 8 MHz band
- Easy pairing of transmitters and receivers over IR scan and sync
- Up to 8 hours from 2 AA batteries or optional Shure SB903 rechargeable battery

DuraPlex lavaliers have been extensively tested to ensure an IP57 dust-resistant, waterproof rating. Whether shooting reality TV, mounting a professional theatrical tour, or wherever audio takes you, contending with the elements won't slow you down. As comfortable on the beach as it is in a broadcast studio, DuraPlex features a neutral, full sound quality that lives up to the highest audio standards. The advanced 1.6 mm Shure Plex cable, first introduced with the read more award-winning TwinPlex subminiature microphone, lasts longer than competing cables due to a dual redundant ground which doubles as a secondary shield. It also offers virtually zero "memory effect," won't kink, and is fully paintable.


- 5 mm omnidirectional subminiature design for discrete placement and improved gain-before-feedback
- IP57 dust-resistant, waterproof rated
- Neutral, full sound quality for film, broadcast, speech, theater, and performance applications
- Advanced 1.6 mm Shure Plex cable:
- Dual redundant ground in cable serves as secondary shield for unprecedented longevity
- Immune to memory effect and kinks
- Fully paintable with typical theater paints, pens, and polishes
- Presence Cap included for tailored frequency response provides additional vocal clarity and presence (3-4 dB boost near 10 kHz)
- The DL4 included with this system is black, and features a TA4F connector
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- RF Carrier Frequency Range:
- 470 to 514MHz (G58 Band)
- 514 to 558 MHz (H55 Band)
- 558 to 602MHz and 614 to 616MHz (J52 Band)
- Working Range: 100 m (328 ft)
- Note: Actual range depends on RF signal absorption, reflection and interference.
- RF Tuning Step Size: 25 kHz
- Image Rejection:70 dB (typical)
- RF Sensitivity: -97 dBm at 10-5 BER

- Latency: 3.2 ms
- Audio Frequency Response: 20 Hz-20 kHz (+1, -2 dB)
- Audio Dynamic Range (A-weighted, typical): 120 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: Positive pressure on microphone diaphragm produces positive voltage on the tip of the 6.35mm (1/4-inch) with respect to the ring of the 6.35mm output.
- Mic Offset Range: 0 to 21 dB (in 3 dB steps)

(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)

- Microphone Capsule: MEMS
- Polar Pattern: Omnidirectional
- Frequency Response: 20 Hz to 20 kHz
- Sensitivity: -42.5 dBV (7.5 mVRMS ) @ 1 kHz
- Self-Noise: 31 dB SPL-A, A-weighted, Equivalent Acoustical
- Signal-to-Noise Ratio: 63 dB
- Maximum SPL: 132.0 dB SPL, 1 kHz @ 1% THD, typical
- Dynamic Range: 101.0 dB (Typical)
- Microphone Current Draw: 220 uA, maximum
- Bias Voltage (Recommended Operating Voltage): 5 VDC
- Housing: Molded ABS
- Polarity: MTQG: Positive Pressure on diaphragm produces positive voltage on Pin 3 with respect to Pin 1, LEMO: Positive pressure on diaphragm produces positive voltage on Pin 3 with respect to Pin 1
- Cable Diameter: 1.6 mm
- Cable Length: 66.0 in (1.67 m)
- Net Weight: 15.0 g (0.53 oz)
- Capsule Dimensions: 14.5 mm \0xD7 5.2 mm (L \0xD7 D)
Dimensions and Weight in Packaging
Band G58
Shipping Weight: 7 lbs
Shipping Dimensions: 18 x 14 x 4 in
Manufacturer Part Number (MPN): SLXD14/DL4B-G58
Band H55
Shipping Weight: 7 lbs
Shipping Dimensions: 18 x 14 x 5 in
Manufacturer Part Number (MPN): SLXD14/DL4B-H55
Band J52
Shipping Weight: 7 lbs
Shipping Dimensions: 18 x 14 x 5 in
Manufacturer Part Number (MPN): SLXD14/DL4B-J52

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at

NOTE: None of the wireless systems we carry are capable of violating the FCC guidelines stated above. We are presenting this information as a matter of legally required disclosure.

For support or warranty questions, please contact the manufacturer:
Phone: 800-516-2525

Band G58

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