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Shure BLX188/CVL Wireless Dual Presenter System with two CVL Lavalier Microphones

Product SKU: BLX188/CVL-H10


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Product Details

↓ Details provided by Shure
(Specifications and appearance of this product are subject to change without notice)

The entry to Shure quality lavalier microphones in a dual system for spoken word applications. Features analogue wireless transmission.

Environments: Club, Live Performance, Place of worship, Rehearsal Space

Industries: Education, House of Worship

Shure BLX® Wireless Systems combine professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. Precision-built and available in a variety of configurations, it’s the most accessible way to own the stage.

Frequency Range and Transmitter Output Level

Band Range Output Power
H9 512 to 542 MHz 10 mW
h20 542 to 572 MHz 10 mW
h21 572 to 596 MHz 10 mW
J11 596 to 616 MHz 10 mW


  • 1 - BLX88 dual-channel receiver
  • 2 - BLX1 bodypack transmitters
  • 2 - CVL lavalier microphones
  • 1 - PS24 Power Supply
  • 2 - lavalier clips
  • 2 - lavalier windscreens
  • user guide

    BLX88 Specs

    Output Impedance
    XLR connector 200 Ω
    6.35 mm (1/4") connector 50 Ω
    Audio Output Level

    Ref. ±33 kHz deviation with 1 kHz tone

    XLR connector –27 dBV (into 100 kΩ load)
    6.35 mm (1/4") connector –13 dBV (into 100 kΩ load)
    RF Sensitivity

    -105 dBm for 12 dB SINAD, typical

    Image Rejection

    >50 dB, typical


    1.50 in. X 12.13 in. X 3.98in. (38 mm X 308 mm X 101 mm) H x W x D


    15.1 oz. (429 g)


    Molded ABS

    Power Requirements

    12–15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)

    BLX1 Specs

    Audio Input Level
    max -16 dBV maximum
    min (0 dB) +10 dBV maximum
    Gain Adjustment Range

    26 dB

    Input Impedance

    1 MΩ

    RF Transmitter Output

    10 mW, typical

    varies by region


    4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D


    2.6 oz. (75 g), without batteries


    Molded ABS

    Power Requirements

    2 LR6 AA batteries, 1.5 V, alkaline

    Battery Life

    up to 14 hours (alkaline)

    CVL Specs


    Electret Condenser

    Frequency Response

    60 Hz to 12,000 Hz

    Polar Pattern

    Unidirectional (Cardioid)

    Output Impedance

    @ 1 kHz

    600 Ω

    Audio Output Level

    -43.5 dBV/Pa

    Signal-To-Noise Ratio [1]

    @ 1 kHz

    72 dB

    Maximum SPL [1]

    1000 Ω load, @ 3%THD

    139.0 dB

    Dynamic Range [1]

    @ 1 kHz, 1000 Ω load

    117.0 dB

    Equivalent Output Noise [1]

    typical, A-Weighted

    22 dB

    Power Requirements

    +5 V DC (nominal), 10 V maximum (DC bias)


    Positive pressure on diaphragm produces positive voltage on pin 3 with respect to pin 1


    1.3 m (50 in.)



    Net Weight

    25 g (0.88 oz.)

    [1] Measurements taken using RK100PK preamp set @ 0 dB using 8k bias resistor.

    *All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.

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