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Shure SLX UHF Handheld Wireless Mic System with Beta 87A

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Product Description

Shure SLX Beta 87 Handheld Wireless Microphone System delivers superior audio quality in an easy-to-use and quickly configurable package. Offering Shure's patented Audio Reference Companding technology for more transmission clarity and dynamic range, along with an innovative setup complete with automatic synchronization, Shure SLX supports up to 20 compatible systems, and setup is nearly effortless.

Shure SLX Beta 87 Handheld Wireless Microphone System Features

  • Shure's patented Audio Reference Companding: Delivers crystal-clear audio transmission, far superior to conventional wireless technology
  • Auto Frequency Selection: Locates a clear channel instantly
  • Auto Transmitter Setup: Infrared link automatically syncs the transmitter and receiver
Shure SLX Wireless Receiver Features
  • Detachable 1/4 wave antennas
  • Backlit LCD
  • Rack-mount hardware included
  • 1/4 inch and XLR audio outputs
  • Frequency and power lockout
  • Volume control on rear of unit
  • Rugged metal construction
Shure SLX Beta 87 Handheld Transmitter Features
  • Timed backlit LCD
  • Frequency and power lockout
  • Two AA batteries (included) provide 8 hours of continuous use
  • 300 foot operating range
The Auto Frequency Selection and Auto Transmitter Setup on the Shure SLX Beta 87 Handheld Wireless Microphone System scans the wireless landscape and identifies a clear channel instantly. Then, guided by an infrared link, at the touch of a button the transmitter automatically syncs with the receiver. With over 960 operating frequencies across 24 MHz of UHF bandwidth, you should be able to quickly and easily set up up to 20 systems (area dependent).

These diversity systems feature metal receivers, rack hardware, detachable antennas, a backlit multifunction LCD display, 1/4-inch and XLR outputs, frequency and power lockouts, an In Line power supply, and a rear-panel volume control. The transmitters feature a timed backlit LCD, frequency and power lockouts, 300 ft. (100m) of operating range, and 8-hour operation on two AA batteries. Includes SLX2/Beta 87A Handheld Transmitter and SLX4 Diversity Receiver.

Audio Reference Companding
Shure's patented Audio Reference Companding is currently featured in Shure SLX and ULX Wireless Systems, and in some PSM 700 Personal Monitor Systems (H3 and L2 bands).

Audio Reference Companding: The Basics

    What does it do?
    Improves wireless sound quality.

    What is it?
    A more efficient companding scheme.

    What is companding?
    Companding is the process of compressing the audio signal prior to transmission and expanding it after reception. All pro audio wireless needs companding to deliver a wide dynamic range (greater than 100dB).

    How does it work?
    Audio Reference Companding is a level-dependent companding scheme. Instead of companding across the entire dynamic range like most wireless systems (causing a whooshing audio artifact known as "breathing"), companding only occurs at high audio levels. These levels are high enough to make the companding artifacts inaudible.

    Why is it better?
    Sounds more like a wired microphone, with less noise and greater dynamic range than other wireless systems. No artifacts, lower noise floor, clearer sound at all audio levels.


Audio Reference Companding: Tangible Results
Specific attributes of Audio Reference Companding that the listener will notice are:

  • No breathing noise
  • Lower noise floor
  • More headroom - won't clip as easily
  • Clearer sound at all audio levels
  • Sounds more like a wired mic, as clearly demonstrated by published impulse response curves.


Product Specifications
Shure SLX UHF Handheld Wireless System Specifications
  • Operating Range: 100m (300 ft) Typical Conditions
  • Audio Frequency Response (+/- 2 dB):
    • Minimum: 45 Hz
    • Maximum: 15 kHz
  • Total Harmonic Distortion: 0.5%, typical (+/- 38 kHz deviation, 1 kHz tone)
  • Signal-to-Noise Ratio: >100 dB A-weighted
  • Operating Temperature Range: -18°C (0°F) to +50°C (+122°F)
  • 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.
SLX2 Handheld Transmitter
  • Audio Input Level: +2 dBV maximum at minimum gain position
  • Dimensions (Length x Dia): 10 x 2 inches (254 x 51 mm)
  • Weight: 10.2 oz (290 grams) without batteries
  • Housing: Molded PC/ABS handle and battery cup
  • Power: 2 AA size alkaline or rechargeable batteries
  • Battery Life: >8 hours (alkaline)
SLX4 Receiver
  • Dimensions (HxWxD): 1.65 x 7.76 x 5.28 inches (42 x 197 x 134 mm)
  • Weight: 1 lb. 13 oz. (816 g)
  • Housing: Galvanized steel
  • Audio Output Level: (ref. +/- 38 kHz deviation with 1 kHz tone):
    • XLR connector (into 600 ohm load): -13 dBV
    • 1/4 inch connector (into 3000 ohm load): -2 dBV
  • Output Impedance:
    • XLR connector: 200 ohms
    • 1/4 inch connector: 1kohm
  • 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: 12-18 Vdc at 150 mA (external power supply)
Buy with Confidence
All wireless microphone systems available through AMS are compliant with current FCC rules for safe operation without a license when they leave our warehouse. If you choose to modify a system after purchase, it may no longer be in compliance and may therefore require a license to operate. To learn more about the FCC’s rules regarding wireless microphones (which are subject to change), please call the FCC at 888-CALL-FCC (TTY: 888-TELL-FCC) or visit http://www.fcc.gov/encyclopedia/wireless-microphones.
Helpful Info about the Manufacturer
Phone:  800-257-4873 Warranty:  2 Year Microphones; 1 Year Wireless Transmitters and Receivers
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